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2011 Fiscal Year Final Research Report

Development of the anti-Stokes fluorophore and its application

Research Project

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Project/Area Number 22655033
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeSingle-year Grants
Research Field Polymer chemistry
Research InstitutionKyoto University

Principal Investigator

CHUJO Yoshiki  京都大学, 大学院・工学研究科, 教授 (70144128)

Project Period (FY) 2010 – 2011
Keywordsアップコンバージョン / 三重項-三重項消滅 / デンドリマー
Research Abstract

The dendrimer complex which can show triplet-triplet annihilation-supported upconversion from visible light to UV light in aqueous solutions was developed. The Pt complex of octaethylporphyrin as a sensitizer and anthracene as an emitter were accumulated into the water-soluble dendrimers, and triplet-triplet annihilation-supported upconversion can efficiently occur in the dendrimer complexes in water. In addition, the fluorescence intensities of the dendritic complexes showed significant dependency on pH. In addition, the influence on the efficiencies of the upconversion by oxygen under biological condition was investigated with the dendrimer complexes containing sensitizers and fluorophores. The emissions via TTA-supported upconversion were significantly depended on the dissolved oxygen(DO) concentrations. It was found from the evaluation of the quantum yields that the degree of the quenching to the triplet-excited states of the sensitizers and the fluorophore by oxygen was responsible for the upconversion efficiency. These data indicate that the environment-responsive upconversion in water can be realized. From these results, it can be said that the purposes of this project were fully accomplished.

  • Research Products

    (27 results)

All 2012 2011 2010 Other

All Journal Article (18 results) Presentation (7 results) Book (1 results) Remarks (1 results)

  • [Journal Article] Advanced Functional Materials Based on Polyhedral Oligomeric Silsesquioxane(POSS)2012

    • Author(s)
      Tanaka, K.; Chujo, Y. J. Mater
    • Journal Title

      Chem

      Volume: 22 Pages: 1733-1746

    • DOI

      DOI:10.1039/c1jm14231c

  • [Journal Article] Enhancements of Optical Properties of Dyes for Bioprobes by Freezing Effect of Molecular Motion using POSS-core Dendrimers2012

    • Author(s)
      Tanaka, K.; Jeon, J.-H.; Inafuku, K.; Chujo, Y.
    • Journal Title

      Bioorg. Med. Chem

      Volume: 20 Pages: 915-919

    • DOI

      DOI:10.1039/c1ob06630g

  • [Journal Article] Heavy Metal-Free 19F NMR Probes for Quantitative Measurements of Glutathione Reductase Activity Using Silica Nanoparticles as a Signal Quencher2012

    • Author(s)
      Tanaka, K.; Kitamura, N.; Chujo, Y.
    • Journal Title

      Bioorg. Med. Chem

      Volume: 20 Pages: 96-100

    • DOI

      DOI:10.1016/j.bmc.2011.11.026

  • [Journal Article] Enhancement of Affinity in Molecular Recognition via Hydrogen Bonds by POSS-Core Dendrimer and Its Application for Selective Complex Formation between Guano sine Triphosphate and 1, 8-Naphthyridine Derivatives2012

    • Author(s)
      Tanaka, K.; Murakami, M.; Jeon, J.-H.; Chujo, Y.
    • Journal Title

      Org. Biomol. Chem

      Volume: 10 Pages: 90-95

    • DOI

      DOI:10.1039/c1ob06630g

  • [Journal Article] Tuning of Interparticle Distances between Imidazolium-Modified Gold Nanoparticles in Dispersive Clusters via Anion Exchange2011

    • Author(s)
      Miyoshi, E.; Naka, K.; Tanaka, K.; Narita, A.; Chujo, Y.
    • Journal Title

      Colloids Surf

      Volume: 390 Pages: 126-133

    • DOI

      DOI:10.1016/j.colsurfa.2011.09.016

  • [Journal Article] Thermodynamic Study of POSS-Based Ionic Liquids with Various Numbers of Ion Pairs2011

    • Author(s)
      Tanaka, K.; Ishiguro, F.; Chujo, Y. Polym. J.
    • Journal Title

      Polym. J

      Volume: 43 Pages: 708-713

    • DOI

      DOI:10.1038/pj.2011.54

  • [Journal Article] Reductive Glutathione-Responsive Molecular Release Using Water-Soluble POSS Network Polymers2011

    • Author(s)
      Tanaka, K.; Ohashi, W.; Kitamura, N.; Chujo, Y.
    • Journal Title

      Bull. Chem. Soc. Jpn

      Volume: 84 Pages: 612-616

    • DOI

      DOI:10.1246/bcsj.20110032

  • [Journal Article] Conductivity Regulation of the Mixed-Valence Tetrathiafulvalene Nanowire/Poly(methyl methacrylate) Composites Using Heterogeneous Tetrathiafulvalene Derivatives2011

    • Author(s)
      Tanaka, K.; Matsumoto, T.; Ishiguro, F.; Chujo, Y.
    • Journal Title

      J. Mater. Chem

      Volume: 21 Pages: 9603-9607

    • DOI

      DOI:10.1039/c1jm11161b

  • [Journal Article] rsonic Acid-Presenting Super paramagnetic Iron Oxide for pH-Responsive Aggregation under Slight Acidic Conditions2011

    • Author(s)
      Minehara, H.; Naka, K.; Tanaka, K.; Narita, A.; Chujo, Y.
    • Journal Title

      Bioorg. Med. Chem

      Volume: 19 Pages: 2282-2286

    • DOI

      DOI:10.1016/j.bmc.2011.02.027

  • [Journal Article] Bi-Modal Quantitative Monitoring for Enzymatic Activity with Simultaneous Signal Increases in 19F NMR and Fluorescence Using Silica Nanoparticle-Based Molecular Probes2011

    • Author(s)
      Tanaka, K.; Kitamura, N.; Chujo, Y.
    • Journal Title

      Bioconjugate Chem

      Volume: 22 Pages: 1484-1490

    • DOI

      DOI:10.1021/bc100381x

  • [Journal Article] POSS Ionic Liquid2010

    • Author(s)
      K.; Ishiguro, F.; Chujo, Y.
    • Journal Title

      J. Am. Chem. Soc

      Volume: 132 Pages: 17649-17651

    • DOI

      DOI:10.1021/ja105631j

  • [Journal Article] Side-Chain Effect of Octa-Substituted POSS Fillers on Refraction in Polymer Composites2010

    • Author(s)
      Tanaka, K.; Adachi, S.; Chujo, Y.
    • Journal Title

      J. Polym. Sci. Part A : Polym. Chem

      Volume: 48 Pages: 5712-5717

    • DOI

      DOI:10.1002/pola.24370

  • [Journal Article] Biodegradable Main-Chain Phosphate-Caged Fluoresce in Polymers for the Evaluation of Enzymatic Activity2010

    • Author(s)
      Tanaka, K.; Kitamura, N.; Chujo, Y.
    • Journal Title

      Macromolecules

      Volume: 43 Pages: 6180-6184

    • DOI

      DOI:10.1021/ma1009066

  • [Journal Article] Preparation for Highly-Sensitive MRI Contrast Agents Using Core/Shell Type Nanoparticles Consisted of Multiple SPIO Cores with Thin Silica Coating2010

    • Author(s)
      Tanaka, K.; Narita, A.; Kitamura, N.; Uchiyama, W.; Morita, M.; Inubushi, T.; Chujo, Y.
    • Journal Title

      Langmuir

      Volume: 26 Pages: 11759-11762

    • DOI

      DOI:10.1021/la1015077

  • [Journal Article] Environment-Responsive Up conversion Based on Dendrimer-Supported Efficient Triplet-Triplet Annihilation in Aqueous Media2010

    • Author(s)
      Tanaka, K.; Inafuku, K.; Chujo, Y.
    • Journal Title

      Chem. Commun

      Volume: 46 Pages: 4378-4380

    • DOI

      DOI:10.1039/c0cc00266f

  • [Journal Article] Facile Preparation of Concentration-Gradient Materials with Radical Cation and the Mixed-Valence State of Tetrathiafulvalene in Conventional Polymer Films2010

    • Author(s)
      Tanaka, K.; Ishiguro, F.; Chujo, Y.
    • Journal Title

      Langmuir

      Volume: 26 Pages: 10254-10258

    • DOI

      DOI:10.1021/la100431k

  • [Journal Article] Photo-Induced Radical Generation and Self-Assembly of TTF into the Mixed-Valence State in the Poly(vinyl chloride) Film under UV Irradiation2010

    • Author(s)
      Tanaka, K.; Ishiguro, F.; Chujo, Y.
    • Journal Title

      Langmuir

      Volume: 26 Pages: 1152-1156

    • DOI

      DOI:10.1021/la902246z

  • [Journal Article] Synthesis of-Conjugated Polymers Containing Aminoquinoline-Borafluorene Complexes in the Main-Chain

    • Author(s)
      Tokoro, Y.; Nagai, A.; Tanaka, K.; Chujo, Y. Macromol
    • Journal Title

      Rapid Commun

      Volume: (in press)

    • DOI

      DOI:10.1002/marc.201100773

  • [Presentation] 高分子材料を基盤とした定量的MRI/光学プローブの開発2011

    • Author(s)
      田中一生・中條善樹
    • Organizer
      最先端研究開発支援プログラム
    • Place of Presentation
      放射線医学総合研究所
    • Year and Date
      2011-10-18
  • [Presentation] Construction of POSS-based functional materials for monitoring biological events2011

    • Author(s)
      Yoshiki Chujo
    • Organizer
      第14回アジア化学会議(14th ACC)
    • Year and Date
      2011-09-07
  • [Presentation] 高分子材料を基盤とした定量的MRI/光学プローブの分子設計2011

    • Author(s)
      田中一生・中條善樹
    • Organizer
      第27回日本DDS学会学術集会
    • Place of Presentation
      東京大学
    • Year and Date
      2011-06-10
  • [Presentation] POSSを基盤とした新規機能性光学材料の構築Development of Functional Optical Materials Based on POSS2011

    • Author(s)
      田中一生・中條善樹
    • Organizer
      第60回高分子学会年次大会
    • Place of Presentation
      大阪
    • Year and Date
      2011-05-26
  • [Presentation] Construction of functional molecular imaging probes for quantitative analysis of biological events Kazuo Tanaka2011

    • Author(s)
      Yoshiki Chujo
    • Organizer
      International Conference on Biomaterials Science 2011(ICBS2011)
    • Place of Presentation
      筑波
    • Year and Date
      2011-03-17
  • [Presentation] Construction of MRI contrast agents using nanobuilding blocks, dendrimers, polymers, and nanoparticles2010

    • Author(s)
      Kazuo Tanaka, Yoshiki Chujo
    • Organizer
      PACIFICHEM2010
    • Place of Presentation
      Hawaii、USA
    • Year and Date
      2010-12-18
  • [Presentation] ナノビルディングブロックを基盤とした分子イメージング剤の合理的設計2010

    • Author(s)
      田中一生・中條善樹
    • Organizer
      第56回高分子研究発表会
    • Place of Presentation
      神戸
    • Year and Date
      2010-07-16
  • [Book] ヘテロ元素の特性を活かした新機能材料、かご型シルセスキオキサンを基盤とした機能性材料2010

    • Author(s)
      田中一生・中條善樹
    • Total Pages
      124
    • Publisher
      シーエムシー出版
    • URL

      http://www.cmcbooks.co.jp/products/detail.php?product_id=3295

  • [Remarks]

    • URL

      http://chujo.synchem.kyoto-u.ac.jp/index.cgi?page=%C5%C4%C3%E6%B0%EC%C0%B8%BD%F5%B6%B5%A4%CE%B6%C8%C0%D3%A5%EA%A5%B9%A5%C8

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Published: 2013-07-31  

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