• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

2018 Fiscal Year Annual Research Report

Design Strategy fot the Electronic Functional p-Bricolage Molecular Systems by Combined Microwave Spectroscopy Techniques

Planned Research

Project Areapi-System Figuration: Control of Electron and Structural Dynamism for Innovative Functions
Project/Area Number 26102011
Research InstitutionKyoto University

Principal Investigator

関 修平  京都大学, 工学研究科, 教授 (30273709)

Co-Investigator(Kenkyū-buntansha) 櫻井 庸明  京都大学, 工学研究科, 助教 (50632907)
Project Period (FY) 2014-07-10 – 2019-03-31
Keywordsマイクロ波 / 伝導度 / 移動度 / スピン / TRMC / ESR / 過渡吸収 / 共役高分子
Outline of Annual Research Achievements

物質中の電荷担体の多くがスピンを有していることに着目し、そのスピン・電子状態と輸送特性を包括的かつ決定的な測定手法として、TRMC- ESR-Transient Absorption(TA) 3元分光複合分光システムを構築した。
poly(3-hexylthiophene)を測定対象とし、この中で伝導を担う正電荷種:polaron (P), polaron pair (PP), bipolaron (BP)、分子鎖間π-dimerの種のうち、なにが最も電子伝導に寄与する種であるか、それぞれのスピン状態と電子吸収スペクトルの違いから定量的に弁別して明らかにすることを目的として研究を進めた。基底状態吸収の顕著な漂白現象をPによるものとし、これを指標としてDopingの進行に伴って、Pの増加と飽和、ついで減少を定量化した。この間に試料に注入されたスピン数をESRスペクトルから定量評価し、Dopingの進行とともに急激に増大・飽和を経て減少に転じることを認めた。EPRスペクトル解析では、注入電荷の増大に伴い、スピン間緩和時間の短縮と、正味のスピン数が減少する反強磁性PPへの変化を確認した。伝導度測定では、Dopingの進行に伴って鋭敏に応答し、周波数変化が小さいことから、P-PPへの転移、ならびにDopantのP3HT内拡散による実誘電率変化は無視できることを明らかとした。実際に見積もられた伝導度はその急激な上昇のスピン注入に対する遅延とスピン密度の減少曲線への対応から、Doping初期の段階で観測されるPはほとんど伝導に寄与しないが、反強磁性的に相互作用したPPを形成して初めて大きく伝導に寄与することを明らかとした。
構築されたCD-TRMC法は、物質中のキャリアの輸送特性とスピン状態を同時に明らかにできる世界的にも唯一の計測システムであることを実証した。

Research Progress Status

平成30年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

平成30年度が最終年度であるため、記入しない。

  • Research Products

    (47 results)

All 2019 2018 Other

All Int'l Joint Research (6 results) Journal Article (35 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 35 results,  Open Access: 18 results) Presentation (5 results) (of which Int'l Joint Research: 4 results,  Invited: 5 results) Funded Workshop (1 results)

  • [Int'l Joint Research] Imperial College London/University of Cambridge(英国)

    • Country Name
      UNITED KINGDOM
    • Counterpart Institution
      Imperial College London/University of Cambridge
  • [Int'l Joint Research] Universite Libre de Bruxelles(ベルギー)

    • Country Name
      BELGIUM
    • Counterpart Institution
      Universite Libre de Bruxelles
  • [Int'l Joint Research] Universidad Complutense de Madrid(スペイン)

    • Country Name
      SPAIN
    • Counterpart Institution
      Universidad Complutense de Madrid
  • [Int'l Joint Research] IACS(インド)

    • Country Name
      INDIA
    • Counterpart Institution
      IACS
  • [Int'l Joint Research] Stanford University(米国)

    • Country Name
      U.S.A.
    • Counterpart Institution
      Stanford University
  • [Int'l Joint Research]

    • # of Other Countries
      8
  • [Journal Article] Impact of the position of the imine linker on the optoelectronic performance of マ?-conjugated organic frameworks2019

    • Author(s)
      S. Ghosh, Y. Tsutsui, K. Suzuki, H. Kaji, K. Honjo, T. Uemura, and S. Seki
    • Journal Title

      Mol. Syst. Des. Eng.

      Volume: 4(2) Pages: 325窶?331

    • DOI

      DOI: 10.1039/C8ME00079D

    • Peer Reviewed / Open Access
  • [Journal Article] Charge Carrier Polarity Modulation in Diketopyrrolopyrrole-Based Low Band Gap Semiconductors by Terminal Functionalization2019

    • Author(s)
      S. Ghosh, R. Raveendran, A. Saeki, S. Seki, M. Namboothiry, and A. Ajayaghosh
    • Journal Title

      ACS Appl. Mater. Interfaces

      Volume: 11(1) Pages: 1088窶?1095

    • DOI

      DOI: 10.1021/acsami.8b16714

    • Peer Reviewed / Open Access
  • [Journal Article] Formation of Cyclophane Macrocycles in Carbazole-Based Biradicaloids: Impact of the Dicyanomethylene Substitution Position2019

    • Author(s)
      I. Badテュa-Domテュnguez, A. Perez-Guardiola, J. C. Sancho-Garcテュa, J. T. L. Navarrete, V. H. Jolテュn, H. Li, D. Sakamaki, S. Seki, and M. C. R. Delgado
    • Journal Title

      ACS Omega

      Volume: 4(3) Pages: 4761窶?4769

    • DOI

      DOI: 10.1021/acsomega.8b03418

    • Peer Reviewed / Open Access
  • [Journal Article] Observation of Dissociative Quasi-Free Electron Attachment to Nucleoside via Excited Anion Radical in Solution2019

    • Author(s)
      J. Ma, A. Kumar, Y. Muroya, S. Yamashita, T. Sakurai, S. A. Denisov, M. D. Sevilla, A. Adhikary, S. Seki, and M. Mostafavi
    • Journal Title

      Nature Commun.

      Volume: 10 Pages: 102

    • DOI

      DOI: 10.1021/acsomega.8b01943

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Highly Fluorescent Liquid Crystals from Excited-State Intramolecular Proton Transfer Molecules2019

    • Author(s)
      W. Zhang, T. Sakurai, M. Aotani, G. Watanabe, H. Yoshida, V. S. Padalkar, Y. Tsutsui, D. Sakamaki, M. Ozaki, and S. Seki
    • Journal Title

      Adv. Opt. Mater.

      Volume: 7(2) Pages: 1801349

    • DOI

      DOI: 10.1002/adom.2018013491

    • Peer Reviewed / Open Access
  • [Journal Article] Preparation, Electronic and Liquid Crystalline Properties of Electron-Accepting Azaacene Derivatives2018

    • Author(s)
      T. Takeda, T. Ikemoto, S. Yamamoto, W. Matsuda, S. Seki, M. Mitsuishi, and T. Akutagawa
    • Journal Title

      ACS Omega

      Volume: 3(10) Pages: 13694-13703

    • DOI

      DOI: 10.1021/acsomega.8b01943

    • Peer Reviewed
  • [Journal Article] Selective Formation of End-on Orientation between Polythiophene and Fullerene Mediated by Coordination Nanospaces2018

    • Author(s)
      T. Kitao, Y. Sasaki, S. Kitagawa, Y. Imamura, M. Tsujimoto, S. Seki, and T. Uemura
    • Journal Title

      J. Phys. Chem. C

      Volume: 122(42) Pages: 24182-24189

    • DOI

      DOI: 10.1021/acs.jpcc.8b08120

    • Peer Reviewed
  • [Journal Article] Ultrafast Electron Attachment and Hole Transfer Following Ionizing Radiation of Aqueous Uridine Monophosphate2018

    • Author(s)
      J. Ma, S. A. Denisov, J. L. Marignier, P. Pernot, A. Adhikary, S. Seki, and M. Mostafavi
    • Journal Title

      J. Phys. Chem. Lett.

      Volume: 9(17) Pages: 5105-5109

    • DOI

      DOI: 10.1021/acs.jpclett.8b02170

    • Peer Reviewed / Open Access
  • [Journal Article] Conjugated Nanowire Sensors via High-Energy Single-Particle-Induced Linear Polymerization of 9,9'-Spirobi[9H-Fluorene] Derivatives2018

    • Author(s)
      S. Sakaguchi, T. Sakurai, J. Ma, M. Sugimoto, T. Yamaki, A. Chiba, Y. Saito, and S. Seki
    • Journal Title

      J. Phys. Chem. B

      Volume: 122(36) Pages: 8614-8623

    • DOI

      DOI: 10.1021/acs.jpcb.8b06310

    • Peer Reviewed
  • [Journal Article] Landscape of Charge Carrier Transport in Doped Poly(3-hexylthiophene): Noncontact Approach Using Ternary Combined Dielectric, Paramagnetic, and Optical Spectroscopies2018

    • Author(s)
      Y. Tsutsui, H. Okamoto, D. Sakamaki, K. Sugiyasu, M. Takeuchi, and S. Seki
    • Journal Title

      J. Phys. Chem. Lett.

      Volume: 9(13) Pages: 3639-3645

    • DOI

      DOI: 10.1021/acs.jpclett.8b01465

    • Peer Reviewed
  • [Journal Article] High pressure synthesis of hydride-fluoride pyrochlore NaCaMg2F7-xHx2018

    • Author(s)
      K. Arai, Y. Kobayashi, Y. Tang, Y. Tsutsui, D. Sakamaki, T. Yamamoto, K. Fujii, M. Yashima, S. Seki, and H. Kageyama
    • Journal Title

      Chem. Lett.

      Volume: 47(7) Pages: 829-832

    • DOI

      DOI: 10.1246/cl.180256

    • Peer Reviewed
  • [Journal Article] Electron delocalization and charge mobility as a function of reduction in a metal窶登rganic framework2018

    • Author(s)
      M. L. Aubrey, B. M. Wiers, S. C. Andrews, T. Sakurai, S. E. Reyes-Lillo, S. M. Hamed, C.-J. Yu, L. E. Darago, J. A. Mason, J.-O. Baeg, F. Grandjean, G. J. Long, S. Seki, J. B. Neaton, P. Yang, and J. R. Long
    • Journal Title

      Nature Mater.

      Volume: 17(7) Pages: 625-632

    • DOI

      DOI: 10.1038/s41563-018-0098-1

    • Peer Reviewed / Open Access
  • [Journal Article] Relaxation of Plasma Carriers in Graphene: An Approach by Frequency-Dependent Optical Conductivity Measurement2018

    • Author(s)
      W. Choi, H. Nishiyama, Y. Ogawa, Y. Ueno, K. Furukawa, T. Takeuchi, Y. Tsutsui, T. Sakurai, and S. Seki
    • Journal Title

      Adv. Opt. Mater

      Volume: 6(14) Pages: 1701402

    • DOI

      DOI: 10.1002/adom.201701402

    • Peer Reviewed
  • [Journal Article] Naphthalenediimide (NDI)窶燭onjugated Polyurethanes: Impact of Chromophoric Location on Hierarchical Supramolecular Assembly and Conductivity2018

    • Author(s)
      A. Mukherjee, T. Sakurai, S. Seki, and S. Ghosh
    • Journal Title

      ChemNanoMat

      Volume: 4(8) Pages: 860-866

    • DOI

      DOI: 10.1002/cnma.201800220

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A Hybrid Organogel of a Low Band Gap Diketopyrrolopyrrole with PC71BM: Phase Separated Morphology and Enhanced Photoconductivity2018

    • Author(s)
      S. Ghosh, S. Das, A. Saeki, V. K. Praveen, S. Seki, and A. Ajayaghosh
    • Journal Title

      ChemNanoMat

      Volume: 4(8) Pages: 831-836

    • DOI

      DOI: 10.1002/cnma.201800149

    • Peer Reviewed / Open Access
  • [Journal Article] Comparison of Radical Generation Efficiencies of the Oxime-Based Initiator Radicals Using Galvinoxyl Radical as an Indicator2018

    • Author(s)
      A. Tsuneishi, D. Sakamaki, Q. Gao, T. Shoda, T. Kozawa, and S. Seki
    • Journal Title

      Jpn. J. Appl. Phys

      Volume: 57(8) Pages: 86504

    • DOI

      DOI: 10.7567/JJAP.57.086504

    • Peer Reviewed
  • [Journal Article] Hash-Mark-Shaped Azaacene Tetramers with Axial Chirality2018

    • Author(s)
      Y. Inoue, D. Sakamaki, Y. Tsutsui, M. Gon, Y. Chujo, and S. Seki
    • Journal Title

      J. Am. Chem. Soc.

      Volume: 140(23) Pages: 7152-7158

    • DOI

      DOI: 10.1021/jacs.8b02689

    • Peer Reviewed
  • [Journal Article] Catalytic CO Oxidation of Palladium Nanoparticles Formed by One-Step Synthesis on Polycarbosilane Nanowires2018

    • Author(s)
      S. Tsukuda, A. Idesaki, M. Sugimoto, S. Seki, and T. Omata
    • Journal Title

      Mater. Res. Express

      Volume: 5(8) Pages: 85003

    • DOI

      DOI: 10.1088/2053-1591/aad122

    • Peer Reviewed
  • [Journal Article] Transient Optical窶溺icrowave Spectroscopy for Electron Mobility Assessment in Solids and Gels: A Comprehensive Approach2018

    • Author(s)
      W. Matsuda, T. Sakurai, G. Ghosh, S. Ghosh, and S. Seki
    • Journal Title

      J. Photopolym. Sci. Technol.

      Volume: 31 Pages: 91-99

    • DOI

      DOI: 10.2494/photopolymer.31.91

    • Peer Reviewed / Open Access
  • [Journal Article] A phase transformable ultrastable titanium-carboxylate framework for photoconduction2018

    • Author(s)
      S. Wang, T. Kitao, N. Guillou, M. Wahiduzzaman, C. Martineau-Corcos, F. Nouar, A. Tissot, L. Binet, N. Ramsahye, S. Devautour-Vinot, S. Kitagawa, S. Seki, Y. Tsutsui, V. Briois, N. Steunou, G. Maurin, T. Uemura, and C. Serre
    • Journal Title

      Nature Commun.

      Volume: 9 Pages: 660

    • DOI

      DOI: 10.1038/s41467-018-04034-w

    • Peer Reviewed / Open Access
  • [Journal Article] Catalytic and conductivity studies in two dimensional coordination polymers built with a thiazole based ligand2018

    • Author(s)
      P. Kumar, S. Lymperopoulou, E. Loukopoulos, W. Matsuda, N. Kourkoumelis, S. Seki, and G. E. Kostakis
    • Journal Title

      Polyhedron

      Volume: 150 Pages: 21-27

    • DOI

      DOI: 10.1016/j.poly.2018.04.040

    • Peer Reviewed / Open Access
  • [Journal Article] Peripherally Cyanated Subphthalocyanines as Potential n窶慎ype Organic Semiconductors2018

    • Author(s)
      G. Zango, T. Sakurai, B. Urones, H. Saeki, W. Matsuda, M. V. Martテュnez-Dテュaz, S. Seki, and T. Torres
    • Journal Title

      Chem. Eur. J.

      Volume: 24(33) Pages: 8331-8342

    • DOI

      DOI: 10.1002/chem.201801190

    • Peer Reviewed / Open Access
  • [Journal Article] The reductive aromatization of naphthalene diimide: A versatile platform for 2,7-diazapyrenes2018

    • Author(s)
      T. Nakazato, T. Kamatsuka, J. Inoue, T. Sakurai, S. Seki, H. Shinokubo, and Y. Miyake
    • Journal Title

      Chem. Commun.

      Volume: 54(41) Pages: 5117-5180

    • DOI

      DOI: 10.1039/C8CC01937A

    • Peer Reviewed
  • [Journal Article] Paramagnetism enhancement by in situ electrochemical hole doping into a Prussian Blue thin film2018

    • Author(s)
      M. Noguchi, M. Nakano, S. Kang, O. Sato, and S. Seki
    • Journal Title

      Mater. Chem. Front.

      Volume: 2(5) Pages: 1004-1008

    • DOI

      DOI: 10.1039/C7QM00615B

    • Peer Reviewed
  • [Journal Article] Durian-Shaped CdS@ZnSe Core@mesporous-Shell Nanocrystals for Enhanced and Sustainable Photocatalytic Hydrogen Evolution2018

    • Author(s)
      Z. Lian, M. Sakamoto, Y. Kobayashi, N. Tamai, J. Ma, T. Sakurai, S. Seki, T. Nakagawa, M. Lai, M. Haruta, H. Kurata, and T. Teranishi
    • Journal Title

      J. Phys. Chem. Lett.

      Volume: 9(9) Pages: 2212窶?2217

    • DOI

      DOI: 10.1021/acs.jpclett.8b00789

    • Peer Reviewed / Open Access
  • [Journal Article] Fullerene/cobalt porphyrin charge-transfer cocrystals: Excellent thermal stability and high mobility2018

    • Author(s)
      S. Zheng, J. Zhong, W. Matsuda, P. Jin, M. Chen, T. Akasaka, K. Tsukagoshi, S. Seki, J. Zhou, and X. Lu
    • Journal Title

      Nano Res.

      Volume: 11(4) Pages: 1917窶?1927

    • DOI

      DOI: 10.1007/s12274-017-1809-7

    • Peer Reviewed / Open Access
  • [Journal Article] Electron-Transporting Foldable Alternating Copolymers of Perylenediimide and Flexible Macromolecular Chains2018

    • Author(s)
      T. Sakurai, N. Orito, S. Nagano, K. Kato, M. Takata, and S. Seki
    • Journal Title

      Mater. Chem. Front.

      Volume: 2(4) Pages: 718窶?729

    • DOI

      DOI: 10.1039/C7QM00616K

    • Peer Reviewed
  • [Journal Article] Synthesis and properties of a twin donor molecule composed of cofacially stacked dihydrodiazapentacenes2018

    • Author(s)
      D. Sakamaki, H. Saeki, and S. Seki
    • Journal Title

      Mater. Chem. Front.

      Volume: 2(4) Pages: 530窶?536

    • DOI

      DOI: 10.1039/C7QM00563F

    • Peer Reviewed
  • [Journal Article] Fabrication of Au nanoparticles on poly(vinylpyrrolidone) nanowires exhibiting reversible frequency change of localized surface plasmon resonance2018

    • Author(s)
      S. Tsukuda, S. Seki, M. Omichi, M. Sugimoto, A. Idesaki, T. Sekino, and T. Omata
    • Journal Title

      AIP Adv.

      Volume: 8(1) Pages: 15314

    • DOI

      DOI: 10.1063/1.5001553

    • Peer Reviewed
  • [Journal Article] Solvent Switchable Nanostructures and Function of a マ?-Amphiphile2018

    • Author(s)
      A. Sikder, J. Sarkar, T. Sakurai, S. Seki, and S. Ghosh
    • Journal Title

      Nanoscale

      Volume: 10(7) Pages: 3272窶?3280

    • DOI

      DOI: 10.1039/C7NR07989C

    • Peer Reviewed / Open Access
  • [Journal Article] Supramolecular assemblies of a nitrogen-embedded buckybowl dimer with C602018

    • Author(s)
      H. Yokoi, S. Hiroto, D. Sakamaki, S. Seki, and H. Shinokubo
    • Journal Title

      Chem. Sci.

      Volume: 9(4) Pages: 819-824

    • DOI

      DOI: 10.1039/C7SC04453D

    • Peer Reviewed
  • [Journal Article] Unique cohesive nature of the ホイ1-isomer of [70]PCBM fullerene on structures and photovoltaic performances of bulk heterojunction films with PffBT4T-2OD polymers2018

    • Author(s)
      T. Umeyama, K. Igarashi, D. Sakamaki, S. Seki, and H. Imahori
    • Journal Title

      Chem. Commun.

      Volume: 54(4) Pages: 405窶?408

    • DOI

      DOI: 10.1039/C7CC08947C

    • Peer Reviewed
  • [Journal Article] Supramolecular Chirality Issues in Unorthodox Naphthalene Diimide Gelators2018

    • Author(s)
      G. Ghosh, M. Pal, T. Sakurai, W. Matsuda, P. Dastidar, S. Seki, and S. Ghosh
    • Journal Title

      Chem. Eur. J.

      Volume: 24(8) Pages: 1938-1946

    • DOI

      DOI: 10.1002/chem.201704825

    • Peer Reviewed / Open Access
  • [Journal Article] Toward Bioelectronic Materials: Photoconductivity in Protein窶撤orphyrin Hybrids Wrapped around SWCNT2018

    • Author(s)
      J. Lテウpez-Andarias, S. H. Mejテュas, T. Sakurai, W. Matsuda, S. Seki, F. Feixas, S. Osuna, C. Atienza, N. Martテュn, and A. L. Cortajarena
    • Journal Title

      Adv. Funct. Mater.

      Volume: 28(24) Pages: 1704031

    • DOI

      DOI: 10.1002/adfm.201704031

    • Peer Reviewed / Open Access
  • [Journal Article] Formation and Photodynamic Behavior of Transition Metal Dichalcogenide Nanosheet窶擢ullerene Inorganic/Organic Nanohybrids on Semiconducting Electrodes2018

    • Author(s)
      J. Baek, T. Umeyama, W. Choi, Y. Tsutsui, H. Yamada, S. Seki, and H. Imahori
    • Journal Title

      Chem. Eur. J.

      Volume: 24(7) Pages: 1561-1572

    • DOI

      DOI: 10.1002/chem.201703699

    • Peer Reviewed
  • [Presentation] Carbon-Based Electronic Materials and Interfaces: Non-Contact Approach2018

    • Author(s)
      Shu Seki
    • Organizer
      2nd From Carbon-Rich Molecules to Carbon-Based Materials Conference
    • Int'l Joint Research / Invited
  • [Presentation] Combined Spectroscopy Technique of Electromagnetic Waves for Electric Conductivity of Molecular Materials2018

    • Author(s)
      Shu Seki
    • Organizer
      Materials PLUS 2018
    • Int'l Joint Research / Invited
  • [Presentation] Organic Functional Nanomaterials by Single Particle Triggered Linear Polymerization2018

    • Author(s)
      Shu Seki
    • Organizer
      The 3rd Materials Chemistry Frontiers International Symposium
    • Int'l Joint Research / Invited
  • [Presentation] Combined Electromagnetic Waves Spectroscopy: A Versatile Tool for Electronic Transport in Molecular Materials2018

    • Author(s)
      Shu Seki
    • Organizer
      Conjugated Molecular Bricolage for Functional Materials
    • Int'l Joint Research / Invited
  • [Presentation] マイクロ波領域での複素伝導率解析による電荷移動度の非接触・非破壊計測2018

    • Author(s)
      関 修平
    • Organizer
      日本学術振興会188委員会
    • Invited
  • [Funded Workshop] pi-Figuration Japan-Spain Symposium2018

URL: 

Published: 2019-12-27  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi