对离子和离子表面活性剂的粗粒度力场的贝叶斯优化,基于可极化水模型
Yi Dong1, Zhiqing Zhao1, Ming Ma1
1Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, 19 Xin-Jie-Kou-Wai Street, Beijing 100875, China.
Journal of chemical theory and computation
|January 26, 2026
概括
本研究提出了一种有效的工作流程,用于为离子溶液和表面活性剂开发精确的粗粒力场. 新方法优化了离子和表面活性剂的参数,改善了复杂的带电分子的模拟.
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.
- 物理化学 物理化学
背景情况:
- 为离子溶液开发精确的粗粒度 (CG) 力场 (FF) 是复杂的,因为需要同时对多个相互作用离子进行参数化.
- 现有的方法难以实现不同离子系统和表面活性剂所需的可转移性和精度.
研究的目的:
- 引入一个高效的工作流来优化对离子和离子表面活性剂的CG力场.
- 为了能够准确地模拟含有化 (NaCl),化 (NaBr),二硫酸 (SDS) 和三甲基化/化 (DTAC/DTAB) 的溶液.
主要方法:
- 结合了全球贝叶斯优化与本地元多线性插入和拉丁式超立方体采样.
- 利用一个可偏化的CG水模型,对范德瓦尔斯相互作用采用零碎的摩尔斯潜力.
- 针对NaCl,NaBr,SDS和DTAC/DTAB的优化CG力场.
主要成果:
- 实现了批量溶液特性如密度,表面张力,介电常数和盐溶液的透压力的准确复制.
- 成功捕获了SDS和DTAC/DTAB表面活性剂的细胞结构.
- 在溶液/空气接口上准确预测表面张力.
结论:
- 开发的工作流程为离子溶液和表面活性剂提供准确和可转移的CG力场.
- 这种方法为为更复杂的带电分子创建FF奠定了基础.
- 能够在各种化学和生物系统中进行改进的分子模拟.
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