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Development of Fourier Transform Ultraviolet. Visible. Near-Infrared Raman Spectroscopy and its Application to Structural Chemistry

Research Project

Project/Area Number 01430004
Research Category

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

Allocation TypeSingle-year Grants
Research Field 構造化学
Research InstitutionThe University of Tokyo

Principal Investigator

TASUMI Mitsuo  Faculty of Science, The University of Tokyo, Professor, 理学部, 教授 (60011540)

Co-Investigator(Kenkyū-buntansha) FURJKAWA Yukio  Faculty of Science, The University of Tokyo, Lecturer, 理学部, 講師 (50156965)
HAYASHI Hidenori  National Institute for Basic Biology, Associate Professor, 助教授 (60124682)
Project Period (FY) 1989 – 1990
Project Status Completed (Fiscal Year 1990)
Budget Amount *help
¥18,000,000 (Direct Cost: ¥18,000,000)
Fiscal Year 1990: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1989: ¥17,000,000 (Direct Cost: ¥17,000,000)
KeywordsFourier Transform Raman Spectroscopy / Conducting Polymer / Polyacetylene / Poly(para-phenylenevinylene) / Photosynthetic Bacteria / Bacteriochlorophyll a / 構造化学
Research Abstract

Fourier transform (FT) Raman spectrophotometer with 1064 nm excitation is constructed. Resonance Raman spectra of conducting polymers and photosynthetic pigments are studied.
(1) Construction of 1064 nm excited FT-Raman spectrophotometer
An FT-Raman spectrophotometer consists mainly of FT-NIR spectrophotometer (JEOL JIR-5500) with an InGaAs detector, continuous-wave Nd : YAG laser (CVI YAGMAX C-92), optics for collecting scattered light, filters for rejection of Rayleigh scattering, etc.
(2) Conducting polymers
Resonance Raman spectra of trans-polyacetylene (PA) films doped with iodine or Na and poly (para-phenylenevinylene) (PPV) films doped with H_2SO_4 or Na are obtained with 1064 nm excitation. As Na content of Na-doped PA increases, two spectral changes corresponding to the increase of electrical conductivity and the appearance of Pauli susceptibility are observed. Raman spectra of Na-doped PPV are ascribed to negative bipolarons on the basis of the data of the divalent anion of an appropriate oligomer.
(3) Photosynthetic pigments
The 1064 nm excited Raman spectra of bacteriochlorophyll a (BChl a) in various solid films and in chromatophores from a blue-green mutant of Rhodobacter sphaeroides are obtained. Molecular interactions and arrangements of Bchla are discussed on the basis of the C=O stretching wavenumber and CC stretches which are marker bands of the coordination number of central Mg.

Report

(3 results)
  • 1990 Annual Research Report   Final Research Report Summary
  • 1989 Annual Research Report
  • Research Products

    (3 results)

All Other

All Publications (3 results)

  • [Publications] Y.Furukawa,Y.Imai,H.Ohta,and M.Tasumi: "Infrared Spectra of A Ti(OーnーBu)_4ーAlEt_3 Catalyst and Vibrational Spectra of HighlyーConducting Polyacetylene" Synthetic Metals.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Y. Furukawa, Y. Imai, H. Ohta, and M. Tasumi: ""Infrared Spectra of Ti(O-n-Bu)_4-AlEt_3 Catalyst and Vibrational Spectra of Highly-Conducting Polyacetylene"" Synthetic Metals.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Y.Furukawa,Y.Imai,H.Ohta,and M.Tasumi: "Infrared Spectra of A Ti(OーnーBu)_4ーAlEt_3 Catalyst and Vibrational Spectra of HighlyーConducting Polyacetylene" Synthetic Metals.

    • Related Report
      1990 Annual Research Report

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Published: 1989-04-01   Modified: 2016-04-21  

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