In this paper, the Lewis base character of 3-aminopropyltrimethoxysilane (3-APTMS), an imine derivative of siloxane, and an indole monomer were shown to enable the reduction of gold cations in acetone. The Lewis acid–base adduct of indole monomers and gold formed a polyindole–gold nanoparticle sol. Similarly, the Lewis acid–base adduct of 3-APTMS and gold enabled the formation of gold nanoparticles in the presence of acetone. The polyindole–gold nanoparticle sol and siloxane–gold nanoparticles underwent self-assembly into a polymeric nanofluid that was suitable for casting membranes. The use of these membranes as a potentiometric ion sensor for both cations and anions was considered; a common nonspecific ion exchange molecule, sodium tetraphenylborate, and the polymeric nanofluid were used to prepare an anion sensor and a cation sensor.

中文翻译：

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用于生物医学膜的自组装硅氧烷-聚吲哚-金纳米颗粒聚合物纳米流体的合成

在本文中，3-氨基丙基三甲氧基硅烷 (3-APTMS)、硅氧烷的亚胺衍生物和吲哚单体的路易斯碱特性被证明能够还原丙酮中的金阳离子。吲哚单体和金的路易斯酸碱加合物形成聚吲哚-金纳米颗粒溶胶。类似地，3-APTMS 和金的路易斯酸碱加合物能够在丙酮存在下形成金纳米粒子。聚吲哚-金纳米颗粒溶胶和硅氧烷-金纳米颗粒经过自组装形成适合于浇铸膜的聚合物纳米流体。考虑将这些膜用作阳离子和阴离子的电位离子传感器；使用常见的非特异性离子交换分子四苯基硼酸钠和聚合物纳米流体制备阴离子传感器和阳离子传感器。