Results 1 to 10 of about 24,834 (75)
Quenching of the fluorescence of NO2 [PDF]
Journal of Photochemistry, 1972 The fluorescence yield of NO2 was monitored at 25 C with incident wavelengths of 4047, 4358, and 4800A at fluorescence wavelengths of 4860, 5577, and 6300A. The NO2 pressure was varied between 0.004 and 0.080 torr. Measurements were taken both in the absence of foreign gases and in the presence of up to 30 torr. He, N2, and O2 at each NO2 pressure.
Silvia E. Braslavsky, Julian Heicklen
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Fluorescence quenching by plasmonic nanoantennas [PDF]
Physical Review B, 2020 Generalizing a previously developed analytical model of metal-enhanced fluorescence to the case of the strong coupling between a quantum emitter and a plasmonic nanoantenna, we study the fluorescence quenching in the strong coupling regime. When the nanoantenna is a simple Ag sphere and the quantum emitter approaches to its surface the fluorescence ...
Sharifian Mazraeh Mollaei, Masoud +3 more
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Fluorescence Quenching in Model Membranes [PDF]
Biophysical Journal, 1982 Fluorescence quenching of membrane-bound fluorophors by nitroxide spin-labeled phospholipids has proved to be a useful technique for examining lipid-fluorophor contact (1-3). When the fluorophor is the tryptophanyl residue of a polypeptide, this method can yield relative binding constants of phospholipids to a membrane-bound polypeptide.
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Fluorescence quenching in graphene: a fundamental ruler and evidence for transverse plasmons [PDF]
Phys. Rev. B 84, 165438 (2011), 2011 Graphene's fluorescence quenching is studied as a function of distance. Transverse decay channels, full retardation and graphene-field coupling to all orders are included, extending previous instantaneous results. For neutral graphene, a virtually exact analytical expression for the fluorescence yield is derived, valid for arbitrary distances and only ...
arxiv +1 more source
Thioamides as Fluorescence-Quenching Probes [PDF]
Biophysical Journal, 2013 Fluorescence-quenching probes can be used to study the dynamics, folding, and aggregation of appropriately labeled protein systems. Valuable structural information can be extracted from distance-dependent quenching experiments; however, the structural resolution is often limited by the large size of the chromophore labels typically required for this ...
Jacob M. Goldberg, E. James Petersson
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Unified evaluation of surface-enhanced resonance Raman scattering and fluorescence under strong coupling regime [PDF]
The Journal of chemical physics 149 (24), 244701 (2018), 2018 We demonstrate importance of molecular multiple excitons and higher-order plasmons for both enhancement and quenching of resonance Raman and fluorescence of single dye molecule located at plasmonic hotspot under strong coupling regime. The multiple excitons induce complicated spectral changes in plasmon resonance and higher-order plasmons yield drastic
arxiv +1 more source
Measurement of the pressure dependence of air fluorescence emission induced by electrons [PDF]
Astropart.Phys.28:41-57,2007, 2007 The fluorescence detection of ultra high energy (> 10^18 eV) cosmic rays requires a detailed knowledge of the fluorescence light emission from nitrogen molecules, which are excited by the cosmic ray shower particles along their path in the atmosphere. We have made a precise measurement of the fluorescence light spectrum excited by MeV electrons in dry ...
arxiv +1 more source
An alternative method for correcting fluorescence quenching [PDF]
Ocean Science, 2015 Abstract. Under high light intensity, phytoplankton protect their photosystems from bleaching through non-photochemical quenching processes. The consequence of this is suppression of fluorescence emission, which must be corrected when measuring in situ yield with fluorometers. We present data from the Southern Ocean, collected over five austral summers
L. Biermann +4 more
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Laser-induced fluorescence quenching of red fluorescent dyes with green excitation: avoiding artifacts in PIE-FRET and FCCS analysis [PDF]
, 2018 Multicolor excitation is at the core of many fluorescence spectroscopy techniques such as PIE-FRET, ALEX-FRET, or FCCS. However, the influence of the multiple laser excitations on the dye photophysics is often overlooked. Here, we show that green laser pulses can surprisingly quench the fluorescence of common red dyes Alexa Fluor 647 and Atto 647N ...
arxiv +1 more source
Solvatochromism of (-)-Epigallocatechin 3-O-Gallate (EGCG) Fluorescence: Dependence on Solvent Protonicity [PDF]
arXiv, 2021 Health benefits of EGCG are well established; however, the mechanisms of EGCG action are not completely understood. In our previous study we discovered solvatochromism of EGCG fluorescence and described the dependence of fluorescence maxima on solvent polarity. We also noted that fluorescence intensity (FI) depends on solvent.
arxiv