Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/9623
Title: Fluorescence quenching of anthracene by aniline in different solvents
Authors: Reddy, Annoji
Thipperudrappa, J
Biradar, D S
Lagare, M T
Hanagodimath, S M
Keywords: : Fluorescence quenching
Anthracene
Aniline
Stern-Volmer plots
Issue Date: Sep-2004
Publisher: CSIR
Series/Report no.: C 09K 9/00
Abstract:  Fluorescence quenching of anthracene by aniline in five different solvents has been carried out at room temperature with a view to understand the quenching mechanisms. Experimental results show positive deviation in the Stern-Volmer plots in all the solvents studied. In order to interpret these results the ground state complex and sphere of action static quenching models have been invoked. Using these models various rate parameters have been determined. Ground state complex formation model is found not to be applicable. Using sphere of action static quenching model various rate parameters have been determined. The magnitudes of these parameters imply that sphere of action static quenching model agrees well with the experimental results. Hence, the positive deviation in the S-V plots is attributed to the static and dynamic quenching. Further, with the use of finite sink approximation model it has been observed that these bimolecular reactions are diffusion limited. The dependence of Stern-Volmer constant on dielectric constant of the solvents suggests the charge transfer character of the excited complex.
Description: 648-652
URI: http://hdl.handle.net/123456789/9623
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.42(09) [September 2004]

Files in This Item:
File Description SizeFormat 
IJPAP 42(9) 648-652.pdf157.63 kBAdobe PDFView/Open


Items in NOPR are protected by copyright, with all rights reserved, unless otherwise indicated.