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dc.contributor.authorCheng, P.
dc.contributor.authorSilvester, Debbie
dc.contributor.authorWang, G.
dc.contributor.authorKalyuzhny, G.
dc.contributor.authorDouglas, A.
dc.contributor.authorMurray, R.
dc.date.accessioned2017-01-30T13:51:21Z
dc.date.available2017-01-30T13:51:21Z
dc.date.created2015-09-29T01:51:51Z
dc.date.issued2006
dc.identifier.citationCheng, P. and Silvester, D. and Wang, G. and Kalyuzhny, G. and Douglas, A. and Murray, R. 2006. Dynamic and Static Quenching of Fluorescence by 1-4 nm Diameter Gold Monolayer-Protected Clusters. Journal of Physical Chemistry B. 110: pp. 4637-4644.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/35740
dc.identifier.doi10.1021/jp057028n
dc.description.abstract

How the efficiency of molecular quenching by Au nanoparticles depends on nanoparticle size is reported for (a) dynamic (collisional) quenching of four different fluorophores by three Au nanoparticles having similar protective layers but differing core diameters (1.1, 1.6, and 2.0 nm) and (b) static quenching in the electrostatic association between [Ru(bpy)3]2+ and five tiopronin-protected Au nanoparticles having core diameters from 1.3 to 3.9 nm. The quenching constants systematically increase with core size. In (a), the dynamic constants scale with the molar absorbance coefficients of the nanoparticles, showing the essentially of the absorbance/ emission spectral overlap, and the associated nanoparticle core density of electronic states, in energy-transfer quenching. In (b), the fluorescence of the Au nanoparticle itself was enhanced by energy transfer from the [Ru(bpy)3]2+ fluorophore.

dc.publisherAmerican Chemical Society
dc.titleDynamic and Static Quenching of Fluorescence by 1-4 nm Diameter Gold Monolayer-Protected Clusters
dc.typeJournal Article
dcterms.source.volume110
dcterms.source.startPage4637
dcterms.source.endPage4644
dcterms.source.issn10895647
dcterms.source.titleJournal of Physical Chemistry B
curtin.accessStatusFulltext not available


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