Abstract
The temperature influence of the quantum yield of the planar b* stete of DMABIN in various polar solvents has been interpreted within the framework of a model of deexcitation by charge transfer reaction in the absence of a potential barrier. Rate parameters characterizing the TICT state have been deduced from the kinetic study of the temporal evolution of the two emission bands: the rate constant for the backward b* ← a* reaction has been determined as well as its activation energy which is correlated to the stabilization of the TICT state by dipolar interaction with the medium.
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