Preparation of Polyhedral Oligomeric Silsesquioxanes Containing Carboxyl Side-Chain Groups and Isolation of a Cage-Like Octamer Using Clay Mineral
作者:Jiahao Liu、Yoshiro Kaneko
DOI:10.1246/bcsj.20180092
日期:2018.7.15
(T8-POSS) and that from acidic conditions contained cage-like decamer (T10-POSS) and dodecamer (T12-POSS). On the other hand, polysilsesquioxanes with number average molecular weights of 1.25 × 104 or 1.43 × 104 were obtained when the hydrolytic condensation of TESPSA was performed in the presence of non-bulky base (sodium hydroxide) or acid (hydrochloric acid) catalysts, respectively, in water as a solvent
3-(三乙氧基甲硅烷基)丙基琥珀酸酐(TESPSA)在水中使用大体积碱或酸催化剂(如四正丁基氢氧化铵(n-Bu4NOH)或三氟甲磺酸)水解缩合,得到含有多面体低聚倍半硅氧烷(POSSs)的混合物) 作为主要产品。碱性条件下得到的混合物含有笼状八聚体(T8-POSS),酸性条件下得到的混合物含有笼状十聚体(T10-POSS)和十二聚体(T12-POSS)。另一方面,在非大体积碱(氢氧化钠)或酸(盐酸)催化剂存在下,TESPSA水解缩合得到数均分子量为1.25×104或1.43×104的聚倍半硅氧烷。 ,以水为溶剂。此外,