DNA电荷转移:电阻的计算公式 & Marcus电子转移理论

时间:2020-12-15 04:30:59

更新:26 APR 2016

参考文献:

[1] Mechanisms for DNA Charge Transport. Chem. Rev. 2010, 110, 3, 1642-1662

【电子转移机理】

Superexchange: coherent orbital-mediated tunneling, where, for electron (hole) transport, the high-energy LUMOs(HOMOs) on the pathway are virtually occupied, allowing a probability and corresponding rate of transmission from the donor to the acceptor.([1]1652)

大意即Superexchange(固体物理学的超交换)即由于轨道耦合(coherent orbital-mediated tunneling)电荷从donor的最高轨道迁移到acceptor的轨道。

电子转移速率表示为:

\(k_{CT}=v_nv_e\)

其中

\(v_n=exp\left[\dfrac{(\Delta G +\lambda)^2}{4\pi \lambda RT}\right]\)

\(v_e=\dfrac{2\pi}{\hbar\sqrt{4\pi \lambda RT}}|H_{DA}^0|^2exp(-\beta d)\)