Journal
LUMINESCENCE
Volume 33, Issue 6, Pages 1019-1025Publisher
WILEY
DOI: 10.1002/bio.3502
Keywords
diffusion-limited reaction; fluorescence quenching; high polarity solvents; quenching models; Stern-Volmer relationship
Categories
Funding
- BVB CET
- KLE Society
- BVB CET, Hubli
Ask authors/readers for more resources
A study on fluorescence quenching was carried out for the coumarin derivative 2-acetyl-3H-benzo[f]chromen-3-one (2AHBC) with aniline at room temperature. Efficient fluorescence quenching was observed and Stern-Volmer (S-V) plots showed upward curves from linearity in all solvents of different polarities. For the solute 2AHBC, ground state complex formation does not hold in our study. The kinetic distance (r) value was found to be greater than the encounter distance (R) and indicated that the quenching reaction was held within the sphere of action. Diffusion-limited reactions were found to be more prominent in high polarity solvents, namely dimethyl sulfoxide (DMSO), DMF, ACN, methanol, ethanol, propanol and DCM. The relationships between quenching constant (K-SV) and dielectric constants (epsilon) of the different solvents were studied.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available