相关实验视频
Updated: Jul 10, 2025

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Preparation of Binary and Ternary Deep Eutectic Systems
Published on: October 31, 2019
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有证据表明,在三元深层eutectics中存在一个L3阶段:AOT的组成诱导的L3-to-Lα过渡
Oliver S Hammond1, Naomi S Elstone1, James Doutch2
1Centre for Sustainable Chemical Technologies & Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK. oliver.s.hammond@bath.edu.
Nanoscale
|November 24, 2023
概括
与表面活性剂结合的深度环氧溶剂 (DES) 形成类似海绵的纳米结构. 增加水含量将它们转化为叶片相,由离子相互作用和曲率变化驱动.
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:
- 深度环氧溶剂 (DES) 可以形成自组装的纳米结构.
- 这些结构类似于在离子液体 (ILs) 中观察到的L3双连续相.
研究的目的:
- 为了研究胆化物:尿素:水 DES 与表面活性剂的自我组装.
- 使用小角度中子散射 (SANS) 描述纳米结构的形成和过渡.
主要方法:
- 在标记的DES溶液上进行小角度中子散射 (SANS).
- 使用Teubner-Strey和盘状模型,拟合散射数据.
- 多重对比SANS分析离子相互作用与表面活性剂头组.
主要成果:
- 纯DES显示没有远程纳米结构.
- 使用AOT表面活性剂的DES表现出L3"海绵"阶段.
- 在DES:水的10比率下,L3-Lα过渡到状相发生.
- 离子相互作用 (Na+,胆+) 影响了表面活性剂主群行为,增加了含水量.
结论:
- 在DES中,L3相通过阴离子-离子相互作用和修改的界面曲率来稳定.
- 水的含量决定了从海绵状结构向状结构的转变.
- 了解这些纳米结构对于材料科学和化学的应用至关重要.
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