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Solvent effects on the magnetic-field-dependent reaction yields of photogenerated radical ion pairs

✍ Scribed by H. Staerk; H.-G. Busmann; W. Kühnle; A. Weller

Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
538 KB
Volume
155
Category
Article
ISSN
0009-2614

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✦ Synopsis

A pronounced solvent viscosity and polarity dependence of the magnetic field effect was found for polymethylene-linked radical ion pairs generated by photoinduced intramolecular electron transfer in compounds of the type pyrene-(CH*),-N,N-dimethylaniline, with n = 7-16. This is interpreted in terms of the general radical pair mechanism, i.e. the nuclear hypefine interaction mechanism including a spin-exchange interaction, modulated by the stochastic folding motion of the linking CH2 chain which leads to a "motional deformation" of the reaction yield spectra.

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