Adsorption of 1,4-benzenedithiol on gold and silver surfaces: Surface-enhanced Raman scattering study

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dc.contributor.authorJoo, SWko
dc.contributor.authorHan, Sang Wooko
dc.contributor.authorKim, Kko
dc.date.accessioned2013-03-04T18:29:34Z-
dc.date.available2013-03-04T18:29:34Z-
dc.date.created2012-02-06-
dc.date.created2012-02-06-
dc.date.created2012-02-06-
dc.date.issued2001-08-
dc.identifier.citationJOURNAL OF COLLOID AND INTERFACE SCIENCE, v.240, no.2, pp.391 - 399-
dc.identifier.issn0021-9797-
dc.identifier.urihttp://hdl.handle.net/10203/83634-
dc.description.abstractThe adsorption behavior of 1,4-benzenedithiol (1,4-BDT) on colloidal gold and silver surfaces has been investigated by means of surface-enhanced Raman scattering (SERS). 1,4-BDT chemisorbed dissociatively on both gold and silver surfaces but as mono- and dithiolate, respectively. Regardless of the bulk concentration of 1,4-BDT, only a monolayer was assembled on the silver surface with a flat orientation by forming two Ag-S bonds. On the gold surface, the monothiolate species, 1,4-BDT-1, appeared to assume a rather flat orientation at a very low surface coverage, but as the surface coverage was increased, the adsorbate took a perpendicular orientation. Furthermore, when the bulk concentration of 1,4-BDT was close to that required for a full-monolayer coverage limit, a band assignable to the S-S stretching vibration appeared at similar to 536 cm(-1) in the gold sol SERS spectra. A separate ellipsometry measurement performed with vacuum-evaporated gold substrates revealed that up to tetralayers could be assembled on gold in 1 mM n-hexane solution of 1,4-BDT while at best a bilayer formed in either methanol or ethanol solution. The different adsorbate structure of 1,4-BDT on gold and silver was overall quite comparable to that of p-xylene-alpha,alpha ' -dithiol. (C) 2001 Academic Press.-
dc.languageEnglish-
dc.publisherACADEMIC PRESS INC-
dc.titleAdsorption of 1,4-benzenedithiol on gold and silver surfaces: Surface-enhanced Raman scattering study-
dc.typeArticle-
dc.identifier.wosid000170513300003-
dc.identifier.scopusid2-s2.0-0035880758-
dc.type.rimsART-
dc.citation.volume240-
dc.citation.issue2-
dc.citation.beginningpage391-
dc.citation.endingpage399-
dc.citation.publicationnameJOURNAL OF COLLOID AND INTERFACE SCIENCE-
dc.identifier.doi10.1006/jcis.2001.7692-
dc.contributor.localauthorHan, Sang Woo-
dc.contributor.nonIdAuthorJoo, SW-
dc.contributor.nonIdAuthorKim, K-
dc.type.journalArticleArticle-
dc.subject.keywordAuthor1,4-benzenedithiol-
dc.subject.keywordAuthorAg-
dc.subject.keywordAuthorAu-
dc.subject.keywordAuthoradsorption-
dc.subject.keywordAuthorSERS-
dc.subject.keywordAuthorellipsometry-
dc.subject.keywordPlusSELF-ASSEMBLED MONOLAYERS-
dc.subject.keywordPlusTRANSFORM INFRARED-SPECTROSCOPY-
dc.subject.keywordPlusQUARTZ-CRYSTAL MICROBALANCE-
dc.subject.keywordPlusELLIPSOMETRY-
dc.subject.keywordPlus1,8-OCTANEDITHIOL-
dc.subject.keywordPlus1,2-ETHANEDITHIOL-
dc.subject.keywordPlusALKANETHIOL-
dc.subject.keywordPlusMULTILAYERS-
dc.subject.keywordPlusMOLECULES-
dc.subject.keywordPlusSTABILITY-
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