Thin-film electrochemical sensor for diphenylamine detection using molecularly imprinted polymers

Granado, Vera L.V.; Gutiérrez-Capitán, Manuel; Fernández‐Sánchez, César; Gomes, M. Teresa S.R.; Rudnitskaya, Alisa; Jimenez-Jorquera, Cecilia

doi:10.1016/j.aca.2013.11.038

Cited by 68 publications

(32 citation statements)

References 35 publications

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“…Table 11 summarizes the related techniques and their analytical performances for drugs, organic molecules and biomacromolecules. 523,[526][527][528][529][530][531][532][533][534][535][536][537][538][539][540][541][542][543][544][545] For LSV and CV, their potentials linearly change with time. While the potential sweep of DPV and SWV comprises constant increments in either rectangular pulse or square oscillations, which can offer better sensitivity and signal-to-noise ratios than LSV and CV, since programmed current sampling is applied.…”

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confidence: 99%

Molecular imprinting: perspectives and applications

et al. 2016

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a Molecular imprinting technology (MIT), often described as a method of making a molecular lock to match a molecular key, is a technique for the creation of molecularly imprinted polymers (MIPs) with tailor-made binding sites complementary to the template molecules in shape, size and functional groups. Owing to their unique features of structure predictability, recognition specificity and application universality, MIPs have found a wide range of applications in various fields. Herein, we propose to comprehensively review the recent advances in molecular imprinting including versatile perspectives and applications, concerning novel preparation technologies and strategies of MIT, and highlight the applications of MIPs. The fundamentals of MIPs involving essential elements, preparation procedures and characterization methods are briefly outlined.Smart MIT for MIPs is especially highlighted including ingenious MIT (surface imprinting, nanoimprinting, etc.), special strategies of MIT (dummy imprinting, segment imprinting, etc.) and stimuli-responsive MIT (single/dual/ multi-responsive technology). By virtue of smart MIT, new formatted MIPs gain popularity for versatile applications, including sample pretreatment/chromatographic separation (solid phase extraction, monolithic column chromatography, etc.) and chemical/biological sensing (electrochemical sensing, fluorescence sensing, etc.). Finally, we propose the remaining challenges and future perspectives to accelerate the development of MIT, and to utilize it for further developing versatile MIPs with a wide range of applications (650 references).

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Section: View Article Onlinementioning

confidence: 99%

Molecular imprinting: perspectives and applications

et al. 2016

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“…Electropolymerization is one of the methods. It provides some advantages, including thickness control of the polymer layer (which is crucial to the sensing of the analyte), ability to attach the sensor film to electrode surfaces of any shape and size, and compatibility with combinatorial and high-throughput approaches critical for the commercial development of molecular imprinting [21][22][23][24][25][26]. Chitosan (CS) is a non-toxic biopolymer with good biocompatibility that is derived through a series of chemical treatments from the chitin components of the shells of crustaceans.…”

Section: Introductionmentioning

confidence: 99%

A Facile Approach to Preparing Molecularly Imprinted Chitosan for Detecting 2,4,6-Tribromophenol with a Widely Linear Range

Huang¹,

Lü²,

Wu³

et al. 2017

Environments

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Abstract:The environmental pollution of 2,4,6-tribromophenol (TBP) has attracted attention. Based on an urgent need for the better provision of clean water, in situ determination of TBP is of great importance. Here, a facile and effective approach for detecting TBP is developed, based on coupling molecular imprinting technique with electrodeposition of chitosan (CS) on the gold electrode. The TBP imprinting CS film was fabricated by using CS as functional material and TBP as template molecule. The experiments show that the morphologies and electrochemical properties of the imprinted film sensor was different from non-imprinted film electrode. The current of the imprinted film was linearly proportional to the TBP concentration, with a wide linear range of 1.0 × 10 −7 mol·L −1 to 1.0 × 10 −3 mol·L −1 . By selecting drop-coating method as a reference for controlled trials with the same functional material, the results illustrated that the electrodeposition enjoyed a widely linear range advantage.

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“…Finally, the template molecules are extracted, and the MIPs with tailor-made recognition sites are obtained. So far, due to the advantages of MIPs, namely excellent molecular recognition performance, low cost, high physical and chemical stability, and application universality, they have received much attention and become attractive in many fields, such as solid phase extraction [3,4], chiral separation [5], immune-like assay [6], antibody simulation [7], chemical sensors [8,9], drug delivery [10], proteomics [11], and wastewater treatment [12]. …”

Section: Introductionmentioning

confidence: 99%

Study on Dicyandiamide-Imprinted Polymers with Computer-Aided Design

Liang

Wang²,

et al. 2016

IJMS

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With the aid of theoretical calculations, a series of molecularly imprinted polymers (MIPs) were designed and prepared for the recognition of dicyandiamide (DCD) via precipitation polymerization using acetonitrile as the solvent at 333 K. On the basis of the long-range correction method of M062X/6-31G(d,p), we simulated the bonding sites, bonding situations, binding energies, imprinted molar ratios, and the mechanisms of interaction between DCD and the functional monomers. Among acrylamide (AM), N,N’-methylenebisacrylamide (MBA), itaconic acid (IA), and methacrylic acid (MAA), MAA was confirmed as the best functional monomer, because the strongest interaction (the maximum number of hydrogen bonds and the lowest binding energy) occurs between DCD and MAA, when the optimal molar ratios for DCD to the functional monomers were used, respectively. Additionally, pentaerythritol triacrylate (PETA) was confirmed to be the best cross-linker among divinylbenzene (DVB), ethylene glycol dimethacrylate (EGDMA), trimethylolpropane trimethylacrylate (TRIM), and PETA. This is due to the facts that the weakest interaction (the highest binding energy) occurs between PETA and DCD, and the strongest interaction (the lowest binding energy) occurs between PETA and MAA. Depending on the results of theoretical calculations, a series of MIPs were prepared. Among them, the ones prepared using DCD, MAA, and PETA as the template, the functional monomer, and the cross-linker, respectively, exhibited the highest adsorption capacity for DCD. The apparent maximum absorption quantity of DCD on the MIP was 17.45 mg/g.

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Thin-film electrochemical sensor for diphenylamine detection using molecularly imprinted polymers

Cited by 68 publications

References 35 publications

Molecular imprinting: perspectives and applications

Molecular imprinting: perspectives and applications

A Facile Approach to Preparing Molecularly Imprinted Chitosan for Detecting 2,4,6-Tribromophenol with a Widely Linear Range

Study on Dicyandiamide-Imprinted Polymers with Computer-Aided Design

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