Design and Synthesis of a Cyclic Double-Grafted Polymer Using Active Ester Chemistry and Click Chemistry via A “Grafting onto” Method
Design and Synthesis of a Cyclic Double-Grafted Polymer Using Active Ester Chemistry and Click Chemistry via A “Grafting onto” Method
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DOI：
10.3390/polym11020240
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发表时间：
2019-02
期刊：
影响因子：
5
通讯作者：
Mengchun Liu;Lu Yin;Shuangshuang Zhang;Zhengbiao Zhang;Wei Zhang;Xiu-lin Zhu
中科院分区：
文献类型：
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作者：
Mengchun Liu;Lu Yin;Shuangshuang Zhang;Zhengbiao Zhang;Wei Zhang;Xiu-lin Zhu
结合活性酯化学和点击化学，通过“接枝”方法成功地制备了一种环状双接枝聚合物。采用活性酯化学作为后功能化改性方法，丙炔胺与环前体聚五氟苯甲酸乙烯酯c-PPF4VB6.5k反应合成了环骨架c-P2。以叠氮化物功能化聚苯乙烯（l-PSN3）与3,5-双（丙基氧基）苯基甲醇反应制备了含羟基聚合物双链（l-PS-PhOH），再经叠氮化物基团修饰得到含叠氮化物聚合物双链（l-PS-PhN3）。然后通过CuAAC反应将环骨架（c-P2）与含叠氮化物的聚合物双链（l-PS-PhN3）偶联，构建新型环双接枝聚合物（c-P2-g- ph - ps）。本研究实现了环接枝聚合物侧链的多样性和复杂性，该环双接枝聚合物（c-P2-g-Ph-PS）的分子量分布仍然很窄（Mw/Mn < 1.10）。
Combing active ester chemistry and click chemistry, a cyclic double-grafted polymer was successfully demonstrated via a “grafting onto” method. Using active ester chemistry as post-functionalized modification approach, cyclic backbone (c-P2) was synthesized by reacting propargyl amine with cyclic precursor (poly(pentafluorophenyl 4-vinylbenzoate), c-PPF4VB6.5k). Hydroxyl-containing polymer double-chain (l-PS-PhOH) was prepared by reacting azide-functionalized polystyrene (l-PSN3) with 3,5-bis(propynyloxy)phenyl methanol, and further modified by azide group to generate azide-containing polymer double-chain (l-PS-PhN3). The cyclic backbone (c-P2) was then coupled with azide-containing polymer double-chain (l-PS-PhN3) via CuAAC reaction to construct a novel cyclic double-grafted polymer (c-P2-g-Ph-PS). This research realized diversity and complexity of side chains on cyclic-grafted polymers, and this cyclic double-grafted polymer (c-P2-g-Ph-PS) still exhibited narrow molecular weight distribution (Mw/Mn < 1.10).