Theoretical formulation for electron transfer coupled to multiple protons: Application to amidinium-carboxylate interfaces
Theoretical formulation for electron transfer coupled to multiple protons: Application to amidinium-carboxylate interfaces
复制标题
与多个质子耦合的电子转移的理论公式:在脒-羧酸盐界面的应用
DOI:
10.1063/1.1376143
复制
发表时间:
2001
影响因子:
4.4
通讯作者:
S. Hammes‐Schiffer
中科院分区:
文献类型:
--
作者:
I. Rostov;S. Hammes‐Schiffer
This paper presents a theoretical formulation for electron transfer coupled to the motion of multiple protons. This theory is applied to proton-coupled electron transfer (PCET) through amidinium–carboxylate salt bridges, where the electron transfer reaction is coupled to the motion of two protons at the proton transfer interface. The rate for the donor–(amidinium–carboxylate)–acceptor system is found to be substantially slower than the rate for the switched interface donor–(carboxylate–amidinium)–acceptor system. This trend is consistent with experimental data for photoinduced PCET in analogous systems. The calculations indicate that this difference in rates is due mainly to the opposite dipole moments at the proton transfer interfaces for the two systems, leading to an endothermic reaction for the donor–(amidinium–carboxylate)–acceptor system and an exothermic reaction for the donor–(carboxylate–amidinium)–acceptor system. The deuterium kinetic isotope effects are found to be moderate (i.e., kH/kD<3) for...
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DOI:
10.1016/s0005-2728(00)00066-9
发表时间:
2000-05
期刊:
Biochimica et biophysica acta
影响因子:
--
作者:
D. Zaslavsky;R. Gennis
通讯作者:
D. Zaslavsky;R. Gennis
影响因子:
56.9
作者:
HOWELL, EE;VILLAFRANCA, JE;KRAUT, J
通讯作者:
KRAUT, J
DOI:
10.1016/s0005-2728(00)00069-4
发表时间:
2000-05
期刊:
Biochimica et biophysica acta
影响因子:
--
作者:
Cecilia Tommos;Gerald T. Babcock
通讯作者:
Cecilia Tommos;Gerald T. Babcock
影响因子:
2.9
作者:
BABCOCK, GT;BARRY, BA;YOCUM, CF
通讯作者:
YOCUM, CF
DOI:
10.1073/pnas.90.8.3680
发表时间:
1993-04-15
影响因子:
11.1
作者:
PUGLISI, JD;CHEN, L;WILLIAMSON, JR
通讯作者:
WILLIAMSON, JR