Abstract

Amino-containing oligosilsesquioxanes are synthesized by the hydrolytic polycondensation of 3‑aminopropyltriethoxysilane and its cocondensation with phenyltrimethoxysilane in ethanol. According to ¹H and ²⁹Si NMR spectroscopy, the oligomers contain incomplete cyclochain structures along with ladder fragments. It is suggested that the spontaneous gelation of the oligomers during long-term storage is due to the intermolecular interactions of siloxane chains with silanol and aminopropyl groups.

中文翻译：

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带有 3-氨基丙基的低聚倍半硅氧烷

摘要

含氨基的低聚倍半硅氧烷是通过 3-氨基丙基三乙氧基硅烷的水解缩聚反应及其与苯基三甲氧基硅烷在乙醇中的共缩聚反应合成的。根据¹ H 和²⁹ Si NMR 光谱，低聚物包含不完整的环链结构以及梯形碎片。这表明低聚物在长期储存期间的自发凝胶化是由于硅氧烷链与硅烷醇和氨基丙基的分子间相互作用。