ISSN:
1573-9171
Keywords:
fullerene C70
;
ternary amines
;
radical ion pairs
;
picosecond laser photolysis
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The kinetics of charge recombination in radical ion pairs C70 −/Am+ (Am isN, N, N′N′-tetramethyl-p-phenylenediamine,p-methoxy-N,N-dimethylaniline,p-methyl-N,N-di-methylaniline,N,N-diethylaniline,N,N-dimethylaniline, and triphenylamine) in chlorobenzene was studied by the picosecond laser photolysis technique. The radical ion states are the products of excitation of charge-transfer complexes between C70 and amines and are also formed by quenching of the singlet excited state of C70 by the amine. The rate constant of electron transfer in the radical ion pair decreases as the free Gibbs energy (ΔG) of the reaction increases and reflects the Marcus-inverted region of the dependence of the rate constant on ΔG. The C70/Am and C60/Am systems are compared.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01431596
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