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8236029 
Journal Article 
Solvent effects on the magnetic-field-dependent reaction yields of photogenerated radical ion pairs 
Staerk, H; Busmann, HG; Kã¼Hnle, W; Weller, A 
1989 
Yes 
Chemical Physics Letters
ISSN: 0009-2614 
ELSEVIER SCIENCE BV 
AMSTERDAM 
155 
6 
603-608 
English 
WOS:A1989T875000018 
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-(CH2)n-N,N-dimethylaniline, with n = 7-16. This is interpreted in terms of the general radical pair mechanism, i.e. the nuclear hyperfine 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. © 1989.