Postpolymerization modification of polynorbornene side chains via tetramethyl guanidine promoted esterification
作者:Jing Xu、Hongwei Zhang、Luoxin Wang、Meng Chen、Dan Luo
DOI:10.1002/pola.28269
日期:2016.12.1
We demonstrate that polynorbornene containing primary activated bromide moieties is a novel chemically modifiable platform for postpolymerization modification. Polymer P0 was synthesized via ring‐opening metathesis polymerization of monomer 1 with the assistance of Grubbs third generation (G‐III) catalyst. Subsequently, nucleophilic substitution was conducted by mixing P0 with n‐caproic acid, sorbic
我们证明,含聚降冰片烯的伯活化溴化物部分是用于后聚合修饰的新型化学修饰平台。聚合物P0是在第三代Grubbs催化剂的帮助下,通过单体1的开环复分解聚合反应合成的。随后,亲核取代是通过混合进行P0与Ñ -caproic酸,山梨酸,米温和和化学计量的条件下在1,1,3,3-四甲基胍(TMG)的存在下-toluic酸或4-硝基苯甲酸,以产生功能化聚合物P1-P4。NMR结果证实了反应性位点的完全转化,并举例说明了TMG促进酯化的“点击”性质。通过热重分析和差示扫描量热法研究了所有聚合物样品的热稳定性和玻璃化转变行为。©2016 Wiley Periodicals,Inc. J. Polym。科学,A部分:Polym。化学 2016,54,3733-3740