A stable core-shell metal-organic framework@covalent organic framework composite as solid-phase extraction adsorbent for selective enrichment and determination of flavonoids

Mingcai Ma,Xiaofeng Lu,Licheng Wang,Yong Guo, Hui Ding,Shuai Wang,Xiaojing Liang

Journal of chromatography. A（2023）

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摘要

•A stable core-shell MOF@COF composite was synthesized and utilized as SPE adsorbent.•The covalent integration of hydrophobic COF shell successfully enhanced the hydrophobicity of MOF core.•The excellent extraction efficiency was attributed to the presence of multiple interactions.•A sensitive method for the quantification of flavonoids in grape juice and honey samples was developed.

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关键词

Flavonoids,Core-shell structure,MOF@COF composite,High performance liquid chromatography,Solid-phase extraction

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