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Study of Photophysical Process and Photocatalytic Activity of Anchored Catalyst Prepared by thev Sol-Gel Method

Research Project

Project/Area Number 02805099
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 工業物理化学・複合材料
Research InstitutionShinshu University

Principal Investigator

FUJII Tsuneo  Shinshu University, Fac. Engi., Assoc. Professore, Col. Engi., Professor, 工学部, 助教授 (10092892)

Co-Investigator(Kenkyū-buntansha) ANPO Masakazu  Univ. Osaka Prefecture, Col. Engi., Professor, 工学部, 教授 (70094498)
Project Period (FY) 1990 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 1991: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1990: ¥1,300,000 (Direct Cost: ¥1,300,000)
KeywordsSol-Gel Method / Mixed Metal Oxides / Photocatalyst / Photophysics / Anchored Catalyst / Fluorescence Spectra / Photo CVD / Photoprobe / 蛍光スペクトル / 光CVD
Research Abstract

The absortion, fluorescence, and fluorescence-excitation spectra of some aromatic photoprobe molecules(l-naphthol, benzoqunolines, rhodamine VB, fluorescein, and pyrene)have been observed along with the progress of the sol-gel reaction of SI-AI and Si-Ti mixed alkoxides. The spectral changes during the sol-gel process reflected the changes of the polarity, microviscosity, and other chemical and physical properties around the photoprobes of the reaction specimes. In a case of small fraction of AI, gelation occurred relatively slow and polarity and microviscosity around the photoprobe molecules increased relatively fast. On the other hand, the reverse chemical and physical phenomena are observed in a case of large fraction of AI. In a case of acid catalyst, hydrolysis proceeded fast and the rate determing reaction is condensation step. On the other hand, in a case of basic catalyst, the condensation proceeds fast and the rate determining step is hydrolysis. Observation of the fluorescence spectra of aromatic molecules is a useful photophysical and photochemical probe for studying the sol-gel-xerogel transition of metal alkoxides on a molecular level.
The thermal stability, similar to the photostability, of aromatic molecules encapsulated in xerogel state prepared by the sol-gel method is one of the important point for the utility of functional materials. We found that the encapsulated rhodamine B and fluorescein molecules have increased thermal stability than in air circumstance. This enhancement can be sttributed to the prevention of the permeation of oxygen into the pores of the prepared silica gel.
Excimer-like fluorescence of pyrene during the sol-gel reaction disappeared before gelation, but the fluorescence intensity became strong in encapsulated state into pores of the Si-Ti and SI-AI. This striking phenomenon can be attributable to the adsorption of two molecules at Ti site and 1 : 1 complex formation between aromatic molecules and AI.

Report

(3 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • Research Products

    (33 results)

All Other

All Publications (33 results)

  • [Publications] Tsuneo FUJII,Akira ISHII,and Masakazu ANPO: "Absorption and Fluorescence Spectra of Rhodamine B Molecules Encapsulated in Silica Gel Networks and Their Thermal Stability" J.Photochem.Photobiol.A:Chem.,. 54. 231-237 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T.FUJII,O.KAWAUCHI,Y.KURIHARA,A.ISHIIN.NEGISGISHI,and M.ANPO: "Enhancement of Thermal Stability of Fluorescein Molecules Encapsulated into Silica Gel Notworks by Sol-Gel Method" Chem.Express,. 5. 917-920 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T.FUJII,H.KITAMURA,S.KAWAUCHI,T.MABUCHI and N.NEGISHI: "Study of 1-Naphthol as a Fluorescent Probe for the Sol to Gel to Xerogel Reaction of Mixed Sluminium and Silicon Systems" J.Photochem.Photobiol.A:Chem.,. 61. 365-372 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Tsuneo FUJII,Akira ISHII,and Masakazu ANPO: "Fluorescence Spectra and Chemical Sopecies of Fluorescein Molecules Adsorbed in a Calcinated Vycor Glass" Res.Chem.Intermed.,. 17. 1-17 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Tsuneo FUJII and Hirofumi MIYOSHI: "Quenching of Monomer and Excimer Fluorescences of Pyrene by NaI Adsorbed on Filter Paper" Chem.Express,. 6. 451-454 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Tsuneo FUJII,Hirofumi MIYOSHI and Kyouichi OKI: "Monomer and Excimer-like Fluorescence Quenching of Pyrene by Alkali Halides Adsorbed on Filter Paper" Chem.Express,. 7. 5-8 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T.FUJII,T.MABUCHI H.KITAMURA,O.KAWAUCHI,N.NEGISHI and M.ANPO: "Fluorescence Spectra of 1-Naphthol During the Sol-Gel Process of a Mixed Aluminum-Silicon Alkoxide (Si:Al = 94:6)" Bull.Chem.Soc.Jpn.,. 65. (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T.FUJII,H.YAMAMOTO Y.Yobiko and M.ANPO: "Fluorescence Spectra of Methyl Salicylate Along Sol-Gel Transition of Si-Al Mixed Metal Alkoxides"

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] N.NEGISHI,M.ANPO,T.FUJII and K.MURAYAMA: "Abnormal Changes of Fluorescence Spectra of Pyrene in Si-Ti Binary systems During Their Sol- Gel- Xerogel Transition"

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T.FUJII: "Encapsulation of Organic Dyes by Sol-Gel Method and Preparation of Solid State Dye-Laser"

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T. FUJII, A. ISHII, and M. ANPO: "Absorption and Fluorescence Spectra of Rhodamine B Molecules Encapsulated in Silica Gel Networks and Theri Thermal Stability" J. Photochem. Photobiol. A : Chem.17. 231-237 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T. FUJII, O. KAWAUCHI, Y. KURIHARA, A. ISHII N. NEGISHI, and M. ANPO: "Enhancement of Termal Stability of Fluorecein Molecules Encapsulated into Silica Gel Networks by Sol-Gel Method" Chem. Express.5. 917-920 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T. FUJII, H. KITAMURA, S. KAWAUCHI, T. MABUCHI, and N. NEGISHI: "Study of 1-Naphthol as a Fluorescent Probe for the Sol to Gel to Xerogel Reaction of Mixed Aluminium Silicaon Systems" J. Photochem. Photobiol. A : Chem.61. 365-372 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T. FUJII, A. ISHII, and M. ANPO: "Fluorescence Spectra and Chemical Species of Fluorescein Molecules Adsorbed in a Calcinated Vycor Glass" Res. Chem. Intermed.17. 1-17 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T. FUJII and H. MIYOSHI: "Quenching of Monomer and Excimer Fluorescences of Pyrene by NaI Adsorbed on Filter Paper" Chem. Express. 6. 451-454 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T. FUJII, H. MIYOSHI, and K. OKI: "Monomer and Excimer-like Fluorescence Quenching of Pyrene by Alkali Halides Adsorbed on Filter Paper" Chem. Express. 7. 5-8 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T. FUJII, T. MABUCHI, H. KITAMURA, O. Kawauchi, N. NEGISHI, and M. ANPO: "Fluorescence Spectra of 1-Naphthol During the Sol-Gel Process of a Mixed Aluminum-silicon Mixed Metal Alkoxides" Bull. Chem. Soc. Jpn.65(3). (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T. FUJII, H. YAMAMOTO, Y. YOBIKO, and M. ANPO: "Fluorescence Spectra of Methyl Salicylate Along Sol-Gel Transition of Si-Al Mixed Metal Alkoxides"

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] N. NEGISHI, M. ANPO, T. FUJII, and K. MURAYAMA: "Abnormal Changes of Fluorescence Spectra of Pyrene in Si-Ti Binary Systems During Their Sol-Gel- Xerogel Transition"

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T. FUJII: "Encapsulation of Organic Dyes by Sol-Gel Method and Preparation of Solid State Dye-Laser"

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Tsuneo FUJII,Akira ISHII,Masakazu ANPO: "Absorption and Fluorescence Spectra of Rhodamine B Molecules Encapsulated in Silica Gel Networks and Their Thermal Stability" J.Photochem.Photobiol.A:Chem.54. 231-237 (1990)

    • Related Report
      1991 Annual Research Report
  • [Publications] T.FUJII,O.KAWAUCHI,Y.KURIHARA,A.ISHI,N.NEGISHI,M.ANPO: "Enhancement of Thermal Stability of Fluorescein Molecules Encapsulated into Silica Gel Networks by SolーGel Method" Chem.Express. 5. 917-920 (1990)

    • Related Report
      1991 Annual Research Report
  • [Publications] T.FUJII,H.KITAMURA,S.KAWAUCHI,T.MABUCHI,N.NEGISHI: "Study of 1ーnaphthol as a Fluorescent Probe for the Sol to Gel to Xerogel Reaction of Mixed Aluminium and Silicon Systems" J.Photochem.Photobiol.A:Chem.61. 365-372 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Tsuneo FUJII,Akira ISHII,Masakazu ANPO: "Fluorescence Spectra and Chemical Species of Fluorescein Molecules Adsorbed in a Calcinated Vycor Glass" Res.Chem.Intermed.17. 1-17 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Tsuneo FUJII,Hirofumi MIYOSHI: "Quenching of Monomer and Excimer Fluorescences of Pyrene by NaI Adsorbed on Filter Paper" Chem.Express. 6. 451-454 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Tsuneo FUJII,Hirofumi MIYOSHI,Kyoichi OKI: "Monomer and Excimerーlike Fluorescence Quenching of Pyrene by Alkali Halides Adsorbed on Filter Paper" Chem.Express. 7. 5-8 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] T.FUJII,T.MABUCHI,H.KITAMURA,O.KAWAUCHI,N.NEGISHI,M.ANPO: "Fluorescence Spectra of 1ーNaphtol During the SolーGel Process of a Mixed AluminumーSilicon Alkoxide(Si:Al=94:6)" Bull.Chem.Soc.Jpn.,. 65. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] T.FUJII,H.YAMAMOTO,Y.YOBIKO,M.ANPO: "Fluorescence Spectra of Methyl Salicylate Along SolーGel Transition of SiーAl Mixed Metal Alkoxides"

    • Related Report
      1991 Annual Research Report
  • [Publications] N.NEGISHI,M.ANPO,T.FUJII,and K.MURAYAMA: "Abnormal Changes of Fluorescence Spectra of Pyrene in SiーTi Binary Systems During Their SolーGelーXerogel Transition"

    • Related Report
      1991 Annual Research Report
  • [Publications] 藤井 恒男: "ゾルゲル法による有機分子のカプセル化と固体色素レ-ガの調整" 表面. 30. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] T.Fujii,A.lshii and M.Anpo: "Absorp and fluoresceno speclto of shodamine B meleaules encapnulated in silica gel netwrks and their thermal stalri lety" J.Phato chem Pheto brol.,A.Chemistry. 54. 231-237 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] T.Fujii,O.Kawauchi,Y.Kurihara,A.lshii,N.Negishi,and M.Anpo: "Enhawement of thermel staleloty of bluoresceim meleaules encapnulated is selica gel netwrks by sclーgcl method." Chem.Express,. 5. 917-920 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] T.Fujii,H.Katamura,O,Kawauchi,T.Mabuchi,and N.Negishi: "Fluors cemcl speotts of 1ーnephthal poolining sal to gel to xaogel uaction of (Si+Al)mlxed alkoxide by Hcl Cato lyst"

    • Related Report
      1990 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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