The synthesis of multiblock copolymer brush based on DSPAAC and CuAAC click reaction,Journal of Polymer Science

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The synthesis of multiblock copolymer brush based on DSPAAC and CuAAC click reaction
Journal of Polymer Science ( IF 3.9 ) Pub Date : 2020-12-01 , DOI: 10.1002/pol.20200697
Lifen Xiao ₁ , Jie Li ₁ , Wenyi Li ₁ , Wei Li ₁ , Geng Huang ₁

Affiliation

Multiblock copolymer brushes have broad application in thermoplastic elastomers, drug delivery, porous materials, and nanolithography due to their unique structure and properties. In this research, a novel multiblock copolymer brush (PHEA‐g‐PEG)_x‐co‐ (PEG₂₃)_y was synthesized by combining the efficient double strain‐promoted azide‐alkyne cycloaddition (DSPAAC) and copper‐catalyzed azide‐alkyne cycloaddition (CuAAC) click reactions. The gel permeation chromatography (GPC), proton nuclear magnetic resonance spectrometer (¹H NMR), Fourier transform infrared spectroscopy (FT‐IR), and atomic force microscopy (AFM) were used to characterize the prepared polymers. The results demonstrated that the novel multiblock copolymer brush was successfully prepared. The mole ratio was 1/0.84 between block PHEA‐g‐PEG and block PEG₂₃, and the grafting density was 100%. The AFM image showed the morphologies of cylinder, sphere, and beads on a string owning to the random distribution of PHEA‐g‐PEG and PEG.

中文翻译：

基于DSPAAC和CuAAC点击反应的多嵌段共聚物刷的合成

由于其独特的结构和性能，多嵌段共聚物刷在热塑性弹性体，药物输送，多孔材料和纳米光刻方面具有广泛的应用。在这项研究中，一种新颖的多嵌段共聚物刷（PHEA-克-PEG）_X -共- （PEG ₂₃）_ÿ通过组合高效率的双张力促进叠氮化物-炔环加成（DSPAAC）和铜-催化的叠氮化物-炔烃环加成合成（CuAAC）点击反应。凝胶渗透色谱（GPC），质子核磁共振波谱仪（¹H NMR），傅立叶变换红外光谱（FT-IR）和原子力显微镜（AFM）表征了制备的聚合物。结果表明，成功制备了新型的多嵌段共聚物刷。嵌段PHEA- g -PEG与嵌段PEG ₂₃之间的摩尔比为1 / 0.84 ，接枝密度为100％。AFM图像显示了由于PHEA- g -PEG和PEG的随机分布而产生的圆柱体，球体和珠子的形态。

更新日期：2021-01-02

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