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为了制备能有效分离富集药草中槲皮素的固相萃取柱,以丙烯酰胺(AM)修饰的碳纳米管为载体,三硫代碳酸酯(DBTTC)为可逆加成-断裂链转移剂(RAFT试剂),槲皮素为模板,甲基丙烯酸(MAA)为功能单体,乙二醇二甲基丙烯酸酯(EGDMA)为交联剂,乙腈为致孔剂,制备了槲皮素分子印迹聚合物,采用红外光谱、扫描电镜和热重分析对印迹材料进行表征,通过高效液相色谱(HPLC)研究聚合物的吸附性能和对底物的特异性识别能力。结果表明,通过活性自由基聚合法合成的多壁碳纳米管表面槲皮素分子印迹聚合具有更好的形态结构和吸附性能,且对槲皮素有很好的特异性识别能力。
In order to prepare the solid phase extraction column which can effectively separate and enrich the quercetin in the herbs, the trithiocarbonate (DBTTC) is a reversible addition-fragmentation chain transfer agent (acrylamide (AM) modified carbon nanotube) RAFT reagent), quercetin as template, methacrylic acid (MAA) as functional monomer, ethylene glycol dimethacrylate (EGDMA) as crosslinking agent and acetonitrile as porogen The imprinted materials were characterized by FTIR, SEM and TGA. The adsorption properties of the polymers and the specific recognition of the substrates were studied by high performance liquid chromatography (HPLC). The results showed that quercetin molecularly imprinted polymer (MWCNT) on MWCNTs synthesized by living radical polymerization had better morphological structure and adsorption properties, and had good specific recognition ability to quercetin.