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The tuning of metal enhanced fluorescence for sensing applications
Dalton Trans., 2014Stable coinage metal nanoparticles (NPs) have been synthesized individually in an aqueous alkaline solution from the corresponding metal salts as precursors using the condensation product (CP) of salicylaldehyde and triethylenetetramine as a reagent. Silver and gold NPs are obtained with and without light illumination but UV irradiation is essential ...
Mainak, Ganguly +5 more
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Metal-Enhanced Fluorescence: Potential Applications in HTS
Combinatorial Chemistry & High Throughput Screening, 2003Metallic surfaces and particles can have dramatic effects on fluorescence, including localized excitation, increased quantum yields, increased photostability and increased distances for resonance energy transfer (RET), and directional emission. While all these effects have not yet been realized in a single system, metal-enhanced fluorescence promises ...
Chris D, Geddes +4 more
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Wavelength Dependence of Metal-Enhanced Fluorescence
The Journal of Physical Chemistry C, 2009In this paper, metal-enhanced fluorescence (MEF) from 6-propionyl-2-dimethylaminonaphthalene (Prodan) in different solvents when placed in close proximity to silver island films (SIFs), surface-deposited nanoparticles, is studied. We observe that MEF is wavelength dependent: the enhanced emission of Prodan on SIFs in different solvents changes from 1.5-
Yongxia Zhang +2 more
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Distance Dependence of Metal-Enhanced Fluorescence
Plasmonics, 2012In recent years both the mechanism and applications of metal-enhanced fluorescence (MEF) have attracted significant attention, yet many fundamental aspects of MEF remain unanswered or addressed. In this study, we address a fundamental aspect of MEF. Using fluorescein-labeled different length DNA scaffolds, covalently bound to silver nanodeposits, we ...
Anatoliy I. Dragan +6 more
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Excitation volumetric effects (EVE) in metal-enhanced fluorescence
Physical Chemistry Chemical Physics, 2011Metal-Enhanced Fluorescence (MEF) effects from different density silver island films (SiFs) and the effects of far-field excitation irradiance on the observed enhancement of fluorescence were studied. It is shown that MEF non-linearly depends on silver nanoparticle (NP) size/density, reaching a maximum value for SiFs made at a deposition time (DT) of ...
A I, Dragan, C D, Geddes
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Review of Advances in Metal-Enhanced Fluorescence
2019In this chapter, we review principles of metal-enhanced fluorescence (MEF), including critical experimental support for the Unified Plasmon-Fluorophore description for the mechanism of MEF. By this description, two routes of enhancement exist for a fluorophore coupled with a metal nanoparticle: namely enhanced absorption and enhanced emission ...
Rachael Knoblauch, Chris D. Geddes
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Sonication-Assisted Metal-Enhanced Fluorescence-Based Bioassays
Analytical Chemistry, 2009A new bioassay technique, sonication-assisted metal-enhanced fluorescence, which is based on the combined use of ultrasound waves and metal-enhanced fluorescence (MEF), is reported. In this technique, low-intensity ultrasound waves significantly reduce the bioassay time by creating a temperature gradient between the bulk and the surface, which is ...
Kadir, Aslan +2 more
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Metal‐Enhanced Fluorescence of CdTe Nanocrystals in Aqueous Solution
ChemPhysChem, 2010AbstractMetal‐enhanced fluorescence of semiconductor nanocrystals (NCs) is investigated. There is very little attention paid to the metal‐enhanced fluorescence in aqueous solution, which has great potential applications in bioscience. In this work, we directly observe metal‐enhanced fluorescence of CdTe NC solution by simply mixing CdTe NCs and Au ...
Rongqing, Li +5 more
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