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Quantum yields of resonance Raman scattering in the case of 1,1,14,14 tetraphenyltetradecaheptaene

✍ Scribed by Chr.v. Grundherr; M. Stockburger

Book ID: 103011059
Publisher: Elsevier Science
Year: 1973
Tongue: English
Weight: 368 KB
Volume: 22
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(73)80087-9

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✦ Synopsis

Resonance Raman scattering (RRS) of l,l, 14,14 tctraphenyltetradecaheptaene in dilute benzene solution was studied. The visible and UV lines of an Arf laser were used to irradiate into the electronic absorption band. Absolute RRS cross sections were determined by comparison with Raman lines of the solvent. From such cross sections quantum yields t'or RRS were derived. Within the electronic absorption band the total RRS quantum yield has a mean value of 5 X 10". From this a non-radiative rate constant of 2 X 1014 set-' IS estimated. It is suggested that internal conversion is the radiationless process which competes with RRS.

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