Development of electrochemical techniques by optical methods using semiconductor quantum dots

• 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(Kenkyū-buntansha): 橘 泰宏 大阪大学, 大学院・工学研究科, 講師 (30359856) ; 小谷松 大祐 大阪大学, 大学院工学研究科, 助手 (80333847)
• 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
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥45,500,000 (Direct Cost: ¥35,000,000、Indirect Cost: ¥10,500,000); Fiscal Year 2008: ¥11,830,000 (Direct Cost: ¥9,100,000、Indirect Cost: ¥2,730,000); Fiscal Year 2007: ¥15,600,000 (Direct Cost: ¥12,000,000、Indirect Cost: ¥3,600,000); Fiscal Year 2006: ¥18,070,000 (Direct Cost: ¥13,900,000、Indirect Cost: ¥4,170,000)
• 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 / オプティカル電気化学測定 / 量子サイズ効果 / バンドギャップ蛍光 / サイズ選択光エッチング法

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] In Situ Surface Plasmon Resonance Measurements of Self-assembled Monolayers of Ferrocenylalkylthiols under Constant Potentials (2008)
  • Author(s): Uematsu, Taro
  • Journal Title: Anal. Sci 24 Pages: 307-312
  • Peer Reviewed
• [Journal Article] Polyacrylic acid coating of highly luminescent CdS nanocrystals for biological labeling applications (2008)
  • Author(s): Sato, Keiichi
  • Journal Title: J. Coll. Inter. Sci. 324 Pages: 257-260
  • Peer Reviewed
• [Journal Article] Electrochemical desorption of a self-assembled monolayer of alkanethiol in ionic liquids (2008)
  • Author(s): Daisuke Oyamatsu
  • Journal Title: J. Electroanal. Chem. 615 Pages: 110-116
  • Peer Reviewed
• [Journal Article] Electrochemical desorption of a self-assembled monolayer of alkanethiol in ionic liquids (2008)
  • Author(s): Daisuke Oyamatsu
  • Journal Title: J. Electroanal. Chem. (in press)
  • Peer Reviewed
• [Journal Article] Development of new techniques for scanning electron microscope observation using ionic liquid (2008)
  • Author(s): Satoshi Arimoto
  • Journal Title: J. Electrochim. Acta (in press)
  • 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: 465702-465702
  • Peer Reviewed
• [Journal Article] Utilization of AC Impedance Measurements for Electrochemical Glucose Sensing Using Glucose Oxidase to Improve Detection Selectivity (2007)
  • Author(s): Takuya Kohma
  • Journal Title: Bull. Chem. Soc. Jpn. 80 Pages: 158-165
  • Peer Reviewed
• [Journal Article] CdS Quantum Dots Sensitized TiO_2 Sandwich Type Photoelectrochemical Solar Cells (2007)
  • Author(s): Yasuhiro Tachibana
  • Journal Title: Chem. Lett. 36 Pages: 88-89
  • NAID: 10018663189
  • Peer Reviewed
• [Journal Article] Electrocatalytic Activity of Pt and Ru Photodeposited Polyaniline Electrodes for Methanol Oxidation (2007)
  • Author(s): Satoshi Arimoto
  • Journal Title: Electrochemistry 75 Pages: 39-44
  • Peer Reviewed
• [Journal Article] Preparation of selective micro glucose sensor without permselective membrane by electrochemical deposition of ruthenium and glucose oxidase (2007)
  • Author(s): Takuya Kohma
  • Journal Title: Electrochem. Commun. 9 Pages: 1012-1016
  • Peer Reviewed
• [Journal Article] Controlling surface reactions of CdS nanocrystals: photoluminescence activation, photoetching and photostability under light irradiation+G15485 (2007)
  • Author(s): Keiichi Sato
  • Journal Title: Nanotechnology 18 Pages: 465702-465711
  • Peer Reviewed
• [Journal Article] Utilization of AC Impedance Measurements for electrochemical Glucose Sensing Using Glucose Oxidase to Improve Detection Selectivity (2007)
  • Author(s): Takuya Kohma
  • Journal Title: Bull. Chem. Soc. Jpn 80巻1号 Pages: 158-165
• [Journal Article] CdS Quantum Dots Sensitized TiO_2 Sandwich Type Photoelectrochemical Solara Cells (2007)
  • Author(s): Yasuhiro Tachibana
  • Journal Title: Chem. Lett. 36巻1号 Pages: 88-89
• [Journal Article] Electrocatalytic Activity of Pt and Ru Photodeposited Polyaniline Electrodes for Methanol Oxidation (2007)
  • Author(s): Satoshi Arimoto
  • Journal Title: Electrochemistry 75巻1号 Pages: 39-44
• [Journal Article] Glucose Sensing Using p-Acetamidophenol as an Electron Mediator between Glucose Oxidase and Nafion-coated Glassy Carbon Electrode (2006)
  • Author(s): Takuya Kohma
  • Journal Title: Electrochemistry 74巻10号 Pages: 804-809
• [Presentation] Ag (Ga_xIn_<1-x>) S_2量子ドットの光学特性 (2009)
  • Author(s): 土井 利浩
  • Organizer: 電気化学会第76回大会
  • Place of Presentation: 京都大学
• [Presentation] 蛍光をプローブとした半導体量子ドットCdTeの電子移動に関する考察 (2008)
  • Author(s): 上松 太郎
  • Organizer: 平成20年度 第3回関西電気化学研究会
  • Place of Presentation: 京都大学(京都)
  • Year and Date: 2008-12-13
• [Presentation] Systematic studies on emission quenching of CdTe quantum dots (2008)
  • Author(s): T. Uematsu
  • Organizer: 6th Asian Conference on Electrochemistry in Taipei
  • Place of Presentation: 台湾
• [Presentation] Emission quenching of CdTe quantum dots caused by addition of organic redox species (2008)
  • Author(s): T. Uematsu
  • Organizer: PRiME 2008
  • Place of Presentation: Hawaii, USA
• [Presentation] Studies on electron transfer of quantum dots by using their fluorescence as a probe (2008)
  • Author(s): T. Uematsu
  • Organizer: 3rd International Symposium on Integrated Molecular / Materials Engineering
  • Place of Presentation: 西安
• [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] 粒径の異なるCdTe粒子の有機レドックス分子の蛍光クエンチング挙動 (2007)
  • Author(s): 脇 貴裕
  • Organizer: 2007年 電気化学会秋季大会
  • Place of Presentation: 東京工業大学
  • Year and Date: 2007-09-20
• [Presentation] ルテニウムとグルコースオキシダーゼの電気化学析出を利用した微小グルコースセンサの作製 (2007)
  • Author(s): 高馬 卓也
  • Organizer: 電気化学会第74回大会
  • Place of Presentation: 東京理科大学
  • Year and Date: 2007-03-29
• [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)
• [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
• [Remarks]
  • URL: http://www.chem.eng.osaka-u.ac.jp/~elechem/index.htm
• [Remarks]
  • URL: http://www.chem.eng.osaka-u.ac.jp/~elechem/index.htm