Current address: Department of Chemistry, Indian Institute of Technology, Kharagpur, PIN 721 302, WB, India.
Solvent Effects on the Steady-state Absorption and Fluorescence Spectra of Uracil, Thymine and 5-Fluorouracil†
Article first published online: 1 JUN 2007
Photochemistry and Photobiology
Volume 83, Issue 3, pages 595–599, May/June 2007
How to Cite
Gustavsson, T., Sarkar, N., Bányász, Á., Markovitsi, D. and Improta, R. (2007), Solvent Effects on the Steady-state Absorption and Fluorescence Spectra of Uracil, Thymine and 5-Fluorouracil. Photochemistry and Photobiology, 83: 595–599. doi: 10.1111/j.1751-1097.2007.00052.x
This invited paper is part of the Symposium-in-Print: DNA Photodynamics.
- Issue published online: 1 JUN 2007
- Article first published online: 1 JUN 2007
- Received 16 November 2006; accepted 28 December 2006
We report a comparison of the steady-state absorption and fluorescence spectra of three representative uracil derivatives (uracil, thymine and 5-fluorouracil) in alcoholic solutions. The present results are compared with those from our previous experimental and computational studies of the same compounds in water and acetonitrile. The effects of solvent polarity and hydrogen bonding on the spectra are discussed in the light of theoretical predictions. This comparative analysis provides a more complete picture of the solvent effects on the absorption and fluorescence properties of pyrimidine nucleobases, with special emphasis on the mechanism of the excited state deactivation.