Template-free synthesis of organically modified silica mesoporous thin films for TNT sensing

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buir.contributor.authorBayındır, Mehmet
buir.contributor.authorGüler, Mustafa O.
dc.citation.epage2897en_US
dc.citation.issueNumber10en_US
dc.citation.spage2892en_US
dc.citation.volumeNumber2en_US
dc.contributor.authorYildirim, A.en_US
dc.contributor.authorBudunoglu, H.en_US
dc.contributor.authorDeniz, H.en_US
dc.contributor.authorGüler, Mustafa O.en_US
dc.contributor.authorBayındır, Mehmeten_US
dc.date.accessioned2016-02-08T09:56:23Z
dc.date.available2016-02-08T09:56:23Z
dc.date.issued2010en_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.departmentDepartment of Physicsen_US
dc.description.abstractIn this paper, we present a facile, template-free sol−gel method to produce fluorescent and highly mesoporous organically modified silica (ORMOSIL) thin films for vapor phase sensing of TNT. An alkyltrifunctional, methyltrimethoxysilane MTMS precursor was used to impart hydrophobic behavior to gel network in order to form the spring back effect. In this way, porous films (up to 74% porosity) are obtained at ambient conditions. Fluorescent molecules are physically encapsulated in the ORMOSIL network during gelation. Fluorescence of the films was found to be stable even after 3 months, proving the successful fixing of the dye into the ORMOSIL network. The functional ORMOSIL thin films exhibited high fluorescence quenching upon exposition to TNT and DNT vapor. Fluorescence quenching responses of the films are thickness-dependent and higher fluorescence quenching efficiency was observed for the thinnest film (8.6% in 10 s). The prepared mesoporous ORMOSIL thin films have great potential in new sensor and catalysis applications.en_US
dc.identifier.doi10.1021/am100568cen_US
dc.identifier.issn1944-8252
dc.identifier.urihttp://hdl.handle.net/11693/22165
dc.language.isoEnglishen_US
dc.publisherAmerican Chemical Societyen_US
dc.relation.isversionofhttp://dx.doi.org/10.1021/am100568cen_US
dc.source.titleACS Applied Materials and Interfacesen_US
dc.subjectfluorescence quenchingen_US
dc.subjectmesoporous materialsen_US
dc.subjectORMOSILen_US
dc.subjectthin filmsen_US
dc.subjectTNT detectionen_US
dc.subjectAmbient conditionsen_US
dc.subjectFluorescence quenchingen_US
dc.subjectFluorescent moleculesen_US
dc.subjectGel networksen_US
dc.subjectMesoporousen_US
dc.subjectMesoporous thin filmsen_US
dc.subjectMethyltrimethoxysilaneen_US
dc.subjectOrganically modified silicaen_US
dc.subjectORMOSILen_US
dc.subjectPorous filmen_US
dc.subjectSol-gel methodsen_US
dc.subjectSpring backen_US
dc.subjectTemplate-freeen_US
dc.subjectTNT detectionen_US
dc.subjectVapor Phaseen_US
dc.subjectCoagulationen_US
dc.subjectExplosives detectionen_US
dc.subjectFluorescenceen_US
dc.subjectGelationen_US
dc.subjectGelsen_US
dc.subjectQuenchingen_US
dc.subjectSilicaen_US
dc.subjectSol-gel processen_US
dc.subjectThin filmsen_US
dc.subjectVaporsen_US
dc.subjectMesoporous materialsen_US
dc.titleTemplate-free synthesis of organically modified silica mesoporous thin films for TNT sensingen_US
dc.typeArticleen_US

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Institute of Materials Science and Nanotechnology (UNAM)
Department of Physics