Hole Conductivity in Heterogeneous DNA Fragments
作者： V.D. Lakhno , A.I. Zhukov , O.A. Ponomarev , A.S. Shigaev
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摘要: The characteristics of cation radical (hole) migration in heterogeneous DNA were investigated on the basis Kubo formula, which correlation functions obtained from solutions systems Bogoliubov hierarchy. cutting hierarchy was carried out by excepting correlations third and higher order. system non-linear differential equations both analytically numerically. environment polarization, caused interaction holes with base pairs vibrations, shown to play key role transport processes. energy can ten-fold exceed vibration energy. transfer rate between adjacent bases one-dimensional case be almost independent nature behavior more distant pairs. charge probability amplitude oscillates picosecond timescale. Nonetheless, rates hole transfer, averaging over these oscillations, turned very close experimental data. calculated dependence two guanine number intervening adenine also good agreement Besides, temperature investigated. Hopping mechanism make main contribution process at 300 K.
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core.ac.uk参考文章(53)
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