Compounded Sequence Control in Polymerization of One-Pot Mixtures of Highly Reactive Acrylates by Differentiating Lewis Pairs
Compounded Sequence Control in Polymerization of One-Pot Mixtures of Highly Reactive Acrylates by Differentiating Lewis Pairs
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DOI：
10.1021/jacs.0c01127
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发表时间：
2020-04-01
影响因子：
15
通讯作者：
Chen, Eugene Y-X
中科院分区：
文献类型：
--
作者：
McGraw, Michael L.;Clarke, Ryan W.;Chen, Eugene Y-X
从一锅法共聚单体混合物合成明确定义的嵌段共聚物（BCP）的能力具有强大的化学和实际意义。然而，在聚合过程中控制高反应性的同源共聚单体如丙烯酸酯之间的序列是具有挑战性的。在这里，我们提出了一种刘易斯对聚合策略，该策略独特地利用优先的刘易斯酸配位来区分共聚单体、独特的动力学以及复合的热力学和动力学差异，以精确控制序列并抑制逐渐变细和错误掺入错误，从而实现丙烯酸酯的明确定义和解析的二或三嵌段共聚物。
The ability to synthesize well-defined block copolymers (BCPs) from one-pot comonomer mixtures has powerful chemical and practical implications. However, controlling sequences between highly reactive, homologous comonomers such as acrylates during polymerization is challenging. Here we present a Lewis pair polymerization strategy that uniquely utilizes preferential Lewis acid coordination to differentiate between comonomers, distinctive kinetics, and compounded thermodynamic and kinetic differentiation to precisely control sequences and suppress tapering and misincorporation errors, thus achieving well-defined and resolved di- or tri-BCPs of acrylates.