Comparative studies of triplet states of thymine components by acetone sensitization and direct excitation in aqueous solution at room temperature

• Published in: Journal of photochemistry and photobiology. A, Chemistry. Vol. 114; no. 3; pp. 181 - 184
• Main Authors: Song, Qinhua, Lin, Weizhen, Yao, Side, Lin, Nianyun
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 30.04.1998; Elsevier Science
• Subjects: Acetone sensitization; Analytical, structural and metabolic biochemistry; Biological and medical sciences; Direct excitation; Fundamental and applied biological sciences. Psychology; Laser flash photolysis; Molecular biophysics; Nucleic acids; Nucleic bases, nucleotides; Photochemistry. Photosynthesis. Bioluminescence; Radiation-biomolecule interaction; Thymidine; Thymine; TMP; Triplet states; Acetone sensitization; TMP; Laser flash photolysis; Thymine; Direct excitation; Thymidine; Triplet states; Pyrimidine base; Triplet state; Absorption spectrometry; Sensitization; Kinetic parameter; Flash photolysis; Thymine nucleotide; Photochemistry; Acetone
• ISSN: 1010-6030; 1873-2666
• DOI: 10.1016/S1010-6030(98)00219-6

The transient absorption spectra and the kinetic parameters of decay of the triplet states of thymine and its nucleoside, nucleotide, were obtained from acetone sensitization and direct excitation in aqueous solution at room temperature. The kinetic parameters from two methods are equivalent, thus time-resolved acetone sensitization method was verified by the laser photolysis experiment. Furthermore, advantages of acetone sensitization method were clarified by the characteristics of triplet acetone and enhanced yields of triplet states of thymine components.