作者：?Xiaofei Shen, Hailong Huang, Hao Qian, Longxiang Tang, Yan Zhang, Min Xu,Huiqing Wang,* and Zhongka
关键字：chiral recognition, click chemistry, ethyl cellulose, poly(phenyl isocyanide)
论文来源：期刊
具体来源：Macromolecular Chemistry and Physics
发表时间：2021年
Chiral property of cellulose can be transferred to fifinal materials, here artifificial helical polymer, right-handed helical poly(phenyl isocyanide) (PPI) is grafted onto ethyl cellulose (EC) with expecting to enhance the chiral effffect of PPI. EC-2,3-g-PPIn copolymers are prepared via “click” chemistry of copper-catalyzed alkyne-azide cycloaddition, and confifirmed by high-resolution 1H and 13C NMR, Fourier transform infrared spectroscopy (FTIR), and gel permeation chromatography (GPC). The resulting EC-2,3-g-PPIn copolymer takes a right-handed helical structure with super circular dichroism intensity which is 302% higher than that of PPI, which indicates that EC backbone promotes the right-handed chirality of PPIn. Furthermore, EC-2, 3-g-PPIn exhibits good chiral recognition ability of the D/L-Ala-DNSP flfluorescent probe, and induces a uniquely visible blue shift for L-Ala-DNSP. Therefore, a novel facile strategy is provided to highly improve chiral property and chiral recognition ability of artifificial helical polymers by grafting onto EC.