大阪大学大学院工学研究科・応用化学専攻・物質機能化学コース・物性化学領域


  1. F. Caraballo, M. Kumano, A. Saeki, “Spatial Inhomogeneity of Methylammonium Lead-Mixed Halide Perovskite Examined by Space- and Time-Resolved Microwave Conductivity”
    ACS Omega 2 (2017) 8020-8026.
    DOI: 10.1021/acsomega.7b01471
  2. M. Ozaki, Y. Katsuki, J. Liu, T. Handa, R. Nishikubo, S. Yakumaru, Y. Hashikawa, Y. Murata, T. Saito, Y. Shimakawa, Y. Kanemitsu, A. Saeki, A. Wakamiya, “Solvent-Coordinated Tin Halide Complexes as Purified Precursors for Tin-Based Perovskites”
    ACS Omega 2 (2017) 7016-7021
    DOI: 10.1021/acsomega.7b01292
  3. E. Al-Naamani, A. Gopal, M. Ide, I. Osaka, A. Saeki, “Exploring Alkyl Chains in Benzobisthiazole-Naphthobisthiadiazole Polymers: Impact on Solar-Cell Performance, Crystalline Structures, and Optoelectronics“
    ACS Appl. Mater. Interfaces 9 (2017) 37702-37711.
    DOI: 10.1021/acsami.7b10619
  4. K. Kranthiraja S. H. Park, H. Kim, K. Gunasekar, G. Han, B. J. Kim, C. S. Kim, S. Kim, H. Lee, R. Nishikubo, A. Saeki, S.-H. Jin, M. Song, “Accomplishment of Multifunctional π-Conjugated Polymers by Regulating the Degree of Side-Chain Fluorination for Efficient Dopant-Free Ambient-Stable Perovskite Solar Cells and Organic Solar Cells“
    ACS Appl. Mater. Interfaces 9 (2017) 36053-36060.
    DOI: 10.1021/acsami.7b09146
  5. M. Tamada, T. Iino, Y. Wang, M. Ide, A. Saeki, H. Furuta, N. Kobayashi, S. Shimizu, “Facile synthesis of dimeric aza-BODIPY analogues from electron-deficient bislactams and their intriguing optical and electrochemical properties“
    Tetrahed. Lett. 58 (2017) 3151-3154.
    DOI: 10.1016/j.tetlet.2017.06.088
  6. R. Nishikubo, N. Ishida, Y. Katsuki, A. Wakamiya, and A. Saeki, "Minute-Scale Degradation and Shift of Valence Band Maxima of (CH3NH3)SnI3 and HC(NH2)2SnI3 Perovskite upon Air Exposure"
    J. Phys. Chem. C 121 (2017) 19650-19656.
    DOI:10.1021/acs.jpcc.7b06294
  7. Y. Shimata, and A. Saeki, “Hole Relaxation in Polymer:Fullerene Solar Cells Examined by the Simultaneous Measurement of Time-of-Flight and Time-Resolved Microwave Conductivity”
    J. Phys. Chem. C 121 (2017) 18351-18359.
    DOI: 10.1021/acs.jpcc.7b05212
  8. S. Kanno, Y. Imamura, A. Saeki, and M. Hada, “Rotational Energy Barriers and Relaxation Times of the Organic Cation in Cubic Methylammonium Lead/Tin Halide Perovskites from First Principles”
    J. Phys. Chem. C 121 (2017) 14051-14059.
    DOI: 10.1021/acs.jpcc.7b04589
  9. M. Ide, and A. Saeki, “Fluorinated Benzothienoisoindigo Copolymers for Organic Solar Cells: A Comparative Study on Polymer Orientation and Device Performance”
    Chem. Lett.46 (2017) 1133-1136.
    DOI: 10.1246/cl.170307
  10. T. Fujikawa, N. Mitoma, A. Wakamiya, A. Saeki, Y. Segawa, K. Itami, “Synthesis, properties, and crystal structures of π-extended double [6]helicenes: contorted multi-dimensional stacking lattice”
    Org. Biomol. Chem. 15 (2017) 4697-4703.
    DOI: 10.1039/C7OB00987A
  11. F. Lu, T. Takaya, K. Iwata, I. Kawamura, A. Saeki, M. Ishii, K. Nagura, T. Nakanishi, “A Guide to Design Functional Molecular Liquids with Tailorable Properties using Pyrene-Fluorescence as a Probe”
    Sci. Rep. 7 (2017) 3416/1-12.
    DOI: 10.1038/s41598-017-03584-1
  12. R. Nishikubo, N. Tohnai, I. Hisaki, A. Saeki, “Thermoresponsive Emission Switching via Lower Critical Solution Temperature Behavior of Organic–Inorganic Perovskite Nanoparticles”
    Adv. Mater. 29 (2017) 1700047/1-8.
    DOI: 10.1002/adma.201700047
  13. K. Kranthiraja, K. Gunasekar, H. Kim, A.-N. Cho, N.-G. Park, S. Kim, B. J. Kim, R. Nishikubo, A. Saeki, M. Song, S.-H. Jin, “High-Performance Long-Term-Stable Dopant-Free Perovskite Solar Cells and Additive-Free Organic Solar Cells by Employing Newly Designed Multirole π-Conjugated Polymers”
    Adv. Mater.29 (2017) 1700183/1-8.
    DOI: 10.1002/adma.201700183
  14. S. Ghosh, D. S. Philips, A. Saeki, A. Ajayaghosh, “Nanosheets of an Organic Molecular Assembly from Aqueous Medium Exhibit High Solid-State Emission and Anisotropic Charge-Carrier Mobility”
    Adv. Mater.29 (2017) 1605408/1-6.
    DOI: 10.1002/adma.201605408
  15. B. Balan, J. S. Panicker, S. Nagasawa, A. Saeki, and V. C. Nair, “Synthesis and Optoelectronic Properties of Thiophene-Based Semiconducting Oligomers”
    ChemistrySelect 1 (2016) 6872-6879.
    DOI: 10.1002/slct.201601547
  16. M. Kumano, M. Ide, N. Seiki, Y. Shoji, T. Fukushima, and A. Saeki, “A ternary blend of a polymer, fullerene, and insulating self-assembling triptycene molecules for organic photovolatics”
    J. Mater. Chem. A 4 (2016) 18490-18498.
    DOI: 10.1039/C6TA07705F
  17. V. S. Nair, R. D. Mukhopadhyay, A. Saeki, S. Seki, and A. Ajayaghosh, “A π-gel scaffold for assembling fullerene to photoconducting supramolecular rods”
    Sci. Adv. 2 (2016) e1600142/1-9.
    DOI: 10.1126/sciadv.1600142
  18. T. Ghosh, A. Gopal, S. Nagasawa, N. Mohan, A. Saeki, and V. C. Nair, “Following the TRMC Trail: Optimization of Photovoltaic Efficiency and Structure–Property Correlation of Thiophene Oligomers”
    ACS Appl. Mater. Interfaces 8 (2016) 25396-25404.
    DOI: 10.1021/acsami.6b07508
  19. F. K.-C. Leung, F. Ishiwari, T. Kajitani, Y. Shoji, T. Hikima, M. Takata, A. Saeki, S. Seki, Y. M. A. Yamada, and T. Fukushima, “Supramolecular Scaffold for Tailoring the Two-Dimensional Assembly of Functional Molecular Units into Organic Thin Films”
    J. Am. Chem. Soc. 138 (2016) 11727-11733.
    DOI: 10.1021/jacs.6b05513
  20. N. Ishida, A. Wakamiya, and A. Saeki, “Quantifying Hole Transfer Yield from Perovskite to Polymer Layer: Statistical Correlation of Solar Cell Outputs with Kinetic and Energetic Properties”
    ACS Photonics 3 (2016) 1678-1688.
    DOI: 10.1021/acsphotonics.6b00331
  21. Y. Shimata, M. Ide, M. Tashiro, M. Katouda, Y. Imamura, and A. Saeki, “Charge Dynamics at Heterojunction between Face-on/Edge-on PCPDTBT and PCBM Bilayer: Interplay of Donor/Acceptor Distance and Local Charge Carrier Mobility”
    J. Phys. Chem. C120 (2016) 17887-17897.
    DOI: 10.1021/acs.jpcc.6b04827
  22. M. Ide, Y. Koizumi, and A. Saeki, “Control of Phase Separation of Benzothienoisoindigo-Benzodithiophene Copolymer for Organic Photovoltaics”
    J. Photopolym. Sci. Tech. 29 (2016) 565-569.
    DOI: 10.2494/photopolymer.29.565
  23. T. Wasin, K. Enomoto, T. Sakurai, V. S. Padalkar, H. L. Cheng, M. T. Tang, A. Horio, D. Sakamaki, M. Omichi, A. Saeki, K. Kikuchi, Y. Hori, A. Chiba, Y. Saito, T. Kamiya, M. Sugimoto, and S. Seki “Fabrication of “Clickable” Polyfluorene Nanowires with High Aspect Ratio as Biological Sensing Platforms”
    ACS Sens. 1 (2016) 766-774.
    DOI: 10.1021/acssensors.6b00070
  24. S. Kushida, D. Braam, T. D. Dao, H. Saito, K. Shibasaki, S. Ishii, T. Nagao, A. Saeki, J. Kuwabara, T. Kanbara, M. Kijima, A. Lorke, and Y. Yamamoto, “Conjugated Polymer Blend Microspheres for Efficient, Long-Range Light Energy Transfer”
    ACS Nano 10 (2016) 5543-5549.
    DOI: 10.1021/acsnano.6b02100
  25. S. Kushida, S. Okabe, T. D. Dao, S. Ishii, T. Nagao, A. Saeki, M. Kijima, and Y. Yamamoto,“Self-assembled polycarbazole microspheres as single-component, white-colour resonant photoemitters”
    RSC Adv. 6 (2016) 52854-52857.
    DOI: 10.1039/C6RA10662E
  26. I. Hisaki, K. Osaka, N. Ikenaka, A. Saeki, N. Tohnai, S. Seki, and M. Miyata, “Arrangement Modulation of π-Stacked Columnar Assemblies of Octadehydrodibenzo[12]annulene: Substituent Effects of Peripheral Thienyl and Phenyl Rings”
    Cryst. Growth Des. 16 (2016) 714-721
    DOI: 10.1021/acs.cgd.5b01273
  27. E. Al-Naamani, M. Ide, A. Gopal, and A. Saeki, “Insight into the energy loss in organic solar cells based on benzotrithiophene copolymers: A dark current analysis at low temperature”
    Jpn. J. Appl. Phys. 55 (2016) 022303/1-4
    DOI: 10.7567/JJAP.55.022303
  28. H. Nishimura, N. Ishida, A. Shimazaki, A. Wakamiya, A. Saeki, L. T. Scott, and Y. Murata, “Hole-Transporting Materials with a Two-Dimensionally Expanded π-System around an Azulene Core for Efficient Perovskite Solar Cells”
    J. Am. Chem. Soc. 137 (2015) 15656-15659.
    DOI: 10.1021/jacs.5b11008
  29. M. Ide, A. Saeki, Y. Koizumi, T. Koganezawa, and S. Seki, “Molecular engineering of benzothienoisoindigo copolymers allowing highly preferential face-on orientations”
    J. Mater. Chem. A 3 (2015) 21578-21585.
    DOI: 10.1039/c5ta05885f
  30. E. Al-Naamani, M. Ide, A. Gopal, A. Saeki, I. Osaka, and S. Seki, “Study of Photoelectric Conversion in Benzotrithiophene-Based Conjugated Semiconducting Polymers”
    J. Photopolym. Sci. Tech. 28 (2015) 605-610.
    DOI: 10.2494/photopolymer.28.605
  31. T. Fukumatsu, A. Saeki, and S. Seki “Modulation and evaluation of the charge carrier mobility in a polymer alloy of polythiophene and an insulating matrix with an electron accepting molecule”
    Polym. Chem. 6 (2015) 5860-5868.
    DOI: 10.1039/C5PY00796H
  32. Y. Shen, A. Saeki, S. Seki, J.-O Lee, J. Aimi, and T. Nakanishi “Exfoliation of Graphene and Assembly Formation with Alkylated-C60: A Nanocarbon Hybrid towards Photo-Energy Conversion Electrode Devices”
    Adv. Opt. Mater. 3 (2015) 925-930.
    DOI: 10.1002/adom.201400619
  33. S. Yoshikawa, A. Saeki, M. Saito, I. Osaka, and S. Seki, “On the role of local charge carrier mobility in the charge separation mechanism of organic photovoltaics”
    Phys. Chem. Chem. Phys. 17 (2015) 17778-17784.
    DOI: 10.1039/C5CP01604E
  34. Y. Noguchi, A. Saeki, T. Fujiwara, S. Yamanaka, M. Kumano, T. Sakurai, N. Matsuyama, M. Nakano, N. Hirao, Y. Ohishi, and S. Seki, “Pressure Modulation of Backbone Conformation and Intermolecular Distance of Conjugated Polymers Toward Understanding the Dynamism of π-Figuration of their Conjugated System”
    J. Phys. Chem. B 119 (2015) 7219-7230.
    DOI: 10.1021/jp5100389
  35. T. Mikie, A. Saeki, N. Ikuma, K. Kokubo, and S. Seki, “Hetero Bis-Addition of Spiro-Acetalized or Cyclohexanone Ring to 58π Fullerene Impacts Solubility and Mobility Balance in Polymer Solar Cells”
    ACS Appl. Mater. Interfaces 7 (2015) 12894-12902.
    DOI: 10.1021/acsami.5b02456
  36. T. Mikie, A. Saeki, Y. Yamazaki, N. Ikuma, K. Kokubo, and S. Seki, “Stereochemistry of Spiro-Acetalized [60]Fullerenes: How the Exo and Endo Stereoisomers Influence Organic Solar Cell Performance”
    ACS Appl. Mater. Interfaces 7 (2015) 8915-8922.
    DOI: 10.1021/acsami.5b01818
  37. Y. Ie, S. Jinnai, M. Karakawa, A. Saeki, S. Seki, and Y. Aso, “Synthesis, properties, and semiconducting characteristics of electron-transporting three-dimensional π-conjugated compounds containing dicyanomethylene-substituted difluorocyclopenta[b]thiophene”
    J. Fluorine Chem. 174 (2015) 75-80.
    DOI: 10.1016/j.jfluchem.2014.07.023
  38. T. Ghosh, A. Gopal, A. Saeki, S. Seki, and V. C. Nair “p/n-Polarity of thiophene oligomers in photovoltaic cells: role of molecular vs. supramolecular properties”
    Phys. Chem. Chem. Phys. 17 (2015) 10630-10639.
    DOI: 10.1039/c5cp01044f
  39. J. Aimi, M. Komura, T. Iyoda, A. Saeki, S. Seki, M. Takeuchi, and T. Nakanishi, “Synthesis and self-assembly of phthalocyanine-tethered block copolymers”
    J. Mater. Chem. C 3 (2015) 2484-2490.
    DOI: 10.1039/C4TC02778G
  40. T. Mikie, A. Saeki, N. Ikuma, K. Kokubo, and S. Seki, “Spiro-1,3-dioxolanofullerenes with Low-lying LUMO Level for Organic Solar Cells”
    Chem. Lett.44 (2015) 282-284.
    DOI: 10.1246/cl.141008
  41. Y. Inada, T. Amaya, A. Saeki, S. Seki, T. Hirao, “Laser-Induced Carbonization of Sumanene Derivatives: Exposure-Time Dependence of Time-Resolved Microwave Conductivity”
    Bull. Chem. Soc. Jpn. 88 (2015) 330-332.
    DOI: 10.1246/bcsj.20140318
  42. H. L. Cheng, M. T. Tang, W. Tuchinda, K. Enomoto, A. Chiba, Y. Saito, T. Kamiya, M. Sugimoto, A. Saeki, T. Sakurai, M. Omichi, D. Sakamaki, and S. Seki, “Reversible Control of Radius and Morphology of Fluorene-Azobenzene Copolymer Nanowires by Light Exposure”
    Adv. Mater. Interfaces 2 (2015) 1400450/1-9.
    DOI: 10.1002/admi.201400450
  43. S. Shimizu, T. Iino, A. Saeki, S. Seki, and N. Kobayashi, “Rational Molecular Design towards Vis/NIR Absorption and Fluorescence by using Pyrrolopyrrole aza-BODIPY and its Highly Conjugated Structures for Organic Photovoltaics”
    Chem. Eur. J. 21 (2015) 2893-2904.
    DOI: 10.1002/chem.201405761
  44. S. Prasanthkumar, S. Ghosh, V. C. Nair, A. Saeki, S. Seki, and A. Ajayaghosh, “Organic Donor-Acceptor Assemblies form Coaxial p-n Heterojunctions with High Photoconductivity”
    Angew. Chem. Int. Ed. 54 (2015) 946-950.
    DOI: 10.1002/anie.201408831
  45. T. Mikie, A. Saeki, H. Masuda, N. Ikuma, K. Kokubo, and S. Seki, “New Efficient (Thio)acetalized Fullerene Monoadducts for Organic Solar Cells: Characterization Based on Solubility, Mobility Balance, and Dark Current”
    J. Mater. Chem. A 3 (2015) 1152-1157.
    DOI: 10.1039/c4ta05965d
  46. S. Yagai, M. Suzuki, X. Lin, M. Gushiken, T. Noguchi, T. Karatsu, A. Kitamura, A. Saeki, S. Seki, Y. Kikkawa, Y. Tani, and K.-i. Nakayama, “Supramolecular Engineering of Oligothiophene Nanorods without Insulators: Hierarchical Association of Rosettes and Photovoltaic Properties”
    Chem. –Eur. J. 20 (2014) 16128-16137.
    DOI: 10.1002/chem.201404428
  47. A. Gopal, A. Saeki, M. Ide, and S. Seki, “Fluorination of Benzothiadiazole–Benzobisthiazole Copolymer Leads to Additive-Free Processing with Meliorated Solar Cell Performance”
    ACS Sustainable Chem. Eng.2 (2014) 2613-2622.
    DOI: 10.1021/sc5005617
  48. H. Li, T. Earmme, G. Ren, A. Saeki, S. Yoshikawa, N. M. Murari, S. Subramaniyan, M. J. Crane, S. Seki, and S. A. Jenekhe “Beyond Fullerenes: Design of Nonfullerene Acceptors for Efficient Organic Photovoltaics”
    J. Am. Chem. Soc.136 (2014) 14589-14597.
    DOI: 10.1021/ja508472j
  49. H. Oga, A. Saeki, Y. Ogomi, S. Hayase, and S. Seki, “Improved Understanding of the Electronic and Energetic Landscapes of Perovskite Solar Cells: High Local Charge Carrier Mobility, Reduced Recombination, and Extremely Shallow Traps”
    J. Am. Chem. Soc.136 (2014) 13818-13825.
    DOI: 10.1021/ja506936f
  50. A. Saeki, Y. Yasutani, H. Oga, and S. Seki, “Frequency-Modulated Gigahertz Complex Conductivity of TiO2 Nanoparticles: Interplay of Free and Shallowly Trapped Electrons”
    J. Phys. Chem. C 118 (2014) 22561-22572.
    DOI: 10.1021/jp505214d
  51. T. Amaya, Y. Inada, Y. Shimizu, A. Saeki, R. Tsuji, S. Seki, and T. Hirao, “Sumanenemonoone Imines Bridged by Redox-Active π-Conjugated Unit: Synthesis, Stepwise Coordination to Palladium(II), and Laser-Induced Formation of Nitrogen-Doped Graphitic Carbon”
    Chem. -Asian J. 9 (2014) 2568-2575.
    DOI: 10.1002/asia.201402242 [ch0]
  52. K. Kobayashi, Y. Seike, A. Saeki, T. Kozawa, F. Takeuchi, and M. Tsubaki “A Pulse Radiolysis Study of the Dynamics of Ascorbic Acid Free Radicals within a Liposomal Environment”
    ChemPhysChem15 (2014) 2994-2997.
    DOI: 10.1002/cphc.201402297
  53. C. Kitamura, G. Ohe, T. Kawase, A. Saeki, and S. Seki “Alkyl Substituent Effects on Molecular Packing and Optoelectronic Properties of 2,3-Dialkyltetracenes”
    Bull. Chem. Soc. Jpn. 87 (2014) 915-921.
    DOI: 10.1246/bcsj.20140006
  54. T. Mikie, A. Saeki, N. Ikuma, K. Kokubo, and S. Seki “Exploring Photovoltaic Feasibility of Pentaaryl [60]Fullerene in Bulk Heterojunction Architecture”
    J. Photopolym. Sci. Tech. 27 (2014) 553-556.
    DOI: 10.2494/photopolymer.27.553
  55. M. J. Hollamby, M. Karny, P. H. H. Bomans, N. A. J. M. Sommerdjik, A. Saeki, S. Seki, H. Minamikawa, I. Grillo, B. R. Pauw, P. Brown, J. Eastoe, H. Möhwald, and T. Nakanishi, “Directed Assembly of Optoelectronically Active Alkyl–π-Conjugated Molecules by Adding n-alkanes or π-Conjugated Species”
    Nature Chem. 6 (2014) 690-696.
    DOI: 10.1038/NCHEM.1977
  56. W. Choi, T. Miyakai, T. Sakurai, A. Saeki, M. Yokoyama, and S. Seki, “Non-contact, Non-destructive, Quantitative Probing of Interfacial Trap Sites for Charge Carrier Transport at Semiconductor-Insulator Boundary”
    Appl. Phys. Lett. 105 (2014) 033302/1-4.
    DOI: 10.1063/1.4891052
  57. W. Nakanishi, N. Matsuyama, D. Hara, A. Saeki, S. Hitosugi, S. Seki, and H. Isobe, “Disilanyl Double-Pillared Bisternaphthyl (SiDPBT): Synthesis and Interfused Packing Structures with Herringbone and π-Stack Motifs”
    Chem. Asian J. 9 (2014) 1782-1785.
    DOI: 10.1002/asia.201402290
  58. A. Wakamiya, H. Nishimura, T. Fukushima, F. Suzuki, A. Saeki, S. Seki, I. Osaka, T. Sasamori, M. Murata, Y. Murata, and H. Kaji, “On-Top π-Stacking of Quasiplanar Molecules in Hole-Transporting Materials: Inducing Anisotropic Carrier Mobility in Amorphous Films”
    Angew. Chem. Int. Ed. 53 (2014) 5800-5804.
    DOI: 10.1002/anie.201400068
  59. L. Wu, M. Ohtani, M. Takata, A. Saeki, S. Seki, Y. Ishida, and T. Aida, “Magnetically Induced Anisotropic Orientation of Graphene Oxide Locked by in Situ Hydrogelation”
    ACS Nano 8 (2014) 4640-4649.
    DOI: 10.1021/nn5003908
  60. Z. Wang, T. Miyadera, A. Saeki, Y. Zhou, S. Seki, Y. Shibata, T. Yamanari, K. Matsubara, and Y. Yoshida “Structural influences on charge carrier dynamics for small-molecule organic photovoltaics”
    J. Appl. Phys.116 (2014) 013105/1-7.
    DOI: 10.1063/1.4887076
  61. L. Tong, S. Kushida, J. Kuwabara, T. Kanbara, N. Ishii, A. Saeki, S. Seki, S. Furumi, and Y. Yamamoto, “Tetramethylbithiophene in π-conjugated alternating copolymers as an effective structural component for the formation of spherical assemblies”
    Polym. Chem. 5 (2014) 3583-3587.
    DOI: 10.1039/c4py00023d
  62. M. Omichi, A. Asano, S. Tsukuda, K. Takano, M. Sugimoto, A. Saeki, D. Sakamaki, A. Onoda, T. Hayashi, and S. Seki, “Fabrication of enzyme-degradable and size-controlled protein nanowires using single particle nano-fabrication technique”
    Nature Commun. 5 (2014) 3718/1-8.
    DOI: 10.1038/ncomms4718
  63. A. Saeki, M. Tsuji, S. Yoshikawa, A. Gopal, and S. Seki, “Boosting photovoltaic performance of a benzobisthiazole based copolymer: a device approach using a zinc oxide electron transport layer”
    J. Mater. Chem. A 2 (2014) 6075-6080.
    DOI: 10.1039/c3ta14109h
  64. Y. Ie, M. Karakawa, S. Jinnai, H. Yoshida, A. Saeki, S. Seki, S. Yamamoto, H. Ohkita, and Y. Aso, “Electron-donor function of methanofullerenes in donor–acceptor bulk heterojunction systems”
    Chem. Commun. 50 (2014) 4123-4125.
    DOI: 10.1039/c4cc00940a
  65. I. Hisaki, N. Manabe, K. Osaka, A. Saeki, S. Seki, N. Tohnai, and M. Miyata, “Effects of ortho-Phenyl Substitution on Molecular Arrangements of Octadehydrodibenzo[12]annulene”
    Bull. Chem. Soc. Jpn. 87 (2014) 323-333.
    DOI: 10.1246/bcsj.20130279
  66. M. Tsuji, A. Saeki, Y. Koizumi, N. Matsuyama, C. Vijayakumar, and S. Seki, “Benzobisthiazole as Weak Donor for Improved Photovoltaic Performance: Microwave Conductivity Technique Assisted Molecular Engineering”
    Adv. Funct. Mater. 24 (2014) 28-36.
    DOI: 10.1002/adfm.201301371
  67. M. Ide, Y. Koizumi, A. Saeki, Y. Izumiya, H. Ohkita, S. Ito, and S. Seki, “Near-Infrared Absorbing Thienoisoindigo-Based Copolymers for Organic Photovoltaics”
    J. Phys. Chem. C 117 (2013) 26859-26870.
    DOI: 10.1021/jp4104728
  68. Q. Xiao, T. Sakurai, T. Fukino, K. Akaike, Y. Honsho, A. Saeki, S. Seki, K. Kato, M. Takata, and T. Aida, “Propeller-Shaped Fused Oligothiophenes: A Remarkable Effect of the Topology of Sulfur Atoms on Columnar Stacking”
    J. Am. Chem. Soc. 135 (2013) 18268-18271.
    DOI: 10.1021/ja4092769
  69. K. Akaike, H. Enozawa, T. Kajitani, M. Koizumi, A. Kosaka, D. Hashizume, Y. Koizumi, A. Saeki, S. Seki, and T. Fukushima, “Tetrathiafulvalene Hybridized with Indacenetetraone as Visible-light-harvesting Electron Acceptor Applicable to Bulk-heterojunction Organic Photovoltaics”
    Chem. Lett. 42 (2013) 1417-1419.
    DOI: 10.1246/cl.130702
  70. H. Shigemitsu, I. Hisaki, E. Kometani, D. Yasumiya, Y. Sakamoto, K. Osaka, T. S. Thakur, A. Saeki, S. Seki, F. Kimura, T. Kimura, N. Tohnai, M. Miyata, “Crystalline Supramolecular Nanofibers Based on Dehydrobenzoannulene Derivatives”
    Chem. - Eur. J. 19 (2013) 15366-15377.
    DOI: 10.1002/chem.201301967
  71. Y. Inada, T. Amaya, Y. Shimizu, A. Saeki, T. Otsuka, R. Tsuji, S. Seki, and T. Hirao, “Nitrogen-doped Graphitic Carbon Synthesized by Laser Annealing of Sumanenemonoone Imine as a Bowl-shaped π-Conjugated Molecule”
    Chem. -Asian J. 8 (2013) 2569-2574.
    DOI: 10.1002/asia.201300500
  72. J. Guo, Y. Xu, S. Jin, L. Chen, T. Kaji, Y. Honsho, M. A. Addicoat, J. Kim, A. Saeki, H. Ihee, S. Seki, S. Irle, M. Hiramoto, J. Gao, and D. Jiang, “Conjugated organic framework with three-dimensionally ordered stable structure and delocalized π clouds”
    Nature Commun. 4 (2013) 2736/1-8.
    DOI: 10.1038/ncomms3736
  73. Y. Honsho, T. Miyakai, T. Sakurai, A. Saeki, and S. Seki “Evaluation of Intrinsic Charge Carrier Transport at Insulator-Semiconductor Interfaces Probed by a Non-Contact Microwave-Based Technique”
    Sci. Rep. 3 (2013) 3182/1-6.
    DOI: 10.1038/srep03182
  74. M. Ide, Y. Koizumi, A. Saeki, and S. Seki, “Ambipolar Low-bandgap Copolymers Consisting of Dithienoketopyrrole for All-Polymer Solar Cells”
    J. Photopolym. Sci. Tech. 26 (2013) 217-221.
    DOI: 10.2494/photopolymer.26.217
  75. S. Suwa, Y. Maeyoshi, S. Tsukuda, M. Sugimoto, A. Saeki, and S. Seki, “Fullerene Nanowires Produced by Single Particle Nanofabrication Technique and Their Photovoltaic Applications”,
    J. Photopolym. Sci. Tech. 26 (2013) 193-197.
    DOI: 10.2494/photopolymer.26.193
  76. H. Shigemitsu, I. Hisaki, H. Senga, D. Yasumiya, T. S. Thakur, A. Saeki, S. Seki, N. Tohnai, M. Miyata, “Structural Transformation between Supramolecular Nanofibers with Drastic Change of Conductivity by Heat and Ultrasound”
    Chem. -Asian J. 8 (2013) 1372-1376.
    DOI: 10.1002/asia.201300258
  77. S. S. Babu, M. J. Hollamby, J. Aimi, H. Ozawa, A. Saeki, S. Seki, K. Kobayashi, K. Hagiwara, M. Yoshizawa, H. Möhwald, and T. Nakanishi “Nonvolatile liquid anthracenes for facile full-colour luminescence tuning at single blue-light excitation”
    Nature Commun.4 (2013) 1969/1-8.
    DOI: 10.1038/ncomms2969
  78. T. Okubo, H. Anma, N. Tanaka, K. Himoto, S. Seki, A. Saeki, M. Maekawa, and Takayoshi Kuroda-Sowa, “Crystal structure and carrier transport properties of a new semiconducting 2D coordination polymer with a 3,5-dimethylpiperidine dithiocarbamate ligand”
    Chem. Commun. 49 (2013) 4316-4318.
    DOI: 10.1039/c2cc37137e
  79. X. Lin, M. Hirono, T. Seki, H. Kurata, T. Karatsu, A. Kitamura, D. Kuzuhara, H. Yamada, T. Ohba, A. Saeki, S. Seki, S. Yagai, “Covalent Modular Approach for Dimension-Controlled Self-Organization of Perylene Bisimide Dyes”
    Chem. –Eur. J. 19 (2013) 6561-6565.
    DOI: 10.1002/chem.201300039
  80. T. Suzuki, T. Okamoto, A. Saeki, S. Seki, H. Sato, and Y. Matsuo, “Formation of Photoconductive Nanowires of Tetracene Derivative in Composite Thin Film”
    ACS Appl. Mater. Interfaces 5 (2013) 1937-1942.
    DOI: 10.1021/am302914w
  81. A. Asano, Y. Maeyoshi, S. Watanabe, A. Saeki, M. Sugimoto, M. Yoshikawa, H. Nanto, S. Tsukuda, S.-I. Tanaka, S. Seki, “Sugar nanowires based on cyclodextrin on quartz crystal microbalance for gas sensing with ultra-high sensitivity”
    Radiat. Phys. Chem. 84 (2013) 196-199.
    DOI: 10.1016/j.radphyschem.2012.06.018
  82. B. Balan, C. Vijayakumar, A. Saeki, Y. Koizumi, M. Tsuji, and S. Seki “Optical and electrical properties of dithienothiophene based conjugated polymers: medium donor vs. weak, medium, and strong acceptors”
    Polym. Chem. 4 (2013) 2293-2303.
    DOI: 10.1039/c3py21127d
  83. M.-C. Yeh, Y.-L. Su, M.-C. Tzeng, C. W. Ong, T. Kajitani, H. Enozawa, M. Takata, Y. Koizumi, A. Saeki, S. Seki, and T. Fukushima, “Amphiphilic Design of a Discotic Liquid-Crystalline Molecule for Dipole Manipulation: Hierarchical Columnar Assemblies with a 2D Superlattice Structure”
    Angew. Chem. Int. Ed. 52 (2013) 1031-1034.
    DOI: 10.1002/anie.201207708
  84. T. Adachi, L. Tong, J. Kuwabara, T. Kanbara, A. Saeki, S. Seki, and Y. Yamamoto, “Spherical Assemblies from π-Conjugated Alternating Copolymers: Toward Optoelectronic Colloidal Crystals”
    J. Am. Chem. Soc. 135 (2013) 870-876.
    DOI: 10.1021/ja3106626
  85. Y. Koizumi, M. Ide, A. Saeki, C. Vijayakumar , B. Balan, M. Kawamoto, and S. Seki “Thienoisoindigo-based low-band gap polymers for organic electronic devices”
    Polym. Chem. 4 (2013) 484-494.
    DOI: 10.1039/c2py20699d
  86. Y. Yasutani, A. Saeki, T. Fukumatsu, Y. Koizumi, and S. Seki, “Unprecedented High Local Charge-carrier Mobility in P3HT Revealed by Direct and Alternating Current Methods”
    Chem. Lett. 42 (2013) 19-21.
    DOI: 10.1246/cl.2013.19
  87. Y. Matsuo, H. Oyama, I. Soga, T. Okamoto, H. Tanaka, A. Saeki, S. Seki, and E. Nakamura, “1-Aryl-4-Silylmethyl[60]fullerenes: Synthesis, Properties, and Photovoltaic Performance”
    Chem. Asian J. 8 (2013) 121-128.
    DOI: 10.1002/asia.201200726
  88. A. Saeki, S. Yoshikawa, M. Tsuji, Y. Koizumi, M. Ide, C. Vijayakumar, and S. Seki, “A Versatile Approach to Organic Photovoltaics Evaluation Using White Light Pulse and Microwave Conductivity”
    J. Am. Chem. Soc. 134 (2012) 19035-19042.
    DOI: 10.1021/ja309524f
  89. X. Feng , L. Chen , Y. Honsho, O. Saengsawang , L. Liu, L. Wang, A. Saeki, S. Irle, S. Seki, Y. Dong, and D. Jiang, “An Ambipolar Conducting Covalent Organic Framework with Self-Sorted and Periodic Electron Donor-Acceptor Ordering”
    Adv. Mater.24 (2012) 3026-3031.
    DOI: 10.1002/adma.201201185
  90. X. Ding, X. Feng, A. Saeki, S. Seki, A. Nagai, and D. Jiang, “Conducting metallophthalocyanine 2D covalent organic frameworks: the role of central metals in controlling π-electronic functions”
    Chem. Commun. 48 (2012) 8952-8954.
    DOI: 10.1039/c2cc33929c
  91. S. Seki, A. Saeki, W. Choi, Y. Maeyoshi, M. Omichi, A. Asano, K. Enomoto, C. Vijayakumar, M. Sugimoto, S. Tsukuda, and S.-i. Tanaka, “Semiconducting Cross-Linked Polymer Nanowires Prepared by High-Energy Single-Particle Track Reactions”
    J. Phys. Chem. B 116 (2012) 12857-12863.
    DOI: 10.1021/jp3069249
  92. S. Kervyn, T. Nakanishi, J. Aimi, A. Saeki, S. Seki, B. Champagne, and D. Bonifazi, “Nanostructured Cocrystals of a Borazine with [60]Fullerene”
    Chem. Lett. 41 (2012) 1210-1212.
    DOI: 10.1246/cl.2012.1210
  93. S. Tanaka, T. Sakurai, Y. Honsho, A. Saeki, S. Seki, K. Kato, M. Takata, A. Osuka, T. Aida, “Toward Ultralow-Bandgap Liquid Crystalline Semiconductors: Use of Triply Fused Metalloporphyrin Trimer–Pentamer as Extra-large π-Extended Mesogenic Motifs”
    Chem. – Eur. J. 18 (2012) 10554-10561.
    DOI: 10.1002/chem.201201101
  94. T. J. Kramer, S. S. Babu, A. Saeki, S. Seki, J. Aimi, and T. Nakanishi, “CdSe Nanocrystal/C60-liquid composite material with enhanced photoelectrochemical performance”
    J. Mater. Chem.22 (2012) 22370-22373.
    DOI: 10.1039/c2jm35294j
  95. A. Asano, Y. Maeyoshi, K. Takano, M. Omichi, M. Sugimoto, M. Yoshikawa, S. Tsukuda, S.-i. Tanaka, A. Saeki, and S. Seki, “Fabrication of Nanowires Based on Polystyrene Derivatives by Single Particle Nano-Fabrication Technique”
    J. Photopolym. Sci. Tech. 25 (2012) 685-688.
    DOI: 10.2494/photopolymer.25.685
  96. B. Balan, C. Vijayakumar, M. Tsuji, A. Saeki, and S. Seki, “Detection and Distinction of DNT and TNT with a Fluorescent Conjugated Polymer Using the Microwave Conductivity Technique”
    J. Phys. Chem. B 116 (2012) 10371-10378.
    DOI: 10.1021/jp304791r
  97. Y. Yasutani, Y. Honsho, A. Saeki, and S. Seki, “Polycarbazoles: Relationship between intra- and intermolecular charge carrier transports”
    Synth. Met. 162 (2012) 1713-1721.
    DOI: 10.1016/j.synthmet.2012.07.005
  98. Y. Maeyoshi, A. Saeki, S. Suwa, M. Omichi, H. Marui, A. Asano, S. Tsukuda, M. Sugimoto, A. Kishimura, K. Kataoka, and S. Seki, “Fullerene nanowires as a versatile platform for organic electronics”
    Sci. Rep. 2 (2012) 600/1-6.
    DOI: 10.1038/srep00600
  99. C. Vijayakumar, B. Balan, A. Saeki, T. Tsuda, S. Kuwabata, and S. Seki, “Gold Nanoparticle Assisted Self-Assembly and Enhancement of Charge Carrier Mobilities of a Conjugated Polymer”
    J. Phys. Chem. C 116 (2012) 17343-17350.
    DOI: 10.1021/jp3039253
  100. A. Asano, M. Omichi, S. Tsukuda, K. Takano, M. Sugimoto, A. Saeki, and S. Seki, “Fabrication and Arrangement of “Clickable” Nanowires by the Single-Particle Nanofabrication Technique”
    J. Phys. Chem. C 116 (2012) 17274-17279.
    DOI: 10.1021/jp3046406
  101. T. Fukumatsu, A. Saeki, and S. Seki, “Separation of Intra- and Inter-Molecular Charge Carrier Mobilities of Poly(3-hexylthiophene) in Insulating Polystyrene Matrix”
    J. Photopolym. Sci. Tech. 25 (2012) 665-668.
    DOI: 10.2494/photopolymer.25.665
  102. K. Takano, A. Asano, Y. Maeyoshi, H. Marui, M. Omichi, A. Saeki, S. Seki, T. Satoh, Y. Ishii, T. Kamiya, M. Koka, T. Ohkubo, M. Sugimoto, and H. Nishikawa, “Microprocessing of Arched Bridge Structures with Epoxy Resin by Proton Beam Writing”
    J. Photopolym. Sci. Tech. 25 (2012) 43-46.
    DOI: 10.2494/photopolymer.25.43 [ch0]
  103. T. Osawa, T. Kajitani, D. Hashizume, H. Ohsumi, S. Sasaki, M. Takata, Y. Koizumi, A. Saeki, S. Seki, T. Fukushima, and T. Aida, “Wide-Range 2D Lattice Correlation Unveiled for Columnarly Assembled Triphenylene Hexacarboxylic Esters”
    Angew. Chem. Int. Ed. 51 (2012) 7990-7993.
    DOI: 10.1002/anie.201203077 [ch0]
  104. S. Yagai, Y. Goto, X. Lin, T. Karatsu, A. Kitamura, D. Kuzuhara, H. Yamada, Y. Kikkawa, A. Saeki, and S. Seki, “Self-Organization of Hydrogen-Bonding Naphthalene Chromophores into J-type Nanorings and H-type Nanorods: Impact of Regioisomerism”
    Angew. Chem. Int. Ed.51 (2012) 6643-6647.
    DOI: 10.1002/anie.201201436
  105. C. Vijayakumar, A. Saeki, and S. Seki, “Optoelectronic Properties of Dicyanofluorene-Based n-Type Polymers”
    Chem. Asian J. 7 (2012) 1845-1852.
    DOI: 10.1002/asia.201200082
  106. T. Uemura, N. Uchida, A. Asano, A. Saeki, S. Seki, M. Tsujimoto, S. Isoda, and S. Kitagawa, “Highly Photoconducting π-Stacked Polymer Accommodated in Coordination Nanochannels”
    J. Am. Chem. Soc. 134 (2012) 8360-8363.
    DOI: 10.1021/ja301903x
  107. T. Fukumatsu, A. Saeki, and S. Seki “Charge Carrier Mobilities in Amorphous Triphenylamine–Fluorene Copolymers: Role of Triphenylamine Unit in Intra- and Intermolecular Charge Transport”
    Appl. Phys. Express 5 (2012) 061701/1-3.
    DOI: 10.1143/APEX.5.061701
  108. X. Feng, L. Liu, Y. Honsho, A. Saeki, S. Seki, S. Irle, Y. Dong, A. Nagai, and D. Jiang “High-Rate Charge-Carrier Transport in Porphyrin Covalent Organic Frameworks: Switching from Hole to Electron to Ambipolar Conduction”
    Angew. Chem. 124 (2012) 2672-2676.
    DOI: 10.1002/ange.201106203 [ch0]
  109. S. S. Babu, J. Aimi, H. Ozawa, N. Shirahata, A. Saeki, S. Seki, A. Ajayaghosh, H. Möhwald, and T. Nakanishi “Solvent-Free Luminescent Organic Liquids”
    Angew. Chem. 124 (2012) 3447-3451.
    DOI: 10.1002/ange.201108853
  110. Y. Morisaki, S. Ueno, A. Saeki, A. Asano, S. Seki, and Y. Chujo “π-Electron-System-Layered Polymer: Through-Space Conjugation and Properties as a Single Molecular Wire”
    Chem. -Eur. J. 18 (2012) 4216-4224.
    DOI: 10.1002/chem.201103653
  111. B. Balan, C. Vijayakumar, A. Saeki, Y. Koizumi, and S. Seki “p/n Switching of Ambipolar Bithiazole–Benzothiadiazole-Based Polymers in Photovoltaic Cells”
    Macromolecules 45 (2012) 2709-2719.
    DOI: 10.1021/ma202778p [ch0]
  112. Y. Honsho, A. Saeki, and S. Seki, “Effects of Molecular Structure on Intramolecular Charge Carrier Transport in Dithieno [3,2-b:2’,3’-d] Pyrrole-Based Conjugated Copolymers”,
    Int. J. Spectroscopy 2012 (2012) 983523/1-7.
    DOI: 10.1155/2012/983523
  113. Y. Maeyoshi, K. Takano, A. Asano, H. Marui, M. Omichi, T. Satoh, T. Kamiya, Y. Ishii, T. Ohkubo, M. Koka, W. Kada, M. Sugimoto, H. Nishikawa, A. Saeki, and S. Seki “Fabrication of Poly(9,9’-dioctylfluorene)-Based Nano- and Microstructures by Proton Beam Writing”
    Jpn.J. Appl. Phys. 51 (2012) 045201/1-4.
    DOI: 10.1143/JJAP.51.045201 [ch0]
  114. Y. Hayashi, N. Obata, M. Tamaru, S. Yamaguchi, Y. Matsuo, A. Saeki, S. Seki, Y. Kureishi, S. Saito, S. Yamaguchi, and H. Shinokubo “Facile Synthesis of Biphenyl-Fused BODIPY and Its Property”
    Org. Lett.14 (2012) 866–869.
    DOI: 10.1021/ol2033916
  115. R. Charvet, Y. Yamamoto, T. Sasaki, J. Kim, K. Kato, M. Takata, A. Saeki, S. Seki, and T. Aida, “Segregated and Alternately Stacked Donor/Acceptor Nanodomains in Tubular Morphology Tailored with Zinc Porphyrin−C60 Amphiphilic Dyads: Clear Geometrical Effects on Photoconduction”
    J. Am. Chem. Soc. 134 (2012) 2524−2527.
    DOI: 10.1021/ja211334k
  116. I. Hisaki, E. Kometani, H. Shigemitsu, A. Saeki, S. Seki, N. Tohnai, and M. Miyata, “Polymorphism of Dehydrobenzo[14]annulene Possessing Two Methyl Ester Groups in Noncentrosymmetric Positions”
    Cryst. Growth Des. 11 (2011) 5488-5497.
    DOI: 10.1021/cg201075z
  117. W. Zhang, W. Jin, T. Fukushima, A. Saeki, S. Seki, and T. Aida, “Supramolecular Linear Heterojunction Composed of Graphite-Like Semiconducting Nanotubular Segments”,
    Science 334 (2011) 340-343.
    DOI: 10.1126/science.1210369
  118. Y. Shen, J. S. Reparaz, M. R. Wagner, A. Hoffmann, C. Thomsen, J.-O Lee, S. Heeg, B. Hatting, S. Reich, A. Saeki, S. Seki, K. Yoshida, S. S. Babu, H. Möhwald, and T. Nakanishi, “Assembly of carbon nanotubes and alkylated fullerenes: nanocarbon hybrid towards photovoltaic applications”
    Chem. Sci. 2 (2011) 2243-2250.
    DOI: 10.1039/c1sc00360g
  119. S. Wan, F. Gándara, A. Asano, H. Furukawa, A. Saeki, S. K. Dey, L. Liao, M. W. Ambrogio, Y. Y. Botros, X. Duan, S. Seki, J. F. Stoddart, and O. M. Yaghi, “Covalent Organic Frameworks with High Charge Carrier Mobility”
    Chem. Mater. 23 (2011) 4094–4097.
    DOI: 10.1021/cm201140r
  120. A. Saeki, Y. Yamamoto, Y. Koizumi, T. Fukushima, T. Aida, and S. Seki “Photoconductivity of Self-Assembled Hexabenzocoronene Nanotube: Insight into the Charge Carrier Mobilities on Local and Long-Range Scales”
    J. Phys. Chem. Lett. 2 (2011) 2549–2554.
    DOI: 10.1021/jz201223e
  121. A. Saeki, N. Yamamoto, Y. Yoshida, and T. Kozawa, “Geminate Charge Recombination in Liquid Alkane with Concentrated CCl4: Effects of CCl4 Radical Anion and Narrowing of Initial Distribution of Cl–”,
    J. Phys. Chem. A 115 (2011) 10166–10173.
    DOI: 10.1021/jp205989r
  122. X. Ding, L. Chen, Y. Honsho, X. Feng, O. Saengsawang, J. Guo, A. Saeki, S. Seki, S. Irle, S. Nagase, V. Parasuk, and D. Jiang, “An n-Channel Two-Dimensional Covalent Organic Framework”
    J. Am. Chem. Soc. 133 (2011) 14510–14513.
    DOI: 10.1021/ja2052396
  123. A. Saeki, M. Tsuji, and S. Seki, “Direct Evaluation of Intrinsic Optoelectronic Performance of Organic Photovoltaic Cells with Minimizing Impurity and Degradation Effects”
    Adv. Energy Mater. 1 (2011) 661–669.
    DOI: 10.1002/aenm.201100143 [ch0]
  124. J. Terao, K. Ikai, N. Kambe, S. Seki, A. Saeki, K. Ohkoshi, T. Fujihara, and Y. Tsuji, “Synthesis of a head-to-tail-type cyclodextrin-based insulated molecular wire”
    Chem. Commun. 47 (2011) 6816-6818.
    DOI: 10.1039/c1cc12231b
  125. A. Saeki, T. Fukumatsu, and S. Seki, “Intramolecular Charge Carrier Mobility in Fluorene-Thiophene Copolymer Films Studied by Microwave Conductivity”
    Macromolecules 44 (2011) 3416–3424.
    DOI: 10.1021/ma2004844
  126. Y. Ie, K. Nishida, M. Karakawa, H. Tada, A. Asano, A. Saeki, S. Seki, and Y. Aso, “Air-Stable n-Type Organic Field-Effect Transistors Based on Solution-Processable, Electronegative Oligomers Containing Dicyanomethylene-Substituted Cyclopenta[b]thiophene”,
    Chem. – Eur. J. 17 (2011) 4750–4758.
    DOI: 10.1002/chem.201002995
  127. T. Sakurai, K. Tashiro, Y. Honsho, A. Saeki, S. Seki, A. Osuka, A. Muranaka, M. Uchiyama, J. Kim, S. Ha, K. Kato, M. Takata, and T. Aida, “Electron- or Hole-Transporting Nature Selected by Side-Chain-Directed π-Stacking Geometry: Liquid Crystalline Fused Metalloporphyrin Dimers”,
    J. Am. Chem. Soc. 133 (2011) 6537–6540.
    DOI: 10.1021/ja201272t
  128. T. Okamoto, K. Nakahara, A. Saeki, S. Seki, J. H. Oh, H. B. Akkerman, Z. Bao, and Y. Matsuo, “Aryl−Perfluoroaryl Substituted Tetracene: Induction of Face-to-Face π−π Stacking and Enhancement of Charge Carrier Properties”,
    Chem. Mater. 23 (2011) 1646–1649.
    DOI: 10.1021/cm200356y
  129. X. Ding, J. Guo, X. Feng, Y. Honsho, J. Guo, S. Seki, P. Maitarad, A. Saeki, S. Nagase, and D. Jiang, “Synthesis of Metallophthalocyanine Covalent Organic Frameworks That Exhibit High Carrier Mobility and Photoconductivity”
    Angew. Chem. Int. Ed. 50 (2011) 1289–1293.
    DOI: 10.1002/anie.201005919
  130. T. Okubo, N. Tanaka, K. H. Kim, H. Anma, S. Seki, A. Saeki, M. Maekawa, and T. Kuroda-Sowa “Crystal structure and carrier transport properties of a new 3D mixed-valence Cu(I)–Cu(II) coordination polymer including pyrrolidine dithiocarbamate ligand”
    Dalton Trans. 40 (2011) 2218–2224.
    DOI: 10.1039/c0dt01065k
  131. S. S. Babu, A. Saeki, S. Seki, H. Möhwald, and T. Nakanishi, “Millimeter-sized flat crystalline sheet architectures of fullerene assemblies with anisotropic photoconductivity”
    Phys. Chem. Chem. Phys. 13 (2011) 4830-4834.
    DOI: 10.1039/c0cp02265a
  132. J. Ohshita, Y. Hatanaka, S. Matsui, T. Mizumo, Y. Kunugi, Y. Honsho, A. Saeki, S. Seki, J. Tibbelin, H. Ottosson, and T. Takeuchi, “Effects of the silicon core structures on the hole mobility of star-shaped oligothiophenes”
    Dalton Trans. 39 (2010) 9314–9320.
    DOI: 10.1039/c0dt00224k
  133. W. Zhang, K. Ochi, M. Fujiki, M. Naito, M. Ishikawa, K.-i. Kaneto, W. Takashima, A. Saeki, and S. Seki, “Programmed High-Hole-Mobility Supramolecular Polymers from Disk-Shaped Molecules”
    Adv. Funct. Mater. 20 (2010) 3941–3947.
    DOI: 10.1002/adfm.201001072
  134. X. Zhang, T. Nakanishi, T. Ogawa, A. Saeki, S. Seki, Y. Shen, Y. Yamauchi, and M. Takeuchi, “Flowerlike supramolecular architectures assembled from C60 equipped with a pyridine substituent”
    Chem. Commun. 46 (2010) 8752–8754.
    DOI: 10.1039/c0cc03331f
  135. S. Ikeda, K. Okamoto, H. Yamamoto, A. Saeki, S. Tagawa, and T. Kozawa, “Radiation Chemistry of Fluoronaphthalene as a Candidate for Absorption Enhancement Component of Chemically Amplified Extreme Ultraviolet Resists”
    Jpn. J. Appl. Phys. 49 (2010) 096504/1-6.
    DOI: 10.1143/JJAP.49.096504
  136. S. Higashino, A. Saeki, K. Okamoto, S. Tagawa, and T. Kozawa, “Formation and Decay of Fluorobenzene Radical Anions Affected by Their Isomeric Structures and the Number of Fluorine Atoms”
    J. Phys. Chem. A 114 (2010) 8069–8074.
    DOI: 10.1021/jp102828g
  137. W.-S. Li, A. Saeki, Y. Yamamoto, T. Fukushima, S. Seki, N. Ishii, K. Kato, M. Takata, and T. Aida, “Use of Side-Chain Incompatibility for Tailoring Long-Range p/n Heterojunctions: Photoconductive Nanofibers Formed by Self-Assembly of an Amphiphilic Donor-Acceptor Dyad Consisting of Oligothiophene and Perylenediimide”
    Chem. –Asian J.5 (2010) 1566-1572.
    DOI: 10.1002/asia.201000111
  138. S. Prasanthkumar, A. Saeki, S. Seki and A. Ajayaghosh, “Solution Phase Epitaxial Self-Assembly and High Charge-Carrier Mobility Nanofibers of Semiconducting Molecular Gelators”
    J. Am. Chem. Soc.132 (2010) 8866-8867.
    DOI: 10.1021/ja103685j
  139. Y. Hizume, K. Tashiro, R. Charvet, Y. Yamamoto, A. Saeki, S. Seki, and T. Aida, “Chiroselective Assembly of a Chiral Porphyrin−Fullerene Dyad: Photoconductive Nanofiber with a Top-Class Ambipolar Charge-Carrier Mobility”
    J. Am. Chem. Soc. 132 (2010) 6628-6629.
    DOI: 10.1021/ja1014713
  140. A. Saeki, S. Seki, Y. Shimizu, T. Yamao, and S. Hotta, “Photogeneration of charge carrier correlated with amplified spontaneous emission in single crystals of a thiophene/phenylene co-oligomer”
    J. Chem. Phys.132 (2010) 134509/1-134509/7.
    DOI: 10.1063/1.3367883 [ch0]
  141. Y. He, Y. Yamamoto, W. Jin, T. Fukushima, A. Saeki, S. Seki, N. Ishii, and T. Aida, “Hexabenzocoronene Graphitic Nanotube Appended with Dithienylethene Pendants: Photochromism for the Modulation of Photoconductivity”
    Adv. Mater. 22 (2010) 829-832.
    DOI: 10.1002/adma.200902601
  142. K. Natsuda, T. Kozawa, K. Okamoto, A. Saeki, and S. Tagawa, “Correlation between C37 Parameters and Acid Yields in Chemically Amplified Resists upon Exposure to 75 keV Electron Beam”
    Jpn. J. Appl. Phys. 48 (2009) 06FC05/1-06FC05/4.
    DOI: 10.1143/JJAP.48.06FC05
  143. J. Terao, Y. Tanaka, S. Tsuda, N. Kambe, M. Taniguchi, T. Kawai, A. Saeki, and S. Seki, “Insulated Molecular Wire with Highly Conductive π-Conjugated Polymer Core”
    J. Am. Chem. Soc. 131 (2009) 18046-18047.
    DOI: 10.1021/ja908783f
  144. R. Charvet, S. Acharya, J. P. Hill, M. Akada, M. Liao, S. Seki, Y. Honsho, A. Saeki, and K. Ariga, “Block-Copolymer-Nanowires with Nanosized Domain Segregation and High Charge Mobilities as Stacked p/n Heterojunction Arrays for Repeatable Photocurrent Switching”
    J. Am. Chem. Soc. 131 (2009) 18030-18031.
    DOI: 10.1021/ja907414z
  145. Y. Yamamoto, G. Zhang, W. Jin, T. Fukushima, N. Ishii, A. Saeki, S. Seki, S. Tagawa, T. Minari, K. Tsukagoshi, and T. Aida, “Ambipolar-transporting coaxial nanotubes with a tailored molecular graphene–fullerene heterojunction”
    Proc. Natl. Acad. Sci. 106 (2009) 21051-21056.
    DOI: 10.1073/pnas.0905655106 [ch0]
  146. Md. A. Alam, J. Motoyanagi, Y. Yamamoto, T. Fukushima, J. Kim, K. Kato, M. Takata, A. Saeki, S. Seki, S. Tagawa, and T. Aida, “”Bicontinuous Cubic” Liquid Crystalline Materials from Discotic Molecules: A Special Effect of Paraffinic Side Chains with Ionic Liquid Pendants”
    J. Am. Chem. Soc. 131 (2009) 17722-17723.
    DOI: 10.1021/ja905373d
  147. Y. Ie, M. Nitani, T. Uemura, Y. Tominari, J. Takeya, Y. Honsho, A. Saeki, S. Seki, and Y. Aso, “Comprehensive Evaluation of Electron Mobility for a Trifluoroacetyl-Terminated Electronegative Conjugated Oligomer”
    J. Phys. Chem. C 113 (2009) 17189-17193.
    DOI: 10.1021/jp9077322
  148. A. Saeki, T. Kozawa, and S. Tagawa, “Origin of frequency-dependent line edge roughness: Monte Carlo and fast Fourier-transform studies”
    Appl. Phys. Lett. 95 (2009) 103106/1-3.
    DOI: 10.1063/1.3225149
  149. Y. Yamamoto, W. Jin, T. Fukushima, T. Minari, K. Tsukagoshi, A. Saeki, S. Seki, S. Tagawa, and T. Aida, “Charge Transport Properties of Hexabenzocoronene Nanotubes by Field Effect: Influence of the Oligoether Side Chains on the Mobility”
    Chem. Lett. 38 (2009) 888-889.
    DOI: 10.1246/cl.2009.888
  150. A. Saeki, S.-i. Ohsaki, Y. Koizumi, S. Seki, and S. Tagawa, “Impact of side-chain length on alternating current mobility of charge carriers in regioregular poly(3-alkylthiophene) films”
    Synth. Met. 159 (2009) 1800-1803.
    DOI: 10.1016/j.synthmet.2009.05.029 [ch0]
  151. H. Yamamoto, T. Kozawa, A. Saeki, S. Tagawa, T. Mimura, H. Yukawa, and J. Onodera , “Reactivity of Halogenated Resist Polymer with Low-Energy Electrons”
    Jpn. J. Appl. Phys. 48 (2009) 06FC09-1 - 06FC09-3.
    DOI: 10.1143/JJAP.48.06FC09
  152. A. Saeki, T. Kozawa, and S. Tagawa, “Relationship between Resolution, Line Edge Roughness, and Sensitivity in Chemically Amplified Resist of Post-Optical Lithography Revealed by Monte Carlo and Dissolution Simulations”
    Appl. Phys. Express 2 (2009) 075006/1-3.
    DOI: 10.1143/APEX.2.075006
  153. T. Kozawa, K. Okamoto, A. Saeki, and S. Tagawa, “Difference of Spur Distribution in Chemically Amplified Resists upon Exposure to Electron Beam and Extreme Ultraviolet Radiation”
    Jpn. J. Appl. Phys. 48 (2009) 056508/1-4.
    DOI: 10.1143/JJAP.48.056508 [ch0]
  154. J. Motoyanagi, Y. Yamamoto, A. Saeki, M. A. Alam, A. Kimoto, A. Kosaka, T. Fukushima, S. Seki, S. Tagawa, and T. Aida, “Unusual Side-Chain Effects on Charge-Carrier Lifetime in Discotic Liquid Crystals”,
    Chem. Asian J. 4 (2009) 876-880.
    DOI: 10.1002/asia.200800481
  155. Y. Ohnishi, A. Saeki, S. Seki, and S.Tagawa, “Conformational Relaxation of σ-Conjugated Polymer Radical Anion on Picosecond Scale”,
    J. Chem. Phys. 130 (2009) 204907/1-6.
    DOI: 10.1063/1.3139447
  156. L. Chen, J. Kim, T. Ishizuka, Y. Honsho, A. Saeki, S. Seki, H. Ihee, and D. Jiang, “Noncovalently Netted, Photoconductive Sheets with Extremely High Carrier Mobility and Conduction Anisotropy from Triphenylene-Fused Metal Trigon Conjugates”
    J. Am. Chem. Soc. 131 (2009) 7287-7292.
    DOI: 10.1021/ja901357h
  157. L. Chen, L. Wang, X. Gao, S. Nagase, Y. Honsho, A. Saeki, S. Seki and D. Jiang, “The Non-Covalent Assembly of Benzene-Bridged Metallosalphen Dimers: Photoconductive Tapes with Large Carrier Mobility and Spatially Distinctive Conduction Anisotropy”,
    Chem. Commun. (2009) 3119-3121.
    DOI: 10.1039/b904337c [ch0]
  158. Y. Honsho, A. Asano, S. Seki, T. Sunagawa, and A. Saeki, “Intra-Molecular Mobility of Holes Along Rod-Like Helical Si Backbones in Optically Active Polysilanes”,
    Synth. Met. 159 (2009) 843-846.
    DOI: 10.1016/j.synthmet.2009.01.022
  159. Y. Ie, T. Uto, A. Saeki, S. Seki, S. Tagawa, and Y. Aso, “Photovoltaic Performance and Charge Carrier Mobility of Dendritic Oligothiophene Bearing Perylene bis(dicarboximide) Groups”,
    Synth. Met. 159 (2009) 797-801.
    DOI: 10.1016/j.synthmet.2009.01.005
  160. T. Amaya, S. Seki, T. Moriuchi, K. Nakamoto, T. Nakata, H. Sakane, A. Saeki, S. Tagawa, and T. Hirao, “Anisotropic Electron Transport Properties in Sumanene Crystal”,
    J. Am. Chem. Soc. 131 (2009) 408-409.
    DOI: 10.1021/ja805997v
  161. A. Saeki, S. Seki, N. Satoh, K. Yamamoto, and S. Tagawa, “Long-Lived Hole Stabilized at a Triphenylamine Core and Shielded by Rigid Phenylazomethine Dendrons: A Pulse Radiolysis Study”,
    J. Phys. Chem. B 112 (2008) 15540-15545.
    DOI: 10.1021/jp805266v
  162. T. Sakurai, K. Shi, H. Sato, K. Tashiro, A. Osuka, A. Saeki, S. Seki, S. Tagawa, S. Sasaki, H. Masunaga, K. Osaka, M. Takata, and T. Aida, “Prominent Electron Transport Property Observed for Triply Fused Metalloporphyrin Dimer: Directed Columnar Liquid Crystalline Assembly by Amphiphilic Molecular Design”,
    J. Am. Chem. Soc. 130 (2008) 13812-13813.
    DOI: 10.1021/ja8030714
  163. A. Saeki, S. Ohsaki, S. Seki, and S. Tagawa, “Electrodeless Determination of Charge Carrier Mobility in Poly(3-hexylthiophene) Films Incorporating Perylenediimide as Photoconductivity Sensitizer and Spectroscopic Probe”,
    J. Phys. Chem. C 112 (2008) 16643-16650.
    DOI: 10.1021/jp8039252
  164. S. Seki, A. Saeki, A. Acharya, Y. Koizumi, S. Tagawa, and K. Mochida, “Intra-Molecular Mobility of Charge Carriers Along Oligogermane Backbones Studied by Flash Photolysis Time-Resolved Microwave Conductivity and Transient Optical Spectroscopy Techniques”,
    Radiat. Phys. Chem. 77 (2008) 1323-1327.
    DOI: 10.1016/j.radphyschem.2008.05.027
  165. A. Saeki, S. Ohsaki, Y. Koizumi, S. Seki, and S. Tagawa, “Electrode-Less Measurement of Conductivity Transients in Poly(n-alkylthiophene)s Induced by 193nm Photoexcitation”,
    J. Photopolym. Sci. Technol. 21 (2008) 559-562.
    DOI: 10.2494/photopolymer.21.559
  166. K. Natsuda, T. Kozawa, A. Saeki, S. Tagawa, T. Kai, and T. Shimokawa, “Study of the Reaction of Acid Generators with Epithermal and Thermalized Electrons”,
    Jpn. J. Appl. Phys. 47 (2008) 4932-4935.
    DOI: 10.1143/JJAP.47.4932
  167. A. Saeki, T. Kozawa, S. Tagawa, H. B. Cao, H. Deng, and M. J. Leeson, “Simulation of Amine Concentration Dependence on Line Edge Roughness After Development in Electron Beam Lithography”,
    J. Appl. Phys. 104 (2008) 024303-1 - 024303-6.
    DOI: 10.1063/1.2952046 [ch0]
  168. W.-S. Li, Y. Yamamoto, T. Fukushima, A. Saeki, S. Seki, S. Tagawa, H. Masunaga, S. Sasaki, M. Takata, and T. Aida, “Amphiphilic Molecular Design as a Rational Strategy for Tailoring Bicontinuous Electron Donor and Acceptor Arrays: Photoconductive Liquid Crystalline Oligothiophene−C60 Dyads”,
    J. Am. Chem. Soc. 130 (2008) 8886-8887.
    DOI: 10.1021/ja802757w
  169. K. Nagashima, T. Yanagida, H. Tanaka, S. Seki, A. Saeki, S. Tagawa, and T. Kawai, “Effect of the Heterointerface on Transport Properties of in Situ Formed MgO/Titanate Heterostructured Nanowires”
    J. Am. Chem. Soc. 130 (2008) 5378-5382.
    DOI: 10.1021/ja800367a
  170. I. Hisaki, Y. Sakamoto, H. Shigemitsu, N. Tohnai, M. Miyata, S. Seki, A. Saeki, and S. Tagawa, “Superstructure-Dependent Optical and Electrical Properties of an Unusual Face-to-Face, π-Stacked, One-Dimensional Assembly of Dehydrobenzo[12]annulene in the Crystalline State”
    Chem. Eur. J. 14 (2008) 4178-4187.
    DOI: 10.1002/chem.200800228
  171. Y. Umemoto, Y. Ie, A. Saeki, S. Seki, S. Tagawa, and Y. Aso, “Electronegative Oligothiophenes Fully Annelated with Hexafluorocyclopentene: Synthesis, Properties, and Intrinsic Electron Mobility”
    Org. Lett. 10 (2008) 1095-1098.
    DOI: 10.1021/ol703016g
  172. A. Saeki, S. Seki, T. Takenobu, Y. Iwasa, and S. Tagawa, “Mobility and Dynamics of Charge Carriers in Rubrene Single Crystals Studied by Flash-Photolysis Microwave Conductivity and Optical Spectroscopy”,
    Adv. Mater. 20 (2008) 920-923.
    DOI: 10.1002/adma.200702463
  173. T. Kozawa, A. Saeki, and S. Tagawa, “Point Spread Function for the Calculation of Acid Distribution in Chemically Amplified Resists for Extreme Ultraviolet Lithography”,
    Appl. Phys. Express 1 (2008) 027001-027003.
    DOI: 10.1143/APEX.1.027001
  174. A. Saeki, T. Kozawa, S. Tagawa, H. B. Cao, H. Deng, and M. J. Leeson , “Line Edge Roughness After Development in a Positive-Tone Chemically Amplified Resist of Post-Optical Lithography Investigated by Monte Carlo Simulation and a Dissolution Model”,
    Nanotechnology19 (2008) 015705-015709.
    DOI: 10.1088/0957-4484/19/01/015705
  175. H. Imahori, M. Ueda, S. Kang, H. Hayashi, S. Hayashi, H. Kaji, S. Seki, A. Saeki, S. Tagawa, T. Umeyama, Y. Matano, K. Yoshida, S. Isoda, M. Shiro, N. V. Tkachenko, and H. Lemmetyinen, “Effects of Porphyrin Substituents on Film Structure and Photoelectrochemical Properties of Porphyrin/Fullerene Composite Clusters Electrophoretically Deposited on Nanostructured SnO2 Electrodes”,
    Chem. Eur. J. 13 (2007) 10182-10193.
    DOI: 10.1002/chem.200700446
  176. H. Yamamoto, T. Kozawa, A. Saeki, K. Okamoto, S. Tagawa, K. Ohmori, M. Sato, and H. Komano, “Effect of Acid Diffusion and Polymer Structure on Line Edge Roughness”,
    Jpn. J. Appl. Phys. 46 (2007) 6187-6190.
    DOI: 10.1143/JJAP.46.6187
  177. A. Saeki, T. Kozawa, S. Tagawa, H. B. Cao, H. Deng, and M. J. Leeson, “Exposure Dose Dependence on Line Edge Roughness of a Latent Image in Electron Beam/Extreme Ultraviolet Lithographies Studied by Monte Carlo Technique”,
    J. Micro/Nanolith. MEMS MOEMS 6 (2007) 043004/1-6.
    DOI: 10.1117/1.2792178
  178. Y. Yamamoto, T. Fukushima, A. Saeki, S. Seki, S. Tagawa, N. Ishii, and T. Aida, “Molecular Engineering of Coaxial Donor-Acceptor Heterojunction by Coassembly of Two Different Hexabenzocoronenes: Graphitic Nanotubes with Enhanced Photoconducting Properties”,
    J. Am. Chem. Soc. 129 (2007) 9276-9277.
    DOI: 10.1021/ja073577q
  179. Y. Koizumi, S. Seki, K. Okamoto, A. Saeki, and S. Tagawa, “Radiation Induced One-Step One-pod Polymerization of Functional Conjugated Molecules”,
    J. Photopolym. Sci. Technol. 20 (2007) 97-99.
    DOI: 10.2494/photopolymer.20.97
  180. Y. Koizumi, S. Seki, A. Saeki, and S. Tagawa, “Electronic Properties of the Charge Carriers on Oligofluorene Backbone”,
    Radiat. Phys. Chem. 76 (2007) 1337-1341.
    DOI: 10.1016/j.radphyschem.2007.02.027
  181. K. Okamoto, T. Kozawa, A. Saeki, Y. Yoshida, and S. Tagawa, “Subpicosecond Pulse Radiolysis in Liquid Methyl-Substituted Benzene Derivatives”,
    Radiat. Phys. Chem. 76 (2007) 818-826.
    DOI: 10.1016/j.radphyschem.2006.06.001
  182. A. Saeki, T. Kozawa, Y. Ohnishi, and S. Tagawa, “Reactivity between Biphenyl and Precursor of Solvated Electrons in Tetrahydrofuran Measured by Picosecond Pulse Radiolysis in Near-Ultraviolet, Visible, and Infrared”,
    J. Phys. Chem. A 111 (2007) 1229-1235.
    DOI: 10.1021/jp067520m
  183. A. Saeki, S. Seki, Y. Koizumi, and S. Tagawa, “Dynamics of Photogenerated Charge Carrier and Morphology Dependence in Polythiophene Films Studied by In-situ Time-Resolved Microwave Conductivity and Transient Absorption Spectroscopy”,
    J. Photochem. Photobiol. A 186 (2007) 158-165.
    DOI: 10.1016/j.jphotochem.2006.08.008
  184. A. Saeki, T. Kozawa, K. Okamoto, and S. Tagawa, “Stroboscopic Picosecond Pulse Radiolysis using Near-Ultraviolet-Enhanced Femtosecond Continuum Generated by CaF2”,
    Jpn. J. Appl. Phys. 46 (2007) 407-411.
    DOI: 10.1143/JJAP.46.407
  185. Y. Yamamoto, T. Fukushima, Y. Suna, N. Ishii, A. Saeki, S. Seki, S. Tagawa, M. Taniguchi, T. Kawai, and T. Aida, “Photoconductive Coaxial Nanotubes of Molecularly Connected Electron Donor and Acceptor Layers”,
    Science 314 (2006) 1761-1764.
    DOI: 10.1126/science.1134441
  186. A. Saeki, T. Kozawa, S. Tagawa, and H. B. Cao, “Correlation between Proton Dynamics and Line Edge Roughness in Chemically Amplified Resist for Post-Optical Lithography”,
    J. Vac. Sci. Tehcnol. B 24 (2006) 3066-3072.
    DOI: 10.1116/1.2393250
  187. T. Kozawa, T. Shigaki, K. Okamoto, A.Saeki, S. Tagawa, T. Kai, and T. Shimokawa, “Analysis of Acid Yield Generated in Chemically Amplified Electron Beam Resist”,
    J. Vac. Sci. Technol. B 24 (2006) 3055-3060.
    DOI: 10.1116/1.2366656
  188. T. Kozawa, H. Yamamoto, A. Saeki, and S. Tagawa, “Effects of Low Energy Electrons on Pattern Formation in Chemically Amplified Resist”,
    J. Photopolym. Sci. Technol. 19 (2006) 361-366.
    DOI: 10.2494/photopolymer.19.361 [ch0]
  189. H. Yamamoto, T. Kozawa, K. Okamoto, A. Saeki, S. Tagawa, T. Ando, M. Sato, and H. Komano, “Reaction mechanism of fluorinated chemically amplified resists”,
    J. Vac. Sci. Technol. B 24 (2006) 1833-1836.
    DOI: 10.1116/1.2214711 [ch0]
  190. A. Saeki, S. Seki, and S. Tagawa, “Electrodeless Measurement of Charge Carrier Mobility in Pentacene by Microwave and Optical Spectroscopy Techniques”,
    J. Appl. Phys.100 (2006) 023703-023708.
    DOI: 10.1063/1.22146
  191. Y. Yamamoto, T. Fukushima, W. Jin, A. Kosaka, T. Hara, T. Nakamura, A. Saeki, S. Seki, S. Tagawa, and T. Aida, “A Glass Hook Allows Fishing of Hexa-peri-hexabenzocoronene Graphitic Nanotubes: Fabrication of a Macroscopic Fiber with Anisotropic Electrical Conduction”,
    Adv. Mater. 18 (2006) 1297-1300.
    DOI: 10.1002/adma.200502116
  192. S. Fratiloiu, F. C. Grozema, Y. Koizumi, S. Seki, A. Saeki, S. Tagawa, S. P. Dudek, and L. D. A. Siebbeles, “Electronic Structure and Optical Properties of Charged Oligofluorenes Studied by VIS/NIR Spectroscopy and Time-Dependent Density Functional Theory”,
    J. Phys .Chem. B 110 (2006) 5984-5993.
    DOI: 10.1021/jp055785f
  193. A. Acharya, S. Seki, A. Saeki, and S. Tagawa, “Photoconductivity in Fullerene-Doped Polysilane Thin Films”,
    Synth. Met. 156 (2006) 293-297.
    DOI: 10.1016/j.synthmet.2005.12.004
  194. A. Saeki, S. Seki, T. Sunagawa, K. Ushida, and S. Tagawa, “Charge-Carrier Dynamics in Polythiophene Films Studied by In-situ Measurement of Flash-Photolysis Time-Resolved Microwave Conductivity (FP-TRMC) and Transient Optical Spectroscopy (TOS)”,
    Phil. Mag. 86 (2006) 1261-1276.
    DOI: 10.1080/14786430500380159
  195. A. Saeki, T. Kozawa, and S. Tagawa, “Picosecond Pulse Radiolysis using Femtosecond White Light with a High S/N Spectrum Acquisition System in One Beam Shot”,
    Nucl. Instrum. Meth. A 556 (2006) 391-396.
    DOI: 10.1016/j.nima.2005.10.068
  196. A. Saeki, T. Kozawa, S. Tagawa, and H. B Cao, “Line Edge Roughness of a Latent Image in Post-Optical Lithography”,
    Nanotechnology 17 (2006) 1543-1546.
    DOI: 10.1088/0957-4484/17/6/001
  197. R. Yamagami, K. Kobayashi, A. Saeki, S. Seki, and S. Tagawa, “Photogenerated Hole Mobility in DNA Measured by Time-Resolved Microwave Conductivity”,
    J. Am. Chem .Soc.128 (2006) 2212-2213.
    DOI: 10.1021/ja058057e
  198. A. Saeki, T. Kozawa, Y. Yoshida, and S. Tagawa, “Multi Spur Effect on Decay Kinetics of Geminate Ion Recombination using Monte Carlo Technique”,
    Nucl. Instrum. Meth. B 234 (2005) 285-290.
    DOI: 10.1016/j.nimb.2005.02.002
  199. A. Saeki, T. Kozawa, S. Kashiwagi, K. Okamoto, G. Isoyama, Y. Yoshida, and S. Tagawa, “Synchronization of Femtosecond UV-IR Laser with Electron Beam for Pulse Radiolysis Studies”,
    Nucl. Instrum. Meth. A 546 (2005) 627-633.
    DOI: 10.1016/j.nima.2005.03.123
  200. T. Kozawa, K. Okamoto, A. Saeki, and S. Tagawa, “Effects of Dielectric Constant on Acid Generation in Chemically Amplified Resists for Post-Optical Lithography”,
    Jpn. J. Appl. Phys. 44 (2005) 3908-3912.
    DOI: 10.1143/JJAP.44.3908
  201. T. Kozawa, H. Yamamoto, A. Saeki, and S. Tagawa, “Proton and Anion Distribution and Line Edge Roughness of Chemically Amplified Electron Beam Resist”,
    J. Vac. Sci. Technol. B 23 (2005) 2716-2720.
    DOI: 10.1116/1.2131875
  202. Y. Doi, A. Saeki, Y. Koizumi, S. Seki, K. Okamoto, T. Kozawa, and S. Tagawa, “Nanopatterning of Polyfluorene Derivative using Electron-Beam Lithography”,
    J. Vac. Sci. Technol. B 23 (2005) 2051-2055.
    DOI: 10.1116/1.2050655
  203. A. Acharya, S. Seki, Y. Koizumi, A. Saeki, and S. Tagawa, “Photogeneration of Charge Carriers and Their Transport Properties in Poly[bis(p-n-butylphenyl)silane]”,
    J. Phys .Chem. B 109 (2005) 20174-20179.
    DOI: 10.1021/jp053300h
  204. A. Saeki, S. Seki, Y. Koizumi, T. Sunagawa, K. Ushida, and S. Tagawa, “Increase in the Mobility of Photogenerated Positive Charge Carriers in Polythiophene”,
    J. Phys .Chem. B 109 (2005) 10015-10019.
    DOI: 10.1021/jp0442145
  205. A. Acharya, S. Seki, A. Saeki, Y. Koizumi, and S. Tagawa, “Study of Transport Properties in Fullerene-Doped Polysilane Films using Flash Photolysis Time-Resolved Microwave Technique”,
    Chem. Phys. Lett. 404 (2005) 356-360.
    DOI: 10.1016/j.cplett.2005.02.003
  206. S. Seki, A. Acharya, Y. Koizumi, A. Saeki, S. Tagawa, and K. Mochida, “Mobilities of Charge Carriers in Dendrite and Linear Oligogermanes by Flash Photolysis Time-resolved Microwave Conductivity Technique”,
    Chem. Lett. 34 (2005) 1690-1691.
    DOI: 10.1246/cl.2005.1690
  207. A. Acharya, Y. Koizumi, S. Seki, A. Saeki, S. Tagawa, Y. Ie, and Y. Aso, “Effect of Substituents on Charge Carrier Dynamics in Thiophene Oligomers”,
    J. Photochem. Photobiol. A 173 (2005) 161-168.
    DOI: 10.1016/j.jphotochem.2005.01.016
  208. T. Kozawa, H. Yamamoto, A. Nakano, A. Saeki, K. Okamoto, and S. Tagawa, "Electron Dynamics in Chemically Amplified Resists",
    J. Photopolym. Sci .Technol. 17 (2004) 449-452.
    DOI: 10.2494/photopolymer.17.449
  209. S. Seki, S. Tsukuda, K. Maeda, Y. Matsui, A. Saeki, and S. Tagawa, “Inhomogeneous Distribution of Crosslinks in Ion Tracks in Polystylene and Polysilanes”,
    Phys. Rev. B 70 (2004) 144203-144210.
    DOI: 10.1103/PhysRevB.70.144203
  210. S. Tsukuda, S. Seki, A. Saeki, T. Kozawa, S. Tagawa, M. Sugimoto, A. Idesaki, and S. Tanaka, “Precise Control of Nanowire Formation Based on Polysilane for Photoelectronic Device Application”,
    Jpn. J. Appl. Phys. 43 (2004) 3810-3814.
    DOI: 10.1143/JJAP.43.3810
  211. T. Kozawa, A. Saeki, and S. Tagawa, “Modelling and Simulation of Chemically Amplified Electron Beam, X-ray and EUV Resist Processes”,
    J. Vac. Sci. Technol. B 22 (2004) 3489-3492.
    DOI: 10.1116/1.1823435
  212. A. Saeki, T. Kozawa, Y. Yoshida, and S. Tagawa, “Adjacent Effect on Positive Charge Transfer from Radical Cation of n-Dodecane to Scavenger Studied by Picosecond Pulse Radiolysis, Statistical Model, and Monte Carlo Simulation”,
    J. Phys .Chem. A 108 (2004) 1475-1481.
    DOI: 10.1021/jp036372m
  213. Y. Koizumi, S. Seki, A. Acharya, A. Saeki, and S. Tagawa, “Delocalization of Positive and Negative Charge Carriers on Oligo- and Poly-fluorenes Studied by Low-Temperature Matrix Isolation Technique”,
    Chem. Lett. 33 (2004) 1290-1291.
    DOI: 10.1246/cl.2004.1290
  214. T. Kozawa, A. Saeki, A. Nakano, Y. Yoshida, and S. Tagawa, “Relation between spatial resolution and reaction mechanism of chemically amplified resists for electron beam lithography”,
    J. Vac. Sci. Technol. B 21 (2003) 3149-3152.
    DOI: 10.1116/1.1619959
  215. T. Kawaguchi, S. Seki, K. Okamoto, A. Saeki, Y. Yoshida, and S. Tagawa, “Pulse Radiolysis Study of Radical Cations of Polysilanes”,
    Chem. Phys. Lett. 374 (2003) 353-357.
    DOI: 10.1016/S0009-2614(03)00740-1 [ch0]
  216. K. Okamoto, A. Saeki, T. Kozawa, Y. Yoshida, and S. Tagawa, “Subpicosecond Pulse Radiolysis Study of Geminate Ion Recombination in Liquid Benzene”,
    Chem. Lett. 32 (2003) 834-835.
    DOI: 10.1246/cl.2003.834
  217. A. Saeki, T. Kozawa, Y. Yoshida, and S. Tagawa, “Study on Radiation-Induced Reaction in Microscopic Region for Basic Understanding of Electron Beam Patterning in Lithographic Process (II) —Relation between Resist Space Resolution and Space Distribution of Ionic Species—“,
    Jpn. J. Appl. Phys. 41 (2002) 4213-4216.
    DOI: 10.1143/JJAP.41.4213
  218. T. Kozawa, A. Saeki, Y. Yoshida, and S. Tagawa, "Study on Radiation-Induced Reaction in Microscopic Region for Basic Understanding of Electron Beam Patterning in Lithographic Process (I) — Development of Subpicosecond Pulse Radiolysis and Relation between Space Resolution and Radiation-Induced Reactions of Onium Salt — ",
    Jpn. J. Appl. Phys. 41 (2002) 4208-4212.
    DOI: 10.1143/JJAP.41.4208
  219. A. Saeki, T. Kozawa, Y. Yoshida, and S. Tagawa, “Study on Geminate Ion Recombination in Liquid Dodecane using Pico- and Subpicosecond Pulse Radiolysis”,
    Radiat. Phys. Chem. 60 (2001) 319-322.
    DOI: 10.1016/S0969-806X(00)00369-8
  220. Y. Yoshida, Y. Mizutani, T. Kozawa, A. Saeki, S. Seki, S. Tagawa, and K. Ushida, “Development of Laser-Synchronized Picosecond Pulse Radiolysis System”,
    Radiat. Phys. Chem. 60 (2001) 313-318.
    DOI: 10.1016/S0969-806X(00)00368-6



  1. S. Seki, A. Saeki, T. Sakurai, and D. Sakamaki, “Charge carrier mobility in organic molecular materials probed by electromagnetic waves”
    Phys. Chem. Chem. Phys. 16 (2014) 11093-11113.
    DOI: 10.1039/c4cp00473f
  2. A. Saeki, Y. Koizumi, T. Aida, and S. Seki, “Comprehensive Approach to Intrinsic Charge Carrier Mobility in Conjugated Organic Molecules, Macromolecules, and Supramolecular Architectures”
    Acc. Chem. Res. 45 (2012) 1193-1202.
    DOI: 10.1021/ar200283b
  3. A. Saeki and S. Tagawa, “Nanometer-Scale Dynamics of Charges Generated by Radiations in Condensed Matter”,
    Pure Appl. Chem. 81 (2009) 45-60.
    DOI: 10.1351/PAC-CON-08-09-02

  1. 佐伯昭紀, “マイクロ波分光を駆使したエネルギー変換材料の探索”
    応用物理 86 (2017) 977-981.
    応用物理学会
  2. 佐伯昭紀, “有機薄膜太陽電池のデバイスレス評価”
    高分子, 66, (2017) 354-355
    高分子学会
  3. 佐伯昭紀, “高速スクリーニング法とデータ科学的統計手法によるペロブスカイト太陽電池材料の探索”
    ペトロテック, 40, (2017) 359-365.
  4. 佐伯昭紀, “周波数変調時間分解複素光電気伝導度法の開発とペロブスカイト太陽電池への応用”
    生産と技術, 68, (2016) 21-26.
    生産技術振興協会
  5. 佐伯昭紀, “ペロブスカイト太陽電池の電荷キャリア移動度と輸送過程”
    ファインケミカル, 44, (2015) 34-41.
  6. 佐伯昭紀, “デバイスレス光伝導度評価法による有機薄膜太陽電池材料の開発”
    生産と技術, 66, (2014) 92-95.
    生産技術振興協会
  7. 佐伯昭紀, “白色光パルス・マイクロ波伝導度法による有機薄膜太陽電池性能の直接評価”
    高分子論文集, 70, (2013) 370-385.
    J-Stage
  8. 佐伯昭紀, “自己組織化材料のミクロ・マクロ光電気物性評価”
    機能材料, 33, (2013) 12-19.
  9. 佐伯昭紀, 小泉美子, 関修平 “マイクロ波法による自己組織化材料中の局所的電荷輸送特性”
    化学工業, 62, (2011) 494-502.
  10. 関修平, 佐伯昭紀, 本庄義人 “マイクロ波空洞吸収法による有機固体結晶中の電荷輸送”
    化学工業, 60, (2009) 213-219.
  11. 関修平, 福松嵩博, 佐伯昭紀, “共役高分子骨格の電荷輸送特性”
    高分子論文集, 68, (2011) 53-61.
  12. 関修平,佐伯昭紀, “変調された電場による電極を用いない有機材料中の伝導度測定の原理と応用”
    有機合成化学協会誌 69 (2011) 38-44.
  13. 佐伯昭紀, 関修平, 田川精一, “マイクロ波による電極レス電荷キャリア移動度測定”
    放射線化学, 81 (2006) 29-39.



  1. A. Saeki and S. Seki, “Unveiling Charge Carrier Transport in π-Conjugated Molecular Wire on Micro and Macroscopic Scales”
    Chemical Science of π-Electron Systems, Springer (2015) Ch. 36, 605-620
    Editors: T. Akasaka, A. Osuka, S. Fukuzumi, H. Kandori, and Y. Aso).
    ISBN 978-4-431-55356-4 (Total 777 pages).
  2. S. Seki, T. Sakurai, M. Omichi, A. Saeki, and D. Sakamaki, “High-Energy Charged Particles: Their Chemistry and Use as Versatile Tools for Nanofabrication”
    Springer Briefs in Molecular Science, Springer (2015).
    ISBN 98-4-431-55683-1 (Total 74 pages).
  3. A. Saeki, S. Seki, K. Kobayashi, and S. Tagawa “Nanoscale Charge Dynamics and Nanostructure Formation in Polymers”,
    Charged Particle and Photon Interactions with Matter, -Recent Advances, Applications, and Interfaces CRS Press (2011) 671-710.
    Editors: Y. Hatano, Y. Katsumura, and A. Mozumder.
    ISBN 978-1-4398-1177-1. (Total 1064 pages)
  4. J. Belloni, R. A. Crowell, Y. Katsumura, M. Lin, J.-L. Marignier, M. Mostafavi, Y. Muroya, A. Saeki, S. Tagawa, Y. Yoshida, V. De Waele, and J. F. Wishart, “Ultrafast Pulse Radiolysis Methods” in Ch. 5,
    Recent Trends in Radiation Chemistry World Scientific Pub Co Inc (2010) 121-160. .
    Editors: J. F. Wishart and B. S. M. Rao.
    ISBN: 978-9814282079 (total 636 pages)
  5. Y. Yoshida, A. Saeki, T. Kozawa, J. Yang, and S. Tagawa, “Subpicosecond Pulse Radiolysis Study on Geminate Ion Recombination Process in n-Dodecane”,
    Ultrafast Phenomena, 14 (2005) 479-481.

  1. 佐伯昭紀 “有機無機ハイブリッド・ペロブスカイト太陽電池の光電気特性評価”
    元素ブロック材料の創出と応用展開, CMC出版(2016) 107-115, 中條善樹監修.
    ISBN 978-4-7813-1160-9 (Total 265 pages)
  2. 佐伯昭紀 “マイクロ波を用いたデバイスレス有機太陽電池評価法”
    太陽光と光電変換機能―異分野融合から生まれる次世代太陽電池―, CMC出版(2016) 96-103, 早瀬修二監修.
    ISBN 978-4-7813-1137-1 (Total 307 pages)
  3. 佐伯昭紀 “マイクロ波伝導度測定を用いた自己組織化半導体材料の評価”
    自己組織化マテリアルのフロンティア, フロンティア出版(2015) 96-103.
    ISBN 978-4-902410-26-6 (Total 336 pages)
  4. 松浦和則, 角五彰, 岸村顕広, 佐伯昭紀, 竹岡敬和, 内藤昌信, 中西尚志, 舟橋正浩, 矢貝史樹,
    有機機能材料‐基礎から応用まで(エキスパート応用化学テキスト)” 講談社 (2014).
    ISBN-10: 4061568027 (Total 256 pages)
    2014-OrgFunctMater-small.jpg
  5. 佐伯昭紀, 関修平 “ナノ~マイクロスケールでのπ分子ワイヤーの電荷輸送特性評価”,
    高次π空間の創発と機能開発, CMC出版(2013) 151-157.
    ISBN 978-4-7813-0758-9 (Total 245 pages)
  6. 佐伯昭紀, 関修平 “マイクロ波法によるデバイスレス有機薄膜太陽電池評価”,
    有機薄膜太陽電池の研究最前線, CMC出版(2012) 219-226.
    ISBN 978-4-7813-0600-1 (Total 257 pages)
  7. 関修平, 麻野敦資, 本庄義人, 佐伯昭紀 “有機デバイスの非接触迅速診断技術”,
    プリンテッドエレクトロニクス技術最前線, CMC出版 (2010) 72-78.
    ISBN 978-4-7813-0234-8 (Total 294 pages)
  8. 関修平, 佐伯昭紀 “マイクロ波による共役ポリマー分子鎖の1次元伝導特性の電極レス評価”,
    次世代共役ポリマーの超階層制御と革新機能, CMC出版(2009) 397-406.
    ISBN 978-4-7813-0073-3 (Total 445 pages)
  9. 関修平, 佐伯昭紀 “マイクロ波による共役分子の分子内電荷移動度の定量”
    有機薄膜太陽電池の最新技術II, CMC出版 (2009) 38-57.
    ISBN 978-4-7813-0075-7 (Total 316 pages)
  10. 佐伯昭紀, “ジェミネート再結合とオンサガー理論”,
    放射線化学のすすめ, 日本放射線化学会編, 学会出版センター (2006) 256-258.
    ISBN4-7622-3050-2. (Total 268 pages)


Adv.-Mater.-29(23)-(2017)-backcover.pngAdv. Mater. 29(23), (2017) Backcover
Upon cooling and heating, organic–inorganic perovskite nanoparticles are reversibly decomposed and formed through the lower-critical-solution-temperature phenomenon. Akinori Saeki and co-workers demonstrate an aurora-like photoemissive object in article number 1700047, and reveal the roles of the involved chemicals (methylammonium cation, lead, halogen, and molecular additives). The cloud temperature is varied from ca. 30 to 80 °C by controlling the concentration, and multi-luminescent-color thermoresponsive solutions are achieved through compositional engineering of the halogen.


Polym.-Chem.-6(32)-(2015)-backcover.jpgPolym. Chem. 6(32), (2015) Backcover
Non-contact electric conductivity measurement technique reveals the correlation between the charge carrier mobility and backbone conformation of polythiophene isolated or aggregated in insulating polymer matrices. Styrene-perylenediimide (PDI) copolymer systems provides versatile platforms to investigate 1-dimensional charge carrier mobility along the conjugated backbones of a variety of p-type polymers.


J.-Mater.-Chem.-C-3(11)-(2015)-backcover.jpgJ. Mater. Chem. C 3(11), (2015) Backcover.
A series of novel phthalocyanine (Pc)-tethered block copolymers, Pc-poly(methyl methacrylate)-block-polystyrene (Pc-PMMA-b-PS), with various molecular weights (number average molecular weight mass = 41, 66, 86 kg mol−1), were prepared by atom transfer radical polymerization and click chemistry. The structurally related Pc-tethered homopolymer, Pc-PMMA was also synthesized for comparison. Pc-PMMA forms homogeneous polymer films containing π-assemblies of the terminal Pc groups, whereas Pc-PMMA-b-PS self-assembles into a cylindrical morphology in which the Pc units show π–π interactions inside the confined PMMA cylinders. Such polymer designs have potential applications in optoelectronic devices.


Adv.-Funct.-Mater.-24(1)-(2014)-Frontispiece.jpgAdv.Funct.Mater.24(1), (2014) Frontispiece.
Towards a highly efficient organic photovoltaic, new donoracceptor-type copolymers are proposed by S. Seki and co-workers. The copolymers comprise benzobisthiazole as a weak donor rather than an acceptor. The molecular design and device tuning of BBTz-based copolymers coupled with thienopyrroledione and benzothiadiazole are reported on page 28, by means of a device-less evaluation of laser and Xe-flash time-resolved microwave conductivity.


Polym.-Chem.-5(11)-(2014)-backcover.jpgPolym. Chem. 5(11) (2014) backcover
π-Conjugated alternating copolymers containing a tetramethylbithiophene unit show a strong tendency to form well-defined, sub- to several-micrometer-sized spheres. The twisted bithiophene unit inhibits interchain stacking and anisotropic crystal growth of these copolymers, leading to the formation of structurally isotropic spheres by means of a slow diffusion of a nonsolvent into a solution of the copolymers. These micrometer-sized spheres display extremely long photocarrier lifetimes ([similar]10−3 s) in comparison with cast films from the solutions of the polymers and those of the irregular aggregates (<10−6 s).


Polym.-Chem.-4(3)-(2013)-backcover.jpgPolym. Chem.4(3) (2013) backcover
We synthesized a series of new low-band gap donor–acceptor copolymers containing 4,4′-bis(alkyl)-[6,6′-bithieno[3,2-b]pyrrolylidene]-5,5′(4H,4′H)-dione. This acceptor unit, so-called dithienoketopyrrole (DTKP), is an analogue of isoindigo, the phenyl rings of which are replaced by thiophenes. Donor moieties such as benzodithiophene, cyclopentadithiophene, fluorene, and dithienothiophene are polymerized with DTKP in an alternating fashion by Stille or Suzuki–Miyaura coupling methods. Exceedingly low-band gaps (Eg = 1.0–1.6 eV) were achieved in these copolymers through internal charge transfer interactions between the donor and acceptor moieties. The structural, photophysical, and electrochemical properties of the resultant copolymers were characterized, and field-effect transistor (FET) mobilities were measured.


Adv. Energy Mater. 1(4) (2001) cover.gifAdv. Energy Mater. 1(4) (2011) cover
Akinori Saeki and coworkers investigate the correlation between organic photovoltaic cells and dynamics of transient photoconductivity by flash-photolysis time-resolved microwave conductivity. Blend ratios, annealing, impurities, and degradation effects in bulk heterojunction films consisting of P3HT and PCBM are examined, demonstrating a facile screening method to survey the potential of optoelectronic materials.


Adv.-Mater.-22(7)-(2010)-cover.gifAdv. Mater. 22(7) (2010) cover
The cover illustrates self-assembly of a hexa-peri-hexabenzocoronene amphiphile to give a graphitic nanotube, formed through helical rolling-up of a bilayer tape consisting of bilaterally coupled columns of π-stacked hexabenzocoronene units. The graphitic layer inside the wall offers a charge-transport pathway. Aida and co-workers report on p. 1297 on the fabrication of a macroscopic fiber by “fishing” the nanotubes with a glass hook. In the fiber, most of the nanotubes are oriented unidirectionally along the fiber axis, thereby allowing an anisotropic electrical conduction upon doping with iodine.


J. Am. Chem. Soc. 131(49)-(2009).jpgJ. Am. Chem. Soc. 131(49)(2009) cover
Triphenylene derivatives bearing appropriate paraffinic side chains with imidazolium ion-based ionic liquid pendants form, over a wide temperature range, a bicontinuous cubic liquid crystalline mesophase consisting of columnar arrays of π-stacked triphenylene units. Upon excitation with a laser flash, these liquid crystals show excellent carrier mobility and have the potential for novel charge transport materials.


Chem.-Eur.-J.-14(14)-(2008)-cover.gifChem.-Eur.J. 14(14) (2008)cover
A face-to-face π-stacked one-dimensional (1D) assembly of π-conjugated discotic molecules is a promising superstructure for organic semiconductor materials. In their article, I. Hisaki, M. Miyata et al. on page 4178. describe the construction and the optical and electrical properties of a π-stacked 1D assembly composed of a dehydrobenzo[12]annulene derivative in the crystalline state. Compared with the herringbone-like assembly of the parent annulene, the 1D assembly revealed significantly-anisotropic charge mobility along the columnar axis.


Adv.-Mater.-20(5)-(2008)-inside-cover.gifAdv. Mater. 20(5) (2008) inside-cover
Electrodeless photoconductivity measurements of a rubrene single crystal are performed by microwave conductivity and transient optical spectroscopy, demonstrating anisotropy and ambipolarity. From these comprehensive studies, Akinori Saeki, Seiichi Tagawa, and co-workers discuss on p. 920 the optoelectronic properties of rubrene single crystal in terms of charge recombination of holes and electrons, exciton–exciton annihilation, quantum efficiency of charge carrier generation, triplet contribution, and the extinction coefficients of ionic species accessed by pulse radiolysis.


Adv.-Mater.-18(10)-(2006)-cover.gifAdv. Mater. 18(10) (2006) cover
The cover illustrates self-assembly of a hexa-peri-hexabenzocoronene amphiphile to give a graphitic nanotube, formed through helical rolling-up of a bilayer tape consisting of bilaterally coupled columns of π-stacked hexabenzocoronene units. The graphitic layer inside the wall offers a charge-transport pathway. Aida and co-workers report on p. 1297 on the fabrication of a macroscopic fiber by “fishing” the nanotubes with a glass hook. In the fiber, most of the nanotubes are oriented unidirectionally along the fiber axis, thereby allowing an anisotropic electrical conduction upon doping with iodine.