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Fluorescence Anisotropy Controlled by Light Quenching

Photochemistry and Photobiology, 1998
We demonstrated that fluorescence anisotropy can be effectively decreased or increased in the presence of light quenching, depending on relative polarizations of excitation and quenching pulses. For parallel light quenching, anisotropy decreases to 0.103 and z-axis symmetry is preserved.
Joseph R. Lakowicz   +2 more
openaire   +4 more sources

Chlorophyll fluorescence quenching by xanthophylls [PDF]

open access: possiblePhysical Chemistry Chemical Physics, 2003
The interactions of the xanthophylls zeaxanthin, antheraxanthin and violaxanthin with chlorophyll, which are relevant for the chlorophyll fluorescence quenching in the non-photochemical quenching (NPQ) process in green plants, are investigated by means of quantum chemical methods.
Andreas Dreuw   +2 more
openaire   +1 more source

Fluorescence quenching in Nd:YAG

Applied physics, 1973
We show that quenching of the Nd fluorescence is in principle not associated with the Nd3+ ion but with the host. The process is due to near-field electric dipole interaction between Nd pairs, and cross relaxation via the4I1 5/2 manifold. We present for the first time the complete fluorescence spectrum and level scheme of Nd∶YAG, and find that Nd∶YAG ...
M. Blätte, H. G. Danielmeyer, P. Balmer
openaire   +2 more sources

Fluorescence Quenching Nanoprobes Dedicated to In Vivo Photoacoustic Imaging and High-Efficient Tumor Therapy in Deep-Seated Tissue.

Small, 2015
Photoacoustic imaging (PAI) and photoacoustic (PA) therapy have promising applications for treating tumors. It is known that the utilization of high-absorption-coefficient probes can selectively enhance the PAI target contrast and PA tumor therapy ...
Huan Qin, Ting Zhou, Sihua Yang, D. Xing
semanticscholar   +1 more source

Quenching of Fluorescence

1983
Fluorescence quenching refers to any process which decreases the fluorescence intensity of a given substance. A variety of processes can result in quenching. These include excited state reactions, energy transfer, complex formation, and collisional quenching.
openaire   +2 more sources

Highly sensitive and selective strategy for microRNA detection based on WS2 nanosheet mediated fluorescence quenching and duplex-specific nuclease signal amplification.

Analytical Chemistry, 2014
MicroRNAs (miRNAs) play vital roles in physiologic and pathologic processes and are significant biomarkers for disease diagnostics and therapeutics. However, rapid, low-cost, sensitive, and selective detection of miRNAs remains a challenge because of ...
Q. Xi   +6 more
semanticscholar   +1 more source

Investigation into the fluorescence quenching behaviors and applications of carbon dots.

Nanoscale, 2014
Carbon dots (CDs) are novel fluorescent materials with low toxicity and good biocompatibility. Herein, the collisional/dynamic and photoluminescence (PL) center destruction quenching behaviors of a novel type of CDs were investigated.
Yubin Song   +7 more
semanticscholar   +1 more source

Magnetic quenching of fluorescence in NO2

The Journal of Chemical Physics, 1973
Author Institution: The James Franck Institute and Department of Chemistry, The University of ...
Butler, Shala   +2 more
openaire   +2 more sources

Fluorescence quenching of quantum dots by gold nanoparticles: a potential long range spectroscopic ruler.

Nano letters (Print), 2014
The dependence of quantum dot (QD) fluorescence emission on the proximity of 30 nm gold nanoparticles (AuNPs) was studied with controlled interparticle distances ranging from 15 to 70 nm.
Anirban Samanta   +4 more
semanticscholar   +1 more source

Complex-formation-enhanced fluorescence quenching effect for efficient detection of picric acid.

Chemistry, 2014
Amine-functionalized α-cyanostilbene derivatives (Z)-2-(4-aminophenyl)-3-(4-butoxyphenyl)acrylonitrile (ABA) and (Z)-3-(4-butoxyphenyl)-2-[4-(butylamino)phenyl]acrylonitrile (BBA) were designed for specific recognition of picric acid (PA), an ...
Aixiang Ding   +8 more
semanticscholar   +1 more source

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