✦ LIBER ✦

Substituent effect on triplet lifetimes of arylketones in benzene solution

✍ Scribed by G. Favaro

Publisher: Elsevier Science
Year: 1973
Tongue: English
Weight: 436 KB
Volume: 21
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(73)80166-6

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✦ Synopsis

The triplet yields and lifetimes of a series of substitu ted benzophenoncs have been determined by their cfficienc) in sensirizing biacetyl phosphorescence, in benzene solution. The triplet decay constants of nine Pam-substituted derivatives

show n satisfactory Hnmmett-type correlation. The results are discussed on the basis of a reversible interaction of the excited ketones with the solvent. Pcssible factors which may be responsible for the inefficiency of sensitization are also discussed.

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