文献类型：期刊文献

英文题名：Photocatalytic unactivated aliphatic C-H bonds azidation: A versatile platform for functionalization of commodity polymers

作者：Huang, Guanwen[1];Wang, Zhongming[1];Xu, Binbin[1];Du, Xinghao[1];Tan, Jianbo[2,3];Feng, Chun[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Guangdong Univ Technol, Sch Mat & Energy, Dept Polymer Mat & Engn, Guangzhou 510006, Peoples R China;[3]Guangdong Univ Technol, Guangdong Prov Key Lab Funct Soft Condensed Matter, Guangzhou 510006, Peoples R China

年份：2025

卷号：228

外文期刊名：EUROPEAN POLYMER JOURNAL

收录：;EI(收录号：20250717889185);WOS:【SCI-EXPANDED(收录号:WOS:001444176700001)】；

基金：The authors are thankful for financial support from National Natural Science Foundation of China (52122314, U22A20131 and 52361165657) .

语种：英文

外文关键词：C-H azidation; C-H activation; Postfunctionalization; Commodity polymer; Photocatalysis

摘要：Development of efficient and robust approaches for functionalization of commodity polymers is of significant importance for endowing high-volume and low-cost commodity polymers with new functionalities and application fields. Herein, we report a general strategy to introduce azide units into commodity polymers, such as poly (ethylene glycol), polystyrene, polypropylene and polybutylene, via photocatalytic azidation of unactivated aliphatic C-H bonds using aridinium photoredox catalyst under blue LED irradiation (455 nm, 4 W). The contents of introduced azide units into commodity polymers can be regulated by reaction time. By copper-catalyzed azidealkyne cycloaddition reaction, the obtained azide-containing commodity polymers can be efficiently modified with desired functional moieties. The azide-containing commodity polymers also can be used to covalently modify carbon-materials (e.g. fullerene) to prepare polymer/carbon-materials composites via azide-ene reaction. Additionally, the introduced azide units can be transformed into amino groups for further functionalization. Given the versatility and robustness of C-H azidation strategy, this work opens a new avenue to generate various functional materials from commodity polymers.