ne. Radical homopolymerizations of NEMOU were performed in several solvents to obtain the corresponding chiral polymers that have hydrogen bonds based on urea moieties. Specific optical rotations of poly(NEMOU) changed by the measurement temperature, which may be attributed in part to change of conformation. From the results of radical copolymerizations of NEMOU with styrene (ST, M2) or methyl methacrylate
(R)-(-)-1-(1-
萘基)乙基(
2-甲基丙烯酰氧基乙基)
脲(NEMOU)是由异
氰酸2-甲基丙烯酰氧基乙基酯(
MOI)和(R)-(+)-1-(1-
萘基)合成的
乙胺。NEMOU的自由基均聚反应是在几种溶剂中进行的,以获得具有基于
尿素部分的氢键的相应手性聚合物。聚(NEMOU)的比旋光度随测量温度而变化,这可能部分归因于构象变化。从NEMOU的自由基共聚的结果与
苯乙烯(ST中,M 2)或
甲基丙烯酸甲酯(
MMA,男2),单体反应性比([R 1,- [R 2)和Alfrey-价格Q -确定e: 对于NEMOU-ST系统,r 1 = 0.48,r 2 = 0.20,Q 1 = 1.41,e 1 = 0.74;对于NEMOU-
MMA系统,r 1= 0.55,r 2= 0.16,Q 1= 9.02,e 1= 1.96。共聚物的手性受共聚单体单元的强烈影响。为了检查聚(NEMOU)的手性识别能力,由