Ethynyl-Capped Hyperbranched Conjugated Polytriazole: Click Polymerization, Clickable Modification, and Aggregation-Enhanced Emission
作者:Jian Wang、Ju Mei、Engui Zhao、Zhegang Song、Anjun Qin、Jing Zhi Sun、Ben Zhong Tang
DOI:10.1021/ma3017037
日期:2012.10.9
Cu(I)-catalyzed azide–alkyne click polymerization, developed based on the click reaction, has become a powerful tool for the construction of functional polytriazoles with linear and hyperbranched structures. This method has, however, rarely been used for the preparation of functional hyperbranched conjugated polytriazoles (hb-CPTA). In this paper, soluble ethynyl-capped hb-CPTA with weight-averaged
基于点击反应开发的Cu(I)催化的叠氮化物-炔点击聚合已成为构建具有线性和超支化结构的功能性聚三唑的有力工具。然而,该方法很少用于制备功能性超支化共轭聚三唑(hb -CPTA)。在本文中,可溶性乙炔基封端的血红蛋白Cu(I)催化的含叠氮化物四苯基乙烯的叠氮化物-炔炔点击聚合反应以高收率(84.4%)合成了重均分子量为39 500的-CPTA ,[2-2-二苯基乙烯]和四炔[1,1,2,2-四(4-乙炔基苯基)乙烷]的浓度相同。通过利用其外围的乙炔基,可以通过叠氮化物-炔烃和硫醇-炔的点击反应有效地对聚合物进行后官能化。聚合物是热稳定的,并且在高于340.0°C的温度下损失了5%的重量。hb -CPTA在800°C下的焦炭收率也很高(74.8%)。聚合物具有聚集增强发射的独特特征。此外,血红蛋白的PL强度-CPTA和硫醇-炔后官能化聚三唑随THF /水混合物中的水分数线性增加。得益于其刚性结