Development of electrochemical techniques by optical methods using semiconductor quantum dots

2008 Fiscal Year Final Research Report

• Project/Area Number: 18201022
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Nanomaterials/Nanobioscience
• Research Institution: Osaka University
• Principal Investigator: KUWABATA Susumu Osaka University, 大学院工学研究科, 教授 (40186565)
• Co-Investigator(Renkei-kenkyūsha): TACHIBANA Yasuhiro 大阪大学, 大学院工学研究科, 講師 (30359856)
• Project Period (FY): 2006 – 2008
• Keywords: 半導体超微粒子 / 量子ドット / 色素増感太陽電池 / バイオセンシング / 電気化学測定

Research Abstract

バンドギャップ蛍光を発する半導体超微粒子を用いて、有機レドックス分子による蛍光クエンチから半導体超微粒子とレドックス分子との電子移動速度挙動を解析した。また、蛍光クエンチを利用した、新規の光学式バイオセンサーの開発も行った。

Research Products

• [Journal Article] Tuning of the fluorescence wavelength of CdTe quantum dots with 2 nm resolution by size selective photoetchng, (2009)
  • Author(s): Taro, Uematsu; Kitajima, Hiroyuki; Kohma, Takuya; Torimoto, Tsukasa; Tachibana, Yasuhiro; Kuwabata, Susumu
  • Journal Title: Nanotechnology, 20(2009) Pages: 215302-215311
  • Peer Reviewed
• [Journal Article] Polyacrylic acid coating of highly luminescent CdS nanocrystals for biological labeling applications (2008)
  • Author(s): Sato, Keiichi; Tachibana, Yasuhiro; Hattori, Shinya; Chiba, Taeko; Kuwabata, Susumu
  • Journal Title: Coll. Inter. Sci., 324 (1-2) Pages: 257-260
  • Peer Reviewed
• [Journal Article] Controlling surface reactions of CdS nanocrystals: photoluminescence activation, photoetching and photostability under light irradiation (2007)
  • Author(s): Sato, Keiichi; Kojima1, Satoshi; Hattori, Shinya; Chiba, Taeko; Ueda-Sarson1, Keiko; Torimoto, Tsukasa; Tachibana, Yasuhiro; Kuwabata, Susumu
  • Journal Title: Nanotechnology, 18(46) Pages: 465702
  • Peer Reviewed
• [Presentation] Biosensing by Fluorescent CdTe Semiconductor Q-dots (2007)
  • Author(s): Susumu Kuwabata
  • Organizer: 212th The Electrochemical Society
  • Place of Presentation: Washington D. C.
  • Year and Date: 2007-10-09
• [Presentation] Photoelectrochemical preparation of emissive semiconductor Q-dots used for fluorescence reagents
  • Author(s): S. Kuwabata
  • Organizer: 19^<th> CRC International Symposium
  • Place of Presentation: 札幌
  • Year and Date: 250070622-23
• [Presentation] Emission quenching of CdTe quantum dots caused by addition of organic redox species
  • Author(s): T. Uematsu, T. Waki, S. Taniguchi, T. Torimoto and S. Kuwabata
  • Organizer: ECS214th meetings-The Electerochemical Society of Japan-2008 Fall Meetings
  • Place of Presentation: ホノルル(アメリカ)