By the same authors

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A surface-enhanced Raman spectroscopic study of novel photochromic benzodithiacrown ether styryl dyes

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Author(s)

  • M V Alfimov
  • Y V Fedorov
  • O A Fedorova
  • S P Gromov
  • R E Hester
  • I K Lednev
  • John N. Moore
  • V P Oleshko
  • A I Vedernikov

Department/unit(s)

Publication details

JournalSPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
DatePublished - 1 Oct 1997
Issue number11
Volume53
Number of pages13
Pages (from-to)1853-1865
Original languageEnglish

Abstract

Surface-enhanced Raman scattering (SERS) and surface-enhanced resonance Raman scattering (SERRS) spectra of two benzothiazolium styryl dyes containing a crown ether ring with sulfur and oxy obtained at low concentration (10(-5)-10(-7) M) in the presence of silver colloids. A preliminary assignment of the observed bands to particular vibrational modes has been made by comparison of infrared (IR), normal Raman (R) and SERS data obtained from thiacrown ether and benzothiazolium molecular fragments with SERRS spectra of a benzothiazolium styryl dye containing a normal crown ether ring and with assignments reported previously for related molecules. The results indicate that the sulfur atoms of both the benzothiazolium and the dithiacrown ether groups participate in adsorption at the silver surface; possible models of adsorption of these dyes and their fragments are discussed. (C) 1997 Elsevier Science B.V.

    Research areas

  • benzothiazolium, crown ether, dye, Raman spectra, surface-enhanced Raman scattering, surface-enhanced resonance Raman scattering, MOLECULAR SPACER, SILVER, SCATTERING, COMPLEXES, SPECTRA

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