Results 321 to 330 of about 1,063,736 (383)

Rhodamine 101-graphene oxide composites in aqueous solution: the fluorescence quenching process of rhodamine 101.

Physical Chemistry, Chemical Physics - PCCP, 2014
The interaction of rhodamine 101 (Rh101) with graphene oxide (GO) in aqueous dispersion was examined using advanced spectroscopic techniques. Rh101-GO composites in water were easily prepared by mixing an aqueous solution of both components since GO ...
Ebru Bozkurt, Murat Acar, Y. Onganer, K. Meral   +3 more
semanticscholar   +1 more source

Low dose detection of γ radiation via solvent assisted fluorescence quenching.

Journal of the American Chemical Society, 2014
Development of low cost, easy-to-use chemical sensor systems for low dose detection of γ radiation remains highly desired for medical radiation therapy and nuclear security monitoring.
Jimin Han, Miao Xu, Brian Wang, Na Wu, Xiaomei Yang, Haori Yang, B. Salter, Ling Zang   +7 more
semanticscholar   +1 more source

Nitrite ion-induced fluorescence quenching of luminescent BSA-Au(25) nanoclusters: mechanism and application.

In Analysis, 2014
Fluorescence quenching is an interesting phenomenon which is highly useful in developing fluorescence based sensors. A thorough understanding of the fluorescence quenching mechanism is essential to develop efficient sensors.
Binesh Unnikrishnan, Shihchun Wei, Wei-Jane Chiu, Jinshun Cang, P. Hsu, Chih-Ching Huang   +5 more
semanticscholar   +1 more source

[10] Solute quenching of protein fluorescence

1978
Publisher Summary This chapter considers various ways of presenting and interpreting data using model calculations based on the modified Stern–Volmer equation. It provides detail information about the experimental methods for the purpose of obtaining meaningful quenching data. A quencher molecule can deactivate an excited fluorophor at the instant of
Paul C. Leavis, Sherwin S. Lehrer
openaire   +3 more sources

Nanoparticle induced fluorescence quenching

Radiation Physics and Chemistry, 1997
Fluorescence quenching of some dyes and probe molecules residing near the surface of very small silver metal particulate has been described. The quenching effect has been shown to be surface induced which has been authenticated by the reversible formation and destruction of the particle surface.
Tapan K. Sau, Nikhil R. Jana, Tarasankar Pal   +2 more
openaire   +2 more sources

Charge Transfer and Fluorescence Quenching

The Journal of Chemical Physics, 1960
A charge-transfer-interaction mechanism has been proposed for the quenching of fluorescence of a number of polynuclear aromatic hydrocarbons by aromatic solvents, especially methylated benzenes. The quenching efficiency has been found to be in the order benzene<toluene<xylene<mesitylene, which is also the order in which ionization ...
Sadhan Basu, Dilip Kuman Majumdar
openaire   +2 more sources

Fluorescence quenching of carbon nitride nanosheet through its interaction with DNA for versatile fluorescence sensing.

Analytical Chemistry, 2013
This work investigates the interaction of carbon nitride nanosheet (CNNS), a recently developed two-dimensional nanomaterial, with DNA and its fluorescence quenching mechanism on fluorophore labeled single-stranded DNA probes.
Quanbo Wang, Wei Wang, Jianping Lei, Nan Xu, Fenglei Gao, H. Ju   +5 more
semanticscholar   +1 more source

FLUORESCENCE QUENCHING OF INDOLE BY DIMETHYLFORMAMIDE

Photochemistry and Photobiology, 1984
Abstract— The effect of dimethylformamide on the lifetime (T) and quantum yield (F) of indole has been determined. Negative Stern‐Volmer deviations prevail for T and F, but F0/F T0/T at all DMF concentrations. The deviation between F0/F and T0/T is ascribed to changes in F0 and T0 induced by the change in solvent composition at the higher quencher ...
Mary K. Campbell, Anthony F. Fucaloro, Leslie S. Forster   +2 more
openaire   +2 more sources

Chlorophyll fluorescence: a probe of photosynthesis in vivo.

Annual Review of Plant Biology, 2008
The use of chlorophyll fluorescence to monitor photosynthetic performance in algae and plants is now widespread. This review examines how fluorescence parameters can be used to evaluate changes in photosystem II (PSII) photochemistry, linear electron ...
N. Baker
semanticscholar   +1 more source

Effect of Conjugated Backbone Protection on Intrinsic and Light-Induced Fluorescence Quenching in Polythiophenes

, 2014
Polythiophenes (PTs), particularly regioregular poly(3-hexylthiophene-2,5-diyl) (rr-P3HT), are important materials in photovoltaics. The photophysical properties of PTs are still poorly understood, because of their aggregation tendency and formation of ...
D. Sahoo, K. Sugiyasu, Yuxi Tian, M. Takeuchi, I. Scheblykin   +4 more
semanticscholar   +1 more source