化学
热重分析
戒指(化学)
硅氧烷
热稳定性
水解
分子
表征(材料科学)
缩合反应
高分子化学
立体化学
有机化学
聚合物
纳米技术
催化作用
材料科学
作者
Zhida Zhang,Xiaoxia Wang,Rong‐Jie Yang,Zhi Qi,Zhida Zhang
出处
期刊:Inorganic Chemistry
[American Chemical Society]
日期:2018-03-20
卷期号:57 (7): 3883-3892
被引量:22
标识
DOI:10.1021/acs.inorgchem.7b03264
摘要
Organic–inorganic hybrid macrocyclic compounds, cyclic polyphenylsilsesquioxanes (cyc-PSQs), have been synthesized through hydrolysis and condensation reactions of phenyltrichlorosilane. Structural characterization has revealed that cyc-PSQs consist of a closed-ring double-chain siloxane inorganic backbone bearing organic phenyl groups. The cyc-PSQ molecules have been simulated and structurally optimized using the Forcite tool as implemented in Materials Studio. Structurally optimized cyc-PSQs are highly symmetrical and regular with high stereoregularity, consistent with the dimensions of their experimentally derived structures. Thermogravimetric analysis showed that these macrocyclic compounds have excellent thermal stability. In addition to these perfectly structured compounds, macrocyclic compounds with the same ring ladder structure but bearing an additional Si–OH group, cyc-PSQs-OH, have also been synthesized. A possible mechanism for the formation of the closed-ring molecular structures of cyc-PSQs and cyc-PSQs-OH is proposed.
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