球体阴离子和阴离子脂质体中的电双层结构,扩散和泽塔潜力:使用经典密度函数理论对受限制原始模型和溶剂受限制原始模型的比较研究
Ali Asghar Mohammadi1, Ezat Keshavarzi1
1Department of Chemistry, Isfahan University of Technology, 84156-83111 Isfahan, Iran.
Langmuir : the ACS journal of surfaces and colloids
|August 28, 2025
概括
使用受限原始模型进行修改的基本测量理论模型. 由于溶剂结构导致的离子吸附和电荷逆转增加,影响脂质体系统.
科学领域:
- * 物理化学
- * 体和表面科学
- * 计算化学
背景情况:
- * 修改基本测量理论 (MFMT) 应用于脂质体模型.
- * 脂质体在受限原始模型 (RPM) 和溶剂受限原始模型 (SRPM) 框架内进行研究.
- * 这些系统包含各种离子 (A+,C2+,B-) 和溶剂分子 (D) 的对称/不对称电解质.
研究的目的:
- * 研究度,脂质体表面电荷,腔体大小和膜厚度对电双层 (EDL) 特性的影响.
- * 为了比较RPM和SRPM,区分溶剂共体和介电常数在库伦相互作用中的作用.
- * 分析平均静电电位 (MEP),扩散电位和zeta电位.
主要方法:
- *使用修改基本措施理论 (MFMT) 进行理论建模.
- 在RPM和SRPM条件下对电解质混合物中的脂质体进行模拟.
- * 分析EDL结构,离子分布和静电电位.
主要成果:
- * 增加的表面电荷和度增加了对电离子吸附和EDL振荡,减少了MEP,并可能导致电荷逆转 (CI).
- * 脂质体腔内的EDL结构比外膜表面更紧.
- * 由于溶剂的分子性,SRPM表现出放大效应,包括离子分层,更快的MEP衰变,以及在RPM中没有观察到的CI.
结论:
- * 溶剂分子性对脂质体系统中的EDL结构和静电电位有显著影响.
- 与RPM相比,SRPM提供了更详细的离子行为理解.
- * 这些发现对于优化脂肪体药物递送系统的稳定性和功能至关重要.
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