Preparation and recognition property of molecularly imprinted covalent organic framework of chlorogenic acids
In this study,an imine-linked molecularly imprinted covalent organic framework(MCOF)was successfully prepared using chlorogenic acids as the template.Adsorption isotherm,adsorption kinetics,and selective recognition capacity were utilized to assess the performance of the MCOF and its non-imprinted counterpart,the covalent organic framework(NCOF).MCOF exhibited good site accessibility,taking 15 min to attain 97.1%of the maximum adsorbing capacity.Compared with the selective adsorption capacity of the NCOF to the analogs of chlorogenic acids,the MCOF showed higher selectivity to a family of related molecules with a structure similar to that of chlorogenic acids.This study shows that the MCOF provides an innovative opportunity to develop a highly selective material for the extraction and separation of a family of molecules from a high polarity medium.
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