Li Hongkun, Chi Weiwen, Liu Yajing, Yuan Wei, Li Yaowen, Li Yongfang, Tang Ben Zhong
State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Laboratory of Advanced Optoelectronic Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China.
Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China.
Macromol Rapid Commun. 2017 Sep;38(17). doi: 10.1002/marc.201700075. Epub 2017 Jul 25.
Ferrocene-based polymers have drawn much attention in the past decades due to their unique properties and promising applications. However, the synthesis of hyperbranched polymers is still a great challenge. Here, two ferrocene-based hyperbranched polytriazoles with high molecular weights are facilely prepared by the click polymerization reactions of ferrocene-containing diazides (1) and tris(4-ethynylphenyl)amine (2) using Cu(PPh ) Br as catalyst in dimethylformamide at 60 °C for 5 and 9 h in satisfactory yields of 54.0% and 52.3%. The resulting polytriazoles are soluble in common organic solvents and thermally stable, with 5% weight loss temperatures up to 307 °C. They can be used as precursors to produce nanostructured ceramics with good magnetizability by pyrolysis at elevated temperature.
在过去几十年中，基于二茂铁的聚合物因其独特的性能和广阔的应用前景而备受关注。然而，超支化聚合物的合成仍然是一个巨大的挑战。在此，以含二茂铁的二叠氮化物（1）和三（4-乙炔基苯基）胺（2）为原料，以Cu(PPh₃)Br为催化剂，在二甲基甲酰胺中于60℃下进行点击聚合反应5小时和9小时，分别以54.0%和52.3%的令人满意的产率轻松制备出两种高分子量的基于二茂铁的超支化聚三唑。所得聚三唑可溶于常见有机溶剂且热稳定，5%失重温度高达307℃。它们可作为前驱体，通过高温热解制备具有良好磁性的纳米结构陶瓷。
