在外部电场下,FOX-7的分子结构,电子特性和分解机制是根据密度函数理论计算的
Jun Chen1, Jiani Xu1, Tingting Xiao1
1College of Safety Science and Engineering, Nanjing Tech University, Nanjing, 211816, China.
施加正外部电场 (EEF) 提高了FOX-7分子的爆炸性能和热稳定性. 这项研究挑战了EEF下对爆炸物的传统观点,提供了新的研究方向.
科学领域:
- 计算化学计算化学
- 材料科学 材料科学 材料科学
- 能量材料 能量材料
背景情况:
- 研究外部电场 (EEF) 对FOX-7分子的影响.
- 检查分子结构,电子特性,分解路径,边界分子轨道 (FMOs) 和状态密度 (DOS).
- 挑战了爆炸物被外部电场破坏稳定的概念.
研究的目的:
- 分析不同正外部电场强度对FOX-7的影响.
- 阐明EEF影响分解过程和热稳定的机制.
- 探索在不损害安全的情况下,提高引爆性能的潜力.
主要方法:
- 在所有计算中使用密度函数理论 (DFT).
- 在B3LYP/6-311G(d,p) 层面进行了结构优化,无论有没有EEF.
- 在优化结构上进行了B3LYP/def2-TZVPP级单点能量计算.
主要成果:
- 积极的EEF显著提高了爆炸性能,并改善了FOX-7的热稳定性.
- 电场增加了分子内转移和C-NO2键断裂的能量屏障.
- 增加的EEF增强了基组的电负性,影响了反应通路和能量障碍.
结论:
- 适当地应用积极的EEF可以提高FOX-7爆炸性能,同时保持热稳定性.
- 这些发现为在外部电场下的高能材料的行为提供了新的见解.
- 建议理解爆炸物在电场中的安全性和应用的范式转变.
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