TY - JOUR
T1 - Time-resolved EPR study on reorganization energies for charge recombination reactions in the systems involving hydrogen bonding
AU - Yago, Tomoaki
AU - Kobori, Yasuhiro
AU - Akiyama, Kimio
AU - Tero-Kubota, Shozo
PY - 2003/2/7
Y1 - 2003/2/7
N2 - Hydrogen bonding effects on reorganization energies (λ) in the photoinduced electron donor-acceptor system of duroquinone (DQ)-1,2,4-trimethoxybenzene (TMB) in benzonitrile have been investigated by time-resolved EPR and cyclic voltammetry measurements. The solvent reorganization energies (λ S ) determined for the radical ion pair systems involving the hydrogen-bonded complexes are larger by ∼0.2 eV than those calculated from the Marcus continuum dielectric model. The present results suggest that dissociation of the DQ anion-alcohol hydrogen-bonded complex results in the new component of λ S for the charge recombination reaction in polar solvents.
AB - Hydrogen bonding effects on reorganization energies (λ) in the photoinduced electron donor-acceptor system of duroquinone (DQ)-1,2,4-trimethoxybenzene (TMB) in benzonitrile have been investigated by time-resolved EPR and cyclic voltammetry measurements. The solvent reorganization energies (λ S ) determined for the radical ion pair systems involving the hydrogen-bonded complexes are larger by ∼0.2 eV than those calculated from the Marcus continuum dielectric model. The present results suggest that dissociation of the DQ anion-alcohol hydrogen-bonded complex results in the new component of λ S for the charge recombination reaction in polar solvents.
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U2 - 10.1016/S0009-2614(02)01963-2
DO - 10.1016/S0009-2614(02)01963-2
M3 - Article
AN - SCOPUS:0037422855
VL - 369
SP - 49
EP - 54
JO - Chemical Physics Letters
JF - Chemical Physics Letters
SN - 0009-2614
IS - 1-2
ER -