Multicomponent miktoarm stars (MMSs) comprising at least three kinds of chemically different arm segments are extremely important due to their great potential as multiphase materials to elucidate composition/topology‐dependent properties and applications. At present, a “core first” route gives ABC stars, “coupling onto” and combinatorial methods afford ABC and ABCD stars, and modular and iterative approaches enable facile synthesis of MMSs with five or more components. Meanwhile, the introduction of stimuli‐labile linkages and couplable groups into star polymers further enriches the family of smart materials. Upon external stimuli, linking reaction, or postpolymerization modification, miktoarm stars are potentially converted into other architectural polymers such as linear, tadpole‐like, graft, and dendrimer‐like polymers via cleavage and rearrangement in the chain structure. This feature article aims to systematically summarize the synthetic methods and versatile topological transitions of ABC, ABCD, and ABCDE stars. The advantages and limitations of each approach are highlighted, and the future considerations on developments and challenges are discussed.

中文翻译：

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多组分Miktoarm星型共聚物的简便合成和拓扑转化

包含至少三种化学上不同的臂节的多组分miktoarm星（MMS）非常重要，因为它们作为多相材料具有巨大的潜力，可以阐明组成/拓扑相关的特性和应用。目前，“核心优先”路线赋予ABC恒星，“耦合”和组合方法赋予ABC和ABCD恒星，而模块化和迭代方法则使得能够轻松合成具有五个或更多成分的MMS。同时，在星形聚合物中引入不稳定刺激性连接基团和可偶联基团，进一步丰富了智能材料的种类。受到外部刺激，连接反应或聚合后修饰后，miktoarm星可能会转化为其他建筑聚合物，例如线性，t状，接枝，并通过链结构的裂解和重排获得类树状聚合物。这篇专题文章旨在系统地总结ABC，ABCD和ABCDE星的合成方法和多变的拓扑转变。强调了每种方法的优点和局限性，并讨论了对发展和挑战的未来考虑。