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以电子束为辐照射线源,采用辐射聚合法成功制备了槲皮素-Ni(Ⅱ)金属配位分子印迹聚合物.通过紫外光谱研究了槲皮素与Ni(Ⅱ)之间的配位结构、配位作用方式及配位比,并按照1∶2的比例形成稳定配合物,同时也验证了槲皮素、Ni(Ⅱ)及功能单体甲基丙烯酸三者发生了金属配位印迹作用.利用红外光谱对产物的结构进行了表征.透射电镜、扫描电镜、吸附动力学实验分别考察辐射剂量对聚合物的微观形貌、吸附动力学性能的影响,结果表明辐射剂量对印迹聚合物的吸附性能有显著影响.同时选择性吸附实验结果显示该印迹聚合物对槲皮素-Ni(Ⅱ)配合物表现出明显的吸附选择性和特异性,最大结合量可达82.22μmol/g.对黄芩素和柚皮素的吸附选择性较差,分离因子分别为3.915和5.443.
The quercetin-Ni (Ⅱ) metal coordination polymer was successfully prepared by radiation polymerization using electron beam as irradiation source. The coordination between quercetin and Ni (Ⅱ) was studied by ultraviolet spectroscopy Structure, coordination mode and coordination ratio, and the formation of a stable complex in the ratio of 1: 2, also confirmed that quercetin, Ni (Ⅱ) and the functional monomer Methacrylate three metal coordination imprinted The structure of the product was characterized by infrared spectroscopy.The effects of radiation dose on the morphology and adsorption kinetics of the polymer were investigated by transmission electron microscopy, scanning electron microscopy and adsorption kinetics, respectively. The results show that the radiation dose affects the structure of the imprinted polymer The results of selective adsorption experiments showed that the imprinted polymer showed obvious adsorption selectivity and specificity for quercetin-Ni (Ⅱ) complex with the maximum binding capacity of 82.22μmol / g. The adsorption selectivity to baicalein and naringenin was poor, with separation factors of 3.915 and 5.443, respectively.