Results 261 to 270 of about 1,139,926 (347)

Label-Free Platform for MicroRNA Detection Based on the Fluorescence Quenching of Positively Charged Gold Nanoparticles to Silver Nanoclusters.

Analytical Chemistry, 2018
A novel strategy was developed for microRNA-155 (miRNA-155) detection based on the fluorescence quenching of positively charged gold nanoparticles [(+)AuNPs] to Ag nanoclusters (AgNCs).
Xiangmin Miao, Zhiyuan Cheng, Haiyan Ma, Zongbing Li, Ning Xue, Po Wang   +5 more
semanticscholar   +1 more source

Phase-Dependent Fluorescence Quenching Efficiency of MoS2 Nanosheets and Their Applications in Multiplex Target Biosensing.

ACS Applied Materials and Interfaces, 2018
Two-dimensional layered transition-metal dichalcogenide nanosheets have shown great potential in biosensors owing to their unique properties. Here, we exfoliated ultrathin metallic and semiconductive MoS2 nanosheets based on a chemical exfoliation method.
Lingyi Lan, Danke Chen, Yao Yao, Xinsheng Peng, Jian Wu, Yanbin Li, Jianfeng Ping, Y. Ying   +7 more
semanticscholar   +1 more source

A Highly Sensitive Strategy for Fluorescence Imaging of MicroRNA in Living Cells and in Vivo Based on Graphene Oxide-Enhanced Signal Molecules Quenching of Molecular Beacon.

ACS Applied Materials and Interfaces, 2018
In situ imaging of microRNA (miRNA) in living cells and in vivo is beneficial for promoting the studies on miRNA-related physiological and pathological processes.
Limin Yang, Bo Liu, Meimei Wang, Jia Li, W. Pan, Xiaonan Gao, Na Li, B. Tang   +7 more
semanticscholar   +1 more source

Detection of oxygen by fluorescence quenching

Applied Optics, 1985
The incorporation of an aromatic hydrocarbon fluorescent compound into silicone allows utilization of fluorescence quenching as a mechanism to measure molecular oxygen concentration in the composite matrix. Excitation and emission spectra of the aromatics change in agreement with the Franck-Condon model when the universal solvent is benzene ...
Mary E. Cox, Bruce Dunn
openaire   +3 more sources

Enhancement and quenching of single-molecule fluorescence.

Physical Review Letters, 2006
We present an experimental and theoretical study of the fluorescence rate of a single molecule as a function of its distance to a laser-irradiated gold nanoparticle.
P. Anger, Palash Bharadwaj, L. Novotný
semanticscholar   +1 more source

Study of Fluorescence Quenching Ability of Graphene Oxide with a Layer of Rigid and Tunable Silica Spacer.

Langmuir, 2018
The fluorescence quenching property of graphene oxide (GO) has been newly demonstrated and applied for fluorescence imaging and biosensing. In this work, a new nanostructure was designed for effectively studying the quenching ability of GO.
Xu Wu, Yuqian Xing, Kevin Zeng, Kirby Huber, J. Zhao   +4 more
semanticscholar   +1 more source

The quenching of anthracene fluorescence

Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1951
The quenching of the fluorescence of anthracene excited by light of wave-length 3650 Å by oxygen, sulphur dioxide, and by carbon tetrabromide, has been investigated both in the gaseous state and in paraffin solutions of viscosities from 0·003 to 1·9 poises. In the gaseous state quenching occurs on nearly every collision.
W. S. Metcalf, Edmund John Bowen
openaire   +2 more sources

Quenching of NO2 Fluorescence

The Journal of Chemical Physics, 1966
Quenching constants for NO2 fluorescence were obtained for 13 different inert gases. Quenching cross sections range from 1/25 to 1/2 of gas kinetic and increase with increasing molecular complexity, and dipole moment. No unusual resonance effect for quenching by ground-state NO2 was found.
G. H. Myers, F. Kaufman, David M. Silver
openaire   +2 more sources

Fluorescence Quenching in Membrane Phase

Biochemical and Biophysical Research Communications, 1995
Membrane-related events can be investigated when the fluorescence of an intramembrane fluorophore is quenched by molecules that are dissolved in lipid phase. In this case the bimolecular quenching constant characterises the relative transport rate of the fluorophore and quencher molecules in the membrane interior and thereby it is related to the ...
Z. Lakos, A. Szarka, Béla Somogyi
openaire   +3 more sources

Quenching of chlorophyll fluorescence by quinones

IUBMB Life, 1998
AbstractQuinones caused quenching of Chl a fluorescence in native and model systems. Menadione quenched twofold the fluorescence of Chl a and BChl a in pea chloroplasts, chromatophores of purple bacteria, and liposomes at concentrations of 50‐80 μM. To obtain twofold quenching in Triton X‐100 micelles and in ethanol, the addition of 1.3 mM and 11 mM ...
A V Kitashov, Olga F. Borisova, Vitaly D. Samuilov, A. Y. Borisov, Eugene L. Barsky   +4 more
openaire   +3 more sources