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Wang Y, Guo M, Li Y, Chen Y, Wei H, Mo X, Chai G, Du Y, Hu F. Development of a dual-template molecularly imprinted electrochemical sensor for the simultaneous detection of depression markers 5-HT and Glu. Mikrochim Acta 2024; 191:528. [PMID: 39120734 DOI: 10.1007/s00604-024-06558-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2024] [Accepted: 07/13/2024] [Indexed: 08/10/2024]
Abstract
A dual-template molecularly imprinted electrochemical sensor was developed for the simultaneous detection of serotonin (5-HT) and glutamate (Glu). First, amino-functionalized reduced graphene oxide (NRGO) was used as the modification material of a GCE to increase its electrical conductivity and specific surface area, using Glu and 5-HT as dual-template molecules and o-phenylenediamine (OPD) with self-polymerization ability as functional monomers. Through self-assembly and electropolymerization, dual-template molecularly imprinted polymers were formed on the electrode. After removing the templates, the specific recognition binding sites were exposed. The amount of NRGO, polymerization parameters, and elution parameters were further optimized to construct a dual-template molecularly imprinted electrochemical sensor, which can specifically recognize double-target molecules Glu and 5-HT. The differential pulse voltammetry (DPV) technique was used to achieve simultaneous detection of Glu and 5-HT based on their distinct electrochemical activities under specific conditions. The sensor showed a good linear relationship for Glu and 5-HT in the range 1 ~ 100 μM, and the detection limits were 0.067 μM and 0.047 μM (S/N = 3), respectively. The sensor has good reproducibility, repeatability, and selectivity. It was successfully utilized to simultaneously detect Glu and 5-HT in mouse serum, offering a more dependable foundation for objectively diagnosing and early warning of depression. Additionally, the double signal sensing strategy also provides a new approach for the simultaneous detection of both electroactive and non-electroactive substances.
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Affiliation(s)
- Yanping Wang
- School of Pharmacy, Lanzhou University, Lanzhou, 730000, China
- Codonopsis Radix Industrial Technology Engineering Research Center, Gansu Province, 730000, China
| | - Min Guo
- School of Pharmacy, Lanzhou University, Lanzhou, 730000, China
- Codonopsis Radix Industrial Technology Engineering Research Center, Gansu Province, 730000, China
| | - Yuanyuan Li
- School of Pharmacy, Lanzhou University, Lanzhou, 730000, China
| | - Yan Chen
- School of Pharmacy, Lanzhou University, Lanzhou, 730000, China
| | - Hong Wei
- School of Pharmacy, Lanzhou University, Lanzhou, 730000, China
| | - Xiaohui Mo
- School of Pharmacy, Lanzhou University, Lanzhou, 730000, China
- Codonopsis Radix Industrial Technology Engineering Research Center, Gansu Province, 730000, China
| | - Guolin Chai
- Lanzhou Foci Pharmaceutical Co., Ltd, Lanzhou, Gansu Province, 730000, China
| | - Yongling Du
- School of Pharmacy, Lanzhou University, Lanzhou, 730000, China.
- College of chemistry and chemical engineering, Lanzhou University, Lanzhou, 730000, China.
| | - Fangdi Hu
- School of Pharmacy, Lanzhou University, Lanzhou, 730000, China.
- Codonopsis Radix Industrial Technology Engineering Research Center, Gansu Province, 730000, China.
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000, China.
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Lakavath K, Kafley C, Sajeevan A, Jana S, Marty JL, Kotagiri YG. Progress on Electrochemical Biomimetic Nanosensors for the Detection and Monitoring of Mycotoxins and Pesticides. Toxins (Basel) 2024; 16:244. [PMID: 38922139 PMCID: PMC11209398 DOI: 10.3390/toxins16060244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2024] [Revised: 05/19/2024] [Accepted: 05/20/2024] [Indexed: 06/27/2024] Open
Abstract
Monitoring agricultural toxins such as mycotoxins is crucial for a healthy society. High concentrations of these toxins lead to the cause of several chronic diseases; therefore, developing analytical systems for detecting/monitoring agricultural toxins is essential. These toxins are found in crops such as vegetables, fruits, food, and beverage products. Currently, screening of these toxins is mostly performed with sophisticated instrumentation such as chromatography and spectroscopy techniques. However, these techniques are very expensive and require extensive maintenance, and their availability is limited to metro cities only. Alternatively, electrochemical biomimetic sensing methodologies have progressed hugely during the last decade due to their unique advantages like point-of-care sensing, miniaturized instrumentations, and mobile/personalized monitoring systems. Specifically, affinity-based sensing strategies including immunosensors, aptasensors, and molecular imprinted polymers offer tremendous sensitivity, selectivity, and stability to the sensing system. The current review discusses the principal mechanisms and the recent developments in affinity-based sensing methodologies for the detection and continuous monitoring of mycotoxins and pesticides. The core discussion has mainly focused on the fabrication protocols, advantages, and disadvantages of affinity-based sensing systems and different exploited electrochemical transduction techniques.
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Affiliation(s)
- Kavitha Lakavath
- Department of Chemistry, Indian Institute of Technology Palakkad, Palakkad 678 557, Kerala, India; (K.L.); (C.K.); (A.S.); (S.J.)
| | - Chandan Kafley
- Department of Chemistry, Indian Institute of Technology Palakkad, Palakkad 678 557, Kerala, India; (K.L.); (C.K.); (A.S.); (S.J.)
| | - Anjana Sajeevan
- Department of Chemistry, Indian Institute of Technology Palakkad, Palakkad 678 557, Kerala, India; (K.L.); (C.K.); (A.S.); (S.J.)
| | - Soumyajit Jana
- Department of Chemistry, Indian Institute of Technology Palakkad, Palakkad 678 557, Kerala, India; (K.L.); (C.K.); (A.S.); (S.J.)
| | - Jean Louis Marty
- BAE Laboratory, Université de Perpignan Via Domitia, 52 Avenue Paul Alduy, 66860 Perpignan, France
| | - Yugender Goud Kotagiri
- Department of Chemistry, Indian Institute of Technology Palakkad, Palakkad 678 557, Kerala, India; (K.L.); (C.K.); (A.S.); (S.J.)
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3
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Del Sole R, Stomeo T, Mergola L. Disposable Molecularly Imprinted Polymer-Modified Screen-Printed Electrodes for Rapid Electrochemical Detection of l-Kynurenine in Human Urine. Polymers (Basel) 2023; 16:3. [PMID: 38201667 PMCID: PMC10780426 DOI: 10.3390/polym16010003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 12/13/2023] [Accepted: 12/17/2023] [Indexed: 01/12/2024] Open
Abstract
l-Kynurenine (l-Kyn) is an endogenous metabolite produced in the catabolic route of l-Tryptophan (l-Trp), and it is a potential biomarker of several immunological disorders. Thus, the development of a fast and cheap technology for the specific detection of l-Kyn in biological fluids is of great relevance, especially considering its recent correlation with SARS-CoV-2 disease progression. Herein, a disposable screen-printed electrode based on a molecularly imprinted polymer (MIP) has been constructed: the o-Phenylenediamine monomer, in the presence of l-Kyn as a template with a molar ratio of monomer/template of 1/4, has been electropolymerized on the surface of a screen-printed carbon electrode (SPCE). The optimized kyn-MIP-SPCE has been characterized via cyclic voltammetry (CV), using [Fe(CN)6)]3-/4- as a redox probe and a scanning electron microscopy (SEM) technique. After the optimization of various experimental parameters, such as the number of CV electropolymerization cycles, urine pretreatment, electrochemical measurement method and incubation period, l-Kyn has been detected in standard solutions via square wave voltammetry (SWV) with a linear range between 10 and 100 μM (R2 = 0.9924). The MIP-SPCE device allowed l-Kyn detection in human urine in a linear range of 10-1000 μM (R2 = 0.9902) with LOD and LOQ values of 1.5 and 5 µM, respectively. Finally, a high selectivity factor α (5.1) was calculated for l-Kyn toward l-Trp. Moreover, the Imprinting Factor obtained for l-Kyn was about seventeen times higher than the IF calculated for l-Trp. The developed disposable sensing system demonstrated its potential application in the biomedical field.
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Affiliation(s)
- Roberta Del Sole
- Department of Engineering for Innovation, University of Salento, Via per Monteroni Km 1, 73100 Lecce, Italy;
| | - Tiziana Stomeo
- Center for Bio-Molecular Nanotechnology, Istituto Italiano di Tecnologia, Via Barsanti 14, 73010 Arnesano, Italy;
| | - Lucia Mergola
- Department of Engineering for Innovation, University of Salento, Via per Monteroni Km 1, 73100 Lecce, Italy;
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Kim M, Park D, Park J, Park J. Bio-Inspired Molecularly Imprinted Polymer Electrochemical Sensor for Cortisol Detection Based on O-Phenylenediamine Optimization. Biomimetics (Basel) 2023; 8:282. [PMID: 37504170 PMCID: PMC10377510 DOI: 10.3390/biomimetics8030282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 06/24/2023] [Accepted: 06/28/2023] [Indexed: 07/29/2023] Open
Abstract
This paper presents a comprehensive investigation of the various parameters involved in the fabrication of a molecularly imprinted polymer (MIP) sensor for the detection of cortisol. Parameters such as monomer concentration, electropolymerization cycles, pH, monomer-template ratio, template removal technique, and rebinding time were optimized to establish a more consistent and effective method for the fabrication of MIP sensors. Under the optimized conditions, the MIP sensor demonstrated a proportional decrease in differential pulse voltammetry peak currents with increasing cortisol concentration in the range of 0.1 to 100 nM. The sensor exhibited excellent sensitivity, with a limit of detection of 0.036 nM. Selectivity experiments using a non-imprinted polymer sensor confirmed the specific binding affinity of the MIP sensor for cortisol, distinguishing it from other steroid hormones. This study provides crucial insights into the development of a reliable and sensitive strategy for cortisol detection using O-PD-based MIPs. These findings laid the foundation for further advancements in MIP research.
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Affiliation(s)
- Minwoo Kim
- Department of Biomechatronic Engineering, College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Daeil Park
- Department of Biomechatronic Engineering, College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Joohyung Park
- Department of Biomechatronic Engineering, College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Jinsung Park
- Department of Biomechatronic Engineering, College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
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Pierpaoli M, Szopińska M, Olejnik A, Ryl J, Fudala-Ksiażek S, Łuczkiewicz A, Bogdanowicz R. Engineering boron and nitrogen codoped carbon nanoarchitectures to tailor molecularly imprinted polymers for PFOS determination. JOURNAL OF HAZARDOUS MATERIALS 2023; 458:131873. [PMID: 37379604 DOI: 10.1016/j.jhazmat.2023.131873] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 06/13/2023] [Accepted: 06/14/2023] [Indexed: 06/30/2023]
Abstract
Per- and polyfluoroalkyl substances (PFAS) have gained significant attention as emerging contaminants due to their persistence, abundance, and adverse health effects. Consequently, the urgent need for ubiquitous and effective sensors capable of detecting and quantifying PFAS in complex environmental samples has become a priority. In this study, we present the development of an ultrasensitive molecularly imprinted polymer (MIP) electrochemical sensor tailored by chemically vapour-deposited boron and nitrogen codoped diamond-rich carbon nanoarchitectures for the selective determination of perfluorooctanesulfonic acid (PFOS). This approach allows for a multiscale reduction of MIP heterogeneities, leading to improved selectivity and sensitivity in PFOS detection. Interestingly, the peculiar carbon nanostructures induce a specific distribution of binding sites in the MIPs that exhibit a strong affinity for PFOS. The designed sensors demonstrated a low limit of detection (1.2 μg L-1) and exhibited satisfactory selectivity and stability. To gain further insights into the molecular interactions between diamond-rich carbon surfaces, electropolymerised MIP, and the PFOS analyte, a set of density functional theory (DFT) calculations was performed. Validation of the sensor's performance was carried out by successfully determining PFOS concentrations in real complex samples, such as tap water and treated wastewater, with average recovery rates consistent with UHPLC-MS/MS results. These findings demonstrate the potential of MIP-supported diamond-rich carbon nanoarchitectures for water pollution monitoring, specifically targeting emerging contaminants. The proposed sensor design holds promise for the development of in situ PFOS monitoring devices operating under relevant environmental concentrations and conditions.
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Affiliation(s)
- Mattia Pierpaoli
- Faculty of Electronics, Telecommunication and Informatics, Gdańsk University of Technology, Poland.
| | - Małgorzata Szopińska
- Faculty of Civil and Environmental Engineering, Gdańsk University of Technology, Poland
| | - Adrian Olejnik
- Faculty of Electronics, Telecommunication and Informatics, Gdańsk University of Technology, Poland
| | - Jacek Ryl
- Institute of Nanotechnology and Materials Engineering, Gdańsk University of Technology, Poland
| | - Sylwia Fudala-Ksiażek
- Faculty of Civil and Environmental Engineering, Gdańsk University of Technology, Poland
| | - Aneta Łuczkiewicz
- Faculty of Civil and Environmental Engineering, Gdańsk University of Technology, Poland
| | - Robert Bogdanowicz
- Faculty of Electronics, Telecommunication and Informatics, Gdańsk University of Technology, Poland
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6
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Oliveira AEF, Pereira AC, Ferreira LF. Disposable electropolymerized molecularly imprinted electrochemical sensor for determination of breast cancer biomarker CA 15-3 in human serum samples. Talanta 2023; 252:123819. [DOI: 10.1016/j.talanta.2022.123819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 08/02/2022] [Accepted: 08/03/2022] [Indexed: 10/15/2022]
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Yulianti ES, Rahman SF, Whulanza Y. Molecularly Imprinted Polymer-Based Sensor for Electrochemical Detection of Cortisol. BIOSENSORS 2022; 12:1090. [PMID: 36551057 PMCID: PMC9776045 DOI: 10.3390/bios12121090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 11/16/2022] [Accepted: 11/23/2022] [Indexed: 06/17/2023]
Abstract
As a steroid hormone, cortisol has a close relationship with the stress response, and therefore, can be used as a biomarker for early detection of stress. An electrochemical immunosensor is one of the most widely used methods to detect cortisol, with antibodies as its bioreceptor. Apart from conventional laboratory-based methods, the trend for cortisol detection has seemed to be exploiting antibodies and aptamers. Both can provide satisfactory performance with high selectivity and sensitivity, but they still face issues with their short shelf life. Molecularly imprinted polymers (MIPs) have been widely used to detect macro- and micro-molecules by forming artificial antibodies as bioreceptors. MIPs are an alternative to natural antibodies, which despite demonstrating high selectivity and a low degree of cross-reactivity, often also show a high sensitivity to the environment, leading to their denaturation. MIPs can be prepared with convenient and relatively affordable fabrication processes. They also have high durability in ambient conditions, a long shelf life, and the ability to detect cortisol molecules at a concentration as low as 2 ag/mL. By collecting data from the past five years, this review summarizes the antibody and aptamer-based amperometric sensors as well as the latest developments exploiting MIPs rather than antibodies. Lastly, factors that can improve MIPs performance and are expected to be developed in the future are also explained.
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Affiliation(s)
- Elly Septia Yulianti
- Department of Electrical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus UI Depok, Depok 16424, West Java, Indonesia
| | - Siti Fauziyah Rahman
- Department of Electrical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus UI Depok, Depok 16424, West Java, Indonesia
- Research Center for Biomedical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus UI Depok, Depok 16424, West Java, Indonesia
| | - Yudan Whulanza
- Research Center for Biomedical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus UI Depok, Depok 16424, West Java, Indonesia
- Department of Mechanical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus UI Depok, Depok 16424, West Java, Indonesia
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8
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Modern and Dedicated Methods for Producing Molecularly Imprinted Polymer Layers in Sensing Applications. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12063080] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Molecular imprinting (MI) is the most available and known method to produce artificial recognition sites, similar to antibodies, inside or at the surface of a polymeric material. For this reason, scholars all over the world have found MI appealing, thus developing, in this past period, various types of molecularly imprinted polymers (MIPs) that can be applied to a wide range of applications, including catalysis, separation sciences and monitoring/diagnostic devices for chemicals, biochemicals and pharmaceuticals. For instance, the advantages brought by the use of MIPs in the sensing and analytics field refer to higher selectivity, sensitivity and low detection limits, but also to higher chemical and thermal stability as well as reusability. In light of recent literature findings, this review presents both modern and dedicated methods applied to produce MIP layers that can be integrated with existent detection systems. In this respect, the following MI methods to produce sensing layers are presented and discussed: surface polymerization, electropolymerization, sol–gel derived techniques, phase inversionand deposition of electroactive pastes/inks that include MIP particles.
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9
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Abo-Elmagd I, Mahmoud AM, Al-Ghobashy MA, Nebsen M, El Sayed NS, Nofal S, Soror SH, Todd R, Elgebaly SA. Impedimetric Sensors for Cyclocreatine Phosphate Determination in Plasma Based on Electropolymerized Poly( o-phenylenediamine) Molecularly Imprinted Polymers. ACS OMEGA 2021; 6:31282-31291. [PMID: 34841172 PMCID: PMC8613875 DOI: 10.1021/acsomega.1c05098] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 10/27/2021] [Indexed: 06/13/2023]
Abstract
Cyclocreatine and its water-soluble derivative, cyclocreatine phosphate (CCrP), are potent cardioprotective drugs. Based on recent animal studies, CCrP, FDA-awarded Orphan Drug Designation, has a promising role in increasing the success rate of patients undergoing heart transplantation surgery by preserving donor hearts during transportation and improving the recovery of transplanted hearts in recipient patients. In addition, CCrP is under investigation as a promising treatment for creatine transporter deficiency, an X-linked inborn error resulting in a poor quality of life for both the patients and the caregiver. A newly designed molecularly imprinted polymer (MIP) material was fabricated by the anodic electropolymerization of o-phenylenediamine on screen-printed carbon electrodes and was successfully applied as an impedimetric sensor for CCrP determination to dramatically reduce the analysis time during both the clinical trial phases and drug development process. To enhance the overall performance of the proposed sensor, studies were performed to optimize the electropolymerization conditions, incubation time, and pH of the background electrolyte. Scanning electron microscopy, electrochemical impedance spectroscopy, and cyclic voltammetry were used to characterize the behavior of the developed ultrathin MIP membrane. The CCrP-imprinted polymer has a high recognition affinity for the template molecule because of the formation of 3D complementary cavities within the polymer. The developed MIP impedimetric sensor had good linearity, repeatability, reproducibility, and stability within the linear concentration range of 1 × 10-9 to 1 × 10-7 mol/L, with a low limit of detection down to 2.47 × 10-10 mol/L. To verify the applicability of the proposed sensor, it was used to quantify CCrP in spiked plasma samples.
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Affiliation(s)
- Ibrahim
F. Abo-Elmagd
- Bioanalysis
Research Group, School of Pharmacy, Newgiza
University, Giza 12256, Egypt
| | - Amr M. Mahmoud
- Analytical
Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt
| | - Medhat A. Al-Ghobashy
- Bioanalysis
Research Group, School of Pharmacy, Newgiza
University, Giza 12256, Egypt
- Analytical
Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt
- Central
Administration for Drug Control, Egyptian
Drug Authority (EDA), Cairo 12654, Egypt
| | - Marianne Nebsen
- Analytical
Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt
| | - Nesrine S. El Sayed
- Department
of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt
| | - Shahira Nofal
- Department
of Pharmacology and Toxicology, Faculty of Pharmacy, Helwan University, Ain Helwan, Helwan, Cairo 11795, Egypt
| | - Sameh H. Soror
- Department
of Biochemistry and Molecular Biology, Faculty of Pharmacy, Helwan University, Ain Helwan, Helwan, Cairo 11795, Egypt
- Center
for Scientific Excellence, Helwan Structural Biology Research (HSBR),
Faculty of Pharmacy, Helwan University, Ain Helwan, Helwan, Cairo 11795, Egypt
| | - Robert Todd
- ProChem
International, LLC, Sheboygan, Wisconsin 53085-3325, United States
| | - Salwa A. Elgebaly
- Nour
Heart, Inc., Vienna, Virginia 22180, United
States
- Faculty
of Medicine, University of Connecticut, Farmington, Connecticut 06030, United States
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10
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Kadhem AJ, Gentile GJ, Fidalgo de Cortalezzi MM. Molecularly Imprinted Polymers (MIPs) in Sensors for Environmental and Biomedical Applications: A Review. Molecules 2021; 26:6233. [PMID: 34684813 PMCID: PMC8540986 DOI: 10.3390/molecules26206233] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 10/06/2021] [Accepted: 10/12/2021] [Indexed: 01/30/2023] Open
Abstract
Molecular imprinted polymers are custom made materials with specific recognition sites for a target molecule. Their specificity and the variety of materials and physical shapes in which they can be fabricated make them ideal components for sensing platforms. Despite their excellent properties, MIP-based sensors have rarely left the academic laboratory environment. This work presents a comprehensive review of recent reports in the environmental and biomedical fields, with a focus on electrochemical and optical signaling mechanisms. The discussion aims to identify knowledge gaps that hinder the translation of MIP-based technology from research laboratories to commercialization.
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Affiliation(s)
- Abbas J. Kadhem
- Department of Civil and Environmental Engineering, University of Missouri, E2509 Lafferre Hall, Columbia, MO 65211, USA;
| | - Guillermina J. Gentile
- Department of Chemical Engineering, Instituto Tecnológico de Buenos Aires, Lavardén 315, Buenos Aires C1437FBG, Argentina;
| | - Maria M. Fidalgo de Cortalezzi
- Department of Civil and Environmental Engineering, University of Missouri, E2509 Lafferre Hall, Columbia, MO 65211, USA;
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Nicholls IA, Golker K, Olsson GD, Suriyanarayanan S, Wiklander JG. The Use of Computational Methods for the Development of Molecularly Imprinted Polymers. Polymers (Basel) 2021; 13:2841. [PMID: 34502881 PMCID: PMC8434026 DOI: 10.3390/polym13172841] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 08/16/2021] [Accepted: 08/19/2021] [Indexed: 12/29/2022] Open
Abstract
Recent years have witnessed a dramatic increase in the use of theoretical and computational approaches in the study and development of molecular imprinting systems. These tools are being used to either improve understanding of the mechanisms underlying the function of molecular imprinting systems or for the design of new systems. Here, we present an overview of the literature describing the application of theoretical and computational techniques to the different stages of the molecular imprinting process (pre-polymerization mixture, polymerization process and ligand-molecularly imprinted polymer rebinding), along with an analysis of trends within and the current status of this aspect of the molecular imprinting field.
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Affiliation(s)
- Ian A. Nicholls
- Bioorganic & Biophysical Chemistry Laboratory, Linnaeus University Centre for Biomaterials Chemistry, Department of Chemistry & Biomedical Sciences, Linnaeus University, SE-391 82 Kalmar, Sweden; (K.G.); (G.D.O.); (S.S.); (J.G.W.)
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12
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Couto RAS, Coelho C, Mounssef B, Morais SFDA, Lima CD, dos Santos WTP, Carvalho F, Rodrigues CMP, Braga AAC, Gonçalves LM, Quinaz MB. 3,4-Methylenedioxypyrovalerone (MDPV) Sensing Based on Electropolymerized Molecularly Imprinted Polymers on Silver Nanoparticles and Carboxylated Multi-Walled Carbon Nanotubes. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:353. [PMID: 33535439 PMCID: PMC7912732 DOI: 10.3390/nano11020353] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 01/23/2021] [Accepted: 01/25/2021] [Indexed: 01/20/2023]
Abstract
3,4-methylenedioxypyrovalerone (MDPV) is a harmful and controlled synthetic cathinone used as a psychostimulant drug and as sport-enhancing substance. A sensor was developed for the direct analysis of MDPV by transducing its oxidation signal by means of an electropolymerized molecularly imprinted polymer (e-MIP) built in-situ on the screen-printed carbon electrode's (SPCE) surface previously covered with multi-walled carbon nanotubes (MWCNTs) and silver nanoparticles (AgNPs). Benzene-1,2-diamine was used as the functional monomer while the analyte was used as the template monomer. Each step of the sensor's development was studied by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) in a solution containing ferricyanide, however no redox probe was required for the actual MDPV measurements. The interaction between the poly(o-phenylenediamine) imprinted polymer and MDPV was studied by density-functional theory (DFT) methods. The SPCE-MWCNT-AgNP-MIP sensor responded adequately to the variation of MDPV concentration. It was shown that AgNPs enhanced the electrochemical signal by around a 3-fold factor. Making use of square-wave voltammetry (SWV) the developed sensor provided a limit of detection (LOD) of 1.8 μmol L-1. The analytical performance of the proposed sensor paves the way to the development of a portable device for MDPV on-site sensing to be applied in forensic and doping analysis.
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Affiliation(s)
- Rosa A. S. Couto
- REQUIMTE, LAQV, Laboratory of Applied Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, 4050-213 Porto, Portugal; (R.A.S.C.); (C.C.)
| | - Constantino Coelho
- REQUIMTE, LAQV, Laboratory of Applied Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, 4050-213 Porto, Portugal; (R.A.S.C.); (C.C.)
| | - Bassim Mounssef
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo (USP), São Paulo, SP 05508-000, Brazil; (B.M.J.); (S.F.d.A.M.); (A.A.C.B.)
| | - Sara F. de A. Morais
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo (USP), São Paulo, SP 05508-000, Brazil; (B.M.J.); (S.F.d.A.M.); (A.A.C.B.)
| | - Camila D. Lima
- Departamento de Química, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG 39100-000, Brazil;
| | - Wallans T. P. dos Santos
- Departamento de Farmácia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG 39100-000, Brazil;
| | - Félix Carvalho
- REQUIMTE, UCIBIO, Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, 4050-213 Porto, Portugal;
| | - Cecília M. P. Rodrigues
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, 1649-003 Lisbon, Portugal;
| | - Ataualpa A. C. Braga
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo (USP), São Paulo, SP 05508-000, Brazil; (B.M.J.); (S.F.d.A.M.); (A.A.C.B.)
| | - Luís Moreira Gonçalves
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo (USP), São Paulo, SP 05508-000, Brazil; (B.M.J.); (S.F.d.A.M.); (A.A.C.B.)
| | - M. Beatriz Quinaz
- REQUIMTE, LAQV, Laboratory of Applied Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, 4050-213 Porto, Portugal; (R.A.S.C.); (C.C.)
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13
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Grothe RA, Lobato A, Mounssef B, Tasić N, Braga AAC, Maldaner AO, Aldous L, Paixão TRLC, Gonçalves LM. Electroanalytical profiling of cocaine samples by means of an electropolymerized molecularly imprinted polymer using benzocaine as the template molecule. Analyst 2021; 146:1747-1759. [DOI: 10.1039/d0an02274h] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Cocaine samples were ‘finger-printed’ using e-MIPs, constructed on the surface of portable SPCEs. The SWV data with suitable chemometric analysis provides valuable information about the drugs’ provenience which is crucial to tackle drug traffic.
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Affiliation(s)
- Renata A. Grothe
- Departamento de Química Fundamental
- Instituto de Química
- Universidade de São Paulo (USP)
- São Paulo – SP
- Brazil
| | - Alnilan Lobato
- Departamento de Química Fundamental
- Instituto de Química
- Universidade de São Paulo (USP)
- São Paulo – SP
- Brazil
| | - Bassim Mounssef
- Departamento de Química Fundamental
- Instituto de Química
- Universidade de São Paulo (USP)
- São Paulo – SP
- Brazil
| | - Nikola Tasić
- Departamento de Química Fundamental
- Instituto de Química
- Universidade de São Paulo (USP)
- São Paulo – SP
- Brazil
| | - Ataualpa A. C. Braga
- Departamento de Química Fundamental
- Instituto de Química
- Universidade de São Paulo (USP)
- São Paulo – SP
- Brazil
| | - Adriano O. Maldaner
- Instituto Nacional de Criminalística
- Polícia Federal Brasileira (PFB)
- Asa Sul, Brasília – DF
- Brazil
| | - Leigh Aldous
- Department of Chemistry
- King's College of London
- London
- UK
| | - Thiago R. L. C. Paixão
- Departamento de Química Fundamental
- Instituto de Química
- Universidade de São Paulo (USP)
- São Paulo – SP
- Brazil
| | - Luís Moreira Gonçalves
- Departamento de Química Fundamental
- Instituto de Química
- Universidade de São Paulo (USP)
- São Paulo – SP
- Brazil
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14
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Combining capillary electromigration with molecular imprinting techniques towards an optimal separation and determination. Talanta 2021; 221:121546. [DOI: 10.1016/j.talanta.2020.121546] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 08/19/2020] [Accepted: 08/20/2020] [Indexed: 01/24/2023]
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15
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Bozal-Palabiyik B, Erkmen C, Uslu B. Molecularly Imprinted Electrochemical Sensors: Analytical and Pharmaceutical Applications Based on Ortho-Phenylenediamine Polymerization. CURR PHARM ANAL 2020. [DOI: 10.2174/1573412915666190304150159] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
The molecular imprinting technique has been applied in many fields including
separation, artificial antibody mimics, catalysis, sensing studies, and drug delivery. The reasons for the
popularity of this technique among the researchers are high selectivity due to the cavities that are
formed on the polymer surface for the specific analyte, high robustness, high durability under extreme
conditions and low cost. When these advantages are combined with the advantages of electrochemical
methods such as rapid response time, ease of use, cheapness and miniaturizability, Molecularly Imprinted
Polymer (MIP) based electrochemical sensors turn out to be a widely-preferred sensing tool.
Objective:
This article provides the reader with information on MIP-based electrochemical sensors and
reviews the applications of the MIP sensors prepared by electropolymerization of orthophenylenediamine,
a monomer whose mechanical and chemical stability is very high.
Results and Conclusion:
The literature survey summarized in this review shows that cyclic voltammetry
is the most widely preferred electrochemical technique for electropolymerization of o-PD. The media
chosen is generally acetate or phosphate buffers with different pH values. Although there are numerous
solvents used for template removal, generally methanol and NaOH have been chosen.
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Affiliation(s)
- Burcin Bozal-Palabiyik
- Department of Analytical Chemistry, Faculty of Pharmacy, Ankara University, 06560 Yenimahalle, Ankara, Turkey
| | - Cem Erkmen
- Department of Analytical Chemistry, Faculty of Pharmacy, Ankara University, 06560 Yenimahalle, Ankara, Turkey
| | - Bengi Uslu
- Department of Analytical Chemistry, Faculty of Pharmacy, Ankara University, 06560 Yenimahalle, Ankara, Turkey
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16
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Couto RA, Costa SS, Mounssef B, Pacheco JG, Fernandes E, Carvalho F, Rodrigues CM, Delerue-Matos C, Braga AA, Moreira Gonçalves L, Quinaz MB. Electrochemical sensing of ecstasy with electropolymerized molecularly imprinted poly(o-phenylenediamine) polymer on the surface of disposable screen-printed carbon electrodes. SENSORS AND ACTUATORS B: CHEMICAL 2019; 290:378-386. [DOI: 10.1016/j.snb.2019.03.138] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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17
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Sun C, Liu M, Sun H, Lu H, Zhao G. Immobilization-free photoelectrochemical aptasensor for environmental pollutants: Design, fabrication and mechanism. Biosens Bioelectron 2019; 140:111352. [PMID: 31163397 DOI: 10.1016/j.bios.2019.111352] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 05/16/2019] [Accepted: 05/24/2019] [Indexed: 01/21/2023]
Abstract
Atrazine (ATZ) is one of the most widely used and highly toxic triazine herbicides in the world. Photoelectrochemical (PEC) method is an attractive and sensitive alternate for ATZ. However, for conventional PEC sensors, recognition elements usually need to immobilize on electrode surface, where a complex procedure is unavoidable and the reproducibility of sensors fabrication is usually poor. Therefore, we herein proposed a new and feasible strategy for developing a signal-on immobilization-free PEC aptasensor to ATZ. Aptamer for ATZ is combined with graphene to obtain APT-GN complex, serving as the recognition element in solution. TiO2 nanotubes (NTs) electrode deposited with Au nanoparticles (NPs) is used as the substrate electrode. After further self-assembled with 1-Mercaptooctane (MCT), the photo-generated carriers transfer between the resultant electrode and the electrolyte will be blocked, leading to a signal-off of the photocurrent. But when sensing ATZ, aptamers on APT-GN will be grasped by ATZ, leaving free graphene to assemble onto MCT/Au NPs/TiO2 NTs, which will largely "turn on" the photocurrent response of the substrate electrode due to the efficient carrier transport efficiency of graphene. Meanwhile, simultaneous addition of deoxyribonuclease I (DNase I) can bring about further cycling amplification of the signal enhancement. The as-designed PEC aptasensor exhibits a linear range from 50.0 fM to 0.3 nM with detection limit of 12.0 fM for ATZ. Since the reaction of recognition elements and targets ATZ occurs in homogeneous solution rather than on the photoelectrode surface, this PEC aptasensor exhibits advantages of high stability, anti-interference ability, reproducibility, and wide pH and ion strength feasibility range. A promising immobilization-free aptasensing platform has thus been provided not only for ATZ but also for other kinds of environmental pollutants.
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Affiliation(s)
- Caiqin Sun
- School of Chemical Science and Engineering, Shanghai Key Lab of Chemical Assessment and Sustainability, Tongji University, 1239 Siping Road, Shanghai, 200092, China
| | - Meichuan Liu
- School of Chemical Science and Engineering, Shanghai Key Lab of Chemical Assessment and Sustainability, Tongji University, 1239 Siping Road, Shanghai, 200092, China.
| | - Huanhuan Sun
- School of Chemical Science and Engineering, Shanghai Key Lab of Chemical Assessment and Sustainability, Tongji University, 1239 Siping Road, Shanghai, 200092, China
| | - Hanxing Lu
- School of Chemical Science and Engineering, Shanghai Key Lab of Chemical Assessment and Sustainability, Tongji University, 1239 Siping Road, Shanghai, 200092, China
| | - Guohua Zhao
- School of Chemical Science and Engineering, Shanghai Key Lab of Chemical Assessment and Sustainability, Tongji University, 1239 Siping Road, Shanghai, 200092, China.
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18
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Crapnell RD, Hudson A, Foster CW, Eersels K, Grinsven BV, Cleij TJ, Banks CE, Peeters M. Recent Advances in Electrosynthesized Molecularly Imprinted Polymer Sensing Platforms for Bioanalyte Detection. SENSORS (BASEL, SWITZERLAND) 2019; 19:E1204. [PMID: 30857285 PMCID: PMC6427210 DOI: 10.3390/s19051204] [Citation(s) in RCA: 101] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 03/04/2019] [Accepted: 03/05/2019] [Indexed: 01/06/2023]
Abstract
The accurate detection of biological materials has remained at the forefront of scientific research for decades. This includes the detection of molecules, proteins, and bacteria. Biomimetic sensors look to replicate the sensitive and selective mechanisms that are found in biological systems and incorporate these properties into functional sensing platforms. Molecularly imprinted polymers (MIPs) are synthetic receptors that can form high affinity binding sites complementary to the specific analyte of interest. They utilise the shape, size, and functionality to produce sensitive and selective recognition of target analytes. One route of synthesizing MIPs is through electropolymerization, utilising predominantly constant potential methods or cyclic voltammetry. This methodology allows for the formation of a polymer directly onto the surface of a transducer. The thickness, morphology, and topography of the films can be manipulated specifically for each template. Recently, numerous reviews have been published in the production and sensing applications of MIPs; however, there are few reports on the use of electrosynthesized MIPs (eMIPs). The number of publications and citations utilising eMIPs is increasing each year, with a review produced on the topic in 2012. This review will primarily focus on advancements from 2012 in the use of eMIPs in sensing platforms for the detection of biologically relevant materials, including the development of increased polymer layer dimensions for whole bacteria detection and the use of mixed monomer compositions to increase selectivity toward analytes.
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Affiliation(s)
- Robert D Crapnell
- Faculty of Science & Engineering, Div. of Chemistry & Environmental Science, Manchester Metropolitan University, John Dalton Building, Chester Street, Manchester M1 5GD, UK.
| | - Alexander Hudson
- Faculty of Science & Engineering, Div. of Chemistry & Environmental Science, Manchester Metropolitan University, John Dalton Building, Chester Street, Manchester M1 5GD, UK.
| | - Christopher W Foster
- Faculty of Science & Engineering, Div. of Chemistry & Environmental Science, Manchester Metropolitan University, John Dalton Building, Chester Street, Manchester M1 5GD, UK.
| | - Kasper Eersels
- Sensor Engineering, Faculty of Science and Engineering, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands.
| | - Bart van Grinsven
- Sensor Engineering, Faculty of Science and Engineering, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands.
| | - Thomas J Cleij
- Sensor Engineering, Faculty of Science and Engineering, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands.
| | - Craig E Banks
- Faculty of Science & Engineering, Div. of Chemistry & Environmental Science, Manchester Metropolitan University, John Dalton Building, Chester Street, Manchester M1 5GD, UK.
| | - Marloes Peeters
- Faculty of Science & Engineering, Div. of Chemistry & Environmental Science, Manchester Metropolitan University, John Dalton Building, Chester Street, Manchester M1 5GD, UK.
- School of Engineering, Newcastle University, Newcastle Upon Tyne NE1 7RU, UK.
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19
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Nsibande SA, Forbes PBC. Development of a quantum dot molecularly imprinted polymer sensor for fluorescence detection of atrazine. LUMINESCENCE 2019; 34:480-488. [PMID: 30834666 DOI: 10.1002/bio.3620] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 01/28/2019] [Accepted: 01/30/2019] [Indexed: 01/10/2023]
Abstract
Atrazine is a common agricultural pesticide which has been reported to occur widely in surface drinking water, making it an environmental pollutant of concern. In the quest for developing sensitive detection methods for pesticides, the use of quantum dots (QDs) as sensitive fluorescence probes has gained momentum in recent years. QDs have attractive and unique optical properties whilst coupling of QDs to molecularly imprinted polymers (MIPs) has been shown to offer excellent selectivity. Thus, the development of QD@MIPs based fluorescence sensors could provide an alternative for monitoring herbicides like atrazine in water. In this work, highly fluorescent CdSeTe/ZnS QDs were fabricated using the conventional organometallic synthesis approach and were then encapsulated with MIPs. The CdSeTe/ZnS@MIP sensor was characterized and applied for selective detection of atrazine. The sensor showed a fast response time (5 min) upon interaction with atrazine and the fluorescence intensity was linearly quenched within the 2-20 mol L-1 atrazine range. The detection limit of 0.80 × 10-7 mol L-1 is comparable to reported environmental levels. Lastly, the sensor was applied in real water samples and showed satisfactory recoveries (92-118%) in spiked samples, hence it is a promising candidate for use in water monitoring.
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Affiliation(s)
- Sifiso A Nsibande
- Department of Chemistry, Faculty of Natural & Agricultural Sciences, University of Pretoria,, Pretoria, South Africa
| | - Patricia B C Forbes
- Department of Chemistry, Faculty of Natural & Agricultural Sciences, University of Pretoria,, Pretoria, South Africa
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20
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Electrochemical impedance sensor for herbicide alachlor based on imprinted polymer receptor. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2018.02.036] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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21
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Wei MH, Wang S, Jiang WY, Chen HY, Wang Y, Meng T. Preparation and Characterization of Dual-Template Molecularly Imprinted Membrane with High Flux Based on Blending the Inorganic Nanoparticles. J Inorg Organomet Polym Mater 2017. [DOI: 10.1007/s10904-017-0716-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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22
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Yola ML, Atar N. Electrochemical Detection of Atrazine by Platinum Nanoparticles/Carbon Nitride Nanotubes with Molecularly Imprinted Polymer. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b01379] [Citation(s) in RCA: 99] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mehmet Lütfi Yola
- Iskenderun Technical University, Faculty of Engineering
and Natural Sciences, Department of Biomedical Engineering, Hatay, Turkey
| | - Necip Atar
- Pamukkale University, Faculty of Engineering, Department
of Chemical Engineering, Denizli, Turkey
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23
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Karim K, Cowen T, Guerreiro A, Piletska E, Whitcombe MJ. A Protocol for the Computational Design of High Affi nity Molecularly Imprinted Polymer Synthetic Receptors. ACTA ACUST UNITED AC 2017. [DOI: 10.17352/gjbbs.000009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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24
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Yılmaz E, Özgür E, Bereli N, Türkmen D, Denizli A. Plastic antibody based surface plasmon resonance nanosensors for selective atrazine detection. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 73:603-610. [PMID: 28183651 DOI: 10.1016/j.msec.2016.12.090] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Revised: 12/06/2016] [Accepted: 12/19/2016] [Indexed: 12/25/2022]
Abstract
This study reports a surface plasmon resonance (SPR) based affinity sensor system with the use of molecular imprinted nanoparticles (plastic antibodies) to enhance the pesticide detection. Molecular imprinting based affinity sensor is prepared by the attachment of atrazine (chosen as model pesticide) imprinted nanoparticles onto the gold surface of SPR chip. Recognition element of the affinity sensor is polymerizable form of aspartic acid. The imprinted nanoparticles were characterized via FTIR and zeta-sizer measurements. SPR sensors are characterized with atomic force microscopy (AFM), scanning electron microscopy (SEM), Fourier transform infrared spectrophotometry (FTIR) and contact angle measurements. The imprinted nanoparticles showed more sensitivity to atrazine than the non-imprinted ones. Different concentrations of atrazine solutions are applied to SPR system to determine the adsorption kinetics. Langmuir adsorption model is found as the most suitable model for this affinity nanosensor system. In order to show the selectivity of the atrazine-imprinted nanoparticles, competitive adsorption of atrazine, simazine and amitrole is investigated. The results showed that the imprinted nanosensor has high selectivity and sensitivity for atrazine.
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Affiliation(s)
- Erkut Yılmaz
- Department of Chemistry, Aksaray University, 68100 Aksaray, Turkey
| | - Erdoğan Özgür
- Department of Chemistry, Hacettepe University, 06800 Ankara, Turkey
| | - Nilay Bereli
- Department of Chemistry, Hacettepe University, 06800 Ankara, Turkey
| | - Deniz Türkmen
- Department of Chemistry, Hacettepe University, 06800 Ankara, Turkey
| | - Adil Denizli
- Department of Chemistry, Hacettepe University, 06800 Ankara, Turkey.
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Cowen T, Karim K, Piletsky S. Computational approaches in the design of synthetic receptors – A review. Anal Chim Acta 2016; 936:62-74. [DOI: 10.1016/j.aca.2016.07.027] [Citation(s) in RCA: 89] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Revised: 07/13/2016] [Accepted: 07/15/2016] [Indexed: 01/02/2023]
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26
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Zhang J, Li F, Wang XH, Xu D, Huang YP, Liu ZS. Preparation and characterization of dual-template molecularly imprinted monolith with metal ion as pivot. Eur Polym J 2016. [DOI: 10.1016/j.eurpolymj.2016.05.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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27
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Yang JC, Park JY. Polymeric Colloidal Nanostructures Fabricated via Highly Controlled Convective Assembly and Their Use for Molecular Imprinting. ACS APPLIED MATERIALS & INTERFACES 2016; 8:7381-7389. [PMID: 26938141 DOI: 10.1021/acsami.6b00375] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In this work, the formation of various polystyrene (PS) colloidal structures on striped PS patterns is demonstrated based on a simple and novel convective assembly method that controls the electrostatic interactions between the PS colloidal particles and sodium dodecyl sulfate (SDS). Under the optimal conditions (different withdrawal speeds, channel dimensions, suspension concentrations, etc.), highly ordered structures such as highly close-packed, zigzag, and linear colloidal aggregates are observed. In addition, these colloidal arrangements are used for development of molecularly imprinted polymer (MIP) sensors with highly improved sensing properties. Using PDMS replicas, three hemispherical poly(methacrylic acid-ethylene glycol dimethacrylate) (poly(MAA-EGDMA)) MIP films, including planar MIP and non-imprinted polymer (NIP) films, are photopolymerized for detection of trace atrazine in an aqueous solution. From gravimetric quartz crystal microbalance (QCM) measurements, a non-close-packed MIP film exhibits highest sensing response (Δf = 932 Hz) to atrazine detection among hemispherical MIP films and shows 6.5-fold higher sensing response than the planar MIP film. In addition, the sensitivity of the MIP sensor is equivalent to -119 Hz/(mol L(-1)). From the ratio of slopes of the calibration curves for the hemispherical MIP and NIP films, the imprinting factor (If) is as high as 11.0. The hemispherical MIP film also shows excellent selectivity in comparison with the sensing responses of other analogous herbicides. As a result, this molecular surface imprinting using PS colloidal arrays is highly efficient for herbicide detection.
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Affiliation(s)
- Jin Chul Yang
- Department of Polymer Science and Engineering, Kyungpook National University , 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea
| | - Jin Young Park
- Department of Polymer Science and Engineering, Kyungpook National University , 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea
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