3- and 4-Arm Star Polymers (PEG3 and PEG4) via Metal-Free Azide-Alkyne Click Reaction

U. Günay
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Abstract

Star polymers are known for their different structural and functional properties. Depending on their structure, they may display a wide range of characteristics. Star polymers can be synthesized using either a core-first or arm-first strategy. Numerous synthetic approaches can be used in both cases. In this work, 3- and 4-arm star polymers were prepared via the metal-free azide-alkyne click reaction. Trifunctional and tetrafunctional propiolate (acetylenecarboxylate) ester-containing cores were prepared and then subjected to a metal-free azide-alkyne reaction with azide end-functionalized PEG (PEG-N3) to yield A3 and A4-type star polymers, respectively. All the structures were characterized using 1H and 13C NMR spectroscopy and GPC.
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3臂和4臂星形聚合物(pegg3和PEG4)的无金属叠氮-炔点击反应
星形聚合物以其不同的结构和功能特性而闻名。根据它们的结构不同,它们可能表现出各种各样的特征。星形聚合物的合成可以采用核优先或臂优先的策略。在这两种情况下都可以使用许多综合方法。本文通过无金属叠氮-炔咔嗒反应制备了3臂和4臂星形聚合物。制备了含三官能团和四官能团的丙酸(乙乙甲酸酯)酯核,并与叠氮化物端功能化的聚乙二醇(PEG- n3)进行无金属叠氮化物-炔反应,分别得到A3型和a4型星型聚合物。所有结构均通过1H、13C NMR和GPC进行了表征。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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