Record number :
Title of article :
Solvent effect on photophysical properties of a fluorescence probe: BMVC
Author/Authors :
Cheng-Chung Chang، نويسنده , , Jen-Fei Chu، نويسنده , , Hsin-Hung Kuo، نويسنده , , Chi-Chih Kang، نويسنده , , Sheng Hsien Lin، نويسنده , , Ta-Chau Chang، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2006
Pages :
From page :
To page :
Abstract :
Fluorescence studies of 3,6-bis(1-methyl-4-vinylpyridinium) carbazole diiodide (BMVC) in glycerol/water mixtures allow us to elucidate the photophysical behavior of BMVC upon interaction with different DNA structures. The very weak fluorescence emission of BMVC in highly polar solvents of water is attributed to an increase in nonradiative decay due to the intramolecular twist of the vinyl group induced by charge transfer. Increasing the solvent viscosity and rigidity could lead to large changes in the barrier height and substantial effects on relaxation processes, and result in an enhancement of the fluorescence quantum yield. Similarly, different binding interactions of BMVC with various DNA could perturb the frictions of the reorientation of the vinyl group. We suggest that the intramolecular twist of the vinyl group of BMVC is mainly responsible for the distinct fluorescence emissions under different local environments.
Keywords :
BMVC , photophysical properties , fluorescence
Journal title :
Journal of Luminescence
Journal title :
Journal of Luminescence
Serial Year :
Link To Document :