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Picosecond pumping and probing of an opaque sample of xanthone adsorbed on to silica gel demonstrates the growth of a transient absorption at 590 nm which levels to a plateau within 800 ps; on the basis of spectral evidence from nanosecond diffuse reflectance laser flash photolysis, this transient is assigned as the triplet state of xanthone.
F. Wilkinson, C. J. Willsher, P. A. Leicester, J. R. M. Barr and M. J. C. Smith, J. Chem. Soc., Chem. Commun., 1986, 1216 DOI: 10.1039/C39860001216
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