Recent advances of magnetic molecularly imprinted materials: From materials design to complex sample pretreatment

Cui, Yahan; Liu, Ding; Ding, Jie

doi:10.1016/j.trac.2021.116514

Cited by 46 publications

(20 citation statements)

References 169 publications

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“…This combination improves the adsorption selectivity and avoids being time-consuming due to the centrifugation and filtration stages in the separation process. Various methods and techniques for the development of magnetic nanoparticles as MMIP cores have been carried out to obtain the desired particle size, distribution, and chemical/physical properties [ 53 , 54 , 55 , 56 ]. In addition, MMIPs tend to have lower costs because they can be reused after a few simple processes.…”

Section: Introductionmentioning

confidence: 99%

Magnetic Molecularly Imprinted Polymers: An Update on Their Use in the Separation of Active Compounds from Natural Products

et al. 2022

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During the last few years, separation techniques using molecularly imprinted polymers (MIPs) have been developed, making breakthroughs using magnetic properties. Compared to conventional MIPs, magnetic molecularly imprinted polymers (MMIPs) have advantages in sample pretreatment due to their high specificity and selectivity towards analytes as a result of their larger specific surface areas and highly accessible specific binding sites. The techniques of isolation of active compounds from natural products usually require very long process times and low compound yields. When MMIPs are used in sample separation as Solid Phase Extraction (SPE) sorbents, the MMIPs are introduced into the dissolved sample and spread evenly, and they form bonds between the analyte and the MMIPs, which are then separated from the sample matrix using an external magnetic field. This process of separating analytes from the sample matrix makes the separation technique with MMIPs very simple and easy. This review discusses how to synthesize MMIPs, which factors must be considered in their synthesis, and their application in the separation of active compounds from natural products. MMIPs with magnetic core-shells made by co-precipitation can be a good choice for further development due to the high synthesis yield. Further optimization of the factors affecting the size and distribution of magnetic core-shell particles can obtain higher synthesis yields of MMIPs with higher adsorption capacity and selectivity. Thus, they can isolate target compounds from natural plants in high yields and purity.

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Section: Introductionmentioning

confidence: 99%

Magnetic Molecularly Imprinted Polymers: An Update on Their Use in the Separation of Active Compounds from Natural Products

et al. 2022

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“…This technique allows precise control of the stereochemical arrangement of ligands at the adsorption sites and thus, a selective recognition capability toward a given molecule/ion target. 10,11,20,21 In recent years, silica-coated MNPs with II have been widely investigated because, in addition to keeping their magnetic properties, they show an improvement in chemical stability and high selectivity for the target ion. [20][21][22][23][24] Regarding the synthesis of these composites, the sol-gel method is the most widely used.…”

Section: Introductionmentioning

confidence: 99%

“…10,11,20,21 In recent years, silica-coated MNPs with II have been widely investigated because, in addition to keeping their magnetic properties, they show an improvement in chemical stability and high selectivity for the target ion. [20][21][22][23][24] Regarding the synthesis of these composites, the sol-gel method is the most widely used. In particular, the use of the socalled one-pot method or co-condensation with imprinting offers advantages over the graing method in terms of the increase of surface area, equilibrium adsorption capacity and kinetics.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…In recent years, silica-coated MNPs with II have been widely investigated because, in addition to keeping their magnetic properties, they show an improvement in chemical stability and high selectivity for the target ion. 20–24…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

An ion imprinted magnetic organosilica nanocomposite for the selective determination of traces of Cd(ii) in a minicolumn flow-through preconcentration system coupled with graphite furnace atomic absorption spectroscopy

et al. 2022

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Magnetic materials as adsorbents for the pre‐concentration and separation of active ingredients from herbal medicine

Bai,

Teng,

Zhang

et al. 2024

J of Separation Science

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Herbal medicine (HM) is crucial in disease management and contains complex compounds with few active pharmacological ingredients, presenting challenges in quality control of raw materials and formulations. Effective separation, identification, and analysis of active components are vital for HM efficacy. Traditional methods like liquid‐liquid extraction and solid‐phase extraction are time‐consuming and environmentally concerning, with limitations such as sorbent issues, pressure, and clogging. Magnetic solid‐phase extraction uses magnetic sorbents for targeted analyte separation and enrichment, offering rapid, pressure‐free separation. However, inorganic magnetic particles’ aggregation and oxidation, as well as lack of selectivity, have led to the use of various coatings and modifications to enhance specificity and selectivity for complex herbal samples. This review delves into magnetic composites in HM pretreatment, specifically focusing on encapsulated or modified magnetic nanoparticles and materials like silica, ionic liquids, graphene family derivatives, carbon nanotubes, metal‐organic frameworks, covalent organic frameworks, and molecularly imprinted polymers.

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Recent advances of magnetic molecularly imprinted materials: From materials design to complex sample pretreatment

Cited by 46 publications

References 169 publications

Magnetic Molecularly Imprinted Polymers: An Update on Their Use in the Separation of Active Compounds from Natural Products

Magnetic Molecularly Imprinted Polymers: An Update on Their Use in the Separation of Active Compounds from Natural Products

An ion imprinted magnetic organosilica nanocomposite for the selective determination of traces of Cd(ii) in a minicolumn flow-through preconcentration system coupled with graphite furnace atomic absorption spectroscopy

Magnetic materials as adsorbents for the pre‐concentration and separation of active ingredients from herbal medicine

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