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2010 Fiscal Year Final Research Report

Study of relationship between conformation and optical properties of single chains of conjugated polymers

Research Project

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Project/Area Number 20340109
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Biophysics/Chemical physics
Research InstitutionTokyo Institute of Technology

Principal Investigator

VACHA Martin  東京工業大学, 大学院・理工学研究科, 准教授 (50361746)

Project Period (FY) 2008 – 2010
Keywords高分子 / 液晶
Research Abstract

Optical and photophysical properties of conjugated polymers and related systems were studied on single-molecule level in relation to their conformation and structural properties. For conjugated polymers the study revealed the relationship between conformation and exciton localization and dissociation, confirmed the existence and size of light-emitting domains in polymer chains, and found the connection between conformational dynamics and related photophysics. For non-conjugated polymers it was found that topology of individual chains is a determining factor for their diffusion properties. For single light-harvesting systems of photosynthetic bacteria the study revealed their excitonic properties and the role of structural disorder.

  • Research Products

    (23 results)

All 2011 2010 2009 2008 Other

All Journal Article (13 results) (of which Peer Reviewed: 13 results) Presentation (9 results) Remarks (1 results)

  • [Journal Article] Twist angle plays an important role in photophysical properties of a donor-acceptor type conjugated polymer : A single-molecule study2011

    • Author(s)
      S. Habuchi, H. Fujita, T. Michinobu, M. Vacha
    • Journal Title

      J. Phys. Chem B.

      Volume: (印刷中) Pages: 12

    • DOI

      DOI:10.1021/jp209405k

    • Peer Reviewed
  • [Journal Article] A single-molecule approach to conformation and photophysics of conjugated polymers(Invited Frontiers Article)2011

    • Author(s)
      H. Kobayashi, S. Onda, S. Furumaki, S. Habuchi and M. Vacha
    • Journal Title

      Chem. Phys. Lett.

      Volume: (印刷中)

    • DOI

      DOI:10.1016/j.cplett.2011.11.064

    • Peer Reviewed
  • [Journal Article] Complete Suppression of Blinking and Reduced Photo bleaching in Single MEH-PPV Chains in Solution2011

    • Author(s)
      S. Onda, H. Kobayashi, T. Hatano, S. Furumaki, S. Habuchi and M. Vacha
    • Journal Title

      J. Phys. Chem. Lett

      Volume: 2 Pages: 2827-2831

    • Peer Reviewed
  • [Journal Article] Nanoscale dynamic in homogeneities in electroluminescence of conjugated polymers2011

    • Author(s)
      T. Hatano, S. Nozue, S. Habuchi and M. Vacha
    • Journal Title

      J. Appl. Phys.

      Volume: 110 Pages: 053111(7)

    • Peer Reviewed
  • [Journal Article] Absorption linear dichroism measured directly on a single light-harvesting system : the role of disorder in chlorosomes of green photosynthetic bacteria2011

    • Author(s)
      S. Furumaki, F. Vacha, S. Habuchi, Y. Tsukatani, D. A. Bryant and M. Vacha
    • Journal Title

      J. Am. Chem. Soc.

      Volume: 133 Pages: 6703-6710

    • Peer Reviewed
  • [Journal Article] Multi-beam single-molecule defocused imaging reveals anisotropic chain orientation in a polymer thin film2011

    • Author(s)
      S. Habuchi, T. Oba and M. Vacha
    • Journal Title

      Phys. Chem. Chem. Phys.

      Volume: 13 Pages: 6970-6976

    • Peer Reviewed
  • [Journal Article] Molecular weight dependence of emission intensity and emitting sites distribution within single conjugated polymer molecules2011

    • Author(s)
      S. Habuchi, S. Onda and M. Vacha
    • Journal Title

      Phys. Chem. Chem. Phys.

      Volume: 13 Pages: 1743-1753

    • Peer Reviewed
  • [Journal Article] Conformation and physics of polymer chains : a single-molecule perspective2010

    • Author(s)
      M. Vacha, S. Habuchi
    • Journal Title

      NPG Asia Mater

      Volume: 2 Pages: 134-142

    • Peer Reviewed
  • [Journal Article] Fluorescence-detected three-dimensional linear dichroism : A method to determine absorption anisotropy in single sub-wavelength size nanoparticles2010

    • Author(s)
      S. Furumaki, S. Habuchi and M. Vacha
    • Journal Title

      Chem. Phys. Lett.

      Volume: 487 Pages: 312-314

    • Peer Reviewed
  • [Journal Article] Multimode Diffusion of Ring Polymer Molecules Revealed by a Single-Molecule Study2010

    • Author(s)
      S. Habuchi, N. Sato, T. Yamamoto, Y. Tezuka and M. Vacha
    • Journal Title

      Angew. Chem. Int. Ed.

      Volume: 49 Pages: 1418-1421

    • Peer Reviewed
  • [Journal Article] Conformation-dependent room-temperature emission spectra of single MEH-PPV chains in different polymer matrices2009

    • Author(s)
      Y. Ebihara, S. Habuchi and M. Vacha
    • Journal Title

      Chem. Lett.

      Volume: 38 Pages: 1094-1095

    • Peer Reviewed
  • [Journal Article] Conformation related exciton localization and charge-pair formation in polythiophenes : Ensemble and single molecule study2009

    • Author(s)
      T. Sugimoto, S. Habuchi, K. Ogino and M. Vacha
    • Journal Title

      J. Phys. Chem. B

      Volume: 113 Pages: 12220-12226

    • Peer Reviewed
  • [Journal Article] Mapping the emitting sites within a single conjugated polymer molecule2009

    • Author(s)
      S. Habuchi, S. Onda and M. Vacha
    • Journal Title

      Chem. Commun.

      Pages: 4868-4870

    • Peer Reviewed
  • [Presentation] Single-molecule approach to structure and photophysics of molecular complexes : from conjugated polymers to photosynthetic light harvesting(Invited)2011

    • Author(s)
      M. Vacha
    • Organizer
      15^<th> International Conference on Photochemistry
    • Place of Presentation
      北京、中国
    • Year and Date
      20110807-12
  • [Presentation] Study and active control of photophysical properties of single conjugated polymer chains(Oral)2011

    • Author(s)
      M. Vacha, S. Habuchi
    • Organizer
      16^<th> International Conference on Luminescence
    • Place of Presentation
      Ann Arbor、Michigan、USA
    • Year and Date
      20110627-0701
  • [Presentation] Absorption linear dichroism of single photosynthetic light-harvesting systems : the role of disorder in chlorosomes of green bacteria(Invited)2011

    • Author(s)
      M. Vacha
    • Organizer
      6^<th> International Symposium on Integrated Molecular Materials Engineering
    • Place of Presentation
      北京、中国
    • Year and Date
      20110607-09
  • [Presentation] Single-molecule approach to nanoscale structure and dynamics of molecular complexes : from conjugated polymers to photosynthetic light harvesting(Invited)2010

    • Author(s)
      M. Vacha
    • Organizer
      5^<th> International Symposium on Integrated Molecular Materials Engineering
    • Place of Presentation
      常州、中国
    • Year and Date
      20100920-22
  • [Presentation] Absorption linear dichroism measured directly on a single chlorosome of green photosynthetic bacteria : the role of inner structural disorder(Oral)2010

    • Author(s)
      M. Vacha, S. Furumaki, F. Vacha, J. Psencik, S. Habuchi
    • Organizer
      15^<th> International Congress on Photosynthesis
    • Place of Presentation
      北京、中国
    • Year and Date
      20100822-27
  • [Presentation] Absorption linear dichroism directly measured on a single light harvesting complex of photosynthetic bacteria(Oral)2010

    • Author(s)
      M. Vacha, S. Furumaki, F. Vacha, J. Psencik, S. Habuchi
    • Organizer
      17^<th> International Conference on Dynamical Processes in Excited states of Solids
    • Place of Presentation
      Argonne、USA
    • Year and Date
      20100620-25
  • [Presentation] Nanoscale heterogeneity and light-emission dynamics in solution processed organic light emitting devices : Single-molecule study(Invited)2009

    • Author(s)
      M. Vacha, S. Habuchi
    • Organizer
      4^<th> International Symposium on Integrated Molecular Materials Engineering
    • Place of Presentation
      成都、中国
    • Year and Date
      20091028-29
  • [Presentation] Relationship between conformation and optical/electrical properties of single conjugated polymer chains : MEH-PPV and polythiophene(Oral)2009

    • Author(s)
      M. Vacha, Y. Ebihara, T. Sugimoto, S. Onda, S. Habuchi
    • Organizer
      10th International Conference on Hole Burning and Single Molecule Spectroscopies
    • Place of Presentation
      Palm Cove、Australia
    • Year and Date
      20090622-27
  • [Presentation] Conformation and photophysics related in single chains of conjugated polymers(Invited)2008

    • Author(s)
      M. Vacha
    • Organizer
      3^<rd> International Symposium on Integrated Molecular Materials Engineering
    • Place of Presentation
      西安、中国
    • Year and Date
      20081106-08
  • [Remarks]

    • URL

      http://www.op.titech.ac.jp/lab/vacha/

URL: 

Published: 2013-07-31  

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