- Conference date: 10-22 May 1999
- Location: Cargese, Corisca (France)
Terrylene in p-terphenyl has been widely studied by optical techniques. Single molecule methods show photo-induced, well defined and reversible frequency jumps of molecules in one of the sites occupied by the guest, constituting light-driven, molecular flip-flops. Empirical molecular modelling is applied to determine the nature of the substitution sites of terrylene in p-terphenyl. Simulated annealing shows further that some of the sites may exist in several conformational states. Consideration of the numbers of minima and of spectral lines and of their symmetries leads us to a plausible identification of the nature of the molecular motions involved in the flip-flops.
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