Synthesis, characterization, and polycondensation of new stable α,ω-organo(bis-silanediols)
作者:Geneviève Cerveau、Sabrina Chappellet、Robert JP Corriu、Bertrand Dabiens
DOI:10.1139/v03-111
日期:2003.11.1
The synthesis and characterization of stable bis(dihydroxymethylsilyl) derivatives are described. These compounds were obtained as microcrystalline powders by controlled hydrolysis in a biphasic medium (ethyl ether water) of the corresponding bis(dimethoxymethylsilyl) organic precursors containing phenyl, biphenyl, stilbenyl, diphenyl acetylene, and diphenylbut-1,3-diyne groups. All the solids obtained
描述了稳定的双(二羟甲基甲硅烷基)衍生物的合成和表征。这些化合物是通过相应的双(二甲氧基甲基甲硅烷基)有机前体在双相介质(乙醚→水)中受控水解而获得的微晶粉末,该有机前体含有苯基、联苯、二苯乙烯基、二苯基乙炔和二苯基丁-1,3-二炔基团。获得的所有固体都表现出层状结构。双硅烷二醇的缩合可以通过在环境温度下在溶液中的氟化物催化或简单地通过在固态下加热来实现。由双硅烷二醇得到的聚硅氧烷与通过相应双二甲氧基硅烷水解缩聚得到的聚硅氧烷进行了比较。TEM 分析证明,热途径导致高度缩聚的固体排列成薄板;此外,在较长的间隔物的情况下,组织由 Si-O-Si 层的排列而不是间隔物控制。X射线研究...