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智能超分子聚合物水凝的构造通过分离器官交联 (II) 金属循环通过组装后聚合

Wei Zheng¹, Li-Jun Chen¹, Guang Yang²

¹Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University , Shanghai 200062, People's Republic of China.

Journal of the American Chemical Society

|March 25, 2016

概括

这项研究引入了具有金属循环核心的恒星聚合物,结合了自我组装和聚合. 这些材料形成了具有自我愈合特性的刺激反应性水凝,从而提升了功能性有机金属材料.

科学领域:

超分子化学
聚合物科学
材料科学

背景情况:

组装后的修改是金属超分子组件的关键,但受到简单的共价反应的限制.
开发先进的有机金属功能材料需要超越基本结构转换的新策略.

研究的目的:

将协调驱动的自组装与组装后可逆的添加-碎片链转移 (RAFT) 聚合结合起来.
用金属循环核制造星级超分子聚合物并研究它们的特性.
开发一种新型的刺激反应和自我愈合的超分子水凝.

主要方法:

通过协调驱动的自组装形成金属循环核心.
后组装RAFT聚合以创建星聚合物架构.
星聚合物的特征及其水凝形成,包括刺激反应和自我愈合行为.

主要成果:

成功合成了具有明确金属循环核心的星级分子聚合物.
在水中显示较低的临界溶液温度 (LCST) 行为,由于聚烯酸胺 (PNIPAAM) 部分.
由六角金属循环交联形成的超分子水凝,具有温度和离子反应性,以及自我修复性.

结论:

合并协调驱动的自组合和后组合聚合为功能性材料提供了新的途径.
金属循环中的动态 Pt-N 键对于水凝的刺激反应和自我愈合特性至关重要.
这种方法可以制备具有明确的金属有机支架的先进软材料.

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