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The Radiation-Induced Formation of Excited States of Aromatic Hydrocarbons in Benzene and Cyclohexane. III. Effect of Singlet State Quenchers
Frederick Dainton, T. Morrow, G. A. Salmon and G. F. Thompson
Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences
Vol. 328, No. 1575 (Jun. 27, 1972), pp. 481-496
Published by: Royal Society
Stable URL: http://www.jstor.org/stable/78166
Page Count: 16
You can always find the topics here!Topics: Fluorescence, Xenon, Atomic energy levels, Singlet state, Solutes, Molecules, Excimers, Energy transfer, Scavenging, Irradiation
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The contribution to naphthalene and pyrene triplet state formation of intersystem crossing from the excited singlet state has been determined for both cyclohexane and benzene solutions using the singlet state quenchers nitromethane and xenon. In agreement with the conclusions reported in part II, intersystem crossing plays an important role; under certain conditions up to 50% of the total triplet yield in naphthalene-cyclohexane solutions has this origin. The extinction coefficient for naphthalene triplet absorption in cyclohexane at λ max=412.5 nm is 20000 ± 5000 l mol-1 cm-1.
Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences © 1972 Royal Society