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Non-exponential phosphorescence decay of phenanthrene in biphenyl

✍ Scribed by Shoji Tean; Yasuhiko Gondo

Book ID
103023719
Publisher
Elsevier Science
Year
1986
Tongue
English
Weight
332 KB
Volume
123
Category
Article
ISSN
0009-2614

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✦ Synopsis

Non-exponential phosphorescence decays of phenanthrene in biphenyl polycrystals have been observed. It is found that excitation with short duration quickens the decay while the decay is slower after excitation with weaker intensity. The origin of the non-exponentiality is ascribed to the distance-dependent interactions between guest molecules in the lowest excited triplet state.

πŸ“œ SIMILAR VOLUMES

Photochemistry in polymer solidsβ€”4. On t
Photochemistry in polymer solidsβ€”4. On the intensity dependence of non-exponential decay of benzophenone phosphorescence in poly(methyl methacrylate)
✍ K. Horie; I. Mita πŸ“‚ Article πŸ“… 1984 πŸ› Elsevier Science 🌐 English βš– 171 KB

Change in the intensity of the irradiation laser pulse did not influence the non-exponential decay profile of benzophenone phosphorescence in poly(methyl methacrylate) at 20 ' ~. This result is incompatible with the biphotonic triplet-triplet annihilation process, but supports the diffusion-controll