Studies on B 1/2 value of pyrene–dimethylaniline radical pair system in single and binary solvents
Chemical Physics Letters(2012)
摘要
B1/2 values of pyrene-dimethylaniline radical pair system in different single and binary solvents have been measured. The data supports the observation of Grampp et al., (Phys.Chem.Chem.Phys. 14 (2012) 3155) in a different system explained on the basis of lowering of local concentration of neutral donor molecules in the dielectrically enriched polar micro-domain around the radical ion pair. In this letter an alternative explanation based on the modulation of size of the polar micro-domain with change in ε has been proposed and the variation of B1/2 in single solvents has been explained on the basis of diffusivity and specific solvent property like H-bonding.
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关键词
solvents,radical pair system,pyrene–dimethylaniline,pyrene–dimethylaniline
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