Molecularly Imprinted Polymers: Latest Advances and Applications

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Smart and Functional Polymers".

Deadline for manuscript submissions: 25 October 2024 | Viewed by 1386

Special Issue Editor


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Guest Editor
Department of Natural Sciences, Mathematics and Statistics, Federal Rural University of the Semi-Arid, Mossoró 59625-900, RN, Brazil
Interests: analytical chemistry; polymer; biomimetic sensor; adsorption; optodes; nanomaterials
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Special Issue Information

Dear Colleagues,

New molecularly imprinted polymers (MIPs) are synthetic polymers, also known as smart materials, designed to recognize specific target molecular structures. In recent years, molecular imprinting technology has emerged as a prominent topic in the fabrication of artificial systems capable of mimicking natural receptors. The main aim of this Special Issue is to explore the latest progress made in imprinted techniques and provide a collection of high-quality full research papers, communications, and critical reviews covering both applied and fundamental advances in this field.

Prof. Dr. Sabir Khan
Guest Editor

Manuscript Submission Information

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Keywords

  • molecularly imprinted polymers (MIPs)
  • biomimetic sensor
  • computer simulation
  • pollution abatement
  • hybrid materials
  • nanocomposites
  • modelling and optimisation
  • statistical techniques

Published Papers (2 papers)

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Research

19 pages, 8340 KiB  
Article
Smartphone-Based Rapid Quantitative Detection Platform with Imprinted Polymer for Pb (II) Detection in Real Samples
by Flor de Liss Meza López, Christian Jacinto Hernández, Jaime Vega-Chacón, Juan C. Tuesta, Gino Picasso, Sabir Khan, María D. P. T. Sotomayor and Rosario López
Polymers 2024, 16(11), 1523; https://doi.org/10.3390/polym16111523 - 28 May 2024
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Abstract
This paper reports the successful development and application of an efficient method for quantifying Pb2+ in aqueous samples using a smartphone-based colorimetric device with an imprinted polymer (IIP). The IIP was synthesized by modifying the previous study; using rhodizonate, 2-acrylamido-2-methylpropane sulfonic acid [...] Read more.
This paper reports the successful development and application of an efficient method for quantifying Pb2+ in aqueous samples using a smartphone-based colorimetric device with an imprinted polymer (IIP). The IIP was synthesized by modifying the previous study; using rhodizonate, 2-acrylamido-2-methylpropane sulfonic acid (AMPS), N,N′-methylenebisacrylamide (MBA), and potassium persulfate (KPS). The polymers were then characterized. An absorption study was performed to determine the optimal conditions for the smartphone-based colorimetric device processing. The device consists of a black box (10 × 10 × 10 cm), which was designed to ensure repeatability of the image acquisition. The methodology involved the use of a smartphone camera to capture images of IIP previously exposed at Pb2+ solutions with various concentrations, and color channel values were calculated (RGB, YMK HSVI). PLS multivariate regression was performed, and the optimum working range (0–10 mg L−1) was determined using seven principal components with a detection limit (LOD) of 0.215 mg L−1 and R2 = 0.998. The applicability of a colorimetric sensor in real samples showed a coefficient of variation (% RSD) of less than 9%, and inductively coupled plasma mass spectrometry (ICP–MS) was applied as the reference method. These results confirmed that the quantitation smartphone-based colorimetric sensor is a suitable analytical tool for reliable on-site Pb2+ monitoring. Full article
(This article belongs to the Special Issue Molecularly Imprinted Polymers: Latest Advances and Applications)
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29 pages, 9352 KiB  
Article
Preparation of a Molecularly Imprinted Polymer on Polyethylene Terephthalate Platform Using Reversible Addition-Fragmentation Chain Transfer Polymerization for Tartrazine Analysis via Smartphone
by Christian Jacinto Hernández, Raúl Medina, Ily Maza Mejía, Mario Hurtado, Sabir Khan, Gino Picasso, Rosario López and María D. P. T. Sotomayor
Polymers 2024, 16(10), 1325; https://doi.org/10.3390/polym16101325 - 8 May 2024
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Abstract
This work describes the preparation of a molecularly imprinted polymer (MIP) platform on polyethylene terephthalate (MIP-PET) via RAFT polymerization for analyzing tartrazine using a smartphone. The MIP-PET platform was characterized using Fourier transform infrared (FTIR) techniques, Raman Spectroscopy, X-ray photoelectron spectroscopy (XPS), and [...] Read more.
This work describes the preparation of a molecularly imprinted polymer (MIP) platform on polyethylene terephthalate (MIP-PET) via RAFT polymerization for analyzing tartrazine using a smartphone. The MIP-PET platform was characterized using Fourier transform infrared (FTIR) techniques, Raman Spectroscopy, X-ray photoelectron spectroscopy (XPS), and confocal microscopy. The optimal pH and adsorption time conditions were determined. The adsorption capacity of the MIP-PET plates with RAFT treatment (0.057 mg cm−2) was higher than that of the untreated plates (0.028 mg cm−2). The kinetic study revealed a pseudo-first-order model with intraparticle diffusion, while the isotherm study indicated a fit for the Freundlich model. Additionally, the MIP-PET demonstrated durability by maintaining its adsorption capacity over five cycles of reuse without significant loss. To quantify tartrazine, images were captured using a smartphone, and the RGB values were obtained using the ImageJ® free program. A partial least squares regression (PLS) was performed, obtaining a linear range of 0 to 7 mg L−1 of tartrazine. The accuracy of the method was 99.4% (4.97 ± 0.74 mg L−1) for 10 samples of 5 mg L−1. The concentration of tartrazine was determined in two local soft drinks (14.1 mg L−1 and 16.5 mg L−1), with results comparable to the UV–visible spectrophotometric method. Full article
(This article belongs to the Special Issue Molecularly Imprinted Polymers: Latest Advances and Applications)
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