Abstract
The fluorescence spectra of bare and solvated 9,9'-bianthryl were recorded in a free Jet. In the case of bare bianthryl, only the fluorescence from the locally excited (LE) state was observed, even on excitation to a high vibronic state. In contrast, the excitation of the 0-0 band of 9,9'-bianthryl solvated by acetone gave fluorescence from the charge-transfer (CT) state. The ratio of the intensity of the CT fluorescence to that of the LE fluorescence increases with increasing degree of solvation. Solvation by cyclohexane did not give CT fluorescence.
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