| Dynamic Ring-chain Equilibrium of Nucleophilic Thiol-yne “Click” Polyaddition for Recyclable Poly(dithioacetal)s |
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| 作者姓名： | Jin-Xia Lei Qi-Yuan Wang Fu-Sheng Du Zi-Chen Li |
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| 作者单位： | Beijing National Laboratory for Molecular Sciences(BNLMS),Key Laboratory of Polym.Chem.&Physics of Ministry of Education,Department of Polymer Science&Engineering,College of Chemistry and Molecular Engineering,Center for Soft Matter Science and Engineering,Peking University,Beijing 100871,China |
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| 基金项目： | financially supported by the National Key Research and Development Program of China (No.2016YFA0201400)；;the National Natural Science Foundation of China (Nos. 21971005 and 21534001)； |
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| 摘 要： | We report a dynamic polymerization system based on the reversible nucleophilic Michael polyaddition of activated alkynes and dithiols. Four poly(dithioacetal)s(P1-P4) were prepared via the base-catalyzed thiol-yne "click" polyaddition of two dithiols(1,4-butanedithiol(4 S) and 1,5-pentanedithiol(5 S)) and two alkynones(3-butyn-2-one(Y1) and 1-phenyl-2-propyn-1-one(Y2)) at high concentrations. We systematically investigated the base-catalyzed polymerization of 4 S and Y1(for polymer P1) under dif...
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