对溶剂和超和对卡巴马西平聚合行为的影响进行分子动力学模拟
1School of Chemistry, University of Hyderabad, Hyderabad 500 046, India. manjusharma@uohyd.ac.in.
Physical chemistry chemical physics : PCCP
|November 17, 2025
概括
分子动力学模拟揭示了溶剂和超和如何影响卡巴马兹 (CBZ) 双元体的形成. 了解这些卡巴马泽 (CBZ) 双质结构是控制结晶和多态发育的关键.
科学领域:
- * 制药科学 制药科学
- * 物理化学 物理化学
- * 计算化学 计算机化学
背景情况:
- * 碳胺 (CBZ) 呈现多态性,这种现象受到结晶条件的影响.
- * 不同的多态体源于固态中的不同分子排列.
- *理解溶液阶段的行为对于控制固态形式至关重要.
研究的目的:
- * 通过分子动力学模拟,研究超和溶剂对卡巴马泽 (CBZ) 二元体形成的影响.
- * 为了将溶液中形成的CBZ二元类型与不同CBZ多态的核化相关联.
- *阐明溶剂-溶剂和CBZ-溶剂相互作用在集群形成中的作用.
主要方法:
- *使用了分子动力学 (MD) 模拟.
- *研究集中在不同溶剂 (乙,乙基乳酸盐,乙醇,亚尼索尔,N,N-二甲基形式胺) 中的卡巴马西平 (CBZ).
- *分析不同超和度下的结,二元类型 (FI,FII,FIII) 和集群动态.
主要成果:
- *根据结识出了四种类型的卡巴马泽 (CBZ) 集群:单HB,HB二聚体,HB三聚体和HB四聚体.
- *HB二元促进环重叠,导致在乙和高超和性乙基乳酸中产生FIII型二元.
- *溶剂-CBZ相互作用强度决定了FI/FII二元体的形成,而溶剂-溶剂相互作用影响了分子动力学.
结论:
- * 碳氨酸 (CBZ) 双质结构,受溶剂和超和的影响,作为聚合态结晶的合成子.
- * 溶剂特性显著影响溶液中的卡巴马西 (CBZ) 双元体的类型和稳定性.
- * 这项研究提供了通过解决方案工程控制卡巴马泽 (CBZ) 多态性的见解.
相关概念视频
Entropy and Solvation
8.2K
The process of surrounding a solute with solvent is called solvation. It involves evenly distributing the solute within the solvent. The rule of thumb for determining a solvent for a given compound is that like dissolves like. A good solvent has molecular characteristics similar to those of the compound to be dissolved. For example, polar solutions dissolve polar solutes, and apolar solvents dissolve apolar solutes. A polar solvent is a solvent that has a high dielectric constant (ϵ...
8.2K
Factors Affecting Solubility
36.6K
Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Chȃtelier’s principle. Consider the dissolution of silver iodide:
36.6K
Solubility
20.8K
Solution, Solubility, and Solubility Equilibrium
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules,...
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules,...
20.8K
Solution Equilibrium and Saturation
21.4K
Imagine adding a small amount of sugar to a glass of water, stirring until all the sugar has dissolved, and then adding a bit more. You can repeat this process until the sugar concentration of the solution reaches its natural limit, a limit determined primarily by the relative strengths of the solute-solute, solute-solvent, and solvent-solvent attractive forces. You can be certain that you have reached this limit because, no matter how long you stir the solution, undissolved sugar remains. The...
21.4K
Colloidal precipitates
4.8K
The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
4.8K
Factors Affecting Dissolution: Polymorphism, Amorphism and Pseudopolymorphism
649
Polymorphism refers to the existence of a drug substance in multiple crystalline forms, known as polymorphs. Recently, this term has been expanded to include solvates (forms containing a solvent), amorphous forms (non-crystalline forms), and desolvated solvates (forms from which the solvent has been removed).
Some polymorphic crystals possess lower aqueous solubility than their amorphous counterparts, leading to incomplete absorption. For instance, the oral suspension of Chloramphenicol, which...
Some polymorphic crystals possess lower aqueous solubility than their amorphous counterparts, leading to incomplete absorption. For instance, the oral suspension of Chloramphenicol, which...
649


