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OALib Journal期刊
ISSN: 2333-9721
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以苯甘氨酸基为侧链的光学活性甲基丙烯酰胺聚合物的合成及手性识别能力
DOI: 10.3724/SP.J.1105.2013.12392, PP. 419-425
Keywords: 自由基聚合,手性烯类单体,光学活性聚合物,手性识别能力
Abstract:
合成了N-［(R)-α-叔丁氧基羰基苄基］甲基丙烯酰胺((R)-BCBMAM),通过自由基聚合法获得相应的光学活性聚合物(P(R-BCBMAM)),并以三氟乙酸为水解催化剂除去叔丁基而得到(P(R-CBMAM)).用1H-NMR,IR,CD和GPC对聚合物进行了结构表征,发现聚合溶剂和聚合物分子量对所得聚合物P(R-BCBMAM)的光学活性没有明显影响,P(R-BCBMAM)水解后光学活性有较大的改变.与单体相比,聚合物的比旋光度有较大的区别,且在对应于其侧基的紫外吸收处呈现明显不同于单体的Cotton效应,说明聚合物的主链可能形成了一定的二级结构.以P(R-BCBMAM)和P(R-CBMAM)制备的2种涂敷型高效液相色谱用手性固定相,对部分对映体具有一定的手性拆分能力.利用1H-NMR技术研究了上述2种聚合物与1,1'-联-2-萘酚(BINOL)的相互作用,它们对BINOL都具有良好的手性识别能力.
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