Silicon-containing polymers are valuable organic/inorganic polymers with unique physical and chemical properties. Although silicon element ranks as the second most abundant element in the Earth's crust, there are currently limited varieties of silicon-containing polymers, especially functional ones. Herein, the first examples of a new class of organic–inorganic hybrid poly(siloxane amine)s are presented, which consist of alternating siloxane and amine units. Amine–epoxy polymerization of 1,3-bis(3-glycidyloxypropyl)tetramethyldisiloxane with diverse amines provides facile access to well-defined polymers under mild conditions. Thanks to the abundance of functional amines available in nature and industry, we could obtain poly(siloxane amine)s with various pendant groups in a one-pot manner, which enables further clickable post-functionalization. Unconventional fluorescence and low T_g values were observed due to the unique Si–N coordination and good flexibility of the siloxane backbones, respectively. Via dynamic covalent crosslinking, these polymers have been further demonstrated as valuable building blocks for reusable adhesives and reprocessable elastomers with malleability and recyclability. These functional poly(siloxane amine)s promise a new type of silicon-containing polymer and will be potentially applicable in materials and biological fields.

中文翻译：

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用于可重复使用的粘合剂和可重新加工的弹性体的新型可点击和荧光聚（硅氧烷胺）

含硅聚合物是有价值的有机/无机聚合物，具有独特的物理和化学性质。尽管硅元素是地壳中含量第二高的元素，但目前含硅聚合物的种类有限，特别是功能性聚合物。本文介绍了由交替的硅氧烷和胺单元组成的一类新型的有机-无机杂化聚（硅氧烷胺）。1,3-双（3-缩水甘油氧基丙基）四甲基二硅氧烷与多种胺的胺-环氧聚合反应可在温和条件下轻松获得定义明确的聚合物。得益于自然界和工业界中大量可用的功能胺，我们可以通过一锅法获得具有各种侧基的聚（硅氧烷胺），从而可以进一步实现可点击的后功能化。分别由于独特的Si–N配位和硅氧烷骨架的良好柔韧性而观察到了T _g值。通过动态共价交联，这些聚合物被进一步证明是具有可延展性和可循环性的可再用粘合剂和可再加工弹性体的有价值的组成部分。这些功能性聚（硅氧烷胺）有望成为一种新型的含硅聚合物，并将潜在地应用于材料和生物领域。