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  1. Selenium-substituted β-methylthiobenzo[1,2-b:4,5-b']dithiophenes: synthesis, packing structure, and transport properties, H. Takenaka, T. Ogaki, C. Wang, K. Kawabata, K. Takimiya, Chem. Mater., 31, 6696-6705 (2019).
  2. Two isomeric perylenothiophene diimides: physicochemical properties and applications in organic semiconducting devices, M. Nakano, K. Nakano, K. Takimiya, K. Tajima, J. Mater. Chem. C, 7, 2267-2275 (2019).
  3. Synthesis of Thiophene-annulated Naphthalene Diimide-based Small-Molecular Acceptors via Two-step C-H Activation, Rukiya Matsidik, K. Takimiya, Chem. Asina J., 14, 1651-1656 (2019).


  1. Thienoquinoidal System: Promising Molecular Architecture for Optoelectronic Applications, K. Takimiya, K. Kawabata, J. Synth. Org. Chem., Jpn., 76 , 1176-1184 (2018).
  2. Thiacycle-fused benzo[1,2-b:4,5-b']dithiophenes (BDTs): synthesis, packing, molecular orientation and semiconducting properties, C. Wang, H. Nakamura, H. Sugino, K. Takimiya,J. Mater. Chem. C, 6 , 3604-3612 (2018).
  3. Thiophene-Fused Naphthalene Diimides: New Building Blocks for Electron Deficient pi-Functional Materials, K. Takimiya, M. Nakano, Bull. Chem. Soc. Jpn., 91, 121-140 (2018).


  1. Bis(naphthothiophene diimide)indacenodithiophenes as Acceptors for Organic Photovoltaics, J. Hamonnet, M. Nakano, K. Nakano, H. Sugino, K. Takimiya, K. Tajima,Chem. Mater., 29, 9618-9622 (2017).
  2. Methylthionated benzo[1,2-b:4,5-b']dithiophenes: a model study to control packing structures and molecular orientation in thienoacene-based organic semiconductors, C. Wang, H. Nakamura, H. Sugino, K. Takimiya, Chem. Commun.,53, 9594-9597 (2017).
  3. Control of major carriers in ambipolar polymer semiconductor by self-assembled monolayers, M. Nakano, I. Osaka, K. Takimiya, Adv. Mater., 29, 1602893 (2017).
  4. Effects of branching position of alkyl side chains on ordering structure and charge transport property in thienothiophenedione- and quinacridone-based semiconducting polymers, K. Kawabata, M. Saito, N. Takemura, I. Osaka, K. Takimiya, Polymer J., 49, 169-176 (2017).
  5. Effects of Selenium Atoms on [1]Benzochalcogenopheno[3,2-b][1]benzochalcogenophene-based Organic Semiconductors, H. Sugino, K. Takimiya, Chem. Lett., 46, 345-347 (2017).
    This paper is dedicated to the memory of Professor Yoshihito Kunugi.
  6. Naphthodithiophenediimide-Benzobisthiadiazole-Based Polymers: Versatile n-Type Materials for Field-Effect Transistors and Thermoelectric Devices, Y. Wang, M. Nakano, T. Michinobu, Y. Kiyota, T. Mori, K. Takimiya, Macromolecules, 50, 857-864 (2017).
  7. Dithienyl Acenedithiophenediones as New pi-Extended Quinoidal Cores: Synthesis and Properties, K. Kawabata, I. Osaka, M. Sawamoto, J. L. Zafra, P. Mayorga Burrezo, J. Casado, K. Takimiya, Chem. Eur. J., 23, 4579-4589 (2017).
    This paper is selected for inside cover.
  8. Selective thionation of naphtho[2,3-b]thiophene diimide: Tuning of the optoelectronic properties and packing structure, W. Chen, M. Nakano, K. Takimiya, Q. Zhang, Org. Chem. Front., 4, 704-710 (2017).
  9. High-performance solution-processed organic thin-film transistors based on a soluble DNTT derivative, M. Sawamoto, H. Sugino, M. Nakano, K. Takimiya, Org. Electron., 46, 68-76 (2017).
  10. 2016

    1. Naphthodithiophene Diimide-Based Copolymers: Ambipolar Semiconductors in Field-Effect Transistors and Electron Acceptors with Near-Infrared Response in Polymer Blend Solar Cells, K. Nakano, M. Nakano, B. Xiao, E. Zhou, K. Suzuki, I. Osaka, K. Takimiya, K. Tajima Macromolecules, 49, 1752-1760 (2016).
    2. This is a collaboration work with Dr. Tajima's group.
    3. Soluble Dinaphtho[2,3-b:2',3'-f]thieno[3,2-b]thiophene Derivatives for Solution-Processed Organic Field-Effect Transistors, M. Sawamoto, M. J. Kang, E. Miyazaki, H. Sugino, I. Osaka, K. Takimiya, ACS Appl. Mater. Interfaces, 8, 3810-3824 (2016).
    4. Amide-bridged terphenyl and dithienylbenzene units for semiconducting polymers, M. Akita, M. Saito, I. Osaka, T. Koganezawa, K. Takimiya, RSC Adv., 6, 16437-16447 (2016).
    5. Very Small Bandgap π-Conjugated Polymers with Extended Thienoquinoids, K. Kawabata, M. Saito, I. Osaka, K. Takimiya, J. Am. Chem. Soc., 138, 7725-7732 (2016).
    6. Dithienylthienothiophenebisimide, a Versatile Electron-Deficient Unit for Semiconducting Polymers, M. Saito, M. Suda, H. Yoshida, I. Osaka, K. Takimiya, Adv. Mater., 28 , 6921-6925 (2016).
    7. N,N'-Unsubstituted Naphthodithiophene Diimide (NDTI): Synthesis and Derivatization via N-Alkylation and -Arylation, M. Nakano, M. Sawamoto, M. Yuki, K. Takimiya, Org. Lett., 18, 3770-3773 (2016).
    8. N,N'-Bis(2-cyclohexylethyl)naphtho[2,3-b:6,7-b']dithiophene diimides: Effects of Substituents, M. Nakano, D. Hashizume, K. Takimiya, Molecules, 21, 981 (2016).
    9. Implication of Fluorine Atom on Electronic Properties, Ordering Structures, and Photovoltaic Performance in Naphthobisthiadiazole-Based Semiconducting Polymers, K. Kawashima, T. Fukuhara, Y. Suda, Y. Suzuki, T. Koganezawa, H. Yoshida, H. Ohkita, I. Osaka, K. Takimiya, J. Am. Chem. Soc., 138, 10265-10275 (2016).
    10. Naphtho[2,3-b]thiophene Diimide (NTI): a Mono-Functionalizable Core-Extended Naphthalene Diimide Building Block for Electron-Deficient Architectures, W. Chen, M. Nakano, J.-H. Kim, K. Takimiya, Q. Zhang, J. Mater. Chem. C., 4, 8879-8883 (2016).
    11. Reversible Dimerization & Polymerization of a Janus Diradical Producing Labile CC Bonds and Giant Chromism, J. L. Zafra, L. Qiu, N. Yanai, T. Mori, M. Nakano, M. P. Alvarez, J. T. Lopez Navarrete, C. J. Gomez-Garcia, M. Kertesz, K. Takimiya, J. Casado, Angew. Chem. Int. Ed., 55, 14563-14568 (2016).
    12. 2015