Coarse-grained simulations for organic molecular liquids based on Gay-Berne and electric multipole potentials

Coarse-grained simulations for organic molecular liquids based on Gay-Berne and electric multipole potentials
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基于 Gay-Berne 和电多极势的有机分子液体粗粒度模拟

DOI:
10.1007/s00894-012-1562-5
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发表时间:
2013-02
影响因子:
2.2
通讯作者:
Li, Guohui
Li, Guohui
中科院分区:
化学4区
文献类型:
--
作者:
Xu, Peijun;Shen, Hujun;Yang, Lu;Ding, Yang;Li, Beibei;Shao, Ying;Mao, Yingchen;Li, Guohui

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基于各向异性Gay-Berne势(GB)和电多极势(EMP)的CH3SH、CH3CHO和CHCl3液体的粗粒度研究表明,粗粒度模型能够定性地再现原子模型(阿米巴极化力场)所获得的结果,并大大节省了计算时间。应该指出的是,粗粒模型的准确性对各向异性GB粒子的定义和EMP位置的选择有多好非常敏感。图3 CH3SH均二聚体的CG和全原子模拟计算的VDW分子间相互作用能的比较
Coarse-grained studies of CH3SH, CH3CHO and CHCl3liquids, based on anisotropic Gay-Berne (GB) and electric multipole potentials (EMP), demonstrate that the coarse-grained model is able to qualitatively reproduce the results obtained from the atomistic model (AMOEBA polarizable force field) and allows for significant saving in computation time. It should be pointed out that the accuracy of the coarse-grained model is very sensitive to how well the anisotropic GB particle is defined and how satisfactorily the EMP sites are chosen.FigureComparison of vdW intermolecular interaction energies calculated from the CG and all-atom simulations for CH3SH homo-dimers
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