✦ LIBER ✦

The influence of the diffusional anisotropy on bimolecular reaction rate of neutrals in molecular crystals: Triplet—triplet annihilation in anthracene

✍ Scribed by A. Mozumder; Simon M. Pimblott

Publisher: Elsevier Science
Year: 1990
Tongue: English
Weight: 498 KB
Volume: 167
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(90)85466-p

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✦ Synopsis

The effect of anisotropic diffusion upon the geminate survival probability of a pair of neutral particles is discussed. A concise, if simple, expression for the bulk recombination rate coefficient is derived using an integral relationship between it and the geminate stival probability. The resultant equation is similar to that for isotropic media. but differs in detail. The bimolecular annihilation of triplet excitons in anthracene crystals is modelled using the present treatment and the predict&l reaction ellipsoid suggests a diffusive pictnre for excitonic motion.

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