主链掺杂氧原子聚硅烷的研究进展

介绍了一类新型有机硅聚合物主链掺杂氧原子聚硅烷的合成与性质.该类聚合物是通过氧原子有规律地插入聚硅烷主链,形成具有氧杂低聚硅烷的序列结构(-(SiMe2)mO]n-).聚合物的主链呈现了聚硅烷以及聚硅氧烷的杂化体结构.通过对此类聚合物性质的研究,能够获得有关此类聚合物行为的知识,从而进一步促进人们对聚硅烷和聚硅氧烷化学性质的了解.总结了此类聚合物的两类有效合成方法:通过α,ω-二功能基封端的线性硅烷低聚体缩聚反应法以及氧杂环硅烷单体的开环聚合反应法,包括氧杂环硅烷单体的开环聚合平衡和反应机理.讨论了此类聚合物的表征、热稳定性及其结构形态.在结论部分展望了此类聚合物的预期应用前景.

Progress in Organic Polysilanes Interrupted by Oxygen

A novel type of organosilicone polymers, polysilane interrupted by oxygen in the skeleton regularly is introduced. The synthetic methods and properties of these new polymers are summarized. Since their structure is a hybrid of polysilane and polysiloxane, the knowledge about the behavior of these polymers permits us a deeper understanding of the chemistry of polysiloxanes and polysilanes. Two general synthetic methods of these polymers, including the poly condensation of a, co-functionalized linear oligosilanes and the ring opening polymerization of cyclic silaethers, as well as mechanism and equilibria of the ring-opening polymerization of (SiMe2O)2, are discussed. Attention is also devoted to characterization, thermal properties and morphology. The prospective applications of these polysilanes are also discussed.