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光励起三重項状態間の吸収を利用した光学センサーの開発

Research Project

Project/Area Number 16656254
Research Category

Grant-in-Aid for Exploratory Research

Allocation TypeSingle-year Grants
Research Field Biofunction/Bioprocess
Research InstitutionTokyo Institute of Technology

Principal Investigator

大倉 一郎  東京工業大学, 大学院生命理工学研究科, 教授 (90089821)

Co-Investigator(Kenkyū-buntansha) 小倉 俊一郎  東京工業大学, 大学院・生命理工学研究科, 助手 (90343160)
Project Period (FY) 2004 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 2006: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2005: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 2004: ¥1,400,000 (Direct Cost: ¥1,400,000)
Keywords酸素センサー / ポルフィリン / リン光 / 光励起電子移動 / 光学センサー / 三重項状態 / リン光化合物 / レーザーフラッシュ法
Research Abstract

18年度は定常的な光励起三重項状態間の吸収(T-T吸収)を測定し酸素センシングする方法(Stationary quenching法)を開発した。さらに、この方法を利用して、光学的な酸素センサーの開発に成功した。
Stationary quenching法はポルフィリンの光励起三重項状態が酸素によって消光されることを利用して、T-T吸収を測定し酸素センシングを行う。パルスレーザーを励起光源として用いる光励起3重項寿命測定とは異なり、Stationary quenching法では、定常光のみを利用する。励起光とT-T吸収モニター光の二つの光源による定常的な光励起により、酸素濃度を定量する方法である。したがって、酸素濃度の変化はT-T吸収強度の変化として測定される。
Stationary quenching法による酸素センシングシステムを構築した。酸素センサー素子の色素としてZinc tetrakis (pentanuorophenyl) porphyrin (ZnTFPP)を用いた。ZnTFPPをポリスチレンに混合し製膜した酸素センサー素子を調製し、その表面酸素濃度を変化させ、酸素センサー特性を評価した。その結果、酸素濃度とT-T吸収の吸光度が直線関係となり、また、酸素濃度5%以下の領域においても高い精度が得られた。このことから、Stationary quenching法を利用した光学的酸素センシングシステムが構築できることがわかった。さらに、ZnTFPPをアルミニウム酸化膜にドープしたセンサー素子を調製し同様の測定を行った。この場合においても、同様に光学的に酸素センシングできることがわかった。

Report

(3 results)
  • 2006 Annual Research Report
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • Research Products

    (21 results)

All 2007 2006 2005 2004 2003

All Journal Article (18 results) Book (2 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Oxygen concentration imaging in a single living cell using phosphorescence lifetime of Pt-porphyrin2007

    • Author(s)
      Takashi Saito, Noriyuki Asakura, Toshiaki Kamachi, Ichiro Okura
    • Journal Title

      Journal of Porphyrins and Phthalocyanines (印刷中)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] N-Terminus Methylation of Desulfovibrio vulgaris (Miyazaki) F cytochrome c32007

    • Author(s)
      Shin Iida, Yusuke Kawano, Noriyuki Asakura, Kenji Tabata, Ichiro Okura, Toshiaki Kamachi
    • Journal Title

      Chem. Let. 36

      Pages: 184-184

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Role of positive charge of lysine residue on cytochrome c3 for electrostatic interaction with hydrogenase2007

    • Author(s)
      Shin Iida, Noriyuki Asakura, Kenji Tabata, Ichiro Okura, Toshiaki Kamachi
    • Journal Title

      Journal of Porphyrins and Phthalocyanines 11

      Pages: 66-66

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Motion of redox molecule in solution monitored by highly sensitive EQCM Technique2006

    • Author(s)
      Noriyuki Asakura, Toshiaki Kamachi, Ichiro Okura
    • Journal Title

      Research on Chemical Intermediates 32

      Pages: 341-355

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Development of novel optical oxygen sensing system based on stationary T-T Absorption2006

    • Author(s)
      Noriyuki Asakura, Toshiaki Kamachi, Ichiro Okura
    • Journal Title

      Measurement Science and Technology 17

      Pages: 1237-1241

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Incorporation of unnatural amino acid into cytochrome c3 and specific viologen binding to the unnatural amino acid2006

    • Author(s)
      Shin Iida, Noriyuki Asakura, Kenji Tabata, Ichiro Okura, Toshiaki Kamachi
    • Journal Title

      ChemBioChem 7

      Pages: 1853-1853

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Localization of poly-L-lysine-photosensitizer conjugate in nucleus.2005

    • Author(s)
      S Ogura, Keiko, K Yazaki, I.Okura
    • Journal Title

      J.Controlled Release 103

      Pages: 1-6

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Cellular uptake and photocytotoxicity of glycoconjugated chlorines in HeLa cells.2005

    • Author(s)
      S Hirohara, Obata, I.Okura
    • Journal Title

      J.Photochem.Photobiol.B : Biology 78

      Pages: 7-15

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Localization and photodynamic activity of poly-L-lysine-chlorin conjugate for tumor-bearing mouse.2005

    • Author(s)
      K.Takahashi, S.Ogura, L.Okura
    • Journal Title

      Porphyrins 14

      Pages: 139-142

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Pohtoinduced electron transfer with hydrophobic porphyrin and amphipatic viologen in aqueous solution.2005

    • Author(s)
      A.Tokita, R.Goto, I.Okura
    • Journal Title

      Porphyrins 14

      Pages: 121-125

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Role of lysine residue of cytochrome c_3 on ES complex formation.2005

    • Author(s)
      A.Kameyama, S.Iida, I.Okura
    • Journal Title

      Porphyrins 14

      Pages: 127-131

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Kinetic measurement of ES complex formation between hydrogenase and cytochrome c_3 by QCM.2005

    • Author(s)
      A.Kameyama, S.Iida, I.Okura
    • Journal Title

      Porphyrins 14

      Pages: 133-138

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Cellular uptake and photocytctoxicity of glycoconjugated chlorines in HeLa cells2005

    • Author(s)
      S.Hirohara, S.Ogura, I.Okura
    • Journal Title

      Photochem.Photobiol. B : Biology 78

      Pages: 7-15

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Localization of poly-L-lysine - photosensitizer conjugate in nucleus2005

    • Author(s)
      S.Ogura, K.Yazaki, I.Okura
    • Journal Title

      J. Controlled Release 103

      Pages: 1-6

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Cellular uptake and photocytotoxicity of glycoconjugated porphyrins in HeLa cells2004

    • Author(s)
      S.Hirohara, S.Ogura, I.Okura
    • Journal Title

      Photochem.Photobiol. 80

      Pages: 301-308

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Oxygen sensing by phosphorescence intensity at stationary state of quenching2004

    • Author(s)
      H.Negishi, N.Asakura, I.Okura
    • Journal Title

      Porphyrins 13

      Pages: 77-79

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Electroless formation of pressure sensitive thin films of platinum porphyrin using surfactants with an azobenzene group2004

    • Author(s)
      Y.Ito, K.Mittsuo, I.Okura
    • Journal Title

      Chem Lett 33

      Pages: 222-223

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Optical oxygen sensing materials : Chemisorption film of ruthenium (II) polypyridyl complexes attached to anionic polymer2003

    • Author(s)
      Y.Amao, I.Okura
    • Journal Title

      Sensors and Actuators B 88

      Pages: 162-167

    • Related Report
      2004 Annual Research Report
  • [Book] 触媒科学、電気化学、実験科学講座2006

    • Author(s)
      蒲池利章, 大倉一郎
    • Publisher
      日本化学会編
    • Related Report
      2005 Annual Research Report
  • [Book] 図解バイオ活用技術のすべて(東京工業大学生命理工学研究科編)2004

    • Author(s)
      大倉一郎(分担)
    • Total Pages
      251
    • Publisher
      工業調査会
    • Related Report
      2004 Annual Research Report
  • [Patent(Industrial Property Rights)] 試料における酸素濃度2006

    • Inventor(s)
      大倉一郎, 蒲池利章, 朝倉則行
    • Industrial Property Rights Holder
      東京工業大学, 日産化学工業(株)
    • Filing Date
      2006-02-03
    • Related Report
      2005 Annual Research Report

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Published: 2004-04-01   Modified: 2016-04-21  

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