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Fluorescence from the second excited singlet of aromatic thioketones in solution

โœ Scribed by Mary Mahaney; J.Robert Huber


Publisher
Elsevier Science
Year
1975
Tongue
English
Weight
623 KB
Volume
9
Category
Article
ISSN
0301-0104

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The emission spectra of the second excited singlet state of [ 181 annukne and of monofluoro [ 181 annulene (m a 3methylpentanc glass at 4 K) are reported. The large ener,7 gap between the fist and second excited singlet states inhibits fast internal cogversion and favours the appearance of S2 + So e

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With hqwd \_wlutlons of the aromstlc ketones anthraqumone and 'lamhone, a P-type delayed fluorescence from upper ewited smglet states, resultmg from tnplet-tnplet annihdation, has been obsened. Some peculurltles of the triplet-triplet annihilation of aromatlc ketones are dacussed.

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