Indium nanodeposits: A substrate for metal-enhanced fluorescence in the ultraviolet spectral region

dc.contributor.authorDragan, Anatoliy
dc.contributor.authorGeddes, Chris
dc.date.accessioned2024-10-01T18:05:35Z
dc.date.available2024-10-01T18:05:35Z
dc.date.issued2010-11-03
dc.description.abstractWe have studied a metallic substrate, composed of indium nanodeposits, for metal-enhanced fluorescence (MEF) in the ultraviolet (UV) spectral region. Indium coated slides were prepared using the thermal vapor deposition technique. Theoretical finite difference time domain simulations and experimental studies show that plasmon enhanced absorption and coupled radiation through the scattering component of the extinction spectra of indium nanoparticles, lie in UV region, and are sensitive to the size and density of the nanoparticles, the thickness of the indium film, and polarity of the medium. The MEF effect, measured for intrinsic protein tryptophan and tyrosine residues, loaded onto indium films of different thickness, changes in a wavelike fashion, reflecting changes in the metal film landscape and, consequently, the chromophores coupling with surface plasmons. Indium films also significantly enhance intrinsic fluorescence of proteins themselves [bovine serum albumin]. In this case the wavelength dependence of MEF shows different emission enhancements of protein Tyr and Trp residues. Subsequently, indium-enhanced intrinsic protein fluorescence in the UV spectral region can be of great potential importance for quantitation assays as well as for the labeless detection of biomolecules in the biosciences.
dc.description.sponsorshipWe thank the Department of Chemistry and Biochemistry, University of Maryland Baltimore County, and the Institute of Fluorescence for financial support and salary.
dc.description.urihttps://pubs.aip.org/aip/jap/article/108/9/094701/345267/Indium-nanodeposits-A-substrate-for-metal-enhanced
dc.format.extent8 pages
dc.genrejournal articles
dc.identifierdoi:10.13016/m2f50a-3vsh
dc.identifier.citationDragan, Anatoliy I., and Chris D. Geddes. “Indium Nanodeposits: A Substrate for Metal-Enhanced Fluorescence in the Ultraviolet Spectral Region.” Journal of Applied Physics 108, no. 9 (November 3, 2010): 094701. https://doi.org/10.1063/1.3503439.
dc.identifier.urihttps://doi.org/10.1063/1.3503439
dc.identifier.urihttp://hdl.handle.net/11603/36590
dc.language.isoen_US
dc.publisherAIP
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Institute of Fluorescence (IoF)
dc.relation.ispartofUMBC Faculty Collection
dc.relation.ispartofUMBC Chemistry & Biochemistry Department
dc.rightsThis article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Dragan, Anatoliy I., and Chris D. Geddes. “Indium Nanodeposits: A Substrate for Metal-Enhanced Fluorescence in the Ultraviolet Spectral Region.” Journal of Applied Physics 108, no. 9 (November 3, 2010): 094701. https://doi.org/10.1063/1.3503439. and may be found at https://pubs.aip.org/aip/jap/article/108/9/094701/345267/Indium-nanodeposits-A-substrate-for-metal-enhanced.
dc.titleIndium nanodeposits: A substrate for metal-enhanced fluorescence in the ultraviolet spectral region
dc.typeText
dcterms.creatorhttps://orcid.org/0000-0002-1679-8307
dcterms.creatorhttps://orcid.org/0000-0002-9110-6374

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