Magnetic molecularly imprinted polymers doped with graphene oxide for the selective recognition and extraction of four flavonoids from Rhododendron species

Ma, Xingbin; Lin, Hongling; He, Yahui; She, Yongxin; Wang, Miao; El‐Aty, A. M. Abd; Afifi, Nehal A.; Han, Jianchen; Zhou, Xuefei; Wang, Jing; Zhang, Jiyu

doi:10.1016/j.chroma.2019.03.053

Cited by 49 publications

(20 citation statements)

References 42 publications

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“…Acrylic acid was also used for surface modification of chitosan based GO@Fe 3 O 4 composites [152]. Silanization with TEOS to prepare MGO@mSiO 2 (mesoporous silica) has been also reported for direct MIP synthesis [153] and for a further functionalization with vinyltrimethoxysilane (VTTS) [34] and APTES [154] in order to facilitate the subsequent polymerization via vinyl or amino groups, respectively. However, prepared GO@Fe 3 O 4 nanoparticles [155,156], as well as 3D magnetic GO-CNT composites [35], were also directly used for MIP synthesis without functionalization.…”

Section: Magnetite Surface Functionalization For Magnetic Nanotube-supported and Magnetic Nanosheet-supported Mipsmentioning

confidence: 99%

Molecularly Imprinted Polymers for Dispersive (Micro)Solid Phase Extraction: A Review

Jayasinghe

Moreda-Piñeiro

2021

Separations

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The review describes the development of batch solid phase extraction procedures based on dispersive (micro)solid phase extraction with molecularly imprinted polymers (MIPs) and magnetic MIPs (MMIPs). Advantages and disadvantages of the various MIPs for dispersive solid phase extraction and dispersive (micro)solid phase extraction are discussed. In addition, an effort has also been made to condense the information regarding MMIPs since there are a great variety of supports (magnetite and magnetite composites with carbon nanotubes, graphene oxide, or organic metal framework) and magnetite surface functionalization mechanisms for enhancing MIP synthesis, including reversible addition−fragmentation chain-transfer (RAFT) polymerization. Finally, drawbacks and future prospects for improving molecularly imprinted (micro)solid phase extraction (MIMSPE) are also appraised.

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Section: Magnetite Surface Functionalization For Magnetic Nanotube-supported and Magnetic Nanosheet-supported Mipsmentioning

confidence: 99%

Molecularly Imprinted Polymers for Dispersive (Micro)Solid Phase Extraction: A Review

Jayasinghe

Moreda-Piñeiro

2021

Separations

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“…94 In most of the cases, 5-100 mg of particles are dispersed in the samples. The ratio between the amount of MIP particles and the volume of the sample, that has only been optimized in some cases, 68,180 can be lower than 1, 32,33,44,94,143,158,169,179 between 1 and 10, 45,50,58,59,61,64,65,89,98,106,107,111,114,117,147,154,155,[163][164][165]170,177,178,185 or up to 50 34,66,69,144,149,168,174,181,188 and even 250 mg/mL. 43 Environmental waters were filtered 172 or directly put in contact with the MIP particles for the extraction of target analytes.…”

Section: Applications Of Mip In Dspementioning

confidence: 99%

Sample Preparation Using Molecularly Imprinted Polymers

2019

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“…Molecular imprinting technology synthesizes highly crosslinked MIPs through template orientation, generating cavities that mimic binding sites of antibodies, enzymes, and other biological materials, and give priority to bind with template molecules, providing an effective method for molecular recognition (Hrobonova et al, 2018;Liang et al, 2018;Hong et al, 2019;Ma et al, 2019). MIPs have attracted wide attention in the fields of solid phase extraction, sensors, antibodies, enzyme simulation, receptors, and catalysts (Zhang et al, 2013;Ansari and Karimi, 2017;Diltemiz et al, 2017;Xiao et al, 2018;Yu et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Selective Adsorption and Purification of the Acteoside in Cistanche tubulosa by Molecularly Imprinted Polymers

2020

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Acteoside (ACT) is the main component of phenylethanoid glycosides in Cistanche tubulosa, and it is extremely desirable for obtaining high purification of ACT by molecularly imprinted polymers (MIPs) from their extracts. In this study, MIPs were designed and synthetized to adsorb selectively the ACT in C. tubulosa. The effects of different functional monomers, cross-linkers, and solvents of MIPs were investigated. MIPs were studied in terms of static adsorption experiments, dynamic adsorption experiments, and selectivity experiments. The optimal functional monomer, cross-linking agent, and solvent are 4-vinylpyridine, ethylene glycol dimethylacrylate, and the mixed solvent (acetonitrile and N,N-dimethylformamide, 1:1.5, v/v), respectively. Under the optimal conditions, the synthesized MIP1 has a high adsorption performance for ACT. The adsorption capacity of MIP1 to ACT reached 112.60 mg/g, and the separation factor of ACT/echinacoside was 4.68. Because the molecularly imprinted cavities of MIP1 resulted from template molecules of ACT, it enables MIP1 to recognize selectively ACT. Moreover, the N-H groups on MIP1 can form hydrogen bonds with the hydroxyl groups on the ACT; this improves the separation factor of MIP1. The dynamic adsorption of ACT accorded with the quasi-second-order kinetics; it indicated that the adsorption process of MIP1 is the process of chemical adsorption to ACT. MIPs can be applied as a potential adsorption material to purify the active ingredients of herbal medicines.

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Magnetic molecularly imprinted polymers doped with graphene oxide for the selective recognition and extraction of four flavonoids from Rhododendron species

Cited by 49 publications

References 42 publications

Molecularly Imprinted Polymers for Dispersive (Micro)Solid Phase Extraction: A Review

Molecularly Imprinted Polymers for Dispersive (Micro)Solid Phase Extraction: A Review

Sample Preparation Using Molecularly Imprinted Polymers

Selective Adsorption and Purification of the Acteoside in Cistanche tubulosa by Molecularly Imprinted Polymers

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