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Updated: Sep 19, 2025

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Preparation of Binary and Ternary Deep Eutectic Systems
Published on: October 31, 2019
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结网在深层欧性溶剂的动态异质性中的重要性
Allison Stettler1, Gary A Baker2, G J Blanchard1
1Department of Chemistry, Michigan State University, East Lansing, Michigan 48824-1322, United States.
The journal of physical chemistry. B
|June 16, 2025
概括
深度欧溶剂 (DESs) 呈现出动态异质性,其中染色体旋转扩散偏离了散积粘度. 这种行为受到联网和胆化物 (ChCl) 度的影响.
科学领域:
- 物理化学 物理化学
- 材料科学 材料科学 材料科学
- 超分子化学 超分子化学
背景情况:
- 深度环氧化溶剂 (DES) 正在成为具有独特溶解性能的调节媒介.
- 了解DES组成,局部结构和溶液动态之间的关系对于其应用至关重要.
- 之前的研究表明,DES中存在复杂的动态,这些动态可能与粘度等大量宏观性质不一致.
研究的目的:
- 为了研究中性,阴离子和阴离子染色体在胆化/1,3-二醇 (ChCl/PD) DESs.中的组成依赖的旋转扩散动态.
- 通过与其他DES系统进行比较,评估键供体 (HBD) 结构和基群密度对DES特性的影响.
- 阐明胆化物 (ChCl) 在破坏DESs内部的键网络中的作用.
主要方法:
- 利用时间分辨率光谱法测量了烯 (中性),素725 (阴性) 和二光素 (阳性) 的旋转扩散动态.
- 检查了这些动态在各种组成的胆化物/1,3-propanediol (ChCl/PD) DESs.
- 结果与胆化物/乙烯基醇 (ChCl/EG) 和胆化物/甘油 (ChCl/Gly) DES系统的数据进行了比较.
主要成果:
- 所有测试的染色体的旋转扩散动力学与ChCl/PD DESs的大量粘度没有相关,这表明了动态异质性.
- HBD和基群密度的结构显著影响了DES的特性.
- 在所有研究的DES系统中,大约15mol%的临界度ChCl被确定为破坏所有结网络.
结论:
- 德斯表现出固有的动态异质性,其中局部溶解物运动与散装粘度脱.
- 联网结构是DES特性的一个关键决定因素,由HBD调节.
- 胆化物在网络中断中发挥着关键作用,影响了DESs的局部和散装特性.
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