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Updated: Jan 16, 2026

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选择性溶剂中POSS-合物分子的可调整的形态特性:一个原子分子动力学模拟研究

Junhao Dai^1,2, Wen Tang^1,2, Xianbo Huang³

¹South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, South China University of Technology, Guangzhou 510640, China.

The journal of physical chemistry. B

|October 2, 2025

概括

我们开发了一种新的计算方法来模拟多面体的寡合性silsesquioxanes-peptide (POSS-peptide) 分子. 这可以理解它们的结构和溶剂如何影响它们在溶液中的行为,揭示了独特的结构动态相关性.

科学领域:

材料科学材料科学材料科学
计算化学计算化学
聚合物科学聚合物科学

背景情况:

具有定义架构的巨大分子提供了独特的结构-动力学-属性关系.
多面体的寡合性丝二素 (POSS) - 联分子将刚性POSS单元与灵活的序列相结合.
了解这些混合宏分子的溶液相行为需要先进的计算建模.

研究的目的:

为POSS-分子开发一个标准化和可扩展的全原子力场参数化工作流.
通过分子动力学模拟来研究POSS-的结构性质和溶液相行为.
为未来对更大的超分子结构的研究提供方法论基础.

主要方法:

集成的量子化学计算来获得POSS单元和原子电荷的精确力场参数.
将参数化框架应用于水或DMF溶剂中的5个代表性的POSS-分子.
进行了全原子分子动力学模拟,并构建了构造性自由能量景观.

主要成果:

开发的力场成功对POSS-分子进行了参数化,用于准确的模拟.
合规的自由能量景观揭示了分子结构和溶剂极性如何共同调节合规偏好.
观察到由POSS-相互作用驱动的不寻常的结构动力学相关性行为.

结论:

这项研究为溶液中POSS-的构造丰富性提供了关键的见解.
开发的方法允许精确模拟这些复杂的巨大分子.
这项工作为设计和探索基于POSS-的新型超分子材料奠定了基础.

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