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Functional Hyperbranched polythioamides Synthesized from Catalyst-free Multicomponent Polymerization of Elemental Sulfur

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Chinese Journal of Chemistry 2022年第6期40卷 725-733页

作者： Shangrun Liu Fengting Li Wenxia Cao Rongrong Hu Ben Zhong Tang State Key Laboratory of Luminescent Materials and Devices Guangdong Provincial Key Laboratory of Luminescence from Molecular AggregatesSouth China University of TechnologyGuangzhouGuangdong 510640China Shenzhen Institute of Molecular Aggregate Science and Engineering School of Science and EngineeringThe Chinese University of Hong KongShenzhen CityGuangdong 518172China AIE Institute GuangzhouGuangdong 510530China Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction The Hong Kong University of Science&TechnologyClear Water BayKowloonHong KongChina

Hyperbranched polymers with unique topological structures,large number of branching sites and terminal groups have attracted much attention,and are expected to possess advanced functionalities compared with their linear polymer counterparts.The devel-opment of hyperbranched polymers is hence highly desired but challenging,especially for sulfur-containing polymers which are at-tractive metal absorbents,optical materials,dielectric materials,and self-healing materials.In this work,six hyperbranched polythi-oamides with various topological structures,well-defined repeating units,satisfying yields(up to 99%),and high molecular weights(up to 101400 g/mol)were successfully designed and synthesized from the catalyst-free multicomponent polymerization of ele-mental sulfur,aromatic alkynes and aliphatic amines,through different monomer combination strategies based on the designed three-or four-functional alkyne and amine monomers.The hyperbranched polythioamides possess unique luminescence property,and strong affinity toward Hg^(2+),which can be utilized in the fluorescence detection of Hg^(2+),as well as mercury removal from aque-ous solutions with high efficiency of 99.99%and low mercury residue of 0.1 ppb.Hyperbranched polythioamides with unique struc-tures may be developed to a group of fascinating materials and find their potential applications as metal absorbents and optoelec-tronic materials.

关键词： Hyperbranched polymer polythioamide Polymerization Sulfur Mercury

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