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关于外部电场对 ε-CL-20 的调节的研究

Jun Chen¹, Jiani Xu¹, Tingting Xiao¹

¹College of Safety Science and Engineering, Nanjing Tech University, Nanjing, 211816, China.

Journal of molecular modeling

|July 29, 2024

概括

外部电场 (EEF) 显著改变了 ε-CL-20 .

科学领域:

计算化学是一种计算化学.
材料科学是一种材料科学.
能量材料是一种能量材料.

背景情况:

ε-CL-20是一种高能材料,在爆炸物和推进剂中具有潜在的应用.
了解外部刺激的影响,如电场,对于预测和控制它的行为至关重要.
之前的研究还没有广泛探讨外部电场对e-CL-20特性的影响.

研究的目的:

研究外部电场 (EEF) 对 ε-CL-20 的分子结构,电子特性和稳定性的影响.
阐明EEF影响e-CL-20的反应性和光谱特征的机制.
为 ε-CL-20 在不同电场条件下的设计和应用提供理论见解.

主要方法:

用密度函数理论 (DFT) 的计算来研究 ε-CL-20.
使用B3LYP/6-311+G(d,p) 和B3LYP/def2-TZVPP方法进行结构优化和能源计算.
分析包括分子结构,边界分子轨道 (FMOs),全球反应性参数 (GRP),静电潜力,电荷和UV-Vis光谱.

主要成果:

在N16-N24沿线应用的外部电场显著影响了e-CL-20的结构,减少了启动键的长度,并增加了带有正EEF的键顺序和解离能.
阳性EEF会导致LUMO迁移到基侧,以及HOMO从骨架迁移到基侧.
负EEF导致总基负电荷在0.02 a.u.突然增加,这表明由于轨道能量水平的变化,UV-Vis光谱的极化和变化显著.

结论:

外部电场可以通过修改其分子结构和键性质来增强 ε-CL-20 的热稳定性.
电场在 ε-CL-20 中引发了显著的电子再分配和极化,影响了它的反应性和光谱特性.
该研究表明,EEF是一个可行的参数来调整ε-CL-20的特性,为其应用和安全控制提供了新的途径.

关键词:

ε-CL-20-20 是一个密度函数理论密度函数理论能量物质是一种能量物质.外部电场外部电场

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