Abstract
Abstract The lowest energy band in the electronic absorption spectrum of biphenyl is broad and structureless. Considering a spectral comparison of biphenyl and related molecules, Platt2 suggested that this band results from two different electronic transitions. Similarly, after making a fluorescence lifetime study, Berlman and Steingraber3 predicted that the first singlet transition should be forbidden and thus the broad band should contain a hidden band. In this note we confirm this prediction.
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