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1994 Fiscal Year Final Research Report Summary

VUV Photo-reactions over Solid Surfaces studied by Techniques of Surface Science

Research Project

Project/Area Number 05650034
Research Category

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

Allocation TypeSingle-year Grants
Research Field 表面界面物性
Research InstitutionHokkaido University

Principal Investigator

SATO Shinri  Catalysis Research Center, Hokkaido University, Associate Professor, 触媒化学研究センター, 助教授 (70001724)

Project Period (FY) 1993 – 1994
KeywordsSurface photochemistry / Iron pentacarbonyl / photodecomposition / Surface spectroscopy / Reaction intermediate
Research Abstract

Surface photochemistry has been applied to the preraration of thin films of metal and semiconductor for microelectronics. The purpose of this study is to investigate a mechanism of the photodecomposition of iron pentacarbonyl(Fe(CO)_5, IPC)adsorbed on solid surfaces at low temperatures using IR reflection absorption spectroscopy, X-ray photoelectron spectroscopy, and thermal desorption spectroscopy, and to examine effects of the physical and chemical properties of solid surface on the reactions.The results are summarized as follows.
1.IPC is molecularly adsorbed on clean Ag, Au(111), and SiO_2 surfaces at tenperatures bellow 150K and undergoes photodecarbonylation upon irradiation with the light of wavelengths < 360nm.The photoproduct is the oligomer of Fe(CO)_4, which is quite stable under illumination but undergoes thermal decomposition at temperatures above 300K to deposit Fe metal on the surface. A mechanism of the thermal process depends on the catalytic properties of substrate surface.
2.The dependence of photo-decarbonylation yield on the wavelength of light was observed for Ag and Au substrates and found different from the absorption spectrum of gas phase IPC.On Ag surfaces the yield is maximized at around 320 nm, at which gaseous IPC shows little absorption, while on Au(111) the decarbonylation occurs at significant yield at around 320nm but exhibits no maximum yield in longer wavelength range. These results show that the adsorption of IPC on solid surfaces would lead to the red shift of absorption spectrum. In addition, the photoexcitation of Ag surface plasmon(3.88eV * 320nm)could cause the decarbonylation of adsorbed IPC.

  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] S.Sato: "Mechanism of the phctolysis of izon pentacarlonyl adsorbed on a pt surface" Surf.Sci.283. 137-142 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S.Sato: "Infrared reflection absorption spectriscopy,X-ray photoelection spectroscipy and Temperature-Programmed desorption study on the adsorption and decom pasition of Fe(CO)_5" J.Chem.SOC.Faraday Trans.89. 4387-4392 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y.Zhomg: "Buried metal layer enhanced infored reflection absorption spectriscopy for photoreations induced by synchrctron radiation on SiO_2 surfaces." Appl.Sarf.Sci.79/80. 422-427 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S.Sato: "Surface intermediotes formed during photolytic decarbonylation of iron peutacarbonyl adsorbed on silver sulface" Appl.Sarf.Sci.79/80. 428-433 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Urisu: "Moleculon orientation and photochemical reaction of organcalumimum compounds investigated by buried metal layer infrared reflection absorption spectioscopy" Jpn.J.Appl.Phys.33. 7123-7129 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S.Sato: "Photochemical dicdes of a TiO_2 film prepared by a sol-gel method" Catal.Lett.26. 141-147 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S.Sato: "Mechanism of the photolysis of iron pentacarbonyl adsorbed on a Pt surface" Surf.Sci.283. 137-142 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S.Sato: "Infrared reflection absorption spectroscopy, X-ray photoelectron spectroscopy and temperature-programd desorption study on the adsorption and decomposition of Fe(CO)_5 over silver surfaces" J.Chem.Soc.Faraday Trans.89. 4387-4392 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S.Sato: "Surface intermediates formed during photolytic decarbonylation of iron pentacarbonyl adsorbed on silver surfaces" Appl.Surf.Sci.79/80. 428-433 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y.Zhang: "Buried metal layr enhanced infrared reflection absorption spectroscopy for photoreactions induced by synchrotron radiation on SiO_s surfaces" Appl.Surf.Sci.79/80. 422-427 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Urisu: "Molecular orientation and photochemical reaction of organoaluminum compounds investigated by buried metal layr infrared reflection absorption spectroscopy" Jpn.J.Appl.Phys.33. 7123-7129 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S.Sato: "Photochemical diodes of a TiO_2 film prepared by a sol-gel method" Catal.Lett.26. 141-147 (1994)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1996-04-15  

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