α-环糊精与二甲氨基查尔酮之间分子识别作用的紫外可见吸收光谱研究  

Study on molecular recognition between α-cyclodextrin and dimethylaminochalcone via UV-Vis spectroscopy

作　　者：罗春华[1,2] 董秋静[1,2] 张晴晴 胡宏来 LUO Chun-hua;DONG Qiu-jing;ZHANG Qing-qing;HU Hong-lai(School of Chemistry and Materials Engineering,Fuyang Normal University,Fuyang Anhui 236037,China;Anhui Provincial Key Laboratory for Degradation and Monitoring of the Pollution of the Environment,Fuyang Normal University,Fuyang Anhui 236037,China)

机构地区：[1]阜阳师范学院化学与材料工程学院,安徽阜阳236037 [2]阜阳师范学院环境污染物降解与监测安徽省重点实验室,安徽阜阳236037

出　　处：《阜阳师范学院学报（自然科学版）》2018年第1期12-16,共5页Journal of Fuyang Normal University(Natural Science)

基　　金：安徽建筑大学先进建筑材料安徽省重点实验室开放课题(JZCL201605KF);安徽高校优秀青年人才支持计划重点项目(gxyq ZD2016191);阜阳师范学院横向合作科研项目(XDHX2016028)资助

摘　　要：采用紫外可见吸收光谱对α-环糊精(α-CD)与二甲氨基查尔酮之间的分子识别作用进行了研究。结果表明,α-CD与二甲氨基查尔酮基团之间通过分子识别作用形成1∶1的包结物,分别以吸光度和特征波长的变化确定α-CD与4-羟基-4’-二甲氨基查尔酮包结物的结合常数Ka分别为1.1×105M-1和8.5×103M-1,通过特征波长获得α-CD和端基含二甲氨基查尔酮的聚N-异丙基丙烯酰胺聚合物的结合常数Ka为4.2×103M-1。Molecular recognition betweenα-cyclodextrin(α-CD)and dimethylaminochalcone was investigated by UV-Vis spectroscopy.The results show that 1∶1 inclusion complexes betweenα-CD and dimethylaminochalcone moiety are formed by molecular recognition.The association constant Ka for the complex formation ofα-CD with 4-hydroxyl-4’-(dimethylamino)chalcone is 1.1×105 M-1 and 8.5×103 M-1 respectively determined by absorbance and characteristic wave length.The Ka value forα-CD with dimethylaminochalcone-terminated poly(N-isopropylacrylamide)is 4.2×103 M-1.

关 键 词：Α-环糊精 二甲氨基查尔酮 分子识别 紫外可见吸收光谱 聚合物 

分 类 号：O625[理学—有机化学]