化学
整体
亲水作用色谱法
色谱法
甲基丙烯酸酯
乙二醇二甲基丙烯酸酯
选择性
毛细管电色谱
共聚物
溶剂
毛细管作用
甜菜碱
毛细管电泳
聚合物
高效液相色谱法
有机化学
甲基丙烯酸
材料科学
复合材料
催化作用
作者
Zhengjin Jiang,Norman W. Smith,Paul Ferguson,M.R.S. Taylor
摘要
A porous zwitterionic monolith was prepared by thermal copolymerization of N,N-dimethyl-N-methacryloxyethyl-N-(3-sulfopropyl)ammonium betaine and ethylene dimethacrylate inside a 100-μm-i.d. capillary. The resulting monolith was evaluated as a hydrophilic liquid chromatography (HILIC) stationary phase. No evidence of swelling or shrinking of the monolith in different polarity solvents was observed. A typical HILIC mechanism was observed at higher organic solvent content (ACN% > 60%). The poly(SPE-co-EDMA) monolith showed very good selectivity for neutral, basic, and acidic polar analytes. For charged analytes, both hydrophilic interactions and electrostatic interactions contributed to their retention, which provide chromatographers more choice to optimize the separations.
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