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Updated: Jun 26, 2025

Synthesis and Characterization of Supramolecular Colloids

Synthesis and Characterization of Supramolecular Colloids

Published on: April 22, 2016

基于基替代的子-基-基-基-基-基-基-基-基-基-基-基-基-基-基-基-基-基-基-基-基-基-基-基-基-基-基-基-基-基-基-基-基-基-基-基-基-基-基-基-基-基-基-基

Rina Tajikawa¹, Ichiyo Tokuami¹, Mayu Nagao¹

¹Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.

Langmuir : the ACS journal of surfaces and colloids

|May 17, 2024

概括

基替代星形多面体寡合体丝素 (POSS) 衍生物中的较短的链接物增强了溶解性和热稳定性. 这些POSS化合物在聚合物混合物中表现出改进的表面分离,提供可调节的材料特性.

科学领域:

材料科学材料科学材料科学
聚合物化学聚合物化学
纳米技术纳米技术

背景情况:

多面体寡合性丝素 (POSS) 的特性是由有机替代剂决定的.
之前的工作合成了以异布替代的POSS衍生物,具有不同长度的异形链接器.
星形POSS衍生品为材料修改提供了独特的结构优势.

研究的目的:

合成和表征C3和C6结合的替代星形POSS衍生物.
为了比较替代POSS与同位素替代POSS的特性.
研究连接器长度对POSS溶解度,热稳定性,薄膜形成和PMMA表面分离的影响.

主要方法:

水化反应合成替代的星形POSS衍生物.
在各种有机溶剂 (,THF,烯) 中的可溶性测试.
差分扫描热度计 (DSC) 和热重度计分析 (TGA) 用于测量热性能.
用于光学和结构分析的薄膜造和回火.
接触角度测量和X射线光电子光谱 (XPS) 用于PMMA混合物的表面分析.

主要成果:

与C6链接剂相比,-POSS衍生物中较短的C3链接剂在更广泛的溶剂中提高了溶解度.
带有较短链接器的Phenyl-POSS表现出更高的分解温度,并在回火后形成透明膜.
带有较短链接器的POSS衍生品在聚甲酸 (PMMA) 薄膜中显示出更大的表面分离,这归因于驱动的效应和预测的溶解度.

结论:

替代星形POSS中的链接器长度显著影响溶解度,热稳定性和薄膜形态.
较短的链接器促进了增强的热性能和化膜的提高透明度.
在PMMA混合物中表面分离的程度受到链接器长度的影响,较短的链接器导致更大的分离.

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Controlling the Size, Shape and Stability of Supramolecular Polymers in Water

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