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2007 Fiscal Year Annual Research Report

光機能性DNAのナノサイエンス

Research Project

Project/Area Number 17105005
Research InstitutionOsaka University

Principal Investigator

真嶋 哲朗  Osaka University, 産業科学研究所, 教授 (00165698)

Co-Investigator(Kenkyū-buntansha) 藤塚 守  大阪大学, 産業科学研究所, 准教授 (40282040)
川井 清彦  大阪大学, 産業科学研究所, 准教授 (50314422)
遠藤 政幸  大阪大学, 産業科学研究所, 特任准教授 (70335389)
KeywordsDNA / 電荷分離 / 電荷移動 / 光 / 光電流 / ナノデバイス / ホール / バイオセンサー
Research Abstract

本研究は、DNAに光機能性分子およびナノ粒子を修飾することでDNAの光機能化を行い、そのDNAを反応場として電荷分離・電荷移動系を構築することを行うと同時に、DNAの自己組織化の性質を利用した分子集合体をデバイス表面に集積させ、DNA光電変換デバイスの構築を行うことを目的としている。
本年度は一分子蛍光測定によるDNA中の電荷移動の観測を行った。一分子計測法は非常に優れた技術であるが,これまでDNA中のホール移動の研究には適応されてこなかった.今回,ホール移動による蛍光色素の酸化反応を利用することで,一分子レベルでのDNA中のホール移動の観測法を確立することに成功した。DNAの末端に電子アクセプターとなるNI,逆の末端に蛍光色素(F1:TMRもしくはAlexa532)をラベルしたDNAを設計・合成した.UV光照射によってNIを励起するとDNA中にホールが注入され,生じたホールが蛍光色素まで到達すれば色素は酸化されて酸化物(Flox)となり発光しなくなる.すなわち発光シグナルがonからoffへと変化すると予測される.この原理に基づいて,蛍光色素の蛍光応答からDNAを移動するホールを一分子レベルで検出した.修飾DNAは,ビオチン・アビジン結合を通じてガラス基板に固定し,全反射蛍光顕微鏡を用い単一分子蛍光イメージングを行った.また、DNAマッチ配列に比べて,A-Cミスマッチを有するA4-2とA4-3ではミスマッチによる蛍光色素の退色の大幅な抑制が観測された。そこで、このミスマッチ検出法を用いて,乳がんに関与するBRCA1のSNP(一塩基多型)の識別を行ったところ、実際のターゲットDNAのSNP検出が可能であることがわかった。以上、ホール移動によって蛍光色素の酸化反応を誘起し,DNA中のホール移動の検出が一分子蛍光測定により可能であること,ミスマッチ検出ができることが分かった。

  • Research Products

    (64 results)

All 2008 2007

All Journal Article (37 results) (of which Peer Reviewed: 36 results) Presentation (24 results) Book (3 results)

  • [Journal Article] Diastereochemically controlled porphyrin dimer formation on a DNA duplex scaffold2008

    • Author(s)
      M. Endo
    • Journal Title

      J. Org. Chem. 73

      Pages: 1106-1112

    • Peer Reviewed
  • [Journal Article] Photocatalytic Cleavage of Single TiO_2/DNA Nanoconjugates2008

    • Author(s)
      T. Tachikawa
    • Journal Title

      Chem. Eur. J. 14

      Pages: 1492-1498

    • Peer Reviewed
  • [Journal Article] Reversible Intramolecular Triplet-Triplet Energy Transfer in Benzophenone-N-Methylphthalimide Dyad Aprotic Polar and Protic Polar Solvents2008

    • Author(s)
      M. Sakamoto
    • Journal Title

      J. Phys. Chem. A (in press)

    • Peer Reviewed
  • [Journal Article] Charge Separation in Acridine and Phenothiazine Modified DNA2008

    • Author(s)
      K. Kawai
    • Journal Title

      J. Phys. Chem. B (in press)

    • Peer Reviewed
  • [Journal Article] Real-Time Single-Molecule Imaging of the Spatial and Temporal Distribution of Reactive Oxygen Species: Applications to TiO_2 Photocatalysts2008

    • Author(s)
      K. Naito
    • Journal Title

      J. Phys. Chem. C (in press)

    • Peer Reviewed
  • [Journal Article] Protein recording material: photo-record/erasable protein array using a UV-eliminative linker2008

    • Author(s)
      K. Nakayama
    • Journal Title

      Langmuir (Lett.) (in press)

    • Peer Reviewed
  • [Journal Article] Three-Dimensional Writing of Copper Nanoparticles in a Polymer Matrix with Two-Colour Two-Laser2008

    • Author(s)
      M. Sakamoto
    • Journal Title

      Chem. Mater. (Commun) (in press)

    • Peer Reviewed
  • [Journal Article] Mechanism of Charge-Separation in DNA via Hole Transfer through Consecutive Adenines2008

    • Author(s)
      K. Kawai
    • Journal Title

      Chem. Eur. J. (accepted for publication)

    • Peer Reviewed
  • [Journal Article] Conformational regulation of porphyrin dimers on geometric scaffold of duplex DNA2008

    • Author(s)
      M. Endo
    • Journal Title

      Tetrahedron (in press)

    • Peer Reviewed
  • [Journal Article] Single-Molecule Observation of DNA Charge Transfer2007

    • Author(s)
      T. Takada
    • Journal Title

      Proc. Nat. Acad. Sci. USA 104

      Pages: 11179-11183

    • Peer Reviewed
  • [Journal Article] Intermolecular Electron Transfer from Excited Benzophenone Ketyl Radical2007

    • Author(s)
      M. Sakamoto
    • Journal Title

      J. Phys. Chem. A 111

      Pages: 223-229

    • Peer Reviewed
  • [Journal Article] One-electron Oxidation of alcohols by trimehtoxybenzne radical cation in the excited state during two-color two-laser flash photolysis2007

    • Author(s)
      X. Cai
    • Journal Title

      J. Phys. Chem. A 111

      Pages: 1788-1791

    • Peer Reviewed
  • [Journal Article] Bimolecular rate constant of hole transfer quenching of trimehtoxybenzne radical cation in the excited state2007

    • Author(s)
      X. Cai
    • Journal Title

      J. Phys. Chem. A 111

      Pages: 4743-4747

    • Peer Reviewed
  • [Journal Article] Intramolecular Triplet Energy Transfer via Higher Triplet Excited State during Stepwise Two-color Two-laser Irradiation2007

    • Author(s)
      Y. Oseki
    • Journal Title

      J. Phys. Chem. A 111

      Pages: 9781-9788

    • Peer Reviewed
  • [Journal Article] Electron Transfer from Axial Ligand to S_1-and S_2-Excited Phosphoros Tetraphenylporphyrin2007

    • Author(s)
      M. Fujitsuka
    • Journal Title

      J. Phys. Chem. A 111

      Pages: 10574-10579

    • Peer Reviewed
  • [Journal Article] Electron transfer from S_2 and S_1 states of pentacoordinated tetrapyrrole macrocycles to pyromellitic diimide as an axial ligand2007

    • Author(s)
      K. Harada
    • Journal Title

      J. Phys. Chem. A 111

      Pages: 11430-11436

    • Peer Reviewed
  • [Journal Article] Relationship between hole transfer rate and photosensitizwed DNA damage: importance of adenine oxidation damage2007

    • Author(s)
      K. Kawai
    • Journal Title

      J. Phys. Chem. B 111

      Pages: 2322-2326

    • Peer Reviewed
  • [Journal Article] Triplet Energy Transfer Processes of Oligothiophenes in the Higher Excited Triplet States to Quenchers2007

    • Author(s)
      Y. Oseki
    • Journal Title

      J. Phys. Chem. C 111

      Pages: 1024-1028

    • Peer Reviewed
  • [Journal Article] Fluorescence Properties of Si-linked Oligothiophenes2007

    • Author(s)
      M. Fujitsuka
    • Journal Title

      J. Phys. Chem. C 111

      Pages: 1993-1998

    • Peer Reviewed
  • [Journal Article] Design of Cyclic Reaction Driven by the Two-color Two-photon Excitation2007

    • Author(s)
      M. Sakamoto
    • Journal Title

      J. Phys. Chem. C (Lett.) 111

      Pages: 6917-6919

    • Peer Reviewed
  • [Journal Article] Correction to "Acceleration and Deceleration of Laser Induced Formation of Gold Nanoparticles in a PVA film"2007

    • Author(s)
      M. Sakamoto
    • Journal Title

      Langmuir 23

      Pages: 7886

    • Peer Reviewed
  • [Journal Article] Donor-Acceptor Substituted Tetrakis (phenylethynyl) benzenes as Emissive Molecules during Pulse Radiolysis in Benzene2007

    • Author(s)
      S. Samori
    • Journal Title

      J. Org. Chem. 72

      Pages: 2785-2793

    • Peer Reviewed
  • [Journal Article] Relationship between Charge Transfer and Charge Recombination Determines Photocurrent Efficiency through DNA Films2007

    • Author(s)
      T. Takada
    • Journal Title

      Angew. Chem. Int. Ed. 46

      Pages: 6681-6683

    • Peer Reviewed
  • [Journal Article] Hole transfer rates in A-from DNA/2′-OMeRNA hybrid2007

    • Author(s)
      K. Kawai
    • Journal Title

      Chem. Eur. J. 13

      Pages: 2386-2391

    • Peer Reviewed
  • [Journal Article] C-O Bond Cleavage of Ester Group having a Naphthyl Grounp in the Higher Excited State during Two-color Two-laser Flash Photolysis2007

    • Author(s)
      X. Cai
    • Journal Title

      Chem. Eur. J. 13

      Pages: 3143-3149

    • Peer Reviewed
  • [Journal Article] Porphyrin Light-Harvesting System Constructed in the Tobacco Mosaic Virus Scaffold2007

    • Author(s)
      M. Endo
    • Journal Title

      Chem. Eur. J. 13

      Pages: 8660-8666

    • Peer Reviewed
  • [Journal Article] Photochemical Formation of Au/Cu Bimetallic Nanoparticles with Different Shapes and Sizes in a PVA Film2007

    • Author(s)
      M. Sakamoto
    • Journal Title

      Adv. Funct. Mater. 17

      Pages: 857-862

    • Peer Reviewed
  • [Journal Article] Spin-correlated Radical Pairs in the Synthetic Hairpin DNA2007

    • Author(s)
      S. Nakajima
    • Journal Title

      Chem Phys Chem 8

      Pages: 507-509

    • Peer Reviewed
  • [Journal Article] Fabrication of Chromophore-Functionalized Gold Nanoparticles-Poly(Vinyl alcohol)Thin Film Nanocomposite:New Coordination Method using the Ni(II)-Nitrilotriacetic acid Complex Formation2007

    • Author(s)
      M. Sakamoto
    • Journal Title

      Chem Phys Chem 8

      Pages: 1701-1706

    • Peer Reviewed
  • [Journal Article] Monitoring of Three Distinct Structures of Restriction Enzyme Complexes Using Characteristic Fluorescence from Site-selectively Incorporated Solvatochromic Probe2007

    • Author(s)
      K. Nakayama
    • Journal Title

      Photochem. Photobiol. Sci. 6

      Pages: 836-841

    • Peer Reviewed
  • [Journal Article] Errata to "Two-color Two-laser Fabrication of Gold Nanoparticles in a PVA Film"2007

    • Author(s)
      M. Sakamoto
    • Journal Title

      Chem. Phys. Lett. 442

      Pages: 170

    • Peer Reviewed
  • [Journal Article] Cleavage of O-C Bond of Naph-O-CH_2X(X=H,methyl,phenyl)Compounds in the Higher Excited State during Two-color Two-laser Flash Photolysis2007

    • Author(s)
      X. Cai
    • Journal Title

      Chem. Phys. Lett 443

      Pages: 248-252.

    • Peer Reviewed
  • [Journal Article] Nanoscopic Heterogeneities in Adsorption and Electron Transfer Processes of Perylene Diimide Dye on TiO_2 Nanoparticles Studied by Single-Molecule Fluorescence Spectroscopy2007

    • Author(s)
      T. Tachikawa
    • Journal Title

      Chem. Phys. Lett. 443

      Pages: 313-318

    • Peer Reviewed
  • [Journal Article] Monitoring G-quadruplex structures and G-quadruplex-ligand complex by 2-aminopurine modified oligonucleotides2007

    • Author(s)
      T, Kimura
    • Journal Title

      Tetrahedron 63

      Pages: 3585-3590

    • Peer Reviewed
  • [Journal Article] S_2-and S_1-States Properties of Zinc Porphyrin Polypeptides2007

    • Author(s)
      M. Fujitsuka
    • Journal Title

      J. Photochem. Photobiol. A 188

      Pages: 346-350

    • Peer Reviewed
  • [Journal Article] Intermolecular Exciplex Formation and Intramolecular Electron Transfer during Photoirradiation of 1,8-Naphthalimide-linker-phenothiazine Dyads in Methylated Benzenes2007

    • Author(s)
      D. W. Cho
    • Journal Title

      J. Photochem. Photobiol. A 190

      Pages: 101-109

    • Peer Reviewed
  • [Journal Article] Advances2007

    • Author(s)
      M. Fujitsuka and T. Majima
    • Journal Title

      Photochemistry Volume 29, John Wiley & Sons, Inc.

      Pages: 53-109

  • [Presentation] Higher Excited State Chemistry for Light-Energy Conversion2008

    • Author(s)
      M. Fujitsuka
    • Organizer
      The 3rd CNU-SANKEN Joint Symposium on Advanced Materials Science
    • Place of Presentation
      Daejeon, Korea
    • Year and Date
      20080227-28
  • [Presentation] DNA Devices Based on Charge Transfer in DNA2008

    • Author(s)
      T. Majima
    • Organizer
      The 3rd CNU-SANKEN Joint Symposium on Advanced Materials Science
    • Place of Presentation
      Daejeon, Korea
    • Year and Date
      20080227-20080228
  • [Presentation] Charge Separation in Acridine Modified DNA2008

    • Author(s)
      K, Kawai, M, Fujitsuka, and T, Majima
    • Organizer
      The 11th SANKEN International Symposium 2007/SANKEN Nanotechnology Symposium/SANKEN MSTEC Symposium
    • Place of Presentation
      淡路夢舞台国際会議場
    • Year and Date
      20080204-05
  • [Presentation] Kinetic SNP typing Based on Charge Transfer through DNA2008

    • Author(s)
      Y, Osakada, K, Kawai, M, Fujitsuka, and T, Majima
    • Organizer
      The 11th SANKEN International Symposium 2007/SANKEN Nanotechnology Symposium/SANKEN MSTEC Symposium
    • Place of Presentation
      淡路夢舞台国際会議場
    • Year and Date
      20080204-05
  • [Presentation] Intramolecular Electron Transfer from Axial Ligands to S_2-Excited Tetraphenyl Porphyrins2008

    • Author(s)
      M, Fujitsuka and T, Majima
    • Organizer
      The 11th SANKEN International Symposium 2007/SANKEN Nanotechnology Symposium/SANKEN MSTEC Symposium
    • Place of Presentation
      淡路夢舞台国際会議場
    • Year and Date
      20080204-05
  • [Presentation] Single-Molecule Detection of Airborne Singlet Oxygen2008

    • Author(s)
      T, Tachikawa, K, Naito, M, Fujitsuka and T, Majima
    • Organizer
      The 11th SANKEN International Symposium 2007/SANKEN Nanotechnology Symposium/SANKEN MSTEC Symposium
    • Place of Presentation
      淡路夢舞台国際会議場
    • Year and Date
      20080204-05
  • [Presentation] Design of Cyclic Reaction Driven by the Two-color Two-photon Excitation, Masanori Sakamoto2008

    • Author(s)
      M, Fujitsuka and T, Majima
    • Organizer
      The 11th SANKEN International Symposium 2007/SANKEN Nanotechnology Symposium/SANKEN MSTEC Symposium
    • Place of Presentation
      淡路夢舞台国際会議場
    • Year and Date
      20080204-05
  • [Presentation] Development of New TiO_2 Photocatalyst: Mechanistic Study of theTiO_2 Photocatalystic Reactions2008

    • Author(s)
      T. Majima
    • Organizer
      The 9th International Symposium on Eco-materials Processing and Design
    • Place of Presentation
      Changwon Exhibition Convention Center, Changwon, Korea
    • Year and Date
      20080107-09
  • [Presentation] Photoinduced Charge Separation in Titania Nanotubes2008

    • Author(s)
      Takashi Tachikawa, S. Tojo, M. Fujitsuka, T. Sekino, and T. Majima
    • Organizer
      The 9th International Symposium on Eco-materials Processing and Design
    • Place of Presentation
      Changwon Exhibition Convention Center, Changwon, Korea
    • Year and Date
      20080107-09
  • [Presentation] Single-Molecule Detection of Airborne Singlet Oxygen2008

    • Author(s)
      K, Naito, T, Tachikawa, S, C, Cui, A, Sugimoto, M, Fujitsuka, and T, Majima
    • Organizer
      The 9th International Symposium on Eco-materials Processing and Design
    • Place of Presentation
      Changwon Exhibition Convention Center, Changwon, Korea
    • Year and Date
      20080107-09
  • [Presentation] Development of New TiO_2 Photocatalysts2007

    • Author(s)
      T. Majima
    • Organizer
      7th Pacific Rim Conference on Ceramic and Glass Technology
    • Place of Presentation
      Shanghai
    • Year and Date
      20071111-14
  • [Presentation] Adsorption and Electron Transfer Processes of Perylene Diimide Dye on TiO_2 Nanoparticles Studied by Single-Molecule2007

    • Author(s)
      S.-C. Cui, T. Tachikawa, S. Tojo, M. Fujitsuka, T. Majima
    • Organizer
      7th Pacific Rim Conference on Ceramic and Glass Technology
    • Place of Presentation
      Shanghai
    • Year and Date
      20071111-14
  • [Presentation] Possibility of Negative Charge Conduction in Cyclophanes2007

    • Author(s)
      T. Majima
    • Organizer
      The Third Taiwan-Japan Bilateral Symposiumon Functional Molecules, Janfusen
    • Place of Presentation
      Taiwan
    • Year and Date
      20071111-14
  • [Presentation] Charge Transfer in DNA2007

    • Author(s)
      T. Majima
    • Organizer
      2007 Photochemistry Gordon Research Conference
    • Place of Presentation
      Bryant University, Smithfield, Rhode Island, USA
    • Year and Date
      20070708-20070713
  • [Presentation] Mechanistic Insight into the TiO_2 Photocatalystic Reactions2007

    • Author(s)
      T. Majima
    • Organizer
      23th International Conference on Photochemistry
    • Place of Presentation
      Cologne, Germany
    • Year and Date
      20070708-09
  • [Presentation] Rapid Energy Migration along Photofunctional Polymers2007

    • Author(s)
      M. Fujitsuka and T. Majima
    • Organizer
      23th International Conference on Photochemistry
    • Place of Presentation
      Cologne, Germany
    • Year and Date
      20070708-09
  • [Presentation] Charge Separation via Rapid Hole Transfer through Adenine-Hopping2007

    • Author(s)
      T. Takada, K. Kawai, M. Fujitsuka, and T. Majima
    • Organizer
      23th International Conference on Photochemistry
    • Place of Presentation
      Cologne, Germany
    • Year and Date
      20070708-09
  • [Presentation] Development of New TiO_2 Photocatalyst: Mechanistic Study of theTiO_2 Photocatalystic Reactions2007

    • Author(s)
      T. Majima
    • Organizer
      2007 Korea-Japan Symposium on Frontier Photoscience
    • Place of Presentation
      Hyundai Hotel Gyeongju, Korea
    • Year and Date
      2007-11-24
  • [Presentation] Intramolecular Electron Transfer from Axial Ligands to S_2-Excited Tetraphenyl Porphyrins2007

    • Author(s)
      M. Fujitsuka and T. Majima
    • Organizer
      2007 Korea-Japan Symposium on Frontier Photoscience
    • Place of Presentation
      Hyundai Hotel, Gyeongju, Korea
    • Year and Date
      2007-11-24
  • [Presentation] Excited State Properties of Trimethoxybenzene Radical Cation2007

    • Author(s)
      X. Cai, M. Fujitsuka, and T. Majima
    • Organizer
      2007 Korea-Japan Symposium on Frontier Photoscience
    • Place of Presentation
      Hyundai Hotel, Gyeongju, Korea
    • Year and Date
      2007-11-24
  • [Presentation] Photoinduced Electron Transfer from S_2-Excited Porphyrins and Phthalocyanines2007

    • Author(s)
      K. Harada, M. Fujitsuka and T. Majima
    • Organizer
      2007 Korea-Japan Symposium on Frontier Photoscience
    • Place of Presentation
      Hyundai Hotel, Gyeongju, Korea
    • Year and Date
      2007-11-24
  • [Presentation] Energy Levels of Oligothiophenes in Higher Triplet Excited State2007

    • Author(s)
      Y. Oseki, M. Fujitsuka, and T. Majima
    • Organizer
      2007 Korea-Japan Symposium on Frontier Photoscience
    • Place of Presentation
      Hyundai Hotel, Gyeongju, Korea
    • Year and Date
      2007-11-24
  • [Presentation] One-electron oxidation of organic compounds during TiO_2 photocatalytic reactions2007

    • Author(s)
      T. Tachikawa and T. Majima
    • Organizer
      Langmuir Symposium 2007
    • Place of Presentation
      大阪大学
    • Year and Date
      2007-10-09
  • [Presentation] Photochemical synthesis of metal nanoparticles in a PVA film2007

    • Author(s)
      M. Sakamoto and T. Majima
    • Organizer
      Langmuir Symposium 2007
    • Place of Presentation
      大阪大学
    • Year and Date
      2007-10-09
  • [Book] 「光と界面がおりなす新しい化学の世界-光触媒と光エネルギー変換」2008

    • Author(s)
      真嶋哲朗
    • Total Pages
      50-58
    • Publisher
      (株)クバプロ
  • [Book] Soft Nanomaterials2008

    • Author(s)
      M. Endo and T. Majima
    • Publisher
      American Scientific Publishers (in press)
  • [Book] "Single-Molecule Fluorescence Imaging Techniques for the Detection of Reactive Oxygen Species" in Modern Research and Educational Topics in Microscopy2007

    • Author(s)
      T. Tachikawa and T. Majima
    • Total Pages
      9
    • Publisher
      FORMATEX, Spain

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Published: 2010-02-04   Modified: 2016-04-21  

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