STUDIES ON THYMINE AND URACIL TRIPLET EXCITED STATE IN ACETONITRILE AND WATER |
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| Authors: | C. Salet R. Bensasson |
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| Affiliation: | Institut de Pathologie Cellulaire, INSERM Unité48, Hôpital de Bicêtre, 94270 Le Kremlin–Bicetre, France;ER 98 Laboratoire de Chimie Physique, Universitéde Paris VI 91405 Orsay, France |
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| Abstract: | ![]()
Abstract— Thymine and uracil triplet-triplet absorption spectra and triplet excited state lifetimes have been observed in acetonitrile and water by nanosecond laser flash spectroscopy. A study of triplet energy transfer from these pyrimidines to retino! has also allowed an estimation of the triplet extinction coefficient εTT of thymine and uracil. These εTT were then used to determine the triplet quantum yields ØT of both pyrimidines in acetonitrile and water. |
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