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On the “anomalous” flourescence of 3,4-benzypyrene in the vapour phase

✍ Scribed by G.J. Hoytink

Publisher
Elsevier Science
Year
1974
Tongue
English
Weight
353 KB
Volume
26
Category
Article
ISSN
0009-2614

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✦ Synopsis

Ar. analysis of the fluorescence of 3,4-benzpyrene in the vapour phase shows two contributions to the. "anomalous" fluorescence: (i) the emission from the second excited state to the ground state and (ii) a vibronically induced S1 -. So emission originating from the +520 cm -' vibrational level. A comparison between the intensities of the emissions indicates that in the vapour phase the vibr%tional redistribution from the 520 cm -' vibrational level of SI !o modes of tower frequencies is relatively slow.

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