Constrained subsystem density functional theory.

Constrained subsystem density functional theory.
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约束子系统密度泛函理论。

DOI:
10.1039/c6cp00528d
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发表时间:
2016
期刊:
Physical chemistry chemical physics : PCCP
影响因子:
--
通讯作者:
M. Pavanello
M. Pavanello
中科院分区:
--
文献类型:
--
作者:
Pablo Ramos;M. Pavanello

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约束子系统密度泛函理论(CSDFT)允许使用约束DFT方法的机器计算电荷转移反应的非绝热态,并且同时能够通过子系统DFT方案将这种非绝热态嵌入分子环境中。选择CSDFT首字母缩略词是为了反映这样一个事实,即在子系统DFT方法之上,对每个子系统应用约束势。我们表明,CSDFT可以成功地解决复杂的单链DNA完整的骨干系统,并产生非绝热状态的异国情调的一个洞定位在磷酸基团以及核碱基。CSDFT将是有用的研究人员需要评估的电荷转移耦合系统在凝聚相环境中的环境效应。
Constrained Subsystem Density Functional Theory (CSDFT) allows to compute diabatic states for charge transfer reactions using the machinery of the constrained DFT method, and at the same time is able to embed such diabatic states in a molecular environment via a subsystem DFT scheme. The CSDFT acronym is chosen to reflect the fact that on top of the subsystem DFT approach, a constraining potential is applied to each subsystem. We show that CSDFT can successfully tackle systems as complex as single stranded DNA complete of its backbone, and generate diabatic states as exotic as a hole localized on a phosphate group as well as on the nucleobases. CSDFT will be useful to investigators needing to evaluate the environmental effect on charge transfer couplings for systems in condensed phase environments.
第一原理在天然和大小扩展的DNA中用于孔转移的有效电子耦合。
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影响因子: --
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