Preparation and characterization of six calixarene bonded stationary phases for high performance liquid chromatography
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- 作者：Chenghua Ding ; Kang Qu ; Yongbo Li ; Kai Hu ; Hongxia Liu ; Baoxian Ye ; Yangjie Wu ; Shusheng Zhang
- 关键词：Calixarene stationary phases ; Chromatographic performance ; Separation mechanism ; Supramolecular chemistry ; Quantum chemistry calculation
- 刊名：Journal of Chromatography A
- 出版年：2007
- 出版时间：2 November 2007
- 年：2007
- 卷：1170
- 期：1-2
- 页码：73-81
- 全文大小：434 K
文摘
Six calixarene bonded silica gel stationary phases were prepared and characterized by elemental analysis, infrared spectroscopy and thermal analysis. Their chromatographic performance was investigated by using PAHs, aromatic positional isomers and E- and Z-ethyl 3-(4-acetylphenyl) acrylate isomers as probes. Separation mechanism based on the different interactions between calixarenes and analytes were discussed. The chromatographic behaviors of those analytes on the calixarene columns were influenced by the supramolecular interaction including π–π interaction, space steric hindrance and hydrogen bonding interaction between calixarenes and analytes. Notably, the presence of polar groups (–OH, –NO2 and –NH2) in the aromatic isomers could improve their separation selectivity on calixarene phase columns. The results from quantum chemistry calculation using DFT-B3LYP/STO-3G* base group were consistent with the retention behaviors of PHAs on calix[4]arene column.