Abstract

Carrying out quantum chemical calculations, we examined the excitation-energy transfer (EET) in a diphenylethyne-linked porphyrin array. The calculations showed that this transfer is caused by nonadiabatic interaction induced by the rotation around the porphyrin–diphenylethyne bond. This result is consistent with our theory that regards, in contrast to Förster's theory, the EET as a nonadiabatic transition.

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