Adsorption and reaction of 4-nitrobenzoic acid on omega-functionalized alkanethiol monolayers on powdered silver: Infrared and Raman spectroscopy study

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dc.contributor.authorHan, HSko
dc.contributor.authorHan, Sang Wooko
dc.contributor.authorKim, CHko
dc.contributor.authorKim, Kko
dc.date.accessioned2013-03-02T20:37:08Z-
dc.date.available2013-03-02T20:37:08Z-
dc.date.created2012-02-06-
dc.date.created2012-02-06-
dc.date.created2012-02-06-
dc.date.issued2000-02-
dc.identifier.citationLANGMUIR, v.16, no.3, pp.1149 - 1157-
dc.identifier.issn0743-7463-
dc.identifier.urihttp://hdl.handle.net/10203/75415-
dc.description.abstractWe have investigated the stability of w-functionalized alkanethiol monolayers anchored on 2 mu m-sized silver particles by means of infrared and Raman spectroscopy. Although the alkyl chains of dodecanethiol (DDT) monolayers were deduced to have a trans-zigzag conformation by diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS), those of 11-mercapto-1-undecanol (11-MUD) and 12-mercapto-1-dodecylamine (12-MDA) monolayers seemed to assume strongly disordered conformations on the powdered silver surface. We also found by DRIFTS that 4-nitrobenzoic acid (4-NBA) can be incorporated nearly equally into the hydrophilic(11-MUD and 12-MDA) and hydrophobic (DDT) group-terminated monolayers by forming Ag--COO- bond(s). This seemed to be best understood by presuming that the hydrophobic interchain interaction is less optimal on a microscopically rough surface than on a smooth surface when monolayers of 11-MUD and 12-MDA are assembled on Ag. It was also found by surface-enhanced Raman scattering (SERS) that photoreaction of 4-NBA more readily occurs at the 11-MUD-derivatized Ag particles than at the 12-MDA- and DDT- derivatized Ag particles. Invoking the role of water in such photoreactions, the hydroxyl-terminated monolayers appeared to be more labile to water than the amine-terminated monolayers. The present observations clearly illustrate that commercially available powdered silver is an efficient substrate for the characterization of self-assembled monolayers on silver substrates by the simultaneous use of DRIFTS and SERS.-
dc.languageEnglish-
dc.publisherAMER CHEMICAL SOC-
dc.titleAdsorption and reaction of 4-nitrobenzoic acid on omega-functionalized alkanethiol monolayers on powdered silver: Infrared and Raman spectroscopy study-
dc.typeArticle-
dc.identifier.wosid000085178900038-
dc.identifier.scopusid2-s2.0-0034620349-
dc.type.rimsART-
dc.citation.volume16-
dc.citation.issue3-
dc.citation.beginningpage1149-
dc.citation.endingpage1157-
dc.citation.publicationnameLANGMUIR-
dc.identifier.doi10.1021/la9908485-
dc.contributor.localauthorHan, Sang Woo-
dc.contributor.nonIdAuthorHan, HS-
dc.contributor.nonIdAuthorKim, CH-
dc.contributor.nonIdAuthorKim, K-
dc.type.journalArticleArticle-
dc.subject.keywordPlusSELF-ASSEMBLED MONOLAYERS-
dc.subject.keywordPlusPARA-NITROBENZOIC ACID-
dc.subject.keywordPlusGOLD-
dc.subject.keywordPlusSCATTERING-
dc.subject.keywordPlus1-ALKANETHIOLS-
dc.subject.keywordPlusSURFACES-
dc.subject.keywordPlusSPECTRA-
dc.subject.keywordPlusAG-
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