刷形高分子的合成新方法

刷形高分子（包括聚合物分子刷和树枝化聚合物）的是一类重要的一维单分子纳米材料。本项目拟将ABm (m≥2)单体的CuAAC活性链增长点击聚合和三叠氮化合物的CuAAC自加速点击反应引入到刷形高分子合成领域，开展刷形高分子的合成新方法及应用研究。首先，拟设计合成侧基含有高活性叠氮基团的线形高分子并以其为主链引发剂，通过引发ABm (m≥2)单体的CuAAC活性链增长点击聚合，建立一锅法合成侧链为支化高分子的刷形高分子的合成新方法。其次，拟将具有CuAAC自加速特性的三叠氮化合物引入线形和支化高分子主链，克服位阻效应引起的空间堵塞，实现具有超高接枝密度且可调控（每个重复单元含1-3个侧链）的刷形高分子的快速、高效、精确控制合成。

Brush polymers, including molecular brushes and dendronized polymers, represent an important type of one-dimensional nanomaterials. In this propose, the living chain-growth CuAAC click polymerization of ABm (m ≥ 2) monomer and the self-accelerating CuAAC click reaction of triazide compound will be introduced into the synthesis of brush polymers. First, the chain-growth CuAAC click polymerization of functional ABm (m ≥ 2) monomers using a linear polymer with danglinged highly reactive azido groups as backbone initiator will be developed for one-pot synthesis of brush polymer with hyperbranched polymer as side chain. Second, the triazide compound that has CuAAC self-accelerating effect will be introduced into linear or branched backbone to overcome the limition of low grafting density due to the steric congestion for efficient and rapid synthesis of brush polymer with ultrahigh and tunable grafting density (1-3 side chian per repeat unit).