Fluorescence quenching of BPBD by aniline in benzene–acetonitrile mixtures |
| |
| Institution: | 1. Department of Physics, Gulbarga University, Gulbarga 585106, Karnataka, India;2. Department of Physics, Karnatak University, Dharwad 580003, Karnataka, India;1. School of Public Health, Nanchang University, Nanchang 330006, PR China;2. Institute of Quality Standard and Testing Technology, Yunnan Academy of Agriculture Science, 650223 Kunming, PR China;1. Hypertension in Africa Research Team (HART), North-West University, Potchefstroom, South Africa;2. Centre for Individualized Medicine (CIMA); Department of Clinical Biochemistry and Pharmacology, Odense University Hospital, Denmark;3. Clinical Research Centre 136, Copenhagen University, Hvidovre Hospital, Hvidovre, Denmark;1. Institute for Materials Research, Tohoku University, Sendai, Japan;2. New Industry Creation Hatchery Center (NICHe), Tohoku University, Sendai, Japan;3. C&A corporation, Sendai, Japan;4. Institute of Physics AS CR, Prague, Czech Republic;1. Animal, Dairy and Veterinary Sciences Department, Utah State University, Logan, UT 84335, United States;2. Institute for Antiviral Research, Utah State University, Logan, UT 84335, United States;3. Utah Veterinary Diagnostic Laboratory, Utah State University, Logan, UT 84335, United States;4. Defyrus, Inc., 2 Bloor Street W, Suite 2602, Toronto, ON M4W 3E2, Canada |
| |
| Abstract: | The quenching of fluorescence of 2-(4′-t-butylphenyl)-5-(4′′-biphenylyl)-1,3,4-oxadiazole (BPBD) has been studied by aniline in different solvent mixtures of benzene and acetonitrile at room temperature. The quenching is found to be appreciable and a positive deviation from linearity was observed in the Stern–Volmer plot in all the solvent mixtures. Various rate parameters for the quenching process have been determined by sphere of action static quenching model and finite sink approximation model. The magnitudes of these rate parameters indicate that positive deviation in the Stern–Volmer plot is due to both static and dynamic processes. The dependence of Stern–Volmer constant on dielectric constant of the solvent mixture indicates the possibility of different solvent molecule composition around the fluorescent from that of the bulk. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
