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Specific recognition of polyphenols by molecularly imprinted polymers based on a ternary deep eutectic solvent
Fu, Najing; Li, Liteng; Liu, Xiao; Fu, Nian; Zhang, Chenchen; Hu, Liandong; Li, Donghao; Tang, Baokun; Zhu, Tao
2017
Source PublicationJOURNAL OF CHROMATOGRAPHY A
ISSN0021-9673
Volume1530Issue:00Pages:23
Abstract

Typically, a target compound is selected as a template for a molecularly imprinted polymer (MIP); however, some target compounds are not suitable as templates because of their poor solubility. Using the tailoring properties of a deep eutectic solvent (DES), the insoluble target compound caffeic acid was transformed into a ternary choline chloride-caffeic acid-ethylene glycol (ChCI-CA-EG) DES, which was then employed as a template to prepare MIPs. The ternary DES-based MIPs were characterized by Fourier transform infrared spectroscopy, elemental analysis, scanning electron microscopy, and atomic force microscopy. The effects of time, temperature, ionic strength, and pH on the recognition processes for four polyphenols (caffeic acid, protocatechuic acid, catechin, and epicatechin) by 13 ChCI-CA-EG ternary DES based MIPs was investigated using high-performance liquid chromatography. The recognition specificity of the MIPs for CA was significantly better than that for the other polyphenols, and the MIPs exhibited obvious characteristics of chromatographic packing materials. In addition, the recognition processes mainly followed a second-order kinetics model and the Freundlich isotherm model, which together indicated that the MIPs mainly recognized the polyphenols by chemical interactions including ion exchange, electron exchange, and new bond formation. Furthermore, the specific recognition ability of the MIPs for polyphenols, which was better than those of C-18, C-8, or non-molecularly imprinted polymer adsorbents, was successfully applied to the recognition of polyphenols in a Radix asteris sample. The transformation of an insoluble target compound in a polymeric DES for MIP preparation and recognition is a novel and feasible strategy suitable for use in further MIP research developments. (C) 2017 Elsevier B.V. All rights reserved.

KeywordDeep Eutectic Solvent Molecularly Imprinted Polymer Specific Recognition Kinetic Isotherm
SubtypeArticle
DOI10.1016/j.chroma.2017.11.011
Language英语
WOS IDWOS:000418986000003
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/23475
Collection研究所(批量导入)
Corresponding AuthorTang, Baokun; Zhu, Tao
Recommended Citation
GB/T 7714
Fu, Najing,Li, Liteng,Liu, Xiao,et al. Specific recognition of polyphenols by molecularly imprinted polymers based on a ternary deep eutectic solvent[J]. JOURNAL OF CHROMATOGRAPHY A,2017,1530(00):23.
APA Fu, Najing.,Li, Liteng.,Liu, Xiao.,Fu, Nian.,Zhang, Chenchen.,...&Zhu, Tao.(2017).Specific recognition of polyphenols by molecularly imprinted polymers based on a ternary deep eutectic solvent.JOURNAL OF CHROMATOGRAPHY A,1530(00),23.
MLA Fu, Najing,et al."Specific recognition of polyphenols by molecularly imprinted polymers based on a ternary deep eutectic solvent".JOURNAL OF CHROMATOGRAPHY A 1530.00(2017):23.
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