Photoinduced Initiation of Olefin Polymerization: Enabling Spatial Control with Light
Photoinduced Initiation of Olefin Polymerization: Enabling Spatial Control with Light
复制标题
烯烃聚合的光引发引发：利用光实现空间控制
DOI：
10.1021/jacs.2c08548
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发表时间：
2022
影响因子：
15
通讯作者：
Long, Brian K.
中科院分区：
文献类型：
--
作者：
Kaiser, Jordan M.;Burroughs, Justin M.;Long, Brian K.
聚烯烃构成了世界范围内生产的大部分塑料。尽管文献中已知的催化剂前活化机理多种多样，但空间可控烯烃聚合的发展仍然相对未知。如果成功，对烯烃聚合过程的控制可能提供前所未有的合成控制，并有可能扩大工业应用。在这里，我们展示了一种简单的烯烃聚合方法，称为光诱导引发烯烃聚合(PIOP)，其中光酸发生器与受控辐射结合使用来实现催化剂前活化和烯烃聚合。这些结果表明，PIOP可用于乙烯和α-烯烃的溶液聚合，并可推广到气态乙烯和丙烯的非均相聚合，从而实现对烯烃聚合过程的空间控制。
Polyolefins constitute the majority of plastics produced worldwide. Despite the variety of precatalyst activation mechanisms known in the literature, the development of spatially controlled olefin polymerizations remains relatively unknown. If successful, control over the olefin polymerization process could provide unprecedented synthetic control and potentially broaden industrial applications. Herein, we demonstrate a simple olefin polymerization methodology termed photoinduced initiation of olefin polymerization (PIOP), wherein photoacid generators are used in conjunction with controlled irradiation to achieve precatalyst activation and olefin polymerization. These results demonstrate that PIOP can be used for solution-based polymerizations of ethylene and α-olefins and may be extended to heterogeneous polymerizations of gaseous ethylene and propylene, thereby achieving spatial control over the olefin polymerization process.