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Updated: Sep 21, 2025

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Published on: December 16, 2022
Facile Synthesis of Hyperbranched Polymers by Sequential Polycondensation
Xiaojie Li1, Xingliang Liu1, Dongjian Shi1
1Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, No. 1800 Lihu Avenue, Wuxi, Jiangsu 214122, People's Republic of China.
Abstract:
Hyperbranched polymers are an important class of soft nanomaterial, but the synthesis of hyperbranched polymers with well-defined dendritic structure from readily available monomers remains a challenge in polymer chemistry. We herein report a sequential polycondensation method for the one-pot synthesis of hyperbranched polymers with tunable structure and high degree of branching from commercial available monomers. Specifically, in the polycondensation process of equimolar difunctional haloalkane (A2-type monomers) and trifunctional dihydroxybenzoic acid (CB2-type monomers) using K2CO3 as the base, the aliphatic nucleophilic substitution reactivity sequence of the functional groups derived from CB2 monomers is C > second B > first B ≫ original B, thereby producing hyperbranched poly(ester ether)s with high degree of branching (DB > 0.6). Moreover, the surface functionality of the hyperbranched poly(ester ether)s could be facilely tailored by just introducing A-type monofunctional reagents into the one-pot A2 + CB2 polymerization system.
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