酸性染料分子表面印迹材料的设计与制备及其分子识别特性研究  

Preparation and Molecule Recognition Character of Acidic Dye Molecule Surface-Imprinted Material

作　　者：张婷婷[1] 高保娇[1] 李晓静[1] 余依玲[1] 

机构地区：[1]中北大学化学工程系,太原030051

出　　处：《化学通报》2014年第12期1189-1195,共7页Chemistry

基　　金：山西省青年科学基金项目(2013021009-1)资助

摘　　要：本文使用"接枝交联聚合与印迹过程同步进行"的分子表面印迹方法,以阳离子单体丙烯酰氧乙基三甲基氯化铵(DAC)为功能单体,以活性艳红X-3B(RBR)为模板分子,制备了酸性染料分子表面印迹材料,并考察了印迹材料的分子识别性能。在水溶液中,凭籍强静电相互作用与阳离子-π相互作用,阳离子单体DAC自动地结合在模板RBR分子周围,在氨基/过硫酸盐表面引发体系作用下,DAC及交联剂N,N'-亚甲基双丙烯酰胺(MBA)在硅胶微粒表面发生接枝交联聚合,制得了酸性染料分子表面印迹材料MIP-PDAC/SiO2。该分子表面印迹材料对RBR分子具有高度的识别选择性,相对于结构与RBR相似的活性黄X-RG和活性嫩黄X-6G两种酸性染料,MIP-PDAC/SiO2对RBR的识别选择性系数分别为8.1和8.9。An acidic dye molecule surface-imprinted material（ MIP-PDAC / SiO2） was prepared by the surfaceimprinting technique of ＂synchronously graft-polymerizing and imprinting ＂ and using acryloxyethyltrimethyl ammonium chloride（ DAC） as the functional monomer and reactive brilliant red X-3B（ RBR） as template. In aqueous solution, the cationic monomer DAC is combined around the template molecule RBR through strong electrostatic interaction and cation-π interaction,and then N,N＇-methylene bisacrylamide（ MBA） and DAC were graft / crosslinking-polymerized on silica gel particles under initiation of amino group / peroxysulphate surface-initiating system,obtaining the imprinted Material MIP-PDAC / SiO2. The investigation of its molecule recognition property showed that it has specific recognition selectivity and excellent binding affinity for RBR molecule. Relative to structural analogues of RBR,reactive yellow X-RG and reactive bright yellow X-6G,the selectivity coefficients of MIP-PDAC / SiO2 for RBR are 8. 1 and 8. 9,respectively.

关 键 词：酸性染料 分子表面印迹 静电相互作用 阳离子-Π相互作用 分子识别 

分 类 号：O631.11[理学—高分子化学]