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首页> 外文期刊>Journal of Polymer Science, Part A. Polymer Chemistry >Well-defined poly(oxazoline)-b-poly(acrylate) amphiphilic copolymers: From synthesis by polymer-polymer coupling to self-organization in water
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Well-defined poly(oxazoline)-b-poly(acrylate) amphiphilic copolymers: From synthesis by polymer-polymer coupling to self-organization in water

机译：定义明确的聚（恶唑啉）-b-聚（丙烯酸酯）两亲共聚物：从聚合物-聚合物偶联的合成到水中的自组织

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摘要

In this contribution, we report on the self-assembly in water of original amphiphilic poly(2-methyl-2-oxazoline)-b-poly(tert-butyl acrylate) copolymers, synthesized by copper-catalyzed azide-alkyne cycloaddition (CuAAC) reaction. For such purpose, (poly(2-methyl-2-oxazoline)) and (poly(tert-butyl acrylate)) are first prepared by cationic ring-opening polymerization and atom transfer radical polymerization, respectively. Well-defined polymeric building blocks, ω-N_3-P(t-BA) and α-alkyne-P(MOx), bearing reactive chain end groups, are accurately characterized by matrix-assisted laser desorption ionization time-of-flight spectroscopy. Then, P(MOx)_n-b-P(t-BA) _m are achieved by polymer-polymer coupling and are fully characterized by diffusion-ordered NMR spectroscopy and size exclusion chromatography, demonstrating the obtaining of pure amphiphilic copolymers. Consequently, the latter lead to the formation in water of well-defined monodisperse spherical micelles (R_H = 40-60 nm), which are studied by fluorescence spectroscopy, static light scattering, atomic force microscope, and transmission electronic microscopy.
机译：在这项贡献中，我们报告了由铜催化的叠氮化物-炔烃环加成反应（CuAAC）合成的两亲聚（2-甲基-2-恶唑啉）-b-聚丙烯酸叔丁酯的原始两性共聚物的自组装反应。为此，首先分别通过阳离子开环聚合和原子转移自由基聚合制备（聚（2-甲基-2-恶唑啉））和（聚丙烯酸叔丁酯）。定义明确的聚合物结构单元ω-N_3-P（t-BA）和α-炔烃-P（MOx）带有反应性链端基，可通过基质辅助激光解吸电离飞行时间光谱进行精确表征。然后，P（MOx）_n-b-P（t-BA）_m通过聚合物-聚合物偶联获得，并通过扩散有序NMR光谱和尺寸排阻色谱法进行了全面表征，证明获得了纯两亲共聚物。因此，后者导致在水中形成定义明确的单分散球形胶束（R_H = 40-60 nm），并通过荧光光谱，静态光散射，原子力显微镜和透射电子显微镜进行了研究。

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