Study of the Supramolecular Architecture-Directed Synthesis of a Well-Defined Triple-Chain Ladder Polyphenylsiloxane
Study of the Supramolecular Architecture-Directed Synthesis of a Well-Defined Triple-Chain Ladder Polyphenylsiloxane
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超分子结构定向合成明确的三链梯状聚苯基硅氧烷的研究
DOI：
10.1021/ma100145j
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发表时间：
2010-03-09
期刊：
影响因子：
5.5
通讯作者：
Zhang, Rongben
中科院分区：
文献类型：
--
作者：
Ren, Zhongjie;Xie, Ping;Zhang, Rongben
High molecular weight (Mw) triple-chain ladder polyphenylsiloxane (TCLP) was synthesized by a supramolecular architecture-directed approach. First, a bis(phenyldihydroxysiloxy)dimethoxysilane ladder monomer was self-assembled via hydrogen bonding interactions in acetonitrile/toluene (1:1, v/v) solution to form a ladder superstructure (LS). Then the LS was used as a template to direct the whole polymerization process. Lyophilization and surface-enhanced synchronous growth polycondensation process of the LS gave a ladder dimethoxysiloxy-bridged polyphenylsiloxane (DCLP) with gaseous triethylamine as condensation catalyst. Then DCLP was hydrolyzed to form a triple-chain ladder superstructure (TCLS), which was further converted into the target TCLP via subsequent in situ dehydration condensation. The three ladder entities formed during the polymerization, that is, LS, DCLP, and TCLP, have been well characterized. X-ray diffraction shows two Bragg reflections representing the ladder width and ladder thickness,...
