Vesicles obtained by the self-assembly of asymmetric tetrablock copolymers are a class of materials with fascinating properties. However, simple strategies to synthesize asymmetric tetrablock copolymers are limited. Herein, we have designed and synthesized an initiator which generates radicals by either heating or photoirradiation. Taking the advantages of organocatalyzed reversible complexation mediated radical polymerization which has lower energy requirements, milder reaction conditions, and reduced generation of hazardous byproducts, a three steps synthetic route following "photo-photo-thermal" initiation condition for the preparation of asymmetric CABC tetrablock copolymers with controllable molecular weight, precise block composition and low polydispersity was developed.

通过不对称四嵌段共聚物自组装获得的囊泡是一类具有令人着迷的特性的材料。然而，合成不对称四嵌段共聚物的简单策略是有限的。在这里，我们设计并合成了一种通过加热或光照射产生自由基的引发剂。利用有机催化可逆络合介导的自由基聚合具有较低的能量需求、较温和的反应条件和减少有害副产物的产生的优点，遵循“光-光-热”的三步合成路线被提出。建立了制备分子量可控、嵌段组成精确、多分散性低的不对称CABC四嵌段共聚物的引发条件。