Results 11 to 20 of about 1,172,898 (296)

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
openaire   +3 more sources

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.
Gerald W. Feigenson
openaire   +3 more sources

Quenching Efficiency of Quantum Dots Conjugated to Lipid Bilayers on Graphene Oxide Evaluated by Fluorescence Single Particle Tracking

Applied Sciences, 2022
A single particle observation of quantum dots (QDs) was performed on lipid bilayers formed on graphene oxide (GO). The long-range fluorescence quenching of GO has been applied to biosensing for various biomolecules.
Yoshiaki Okamoto, Seiji Iwasa, Ryugo Tero   +2 more
doaj   +1 more source

Structure of the Cytoplasmic Loop between Putative Helices II and III of the Mannitol Permease of Escherichia coli: A Tryptophan and 5-Fluorotryptophan Spectroscopy Study [PDF]

, 2008
In this work, four single tryptophan (Trp) mutants of the dimeric mannitol transporter of Escherichia coli, EIImtl, are characterized using Trp and 5-fluoroTrp (5-FTrp) fluorescence spectroscopy.
Broos J., Broos J., Broos J., Broos J., Broos J., Callis P. R., Chen Y., Cioni P., Eftink M. R., Galley W. C., Gonnelli M., Gonnelli M., Koning R. I., Lakowicz J. R., Legler P. M., Lengeler J. W., Liu T. Q., Meech S. R., Nguyen T. X., Robillard G. T., Robillard G. T., Ross J. B. A., Strambini G. B., Sugiyama J. E., Swaving Dijkstra D., van Montfort B. A., van Montfort R. L. M., Veldhuis G., Veldhuis G., Veldhuis G., Vervoort E. B., Vos E. P., Winkler G. R.   +32 more
core   +12 more sources

Fluorescence Detection Characteristic of Heavy-metal Chromium Ions in Water by Photoluminescent Tungsten-oxide Cluster Material

Shipin gongye ke-ji, 2022
In this work, using Eu3+ embedded tungsten-oxygen cluster (compound 1) as the fluorescent probe material, the rapid and sensitive fluorescence detection of heavy metal Cr3+ ions in aqueous solution by compound 1 has been systematically studied.
Zhenwei WANG, Xiliang CHEN, Xiaobing HU, Changyuan LU   +3 more
doaj   +1 more source

Determination of epristeride by its quenching effect on the fluorescence of L-tryptophan

Journal of Pharmaceutical Analysis, 2013
A rapid, novel spectrofluorimetric method to determine epristeride (EP) in biological fluids and a pharmaceutical formulation was developed, based on the fact that fluorescence intensity of l-tryptophan could be quenched by EP in the medium of pH=9.0 ...
Ai-Qin Gong, Xia-Shi Zhu
doaj   +1 more source

Promoting near‐infrared II fluorescence efficiency by blocking long‐range energy migration

Aggregate, 2023
Generally, long wavelength absorbed near‐infrared II (NIR‐II) dyes have a low fluorescence efficiency in aggregate states for aggregate‐caused quenching effect, simultaneously enhancing efficiency and extending absorption is a challenging issue for NIR ...
Changjin Ou, Lei An, Ziqi Zhao, Fan Gao, Liangyu Zheng, Chao Xu, Kang Zhang, Jinjun Shao, Linghai Xie, Xiaochen Dong   +9 more
doaj   +1 more source

Empirical equation for the correction of fluorescence quenching of proteinaceous substance by Suwannee river natural organic matter

Water Practice and Technology, 2021
Fluorescence quenching of proteinaceous substances by natural organic matter is a well-known phenomenon, but there are no known methods for correcting it.
Kornravee Saipetch, Rajendra Khanal, Chihiro Yoshimura   +2 more
doaj   +1 more source

Facile synthesis of chitosan-capped ZnS quantum dots as an eco-friendly fluorescence sensor for rapid determination of bisphenol A in water and plastic samples [PDF]

, 2014
This paper describes a novel eco-friendly fluorescence sensor for determination of bisphenol A (BPA) based on chitosan-capped ZnS quantum dots (QDs). By using safe and inexpensive materials, nontoxic ZnS QDs were synthesized via an environment-friendly ...
Bie, Jiaxin, Cao, Xianyi, Guo, Jiajia, Liu, Xin, Luo, Yeli, Shen, Fei, Sun, Chunyan, Zhang, Minwei   +7 more
core   +1 more source

Binding of caffeine with nicotinamide: A study by means of fluorescence quenching and UV-Vis spectroscopic techniques

St. Petersburg Polytechnical University Journal: Physics and Mathematics, 2023
In this work, the binding of caffeine (CAF) with nicotinamide (NIC) has been investigated by means of fluorescence quenching and UV-Vis spectroscopic techniques.
Gebreyohanes Ataklti Abraha, Gemta Abebe Belay   +1 more
doaj   +1 more source