Study by SERS spectroscopy of the adsorption of 1H-1,2,4-triazole-3-thione on silver sols

Surface enhanced Raman scattering (SERS) spectra of 1H-1,2,4-triazole-3-thione (TAS) adsorbed on silver sols were recorded. From the comparison between the SERS and normal Raman spectra of TAS in aqueous and in NaOH solutions, it can be deduced that the substance adsorbs in the ionized thiolic form...

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Bibliographic Details
Published inJournal of molecular structure Vol. 651; pp. 349 - 352
Main Authors Pergolese, Barbara, Bigotto, Adriano
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.06.2003
Subjects
1H-1,2,4-triazole-3-thione
Adsorption
Silver
Surface enhanced Raman scattering
Silver
1H-1,2,4-triazole-3-thione
Adsorption
Surface enhanced Raman scattering
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Summary:Surface enhanced Raman scattering (SERS) spectra of 1H-1,2,4-triazole-3-thione (TAS) adsorbed on silver sols were recorded. From the comparison between the SERS and normal Raman spectra of TAS in aqueous and in NaOH solutions, it can be deduced that the substance adsorbs in the ionized thiolic form (TASA) on the silver surface. From the description of the vibrational normal modes related to the most enhanced bands in the SERS spectra, it can be deduced that the interaction with the silver sol occurs via the lone pairs of the sulphur and of one of the nitrogen atoms and that the orientation of the tetrazole ring is inclined with respect to the metal surface.
ISSN:0022-2860
1872-8014
DOI:10.1016/S0022-2860(02)00650-6