Synthesis and characterization of molecularly imprinted polymer for ethinylestradiol

Pereira, Arnaldo César; Bettio, Guilherme Braga; Oliveira, Ana Elisa Ferreira; Silva, Ricky Cássio; Borges, Keyller Bastos

doi:10.1007/s11696-018-0557-9

Cited by 7 publications

(6 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several studies [ 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 ] have reported the determination of E2 through different sensor surfaces. Electrochemical oxidation of the phenolic group present in the hormone leads to electrode fouling, due to the formation of an insoluble layer on its surface, resulting in electrode passivation and negatively impacting the analytical performance [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

An Electrochemical Screen-Printed Sensor Based on Gold-Nanoparticle-Decorated Reduced Graphene Oxide–Carbon Nanotubes Composites for the Determination of 17-β Estradiol

et al. 2023

View full text Add to dashboard Cite

In this study, a screen-printed electrode (SPE) modified with gold-nanoparticle-decorated reduced graphene oxide–carbon nanotubes (rGO-AuNPs/CNT/SPE) was used for the determination of estradiol (E2). The AuNPs were produced through an eco-friendly method utilising plant extract, eliminating the need for severe chemicals, and remove the requirements of sophisticated fabrication methods and tedious procedures. In addition, rGO-AuNP serves as a dispersant for the CNT to improve the dispersion stability of CNTs. The composite material, rGO-AuNPs/CNT, underwent characterisation through scanning electron microscopy (SEM), ultraviolet–visible absorption spectroscopy (UV–vis), Fourier-transform infrared (FTIR) spectroscopy, and atomic force microscopy (AFM). The electrochemical performance of the modified SPE for estradiol oxidation was characterised using cyclic voltammetry (CV) and differential pulse voltammetry (DPV) techniques. The rGO-AuNPs/CNT/SPE exhibited a notable improvement compared to bare/SPE and GO-CNT/SPE, as evidenced by the relative peak currents. Additionally, we employed a baseline correction algorithm to accurately adjust the sensor response while eliminating extraneous background components that are typically present in voltammetric experiments. The optimised estradiol sensor offers linear sensitivity from 0.05–1.00 µM, with a detection limit of 3 nM based on three times the standard deviation (3δ). Notably, this sensing approach yields stable, repeatable, and reproducible outcomes. Assessment of drinking water samples indicated an average recovery rate of 97.5% for samples enriched with E2 at concentrations as low as 0.5 µM%, accompanied by only a modest coefficient of variation (%CV) value of 2.7%.

show abstract

Section: Introductionmentioning

confidence: 99%

An Electrochemical Screen-Printed Sensor Based on Gold-Nanoparticle-Decorated Reduced Graphene Oxide–Carbon Nanotubes Composites for the Determination of 17-β Estradiol

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Inuence of the amount of the MIP As shown in Fig. 4, the increase in the proportion of the MIP increased the response of the electrode; however, when the proportion was greater than 2.5%, there was a decrease in the analytical signal, which can be related to the increase in resistance to electron transfer, 26 making it difficult for the analyte to diffuse on the electrode surface. Therefore, the proportion of 2.5% was chosen for the development of the modied electrode.…”

Section: Analytical Methods Papermentioning

confidence: 97%

“…These materials also have characteristics of roughness and porosity (micro-wells). 26 Fig. 2 presents the FTIR spectra of the MIP and NIP, from which it is possible to compare these materials and obtain information on the functional groups of these polymers.…”

Section: Characterization Of the Mipmentioning

confidence: 99%

“…The band at 3568 cm À1 corresponds to the O-H stretching vibration of carboxylic acid of MAA. 26 The bands at 2975 (asymmetric) and 2933 cm À1 (symmetric) are due to the stretching vibration of the CH 2 group. The bands observed at 1721 and 1626 cm À1 are due to a vibrational band relative to the carboxyl group (C]O) of EGDMA.…”

Section: Characterization Of the Mipmentioning

confidence: 99%

“…27,28 The bands at 1464 and 1395 cm À1 are due to ester angular deformation of O-CH 2 of EGDMA. The band present at 26 The band at 794 cm À1 corresponds to the ] C-H deformation of the out-of-plane vibration. 29 The spectra observed for the MIP and NIP show a similarity between the structures of the obtained polymers, a coherent result, since both were synthesized with the same monomer and crosslinker.…”

Section: Characterization Of the Mipmentioning

confidence: 99%

See 2 more Smart Citations

An electrochemical sensor modified with a molecularly imprinted polymer and carbon black for 17-β-estradiol detection

Silva

Pereira

2022

Anal. Methods

Self Cite

View full text Add to dashboard Cite

show abstract

Removal of the environmental pollutant carbamazepine using molecular imprinted adsorbents: Molecular simulation, adsorption properties, and mechanisms

Liang

Chen

et al. 2020

Water Research

View full text Add to dashboard Cite

Synthesis and characterization of molecularly imprinted polymer for ethinylestradiol

Cited by 7 publications

References 36 publications

An Electrochemical Screen-Printed Sensor Based on Gold-Nanoparticle-Decorated Reduced Graphene Oxide–Carbon Nanotubes Composites for the Determination of 17-β Estradiol

An Electrochemical Screen-Printed Sensor Based on Gold-Nanoparticle-Decorated Reduced Graphene Oxide–Carbon Nanotubes Composites for the Determination of 17-β Estradiol

An electrochemical sensor modified with a molecularly imprinted polymer and carbon black for 17-β-estradiol detection

Removal of the environmental pollutant carbamazepine using molecular imprinted adsorbents: Molecular simulation, adsorption properties, and mechanisms

Contact Info

Product

Resources

About