TY - JOUR
T1 - Biradical spin dynamics with distance-dependent exchange interaction and electron transfer efficiency
AU - Bittl, Robert
AU - Schulten, Klaus J
PY - 1990/10/12
Y1 - 1990/10/12
N2 - The spin dynamics and reaction kinetics of photogenerated zwitterionic biradicals of the type 2A-(CH2)n2D+ (n = 8, 9, 10) are described for a model which assumes the same AD distance dependence for a "through space" exchange interaction and for the efficiency of electron back-transfer to the singlet ground state 1A(CH2)n1D and to a triplet excited state 3A*(CH2)n1D. The model is independent of the length n of the polymethylene chain and accounts well for the three type of observation on the biradicals: the mono-exponential character of the biradical decay, the life time associated with this decay, and the magnetic field dependence of the yield of the triplet excited state.
AB - The spin dynamics and reaction kinetics of photogenerated zwitterionic biradicals of the type 2A-(CH2)n2D+ (n = 8, 9, 10) are described for a model which assumes the same AD distance dependence for a "through space" exchange interaction and for the efficiency of electron back-transfer to the singlet ground state 1A(CH2)n1D and to a triplet excited state 3A*(CH2)n1D. The model is independent of the length n of the polymethylene chain and accounts well for the three type of observation on the biradicals: the mono-exponential character of the biradical decay, the life time associated with this decay, and the magnetic field dependence of the yield of the triplet excited state.
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U2 - 10.1016/0009-2614(90)85289-O
DO - 10.1016/0009-2614(90)85289-O
M3 - Article
AN - SCOPUS:0040701570
SN - 0009-2614
VL - 173
SP - 387
EP - 392
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 4
ER -