Recent developments in the one-step synthesis of structurally controlled hyperbranched polymers by radical polymerization in terms of molecular weight, dispersity, number of branching points, branching density, and number of chain-end groups are reported. The structural character of HB-polyacrylates and HB-polystyrenes synthesized by organotellurium-mediated radical polymerization (TERP) resembles that of dendrimers and dendrons, which, although enabling complete control over branched structures, requires tedious stepwise synthesis. Successful control is realized by a new molecular design for the monomer inducing the branching structure, in which the reactivity of the dormant group changes from inactive to active upon the reaction and incorporation of the monomer into the polymer backbone. The principle of the monomer design and the scope and limitation of the polymerization method are described here.

据报道，通过自由基聚合一步式合成结构可控的超支化聚合物的最新进展涉及分子量，分散性，支化点数，支化密度和链端基团数。通过有机碲介导的自由基聚合（TERP）合成的HB-聚丙烯酸酯和HB-聚苯乙烯的结构特征类似于树枝状聚合物和树突的结构特征，尽管它们能够完全控制支链结构，但需要繁琐的逐步合成。通过新的引发分支结构的单体分子设计，可以成功地控制单体，其中在单体反应并结合到聚合物主链中后，休眠基团的反应性从无活性变为有活性。