Kp. Geigle et al., FRANCK-CONDON HERZBERG-TELLER INTERFERENCES IN THE L-1(B) TRANSITIONSOF PYRENE AND CHRYSENE/, Journal of photochemistry and photobiology. A, Chemistry, 105(2-3), 1997, pp. 183-187
In an extension of an earlier study, we present experimental evidence
for pronounced Franck-Condon/Herzberg-Teller interferences in the firs
t singlet transition (1L(b)) of pyrene and chrysene. The experimental
observations are compared with the results of calculations based on fi
rst-order Herzberg-Teller theory and the floating orbital approximatio
n. The calculations succeed for chrysene but not for pyrene. Possible
reasons for this failure are discussed. (C) 1997 Elsevier Science S.A.