Physico-chemical characterization of flavonol molecularly imprinted polymers

Gómez-Pineda, Luis Enrique; Pina‐Luis, Georgina; Cuán, A.; García-Calzón, J.A.; Dı́az-Garcı́a, Marta Elena

doi:10.1016/j.reactfunctpolym.2010.12.013

Cited by 15 publications

(8 citation statements)

References 20 publications

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“…This result precluded the assumption that the porous features of the polymers are not dependent on the imprinted template. Similar results have been reported by Gó mez-Pineda et al [38].…”

Section: Characterization Of Mips Adsorbent Particlessupporting

confidence: 92%

Molecularly imprinted polymers (MIPs): a functional material for removal of humic acid from peat water

Zulfikar

Wahyuningrum

Mukti

et al. 2016

Desalination and Water Treatment

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A B S T R A C TThe aim of this study is to investigate the use of moleculary imprinted polymers (MIPs) material as an alternative adsorbent for the adsorption of humic acid (HA) from peat water in batch mode. The MIPs were prepared with methyl methacrylate as a monomer, HA as templates, ethylene glycoldimethacrylate as a cross-linker, and dimethyl formamide as a solvent. The characteristics of MIPs were evaluated using Fourier transform infra-red spectroscopy, scanning electron microscope, and Brunauer-Emmett-Teller methods. The Langmuir, Freundlich, and Sips models were applied to describe the equilibrium isotherms using non-linear regression analysis. Pseudo-first-order, pseudo-second-order, intraparticles, and Boyd kinetic models were used to describe the kinetic data. The results showed that the equilibrium contact time was 60 min. The experimental results indicated that the percentage of sorption increases with an increase in the adsorbent dosage and temperature. The adsorption percentage decreased with increasing peat water pH from 2 to 12. The equilibrium data fitted well for the Langmuir adsorption isotherms, with monolayer adsorption capacity of MIPs found to be 45.45 mg/g. The results of the kinetic study show that the adsorption of HA onto MIPs could be described by the pseudo-second-order kinetic model with a rate constant in the range of 0.034-0.115 g/mg min and controlled by film diffusion, with the effective diffusion coefficient was found in the range of 7.42 × 10 −8 -13.84 × 10 −8 cm 2 /s. Thermodynamic parameters data indicated that under the experimental conditions, the HA adsorption process was non-spontaneous and endothermic, with the Gibbs free energy (ΔG˚) in the range of 3.71-1.17 kJ/mol, whereas enthalpy (ΔH˚) and entropy (ΔS˚) at 16.17 and 42.70 J mol −1 , respectively.

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“…This result precluded the assumption that the porous features of the polymers are not dependent on the imprinted template. Similar results have been reported by Gó mez-Pineda et al [38].…”

Section: Characterization Of Mips Adsorbent Particlessupporting

confidence: 92%

Molecularly imprinted polymers (MIPs): a functional material for removal of humic acid from peat water

Zulfikar

Wahyuningrum

Mukti

et al. 2016

Desalination and Water Treatment

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“…Many isotherms have been reported in literature 35, 36 for evaluating the binding properties of MIP.…”

Section: Resultsmentioning

confidence: 99%

Fast and selective extraction of chloramphenicol from soil by matrix solid‐phase dispersion using molecularly imprinted polymer as dispersant

Wang

Jia

Sun

et al. 2011

J of Separation Science

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The molecularly imprinted polymer (MIP) was synthesized and used as dispersant of matrix solid-phase dispersion (MSPD) for the extraction of chloramphenicol (CAP) in soil samples. The satisfactory recovery of CAP was obtained by the optimized extraction conditions: 1:2 as the ratio of sample to MIPs; 5 min as the dispersion time; 30% aqueous methanol as washing solvent and methanol as elution solvent. The CAP extracted from soil was determined by LC-MS/MS. The slight ion suppression phenomenon was observed for the CAP when the sample was cleaned up by MSPD with MIP as dispersant, when compared with C18 as MSPD dispersant, which caused significant ion suppression. LOD of CAP is 4.1 ng/g. RSDs of intra- and inter-day tests ranging from 3.1 to 6.2% and from 3.9 to 8.3% are obtained. At all three fortified levels (20, 100 and 500 ng/g), recoveries of CAP are in the range of 86.9-92.6%. The effect of ageing time of spiked soil sample on the CAP recovery was examined. The CAP recovery decreased from 91.0 to 36.9% when the ageing time changed from 1 day to 4 wk.

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“…Some typical monomers are methacrlylic acid, acrylic acid, itaconic acid, 2-(trifluoromethyl)acrylic acid, 4-vinylpyridine, acrylamide, methacrylamid, and 2-hydroxyethyl. Molecular modelling can be used for the selection of the functional monomer and for the evaluation of the stability of the pre-polymerization complex [ 113 , 114 , 115 ]. It can also be used to study the effect of the porogenic solvent on the selectivity of MIPs [ 116 ].…”

Section: Molecular Imprintingmentioning

confidence: 99%

The Importance of Developing Electrochemical Sensors Based on Molecularly Imprinted Polymers for a Rapid Detection of Antioxidants

et al. 2021

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This review aims to pin out the importance of developing a technique for rapid detection of antioxidants, based on molecular imprinting techniques. It covers three major areas that have made great progress over the years in the field of research, namely: antioxidants characterization, molecular imprinting and electrochemistry, alone or combined. It also reveals the importance of bringing these three areas together for a good evaluation of antioxidants in a simple or complex medium, based on selectivity and specificity. Although numerous studies have associated antioxidants with molecular imprinting, or antioxidants with electrochemistry, but even electrochemistry with molecular imprinting to valorize different compounds, the growing prominence of antioxidants in the food, medical, and paramedical sectors deserves to combine the three areas, which may lead to innovative industrial applications with satisfactory results for both manufacturers and consumers.

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Physico-chemical characterization of flavonol molecularly imprinted polymers

Cited by 15 publications

References 20 publications

Molecularly imprinted polymers (MIPs): a functional material for removal of humic acid from peat water

Molecularly imprinted polymers (MIPs): a functional material for removal of humic acid from peat water

Fast and selective extraction of chloramphenicol from soil by matrix solid‐phase dispersion using molecularly imprinted polymer as dispersant

The Importance of Developing Electrochemical Sensors Based on Molecularly Imprinted Polymers for a Rapid Detection of Antioxidants

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