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dc.contributor.authorYilmaz, E.en_US
dc.contributor.authorErtas, G.en_US
dc.contributor.authorBengu, E.en_US
dc.contributor.authorSüzer, Şefiken_US
dc.date.accessioned2016-02-08T09:56:06Z
dc.date.available2016-02-08T09:56:06Z
dc.date.issued2010en_US
dc.identifier.issn-1932
dc.identifier.urihttp://hdl.handle.net/11693/22142
dc.description.abstractPhotopatterning of poly(methyl methacrylate) (PMMA) films is performed by UV irradiation of the polymer films containing uniformly distributed AuCl 4 - ions. The process reduces the gold ions and leads to production of Au nanoparticles in the irradiated regions at room temperature (RT). Resulting films are investigated with scanning electron microscopy, which revealed, in addition to regions with gold nanoparticles, the presence of "ion-depleted regions". These regions are formed at RT and within the rigid polymer matrix by diffusion of gold ions toward the irradiated regions, ending up with no or very little gold moieties, which are important for prevention of delayed processes for postgeneration of unwanted features, if and when such materials are utilized for device production. Further investigations performed by fluorescence and Raman measurements and XPS mapping give additional evidence supporting the existence of such regions. Similar regions are also observed within the poly(vinyl alcohol) (PVAL) films. The ion-depleted regions are about 10 μm wide, which is a significant length for the metal ions to travel through a rigid matrix like PMMA (or PVAL) at room temperature and raises important questions as to the diffusion mechanism(s) of the metal ions and to the nature of the driving force(s).en_US
dc.language.isoEnglishen_US
dc.source.titleJournal of Physical Chemistry Cen_US
dc.relation.isversionofhttp://dx.doi.org/10.1021/jp106672fen_US
dc.subjectAu nanoparticleen_US
dc.subjectDiffusion mechanismsen_US
dc.subjectDriving forcesen_US
dc.subjectGold ionsen_US
dc.subjectGold Nanoparticlesen_US
dc.subjectMatrixen_US
dc.subjectPhoto patterningen_US
dc.subjectPMMA filmsen_US
dc.subjectRaman measurementsen_US
dc.subjectRoom temperatureen_US
dc.subjectUV irradiationen_US
dc.subjectXPSen_US
dc.subjectDiffusionen_US
dc.subjectEstersen_US
dc.subjectMetal ionsen_US
dc.subjectNanoparticlesen_US
dc.subjectPolymer filmsen_US
dc.subjectScanning electron microscopyen_US
dc.subjectGolden_US
dc.titlePhotopatterning of PMMA films with gold nanoparticles: diffusion of AuCl4-ionsen_US
dc.typeArticleen_US
dc.departmentDepartment of Chemistryen_US
dc.citation.spage18401en_US
dc.citation.epage18406en_US
dc.citation.volumeNumber114en_US
dc.citation.issueNumber43en_US
dc.identifier.doi10.1021/jp106672fen_US
dc.contributor.bilkentauthorSüzer, Şefik
dc.identifier.eissn1932-7455


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