Optical selection experiments in the first excited singlet state of the benzophenone molecule in solution confirm a theoretical prediction concerning the retardation of the electronic relaxation rate with increasing the excess vibrational energy in excited electronic states of a large molecule characterized by a small electronic energy gap. © 1971.
Nitzan, A., Jortner, J., & Rentzepis, P. M. (1971). Peculiarities of the non-radiative decay of a single vibronic level in polyatomic molecules. Chemical Physics Letters, 8(5), 445–447. https://doi.org/10.1016/0009-2614(71)80424-4