Title:
Photoactivated Fluorescence from Small Silver Nanoclusters and Their Relation to Raman Spectroscopy

dc.contributor.advisor Dickson, Robert M.
dc.contributor.author Capadona, Lynn A. en_US
dc.contributor.committeeMember Lyon, L. Andrew
dc.contributor.committeeMember Mohan Srinivasarao
dc.contributor.committeeMember El-Sayed, Mostafa A.
dc.contributor.committeeMember Whetten, Robert L.
dc.contributor.department Chemistry and Biochemistry en_US
dc.date.accessioned 2005-03-03T17:45:28Z
dc.date.available 2005-03-03T17:45:28Z
dc.date.issued 2004-07-12 en_US
dc.description.abstract Photoactivated fluorescence from individual silver nanoclusters ranging in size from 2 8 atoms has been demonstrated at room temperature. The optical properties of such clusters are far superior to those of fluorescence dyes with absorption cross sections ~50 times stronger than those of even the best organic dyes. The strong oscillator strengths produced from such nanoclusters has been shown to yield comparable enhancement factors in the surface-enhanced Raman spectroscopy (SERS) process to those observed in the presence of a plasmon- supporting nanoparticle. Raman transitions are in fact so strong that antistokes scattering is also observable on a single molecule (SM) level marking the first true demonstration of SM-SERS to date. Capable of generating true scaffold specific Raman scattering on the single molecule level, the combination of fluorescence from the small nanoclusters and strong observed Raman signals in the absence of a nanoparticle strongly indicate a chemical or charge transfer SERS enhancement mechanism. en_US
dc.description.degree Ph.D. en_US
dc.format.extent 3208845 bytes
dc.format.mimetype application/pdf
dc.identifier.uri http://hdl.handle.net/1853/5117
dc.language.iso en_US
dc.publisher Georgia Institute of Technology en_US
dc.subject Data storage en_US
dc.subject Silver nanoclusters
dc.subject Single molecule Raman
dc.title Photoactivated Fluorescence from Small Silver Nanoclusters and Their Relation to Raman Spectroscopy en_US
dc.type Text
dc.type.genre Dissertation
dspace.entity.type Publication
local.contributor.advisor Dickson, Robert M.
local.contributor.corporatename School of Chemistry and Biochemistry
local.contributor.corporatename College of Sciences
relation.isAdvisorOfPublication 328b7195-8f0f-4be1-a8e9-90ba4c20fb59
relation.isOrgUnitOfPublication f1725b93-3ab8-4c47-a4c3-3596c03d6f1e
relation.isOrgUnitOfPublication 85042be6-2d68-4e07-b384-e1f908fae48a
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