Energieübertragung zwischen gleich- und ungleichartigen Molekülen in Lösung. I. Theorie / Energy Transfer Among Like and Unlike Molekules in Solution

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Abstract
A theory presenting uniform description of the excitation energy transfer among like (concentration depolarization of photoluminescence) and unlike (quenching by foreign absorbing substances) molecules in solutions is given. Based on the shell model of a luminescent centre, expressions for the emission anisotropy as well as the quantum yield of photoluminescence have been obtained. The dependence of the probability of resonance excitation energy transfer on the mutual orientation of the transition moments of the interacting sensitizer and acceptor molecules, as well as the fluctuations of the concentration of the acceptor molecules have been taken into account

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