Controlled synthesis of azobenzene functionalized homo and copolymers via direct acyclic diene metathesis polymerization
作者:Liang Ding、Mengyu Xu、Jingjing Wang、Yang Liao、Jun Qiu
DOI:10.1016/j.polymer.2014.02.021
日期:2014.4
ruthenium based metathesis catalysts and conditions were tested to optimize the ADMET polymerization of these monomers. Besides, this polycondensation method is also reported allowing for the synthesis of alternating and diblock azobenzene-containing copolymers with molecular weight control by using the selectivity of olefin cross-metathesis between acrylates and terminal olefins. The resulting polymers showed
描述了一种获得一系列偶氮苯官能化的线性不饱和聚烯烃的有力而有效的策略,该策略涉及三种不同α,ω的首次设计和合成轻度反应条件下,具有不同反应性的丙烯酸酯和末端双键的α-二烯单体及其随后的无环二烯复分解(ADMET)聚合。测试了不同的钌基复分解催化剂和条件,以优化这些单体的ADMET聚合。此外,还报道了这种缩聚方法,其通过利用丙烯酸酯与末端烯烃之间的烯烃交叉复分解反应的选择性来合成具有分子量控制的交替的和二嵌段的含偶氮苯的共聚物。所得聚合物显示出明确定义的分子量,合理的多分散指数和可逆的光响应行为。