One‐pot synthesis of pillar[5]quinone‐amine polymer coated silica as stationary phase for high‐performance liquid chromatography

化学 亲水作用色谱法 胺气处理 芳香胺 聚合物 结构异构体 高效液相色谱法 重复性 相(物质) 色谱法 反相色谱法 共价键 疏水效应 有机化学
作者
Zicheng Lu,Yuling Hu,Zenghui Xie,Gongke Li
出处
期刊:Journal of Separation Science [Wiley]
卷期号:46 (18)
标识
DOI:10.1002/jssc.202300269
摘要

To expand the application of pillararene in chromatographic separation, we designed and fabricated a pillar[5]quinone‐amine polymer coated silica through quinone‐amine reaction by facile one‐pot synthesis method, which was applied as a stationary phase for high‐performance liquid chromatography. Separation of hydrophobic compounds, hydrophilic compounds, halogenated aromatic compounds, and 11 aromatic positional isomers was achieved successfully in this stationary phase. Reverse‐phase separation mode and hydrophilic‐interaction separation mode were proved to exist, indicating the potential application of the mix‐mode stationary phase. Studies of chromatographic retention behavior and molecular simulation showed that multiple interactions might play an important role in the separation process, including hydrophobic interaction, hydrogen‐bonding interaction, aromatic π‐π interaction, electron donor‐acceptor interaction, and host‐guest interaction. Column repeatability and stability were tested, which showed relative standard deviations of retention time less than 0.2% for continuous 11 injections, and the durability relative standard deviations of retention time were less than 0.91% after 90 days. This novel design strategy would broaden the application of pillararene‐based covalent organic polymer in chromatography and separation science.
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