• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

生体界面現象解明に向けたケージド化合物の合成と光機能

Research Project

Project/Area Number 15033211
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionUniversity of Tsukuba

Principal Investigator

新井 達郎  筑波大学, 大学院・数理物質科学研究科, 教授 (50151139)

Project Period (FY) 2003 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥5,400,000 (Direct Cost: ¥5,400,000)
Fiscal Year 2004: ¥2,700,000 (Direct Cost: ¥2,700,000)
Fiscal Year 2003: ¥2,700,000 (Direct Cost: ¥2,700,000)
Keywords界面 / ケージド化合物 / 光機能 / 光分解 / 励起状態 / レーザー / ナノ材料 / 生体材料 / 光スイッチ / 複合材料・物性 / 分子認識 / 光反応ダイナミクス
Research Abstract

本研究では、分子機能の光制御と複合化について生体系と関連させた研究を行い、以下の成果を得た。
1)巨大分子の合成と光機能:巨大分子の光化学は、視覚における光情報の確認と伝達の観点から興味深い。このような観点から、光応答性巨大分子(デンドリマー)および関連化合物を合成した。水溶性のデンドリマーは内部が疎水的であり、外部に親水基を有するため水に可溶である。疎水部として蛍光性、光応答性の部位を導入し、外側の親水基により水溶性となった分子では、内部の疎水部の特異な光機能性がいくつか観測された。例えば、アゾベンゼンを中心部に有する水溶性のデンドリマーは、集合・解離および光異性化・熱異性化がデンドリマーの世代の効果を著しく受けた。スチルベン骨格を中心部に有するデンドリマーでは、トランス体は紫色の蛍光を発するが、光異性化により生成したシス体は、蛍光を発しなくなる。親水・疎水界面の効果で光反応が特異的な方向にのみ進行すること、中心の二重結合の異性化を巨大分子全体の構造変化として増幅できる可能性、蛍光性から無蛍光性に完全に変化可能であるなど水溶性の巨大分子の光による構造変化を新しい機能に展開可能な成果を得た。
2)核酸塩基系の蛍光観測:グアニンと芳香環としてフェナントレンやピレンを共有結合により連結した化合物をいくつか合成した。これらの化合物では、芳香環部位の蛍光が分子内のグアニン部により消光され、新たに、エキシプレックスの発光が観測された。核酸塩基が関与した発光は報告例が極めて少なく、また、分子間水素結合を活用したDNAの塩基配列診断試薬への応用可能と考え、現在、研究を進展させている。さらに、グアニンと相補塩基対を含む系の発光挙動についても明らかにした。
3)ケージド化合物の合成と光機能:生体内機能に重要な、cAMPや各種イオンの取り込みと放出を目ざしていくつかの化合物を合成し、光機能性について顕著な成果を得た。

Report

(2 results)
  • 2004 Annual Research Report
  • 2003 Annual Research Report
  • Research Products

    (34 results)

All 2005 2004 Other

All Journal Article (16 results) Publications (18 results)

  • [Journal Article] Inhibition of the formation and decay of stilbene core radical cations by the dendron during the photoinduced electron transfer2005

    • Author(s)
      Tatsuo Arai
    • Journal Title

      J.Phys.Chem.B 109

      Pages: 973-976

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Unusual Solvatochromism Based on Intramolecular Hydrophobic Interaction in Water-soluble Azobenzene Dendrimers2005

    • Author(s)
      Tatsuo Arai
    • Journal Title

      Chem.Lett 34

      Pages: 310-311

    • NAID

      10014464053

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Photochromism, thermochromism, and solvatochromism of naph-thalene-based analogues of salicylideneaniline in solution2004

    • Author(s)
      Tatsuo Arai
    • Journal Title

      J.Photochem.Photobiol A : Chem. 102

      Pages: 473-479

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Photochemical reaction of α-bromoacetylarenes studied by product analysis and laser flash photolysis2004

    • Author(s)
      Tatsuo Arai
    • Journal Title

      Bull.Chem.Soc.Jpn. 77

      Pages: 801-806

    • NAID

      10012849420

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Photochemical Specific Isomerization of Dendritic Stilbene with Unusual Direction2004

    • Author(s)
      Tatsuo Arai
    • Journal Title

      Bull.Chem.Soc.Jpn. 77

      Pages: 1195-1200

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Water-soluble azobenzene dendrimers2004

    • Author(s)
      Tatsuo Arai
    • Journal Title

      Tetrahedron Lett. 45

      Pages: 4131-4134

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Exciplex Formation Between Pyrene and Guanine in Highly Polar Solvent2004

    • Author(s)
      Tatsuo Arai
    • Journal Title

      Chem.Commun. 7

      Pages: 824-825

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Dynamic process of the photo-chemically produced flavin radicals in a neutral micelle studied by a magnetic field effect2004

    • Author(s)
      Tatsuo Arai
    • Journal Title

      Chem.Phys.Lett. 394

      Pages: 345-348

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Photoinduced hydrogen atom transfer and trans-cis isomerization of the C=C double bond in 2'-hydroxychalcone analogues studied by nanosecond time-resolved infrared spectroscopy2004

    • Author(s)
      Tatsuo Arai
    • Journal Title

      Bull.Chem.Soc.Jpn. 77

      Pages: 1529-1535

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Dynamics of Water-Soluble Stilbene Dendrimers upon Photoisomerization2004

    • Author(s)
      Tatsuo Arai
    • Journal Title

      J.Phys.Chem.B 108

      Pages: 12783-12789

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Water-soluble Dendrimers as a Potential Fluorescent Detergent to Form Novel Micelles at Very Low CMC2004

    • Author(s)
      Tatsuo Arai
    • Journal Title

      Tetrahedron Lett. 45

      Pages: 8515-8518

    • Related Report
      2004 Annual Research Report
  • [Journal Article] A new fluorescent metal sensor with two chelating moieties2004

    • Author(s)
      Tatsuo Arai
    • Journal Title

      Tetrahedron Lett. 45

      Pages: 9377-9381

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Synthesis and photochemical properties of porphyrinazobenzene Triad2004

    • Author(s)
      Tatsuo Arai
    • Journal Title

      Tetrahedron Lett. 45

      Pages: 9219-9223

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Effects of benzyl-ether type dendrons as hole-harvesting antennas and shielding for the neutralization of stilbene core radical cations with chloride ion during two-photon ionization of stilbene dendrimers having stilbene core and benzyl-ether type dendrons2004

    • Author(s)
      Tatsuo Arai
    • Journal Title

      J.Am.Chem.Soc. 126

      Pages: 14217-14223

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Photochemistry and photophysics of stilbene dendrimers and related compounds2004

    • Author(s)
      Tatsuo Arai
    • Journal Title

      J.Photochem.Photobiol.C : Reviews 5

      Pages: 1-25

    • NAID

      10013129071

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Synthesis, excited state properties, and dynamic structural change of photoresponsive dendrimers2004

    • Author(s)
      Tatsuo Arai
    • Journal Title

      Polymer 45

      Pages: 5369-5390

    • Related Report
      2004 Annual Research Report
  • [Publications] Tatsuo Arai: "Photoinduced hydrogen atom transfer in trans-1-(1'-hydroxy-2'-naphthyl)-3-(1-naphthyl)-2-propen-1-one"Photochem.Photobiol.Sci.. 2. 402-406 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Tatsuo Arai: "Study on Triplet State Behaviors of Pyrrole-2-carboxyaldehyde and Its Related Compounds"Photochem.Photobiol.Sci.. 2. 418-423 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Tatsuo Arai: "Photochemical cyclization reaction in cis-tetramethoxystilbene"J.Photochem.Phtobiol.A : Chem.. 158. 7-12 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Tatsuo Arai: "Quantum Chemical Studies on Photoinduced Cis-Trans Isomerization and Intramolecular Hydrogen Atom Transfer of 2'-Hydroxychalcone"J.Phys.Chem.A. 107. 8659-8664 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Tatsuo Arai: "An effect of Coulomb interaction on the dynamics of the radical pair in the system of flavin mononucleotide and Henn Egg White Lysozyme (HEWL) studied by a magnetic field effect"J.Phys.Chem.B. 107. 6474-6478 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Tatsuo Arai: "1,3,5-Tristyrylbenzene Dendrimers : A Novel Model System to Explore Oxygen Quenching in Highly Organized Environment"Org.Biomol.Chem.. 1. 1635-1637 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Tatsuo Arai: "Photochemical study on hydrophobic properties in water-soluble dendritic molecules"Chem.Lett.. 32. 1008-1009 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Tatsuo Arai: "Dimerization by hydrogen bonding and photochemical properties of bis-pyridone"J.Phys.Chem.A. 107. 10039-10045 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Tatsuo Arai: "Hydrogen Bonded Molecular Assembly by Reversible Cyclization Reaction of Anthracene"Chem Commun.. 1566-1567 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Tatsuo Arai: "Synthesis and Isomerization of Azobenzene Dendrimers"Photochem.Photobiol.Sci.. 2. 845-847 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Tatsuo Arai: "Mechanistic approach to the control of the cyclization reaction of a 2'-hydroxychalcone analogue with light and solvent"Org.Biomol.Chem.. 1. 2041-2043 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Tatsuo Arai: "The photochemical characteristics of aromatic enediyne compounds substituted with electron donating and electron withdrawing groups"Org.Biomol.Chem.. 1. 2655-2660 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Tatsuo Arai: "Photoisomerization and Isomer-Specific Water Addition Reaction in Hydroxystilbenes"Photochem.Photobiol.Sci.. 2. 1247-1249 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Tatsuo Arai: "Energy releasing and conformational dynamics of stilbene dendrimers upon photo-isomerization"J.Phys.Chem.A. 107. 6515-6521 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Tatsuo Arai: "Photoisomerization and Fluorescence Properties of Hemiindigo Compounds Having Intramolecular Hydrogen Bonding"Bull.Chem.Soc.Jpn.. 76. 1783-1792 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Tatsuo Arai: "生体分子ビリルビンの光化学反応-光の作用による分子の構造変化を、水-有機溶媒分配系で視覚化する-"化学と教育. 51. 567-568 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Tatsuo Arai: "A new class of azobenzene chelators for Mg^<2+> and Ca^<2+> in buffer at physiological pH"Tetrahedron Lett.. 44. 7277-7280 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Tatsuo Arai: "Photoisomerization and Fluorescence Behavior of Polyphenylene Based Stilbene Dendrimers"Photochem.Photobiol.Sci.. 2. 1181-1186 (2003)

    • Related Report
      2003 Annual Research Report

URL: 

Published: 2003-04-01   Modified: 2018-03-28  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi