Organic–Inorganic Polyimides with POSS Cages in the Main Chains: An Impact of POSS R Groups on Morphologies and Properties
Organic–Inorganic Polyimides with POSS Cages in the Main Chains: An Impact of POSS R Groups on Morphologies and Properties
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DOI：
10.1021/acsapm.3c00456
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发表时间：
2023-05
影响因子：
5
通讯作者：
Huaming Wang;Guohua Hang;Jiawei Hu;Yuan Gao;Lei Li;Sixun Zheng
中科院分区：
文献类型：
--
作者：
Huaming Wang;Guohua Hang;Jiawei Hu;Yuan Gao;Lei Li;Sixun Zheng
Two well-defined POSS diamines were synthesized with phenyl (Ph) andiso-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 by1H,29Si NMR, and mass spectroscopy. These two divinyl POSS macromers were further functionalized into well-defined POSS diaminesviathe Heck reaction withp-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 andi-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.
