Molecularly imprinted polymers by the surface imprinting technique

Dong, Chengya; Shi, Hao; Han, Yuanrui; Yang, Yuanyuan; Wang, Ruixin; Men, Jiying

doi:10.1016/j.eurpolymj.2020.110231

Cited by 158 publications

(58 citation statements)

References 235 publications

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“…For this reason, the technique has also been referred to as "hostguest" polymerization or "template" polymerization. Meanwhile, the types of monomer, crosslinker, solvent, and other polymerization elements are fundamental, since can affect the mass transfer rate, the number of effective imprinting cavities, and their matching degree with the targets [8,17].…”

Section: General Conceptsmentioning

confidence: 99%

“…A GCE which was doubly modified with MWCNT/Pd-Ir and the methylene blue doped MIP was used to prepare a sensor for carbofuran detection. First, 4-tert-butylcalix [8]…”

Section: Pesticidesmentioning

confidence: 99%

“…or artificial one (e.g., MIPs). MIPs have gained attention as recognition elements for sensor development due to their high selectivity towards the target analyte and their advantages compared to biological receptors: (i) easy and low-cost preparation, (ii) physical and chemical robustness when unfavorable conditions are used, such as organic solvents, extreme pH values, high temperatures and/or high pressures, (iii) reusability, (iv) stability and (v) possibility of large scale production [ 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

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Molecularly Imprinted Polymers Combined with Electrochemical Sensors for Food Contaminants Analysis

et al. 2021

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Detection of relevant contaminants using screening approaches is a key issue to ensure food safety and respect for the regulatory limits established. Electrochemical sensors present several advantages such as rapidity; ease of use; possibility of on-site analysis and low cost. The lack of selectivity for electrochemical sensors working in complex samples as food may be overcome by coupling them with molecularly imprinted polymers (MIPs). MIPs are synthetic materials that mimic biological receptors and are produced by the polymerization of functional monomers in presence of a target analyte. This paper critically reviews and discusses the recent progress in MIP-based electrochemical sensors for food safety. A brief introduction on MIPs and electrochemical sensors is given; followed by a discussion of the recent achievements for various MIPs-based electrochemical sensors for food contaminants analysis. Both electropolymerization and chemical synthesis of MIP-based electrochemical sensing are discussed as well as the relevant applications of MIPs used in sample preparation and then coupled to electrochemical analysis. Future perspectives and challenges have been eventually given.

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Section: General Conceptsmentioning

confidence: 99%

“…A GCE which was doubly modified with MWCNT/Pd-Ir and the methylene blue doped MIP was used to prepare a sensor for carbofuran detection. First, 4-tert-butylcalix [8]…”

Section: Pesticidesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Molecularly Imprinted Polymers Combined with Electrochemical Sensors for Food Contaminants Analysis

et al. 2021

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“…Most commonly, imprinting polymerization is based on non-covalent forces, but covalent and semi-covalent imprinting has also been reported [ 27 ]. There are variations in where the imprinting occurs (bulk imprinting or surface imprinting [ 28 ]), as well as what materials are used (polymeric materials, inorganic materials [ 29 ] or hybrid materials [ 30 , 31 ]). In this work, the focus is on either bulk or surface imprinting in polymeric materials.…”

Section: Common Syntheses For Imprinting Polymerizationsmentioning

confidence: 99%

A Note about Crosslinking Density in Imprinting Polymerization

Mueller

2021

Molecules

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Imprinting polymerization is an exciting technique since it leads to specific binding sites, which are the basis of a variety of applications, such as sensors, detectors, and catalysts. The specific binding sites are created using templates and then fixing the structure of the binding site with crosslinking. The literature review of imprinting polymerizations shows that the crosslinking density governs the physical properties of the resulting molecularly imprinted polymer (MIP). It is also a factor governing the capacity and the selectivity of MIPs. Reviewing polymer science data and theory, the crosslinking density commonly used in MIP synthesis is unusually high. The data reviewed here suggest that more research is needed to determine the optimal crosslinking density for MIPs.

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“…Molecularly imprinted polymers are promising sorbents for separation because they exhibit high affinity and selectivity similar to receptors for target molecules [ 13 , 15 ]. The latest reports from the literature [ 16 , 17 , 18 ] indicate that the molecular imprinting technique is an increasingly developing branch of material engineering that produces materials in various forms, for example, monoliths, membranes, or core-shell sorbents. They have been used in solid phase extraction [ 19 , 20 , 21 ], catalysis [ 22 ], or as chemical sensors [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

Membrane Emulsification Process as a Method for Obtaining Molecularly Imprinted Polymers

Wolska

Falizi

2021

Polymers

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The membrane emulsification process (ME) using a metallic membrane was the first stage for preparing a spherical and monodisperse thermoresponsive molecularly imprinted polymer (TSMIP). In the second step of the preparation, after the ME process, the emulsion of monomers was then polymerized. Additionally, the synthesized TSMIP was fabricated using as a functional monomer N-isopropylacrylamide, which is thermosensitive. This special type of polymer was obtained for the recognition and determination of trace bisphenol A (BPA) in aqueous media. Two types of molecularly imprinted polymers (MIPs) were synthesized using amounts of BPA of 5 wt.% (MIP-2) and 7 wt.% (MIP-1) in the reaction mixtures. Additionally, a non-imprinted polymer (NIP) was also synthesized. Polymer MIP-2 showed thermocontrolled recognition for imprinted molecules and a higher binding capacity than its corresponding non-imprinted polymer and higher than other molecularly imprinted polymer (MIP-1). The best condition for the sorption process was at a temperature of 35 °C, that is, at a temperature close to the phase transition value for poly(N-isopropylacrylamide). Under these conditions, the highest levels of BPA removal from water were achieved and the highest adsorption capacity of MIP-2 was about 0.5 mmol g−1 (about 114.1 mg g−1) and was approximately 20% higher than for MIP-1 and NIP. It was also observed that during the kinetic studies, under these temperature conditions, MIP-2 sorbed BPA faster and with greater efficiency than its non-imprinted analogue.

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Molecularly imprinted polymers by the surface imprinting technique

Cited by 158 publications

References 235 publications

Molecularly Imprinted Polymers Combined with Electrochemical Sensors for Food Contaminants Analysis

Molecularly Imprinted Polymers Combined with Electrochemical Sensors for Food Contaminants Analysis

A Note about Crosslinking Density in Imprinting Polymerization

Membrane Emulsification Process as a Method for Obtaining Molecularly Imprinted Polymers

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