Excited Singlet Absorption in 1,2-Benzanthracene by the Use of Nanosecond Laser Photolysis and Spectroscopy

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Science  27 Sep 1968:
Vol. 161, Issue 3848, pp. 1342-1343
DOI: 10.1126/science.161.3848.1342


Using the technique of laser photolysis and spectroscopy, we have observed excited singlet state absorption bands in 1,2-benzanthracene at 560 and 520 nanometers. The bands decay in less than 50 nanoseconds and are replaced by the known absorption spectrum of the lowest triplet state.