Voltammetric sensor for theophylline using sol–gel immobilized molecularly imprinted polymer particles

Bates, Ferdia; Valle, Manel del

doi:10.1007/s00604-014-1413-4

Cited by 40 publications

(20 citation statements)

References 42 publications

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“…The working, counter and Ag/AgCl reference electrodes were covered by injecting ca.10 L of an aqueous solution of 500 mM KCl, 20 http://www.ntmdt-si.com/). The cantilever for AFM was a "Golden" silicon probe (NSG01, NT-MDT) with 6 nm probe tip size and 144 kHz resonant frequency.…”

Section: Electrochemical Examination Of Peptides and Reg1b With Peptimentioning

confidence: 99%

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Polymers imprinted with three REG1B peptides for electrochemical determination of Regenerating Protein 1B, a urinary biomarker for pancreatic ductal adenocarcinoma

et al. 2017

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Three peptides (each containing 13-18 amino acids) were synthesized and used as templates for molecular imprinting and epitope recognition of the regenerating Protein 1B (REG1B), which is one of the urinary biomarkers for pancreatic ductal adenocarcinoma (PDAC). Poly(ethylene-co-vinyl alcohol)s were employed as the host for molecular imprinting of the peptides. Following their preparation, the molecularly imprinted polymers (MIP) were examined by cyclic voltammetry. The electrochemical responses of a screen-printed gold substrate coated with the MIP were measured at a working voltage of 300 mV (vs. Ag/AgCl); the entire protein and the peptides gave similar responses at concentrations of <1.0 pg⋅mL⁻¹, with detection limits as low as 0.1 pg⋅mL⁻¹. Urine samples from healthy and PDAC patients were then analyzed by using this modified gold electrode, and the results are in agreement with data obtained with ELISA.

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Section: Electrochemical Examination Of Peptides and Reg1b With Peptimentioning

confidence: 99%

“…Small molecules (e.g. quercetin [19], theophylline [20], 3-hydroxyanthranilic [21] and imidacloprid [22]), proteins (e.g. albumin, lysozyme [23] and nuclear matrix protein 22 (NMP22) [24]) and even microorganisms (e.g.…”

Section: Introductionmentioning

confidence: 99%

Polymers imprinted with three REG1B peptides for electrochemical determination of Regenerating Protein 1B, a urinary biomarker for pancreatic ductal adenocarcinoma

et al. 2017

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“…Synthesis of the MIP was done according to previously described protocols elsewhere, using the precipitation polymerization method [16,22]. Briefly, NDMA (0.135 mmol, template) and MAA (0.45 mmol, monomer) were first mixed in 40 mL of methanol for 1 h in ice to allow the creation of complexes between the functional monomer and the template via interfacial hydrogen bonding.…”

Section: Mip/nip Synthesismentioning

confidence: 99%

Electrochemical detection of N‐nitrosodimethylamine using a molecular imprinted polymer

Cetó

Saint

Chow

et al. 2016

Sensors and Actuators B: Chemical

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“…The molecular imprinting technique is one of the most ideal and promising methods for the preparation of adsorption materials. [23][24][25][26][27][28] Magnetic molecularly imprinted polymers (MMIPs) that combine molecular imprinting techniques with magnetic separation techniques not only have the imprinting selectivity of the target, but can also be quickly separated under the action of an external magnetic field. [29][30][31][32][33] After target compound adsorption, the magnetic sorbent can be easily isolated from matrix solutions by applying an external magnetic field, without the need for centrifugation or filtration.…”

Section: Introductionmentioning

confidence: 99%

Preparation of magnetic molecularly imprinted polymers for the rapid detection of diethylstilbestrol in milk samples

Huang

Zhao

2019

J Sci Food Agric

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BACKGROUND: Diethylstilbestrol (DES) residues are harmful to human health because of their potential carcinogenic properties. Therefore, it is important to develop a fast and efficient pretreatment method to prevent their harmful effects on human health and the environment. RESULTS: In this paper, two types of magnetic molecularly imprinted polymers (MMIPs) of DES were prepared by bulk polymerization and the sol-gel method, respectively. The synthetic materials were characterized using Fourier transform infrared spectroscopy, scanning electron microscopy and thermogravimetric analysis. Adsorption capacities of the bulk and sol-gel MMIPs were investigated. A rapid detection method was developed using the two types of MMIPs as sorbents, coupled to high-performance liquid chromatography, for the determination of DES residues in milk samples. Under optimized conditions, the limit of detection (S/N = 3) of both methods for DES was 2.0 g L −1 ; and the linear response range to DES was 0.1-500 mg L −1 . The milk samples were analyzed according to this method with good recoveries of 88.3-97.6 and 90.5-103.5% for the two types of MMIPs, respectively. CONCLUSIONS: The method described had high sensitivity and high selectivity, and could prove to be a new method for the rapid determination of DES residues in milk samples.where C 0 (μg mL −1 ) is the initial concentration of DES in acetonitrile solution, C (μg mL −1 ) is the equilibrium concentration of DES in acetonitrile solution, V (mL) is the volume of solution and W is the mass of MMIPs/MNIPs (g).J Sci Food Agric 2019; 99: 4452-4459Adsorption kinetics experiments Figure 6 shows the adsorption isotherms of MMIPs and MNIPs for DES prepared by bulk polymerization and the sol-gel method. The adsorption capacity of bulk and sol-gel MMIPs for DES increased J Sci Food Agric 2019; 99: 4452-4459

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Voltammetric sensor for theophylline using sol–gel immobilized molecularly imprinted polymer particles

Cited by 40 publications

References 42 publications

Polymers imprinted with three REG1B peptides for electrochemical determination of Regenerating Protein 1B, a urinary biomarker for pancreatic ductal adenocarcinoma

Polymers imprinted with three REG1B peptides for electrochemical determination of Regenerating Protein 1B, a urinary biomarker for pancreatic ductal adenocarcinoma

Electrochemical detection of N‐nitrosodimethylamine using a molecular imprinted polymer

Preparation of magnetic molecularly imprinted polymers for the rapid detection of diethylstilbestrol in milk samples

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