Exploring single electron transport system in molecular metal oxide

• Project/Area Number: 16K17894
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Functional solid state chemistry
• Research Institution: Yamaguchi University
• Principal Investigator: tsunashima ryo 山口大学, 大学院創成科学研究科, 准教授 (70466431)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2016: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
• Keywords: ポリオキソメタレート / 電気物性 / 構造・機能材料 / 電子・電気材料 / ナノ材料 / 分子性固体

Outline of Final Research Achievements

Details of the charge transport properties of mixed-valence metal oxide clusters are investigated with changing intercluster distance by employing their counter cation. Crystallographic analysis revered relation between n and inter-cluster distances and the conductivities were found to decrease with increasing alkyl chain length of the counter cation, which was explained by considering the conductivity as a function of both temperature and inter-cluster distances.

Research Products

• [Int'l Joint Research] University of Glasgow(英国)
• [Int'l Joint Research] 北京化工大学(中国)
• [Int'l Joint Research] University of Glasgow(英国)
• [Int'l Joint Research] 北京化工大学(中国)
• [Journal Article] Inter-cluster Distance Dependence of Electrical Properties of Single Crystals of a Mixed-valence Polyoxometalate (2017)
  • Author(s): Ryo Tsunashima, Ippei Nakamura, Rika Oue, Seiya Koga, Hirofumi Oki, Shin-ichiro Noro, Takayoshi Nakamura, and Tomoyuki Akutagawa
  • Journal Title: Dalton Trans Volume: 46 Issue: 37 Pages: 12619-12624
  • DOI: 10.1039/c7dt02623d
  • Peer Reviewed
• [Journal Article] Dielectric Anomaly Observed for Doubly Reduced Mixed-valence Polyoxometalate (2017)
  • Author(s): Ippei Nakamura, Ryo Tsunashima, Sadafumi Nishihara, Katsuya Inoue, and Tomoyuki Akutagawa
  • Journal Title: Chemical Communications Volume: 58 Issue: 51 Pages: 6824-6827
  • DOI: 10.1039/c7cc03361c
  • Peer Reviewed
• [Journal Article] Synthesis, Characterisation, and Structure of a Reduced Preyssler-Type Polyoxometalate (2017)
  • Author(s): C. Kato, K. Y. Maryunina, K. Inoue, S. Yamaguchi, H. Miyaoka, A. Hayashi, M. Sadakane, R. Tsunashima, S. Nishihara
  • Journal Title: Chem. Lett. Volume: 46 Issue: 4 Pages: 602-604
  • DOI: 10.1246/cl.170015
  • NAID: 130005549064
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Solid-state structure and electronic states of hydrogen-bonded dimer of pyridyl-substituted tetrathiafulvalene salted with PF6- (2017)
  • Author(s): Tomoaki Kanetou, Ryo Tsunashima, Norihisa Hoshino, Tomoyuki Akutagawa
  • Journal Title: RSC Advances Volume: 7 Issue: 11 Pages: 6236-6241
  • DOI: 10.1039/c6ra27814k
  • Peer Reviewed / Open Access
• [Journal Article] Solvent Triggered Transition of Electrical Conductivity of Polyoxometalate-based hybrid with Ni-pyridyl-tetrathiafulvalene (2017)
  • Author(s): Y. Baba, R. Tsunashima,* N. Hoshino, T. Akutagawa, S.-I. Noro and T. Nakamura,
  • Journal Title: Current Inorganic Chemistry Volume: 7 Pages: 8-12
  • DOI: 10.2174/1877944107666161208124543
  • Peer Reviewed
• [Journal Article] Exploring the solvent mediated assembly and redox activity of a POM organic hybrid [Na(SO3)2(PhPO3)4MoV4MoVI14O49]5- (2016)
  • Author(s): M. Fujibayashi, Y.-F. Song, L. Cronin and R. Tsunashima
  • Journal Title: New J. Chem Volume: 40 Issue: 10 Pages: 8488-8492
  • DOI: 10.1039/c6nj01774f
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Presentation] Electronically wired polyoxometalate-based networks (2017)
  • Author(s): R. Tsunashima
  • Organizer: 24th Congress and General Assembly of the International Union of Crystallography
  • Int'l Joint Research / Invited
• [Presentation] Electrical properties of mixed-valence POM clusters; dielectric anomaly observed for doubly reduced Keggin cluster (2017)
  • Author(s): R. Tsunashima
  • Organizer: th International symposium of Frontiers in Metal Oxide Cluster Science
  • Int'l Joint Research / Invited
• [Presentation] Macroscopic electrical property of POM-based assemblies (2017)
  • Author(s): R. Tsunashima
  • Organizer: Frontiers in Metal Oxide Cluster Science: From Fundamentals to Environmental Applications
  • Int'l Joint Research / Invited
• [Presentation] Blue electron' in molecular metal-oxide for macroscopic electric properties (2017)
  • Author(s): R. Tsunashima
  • Organizer: ujian institute of Research on the Structure of Matter
  • Int'l Joint Research / Invited
• [Presentation] Dielectric anomaly observed for mixed-valence metal-oxide cluster (2016)
  • Author(s): R. Tsunashima
  • Organizer: 2nd Japan-China Joint Meeting on the Exploring a Frontier in Molecular Ferroelectric Material
  • Place of Presentation: 名古屋大学（愛知県・名古屋市）
  • Year and Date: 2016-09-01
  • Int'l Joint Research
• [Presentation] Mixed-valence Polyoxometalate; a molecular nanoparticle for macroscopic electrical properties (2016)
  • Author(s): R. Tsunashima
  • Organizer: Frontiers in Metal Oxide Cluster Science IV
  • Place of Presentation: UK（ニューカッスル）
  • Year and Date: 2016-07-11
  • Int'l Joint Research / Invited
• [Presentation] Electric networks based on polyoxometalate clusters wired by counter cation (2016)
  • Author(s): R. Tsunashima
  • Organizer: 42nd International Conference on Coordination Chemistry
  • Place of Presentation: フランス（ブレスト）
  • Year and Date: 2016-07-04
  • Int'l Joint Research
• [Presentation] Electrical Properties of Mixed-valence Polyoxometalate Clusters Wired by Organic Molecules (2016)
  • Author(s): R. Tsunashima
  • Organizer: International Conference on Science and Technology of Synthetic Metals
  • Place of Presentation: 中国（広州市）
  • Year and Date: 2016-06-28
  • Int'l Joint Research
• [Remarks] 綱島研ホームページ
  • URL: http://web.cc.yamaguchi-u.ac.jp/~ryotsuna/tsunashima/index.html
• [Remarks] 研究室HP
  • URL: http://web.cc.yamaguchi-u.ac.jp/~ryotsuna/tsunashima/index.html