硅醇
高分子化学
倍半硅氧烷
吡那考
材料科学
化学
有机化学
催化作用
聚合物
作者
Huaming Wang,Guohua Hang,Jiawei Hu,Yuan Gao,Lei Li,Sixun Zheng
出处
期刊:ACS applied polymer materials
[American Chemical Society]
日期:2023-05-29
卷期号:5 (6): 4274-4287
被引量:5
标识
DOI:10.1021/acsapm.3c00456
摘要
Two well-defined POSS diamines were synthesized with phenyl (Ph) and iso-butyl (i-Bu) POSS trisilanols as the starting compounds. This approach involves the protection and deprotection of silanol hydroxyl groups with phenylboronic acid and pinacol, followed by the silylation of silanol hydroxyl groups with mono- and dichlorosilanes. With this route of synthesis, two well-defined divinyl POSS macromers were obtained, as evidenced by 1H, 29Si NMR, and mass spectroscopy. These two divinyl POSS macromers were further functionalized into well-defined POSS diamines via the Heck reaction with p-bromoaniline. The successful synthesis of POSS diamines enabled the synthesis of organic–inorganic polyimides with the POSS cages in the main chains. More importantly, the syntheses of these two POSS diamines allowed the examination of the effect of POSS R groups (i.e., Ph and i-Bu) on the morphologies and thermomechanical and dielectric properties of organic–inorganic polyimides. Notably, the types of POSS R groups exerted a profound impact on the morphologies and properties of the organic–inorganic polyimides.
科研通智能强力驱动
Strongly Powered by AbleSci AI