Developments of Molecularly Imprinted Polymers

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

Deadline for manuscript submissions: closed (31 July 2023) | Viewed by 3316

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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,

Molecularly Imprinted Polymers (MIPs) are synthetic polymers with a tailor-made capacity to recognize a target molecular structure. In recent years, molecular imprinting technology has become a hot topic in the preparation of artificial systems capable of mimicking natural receptors. The expanding number of synthetical methods, the accessibility to many different formats and morphologies, the progress made in understanding the molecular recognition mechanisms that characterize them, and the broad spectrum of applications based on their selectivity properties make these materials a vibrant and constantly topical field of research. This Special Issue of Polymers provides a collection of high-quality full research papers, communications, and critical reviews covering both applied and fundamental aspects of molecular imprinting technology. The scope includes but is not limited to:

  1. Synthesis of new materials based on molecular imprinting and magnetic molecular imprinting.
  2. Developing electrochemical, optical, and biomimetic sensors based on molecularly imprinted polymers.
  3. Applications of molecularly imprinted polymers.
  4. Hybrid materials.
  5. Theoretical study, simulation, and smart materials.

Prof. Dr. Sabir Khan
Guest Editor

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Published Papers (2 papers)

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Research

14 pages, 2697 KiB  
Article
Development and Characterization of a Molecularly Imprinted Polymer for the Selective Removal of Brilliant Green Textile Dye from River and Textile Industry Effluents
by Miguel Luna Quinto, Sabir Khan, Jaime Vega-Chacón, Bianca Mortari, Ademar Wong, Maria Del Pilar Taboada Sotomayor and Gino Picasso
Polymers 2023, 15(18), 3709; https://doi.org/10.3390/polym15183709 - 8 Sep 2023
Viewed by 1052
Abstract
In this paper, we present an alternative technique for the removal of Brilliant Green dye (BG) in aqueous solutions based on the application of molecularly imprinted polymer (MIP) as a selective adsorbent for BG. The MIP was prepared by bulk radical polymerization using [...] Read more.
In this paper, we present an alternative technique for the removal of Brilliant Green dye (BG) in aqueous solutions based on the application of molecularly imprinted polymer (MIP) as a selective adsorbent for BG. The MIP was prepared by bulk radical polymerization using BG as the template; methacrylic acid (MAA) as the functional monomer, selected via computer simulations; ethylene glycol dimethacrylate (EGDMA) as cross-linker; and 2,2′-azobis(2-methylpropionitrile) (AIBN) as the radical initiator. Scanning electron microscopy (SEM) analyses of the MIP and non-molecularly imprinted polymer (NIP)—used as the control material—showed that the two polymers exhibited similar morphology in terms of shape and size; however, N2 sorption studies showed that the MIP displayed a much higher BET surface (three times bigger) compared to the NIP, which is clearly indicative of the adequate formation of porosity in the former. The data obtained from FTIR analysis indicated the successful formation of imprinted polymer based on the experimental procedure applied. Kinetic adsorption studies revealed that the data fitted quite well with a pseudo-second order kinetic model. The BG adsorption isotherm was effectively described by the Langmuir isotherm model. The proposed MIP exhibited high selectivity toward BG in the presence of other interfering dyes due to the presence of specific recognition sites (IF = 2.53) on its high specific surface area (112 m2/g). The imprinted polymer also displayed a great potential when applied for the selective removal of BG in real river water samples, with recovery ranging from 99 to 101%. Full article
(This article belongs to the Special Issue Developments of Molecularly Imprinted Polymers)
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14 pages, 2031 KiB  
Article
Synthesis, Characterization, and Evaluation of a Novel Molecularly Imprinted Polymer (MIP) for Selective Quantification of Curcumin in Real Food Sample by UV-Vis Spectrophotometry
by Sergio Espinoza-Torres, Rosario López, Maria D. P. T. Sotomayor, Juan C. Tuesta, Gino Picasso and Sabir Khan
Polymers 2023, 15(16), 3332; https://doi.org/10.3390/polym15163332 - 8 Aug 2023
Cited by 9 | Viewed by 1784
Abstract
Curcumin is the main colorant of the curcuma longa plant, a food with many benefits for human health. This work aims to synthesize a novel molecularly imprinted polymer (MIP) for the selective detection of curcumin in real samples obtained from the local market [...] Read more.
Curcumin is the main colorant of the curcuma longa plant, a food with many benefits for human health. This work aims to synthesize a novel molecularly imprinted polymer (MIP) for the selective detection of curcumin in real samples obtained from the local market of Peru. MIPs were synthesized via bulk polymerization using curcumin, acrylamide, ethylene glycol dimethacrylate, ABCV, and acetonitrile. FTIR spectra showed equal spectra for MIP and NIP. N2 physisorption analysis presented a higher value BET surface for the MIP (28.5 m2 g−1) compared to the NIP (18.5 m2 g−1). The adsorption capacity of the MIP was evaluated using UV-vis spectrophotometry in the band around 430 nm. The adsorption kinetics found were of pseudo-second-order and a Qe value of 16.2 mg g−1. Furthermore, the adsorption process resembles the Freundlich adsorption model with a heterogeneity factor of less than 1 (0.61) and Kf greater for MIP (1.97). The selectivity test indicated that MIP is more selective for curcumin (Q = 13.20 mg g−1) than against interferents (Q = 2.19 mg g−1). The specific selectivity factor (S) obtained for the interferents was greater than 1 which indicates a good selectivity. Finally, the application of MIP in real samples using UV-vis spectrophotometry yielded a recovery value greater than 70%. Full article
(This article belongs to the Special Issue Developments of Molecularly Imprinted Polymers)
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