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The Journal of Chemical Physics
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Studies of excited state charge-transfer interactions with picosecond laser pulses

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Abstract

The methods of picosecond laser photolysis have been employed to study the inter- and intramolecular charge-transfer interaction between excited anthracene and N,N-diethylaniline in polar as well as nonpolar solvents. The formulation of reaction kinetics coupled with molecular reorientational motion is developed. The experimental results, at low diethylaniline concentrations, are analyzed in terms of diffusion model and Noyes molecular pair model. The transient behavior due to instantaneous flux in early time regions is clearly evident. The values of critical intermolecular distance and primary rate constant for electron transfer are determined and are consistent for all solutions studies. In the high diethylaniline concentration region, analysis of orientational relaxation times and the rate of charge-transfer reactions clearly reveals the dynamic nature of the interacting processes. Copyright © 1975 American Institute of Physics.

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The Journal of Chemical Physics

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