Photochemical isomerization of norbornadiene‐containing polytriazoles obtained by click chemistry polyaddition
作者:Imen Abdelhedi Miladi、Bhanu Prakash Mudraboyina、Ahmed Oueslati、Eric Drockenmuller、Hatem Ben Romdhane
DOI:10.1002/pola.26992
日期:2014.2.15
Polyesters and polyethers containing norbornadiene (NBD) and 1,2,3‐triazole units in the main chain are prepared by step growth polymerization of diester or diether NBD‐based dialkynes with different aromatic diazides using copper‐catalyzed azide–alkyne cycloaddition. The solubility and the physical properties of the resulting polytriazoles are investigated by differential scanning calorimetry, thermogravimetric
主链上含有降冰片二烯(NBD)和1,2,3-三唑单元的聚酯和聚醚是通过使用铜催化的叠氮化物-炔环加成反应,将二酯或二醚NBD基二炔与不同的芳族叠氮化物逐步生长聚合而制备的。通过差示扫描量热法,热重分析,尺寸排阻色谱和1 H NMR光谱研究所得聚三唑的溶解度和物理性质,并在考虑单体化学结构的基础上进行讨论。它们都是无定形的,玻璃化转变温度为51至117°C,数均分子量(M n)值为16至43 kDa,热降解(T d10)值从175到292°C。使用旋涂在石英基板上的聚合物薄膜的紫外可见光谱研究了NBD单元向四环烷烃(QC)的光化学价异构化(PVI)。1 H NMR光谱法首次证明了NBD进入QC的PVI 。©2013 Wiley Periodicals,Inc. J. Polym。科学,A部分:Polym。化学 2014,52,223-231