Results 21 to 30 of about 270,893 (292)
Metal-enhanced excimer (P-type) fluorescence [PDF]
Chemical Physics Letters, 2008 In this Letter, we report the first observation of metal-enhanced excimer (P-type) fluorescence from pyrene. Pyrene in close proximity to silver island films (SIFs) shows enhanced pyrene excimer emission with a ?2.5-fold higher emission intensity observed from SIFs and 5×10?3M pyrene, as compared to a quartz control sample containing no silver ...
Yongxia, Zhang +3 more
openaire +2 more sources
Metal-enhanced S2 fluorescence from azulene [PDF]
Chemical Physics Letters, 2006 In this paper, we report the first observation of metal-enhanced S(2) emission at room and low temperature (77K). The S(2) emission intensity of Azulene is enhanced by close proximity to Silver island films (SiFs). In this regard, a ≈ 2-fold higher S(2) fluorescence intensity of Azulene was observed from SiFs as compared to a glass control sample. This
Yongxia, Zhang +3 more
openaire +2 more sources
A single chemosensor for multiple analytes: fluorogenic and ratiometric absorbance detection of Zn²⁺, Mg²⁺ and F⁻, and its cell imaging [PDF]
, 2015 A simple coumarin based sensor 1 has been synthesized from the condensation reaction of 7-hydroxycoumarin and ethylenediamine via the intermediate 7-hydroxy-8-aldehyde-coumarin.
Gang, Wei +6 more
core +2 more sources
Metal-enhanced fluorescence of single green fluorescent protein (GFP) [PDF]
Biochemical and Biophysical Research Communications, 2008 The green fluorescent protein (GFP) has emerged as a powerful reporter molecule for monitoring gene expression, protein localization, and protein-protein interaction. However, the detection of low concentrations of GFPs is limited by the weakness of the fluorescent signal and the low photostability.
Yi, Fu, Jian, Zhang, Joseph R, Lakowicz
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Metal enhanced fluorescence on silicon wafer substrates [PDF]
Chemical Physics Letters, 2008 We report on the fluorescence enhancement induced by silver island film (SIF) deposited on a silicon wafer. The model immunoassay was studied on silvered and unsilvered wafers. The fluorescence brightness of Rhodamine Red X increased about 300% on the SIF, while the lifetime was reduced by several fold and the photostability increased substantially. We
I, Gryczynski +7 more
openaire +2 more sources
Metal-Enhanced Fluorescence of Chlorophylls in Single Light-Harvesting Complexes [PDF]
, 2008 Ensemble and single-molecule spectroscopy demonstrates that both emission and absorption of peridinin−chlorophyll−protein photosynthetic antennae can be largely enhanced through plasmonic interactions.
Brotosudarmo, Tatas H. P. +8 more
core +1 more source
Frontiers in Chemistry, 2019 Silica-shell coated noble metal nanoparticles have shown a good performance in surface enhanced fluorescence and Raman scattering. However, silica-shell coated single noble nanoparticle cannot effectively enhance the optical signal due to the relative ...
Chengyun Zhang +3 more
doaj +1 more source
Translation of Nanoantenna Hot-Spots by a Metal-Dielectric Composite Superlens [PDF]
, 2009 We employ numerical simulations to show that highly localized, enhanced electromagnetic fields, also known as "hot spots," produced by a periodic array of silver nanoantennas can be spatially translated to the other side of a metal-dielectric composite ...
Kildishev, Alexander V. +3 more
core +4 more sources
DNA hybridization assays using metal-enhanced fluorescence [PDF]
Biochemical and Biophysical Research Communications, 2003 We describe a new approach to DNA hybridization assays using metal-enhanced fluorescence. Thiolated oligonucleotides were bound to silver particles on a glass substrate. Addition of a complementary fluorescein-labeled oligonucleotide resulted in a dramatic time-dependent 12-fold increase in fluorescence intensity during hybridization.
Joanna, Malicka +2 more
openaire +2 more sources
A proposal and a theoretical analysis of an enhanced surface plasmon coupled emission structure for single molecule detection [PDF]
, 2016 We propose a structure that can be used for enhanced single molecule detection using surface plasmon coupled emission (SPCE). In the proposed structure, instead of a single metal layer on the glass prism of a typical SPCE structure for fluorescence ...
Lakowicz J. R. +6 more
core +1 more source