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Steric effects in the quenching of aromatic ketone phosphorescence: tetraisopropylethylene

✍ Scribed by Maharaj, Utam; Winnik, Mitchell A.


Book ID
127241089
Publisher
American Chemical Society
Year
1984
Tongue
English
Weight
284 KB
Volume
49
Category
Article
ISSN
0022-3263

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Origin of the anomalous phosphorescence
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Based on an emission study of xanthone at =2 and 77Β°K it is concluded that the "dual" phosphorescence at 77Β°K in a 3-methylpentane glass matrix is due to emission from two n,tr \* triplet states of xanthone. The two triplet states and their respective ground states'are distinguished by their differe