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Nguyen VBC, Reut J, Rappich J, Hinrichs K, Syritski V. Molecularly Imprinted Polymer-Based Electrochemical Sensor for the Detection of Azoxystrobin in Aqueous Media. Polymers (Basel) 2024; 16:1394. [PMID: 38794587 PMCID: PMC11125202 DOI: 10.3390/polym16101394] [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: 03/29/2024] [Revised: 05/02/2024] [Accepted: 05/09/2024] [Indexed: 05/26/2024] Open
Abstract
This work presents an electrochemical sensor detecting a fungicide-azoxystrobin (AZO) in aqueous environments. This AZO sensor utilizes a thin-film metal electrode (TFME) combined with an AZO-selective molecularly imprinted polymer (AZO-MIP). The AZO-MIP was directly generated on TFME through electrochemical polymerization from the solution containing two functional monomers: aniline (Ani) and m-phenylenediamine (mPD), and the template: AZO, which was afterwards removed to form AZO-selective cavities in the polymer matrix. The AZO-MIP preparation was characterized by electrochemical and ellipsometry measurements. Optimization of the synthesis parameters, including the charge density applied during electrodeposition, the monomer-to-template ratio, was performed to enhance the sensor's performance. The results demonstrated that the AZO sensor achieved a low limit of detection (LOD) of 3.6 nM and a limit of quantification (LOQ) of 11.8 nM in tap water, indicating its sensitivity in a complex aqueous environment. The sensor also exhibited satisfactory selectivity for AZO in both ultrapure and tap-water samples and achieved a good recovery (94-119%) for the target analyte. This study highlights the potential of MIP-based electrochemical sensors for the rapid and accurate detection of fungicide contaminants in water, contributing to the advancement of analytical tools for water-quality monitoring and risk assessment.
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Affiliation(s)
- Vu Bao Chau Nguyen
- Department of Materials and Environmental Technology, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia; (V.B.C.N.)
| | - Jekaterina Reut
- Department of Materials and Environmental Technology, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia; (V.B.C.N.)
| | - Jörg Rappich
- Young Investigator Group Nanoscale Solid-Liquid Interfaces, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Schwarzschildstr. 8, 12489 Berlin, Germany;
| | - Karsten Hinrichs
- Application Laboratories Berlin, Leibniz-Institut für Analytische Wissenschaften-ISAS-e.V., Schwarzschildstraße 8, 12489 Berlin, Germany;
| | - Vitali Syritski
- Department of Materials and Environmental Technology, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia; (V.B.C.N.)
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Saikrithika S, Kumar AS. A selective voltammetric pH sensor using graphitized mesoporous carbon/polyaniline hybrid system. J CHEM SCI 2021. [DOI: 10.1007/s12039-021-01908-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Vishnu N, Sharma CS, Senthil Kumar A. A low-cost and miniaturized electrochemical cell for low-sample analyses. Microchem J 2020. [DOI: 10.1016/j.microc.2020.105591] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Electrochemical polymerization of para-chloroaniline as highly redox-active poly(para-chloroaniline) on graphitized mesoporous carbon surface. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136376] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Nisha S, Lakshminarayanan V, Senthil Kumar A. Electrochemical Reaction Assisted 2D π-Stacking of Benzene on a MWCNT Surface and its Unique Redox and Electrocatalytic Properties. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:9-19. [PMID: 31825230 DOI: 10.1021/acs.langmuir.9b01970] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Turning the π-structure and electronic properties of carbon nanotubes (CNTs) is a cutting-edge research topic in interdisciplinary areas of material chemistry. In general, chemical functionalization of CNT has been adopted for this purpose, which has resulted in a few monolayer thickness increment of CNT diameter size. Herein, we report an interesting observation of >10-fold increment in the apparent diameter of multiwalled carbon nanotubes (MWCNTs) brought about by a process of self-assembly of the BZ moiety on MWCNT, which is formed by electrochemical oxidation of a surface-adsorbed benzene-water cluster, {BZ-nH2O}. From physicochemical characterizations by transmission electron microscopy (TEM) and Raman and IR spectroscopic techniques and electrochemical characterizations by several radical scavenger species, it has been revealed that benzene radical moieties as a series of π-stacked layers ([BZ]-π-stack) were self-assembled on the MWCNT surface. A possible mechanism for their formation was proposed to be electrochemical oxidation of H2O from the MWCNT@{BZ-nH2O}ads layer to oxygen gas via hydroxyl radical formation and benzene cationic radical species at 1.2 V vs Ag/AgCl followed by its self-assembly into a unique MWCNT@[BZ]-π-stack network. The scanning electrochemical microscopic (SECM) technique was used to identify the in situ •OH radical formation. The electrochemical studies of a glassy-carbon-modified MWCNT@[BZ]-π-stack system showed a well-defined and highly symmetrical redox peak at an equilibrium potential E1/2 = 0.2 V vs Ag/AgCl (pH 2 HCl/KCl), with a peak-to-peak potential separation of 0 V, highlighting the ideal-surface-confined electron-transfer nature of the redox couple. Furthermore, enhanced electrical conductivity over the unmodified MWCNT was observed when testing the surface-sensitive redox couple Fe3+/Fe2+ with the modified electrode. This new redox material showed a specific electrocatalytic reduction of hydrogen peroxide at neutral pH (pH 7 phosphate buffer solution) unlike the quinone and other organic redox mediators, which show the reduction signal only in the presence of horseradish peroxidase enzyme.
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Affiliation(s)
| | - V Lakshminarayanan
- Soft and Condensed Matter , Raman Research Institute , C. V. Raman Avenue, Sadashivanagar , Bengaluru 560 080 , India
| | - Annamalai Senthil Kumar
- Soft and Condensed Matter , Raman Research Institute , C. V. Raman Avenue, Sadashivanagar , Bengaluru 560 080 , India
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The selective electrochemical detection of dopamine in the presence of ascorbic acid and uric acid using electro-polymerised-β-cyclodextrin incorporated f-MWCNTs/polyaniline modified glassy carbon electrode. Microchem J 2019. [DOI: 10.1016/j.microc.2019.04.081] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Thiruppathi M, Lin PY, Chou YT, Ho HY, Wu LC, Ho JAA. Simple aminophenol-based electrochemical probes for non-enzymatic, dual amperometric detection of NADH and hydrogen peroxide. Talanta 2019; 200:450-457. [PMID: 31036208 DOI: 10.1016/j.talanta.2019.03.083] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 03/21/2019] [Accepted: 03/21/2019] [Indexed: 11/30/2022]
Abstract
Non enzymatic detection of NADH and H2O2 is of practical significance for both environmental and biological prospective. However, there is no simple, straight forward electrochemical sensor available for sensing of them in real samples. Addressing this challenge, we report a simple stimuli responsive aminophenol, pre-anodized screen printed carbon electrode (SPCE*/AP) based electrochemical probes for dual detection of NADH and H2O2. Aminophenol prepared and adsorbed on the electrode from aminophenylboronic acid via boronic acid deprotection with H2O2. The SPCE*/AP fabricated with this process was characterized by cyclic voltammetry (CV), scanning electron microscope (SEM), Raman spectroscopy, UV-visible spectroscopy, and X-ray photoelectron spectroscopy (XPS). Amperometric detection results showed that SPCE*/AP electrodes exhibited linearity from 50 µM to 500 µM and from 200 µM to 2 mM with a detection limit (S/N = 3) of 4.2 µM and 28.9 µM for NADH and H2O2, respectively. Excellent reproducibility and selectivity for NADH and H2O2 were observed for this electrochemical platform. In addition, the matrix effect was investigated further using the same technique to analyze NADH and H2O2 in human urine samples, human serum samples, cell culture medium (containing 10% fetal bovine serum, FBS), and environmental water samples (tap water and rain water). Also, the present sensor demonstrated promising outcomes with living cells (normal cells and cancer cells).
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Affiliation(s)
- Murugan Thiruppathi
- Bioanalytical Chemistry and Nanobiomedicine Laboratory, Department of Biochemical Science and Technology, National Taiwan University, Taipei 10617, Taiwan
| | - Pei-Ying Lin
- Bioanalytical Chemistry and Nanobiomedicine Laboratory, Department of Biochemical Science and Technology, National Taiwan University, Taipei 10617, Taiwan
| | - Yi-Te Chou
- Bioanalytical Chemistry and Nanobiomedicine Laboratory, Department of Biochemical Science and Technology, National Taiwan University, Taipei 10617, Taiwan
| | - Hsin-Yu Ho
- Department of Applied Chemistry, National Chi Nan University, Puli, Nantou 54561, Taiwan
| | - Li-Chen Wu
- Department of Applied Chemistry, National Chi Nan University, Puli, Nantou 54561, Taiwan
| | - Ja-An Annie Ho
- Bioanalytical Chemistry and Nanobiomedicine Laboratory, Department of Biochemical Science and Technology, National Taiwan University, Taipei 10617, Taiwan; Center for Biotechnology, National Taiwan University, Taipei 10617, Taiwan.
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Gopalakrishnan A, Sha R, Vishnu N, Kumar R, Badhulika S. Disposable, efficient and highly selective electrochemical sensor based on Cadmium oxide nanoparticles decorated screen-printed carbon electrode for ascorbic acid determination in fruit juices. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/j.nanoso.2018.05.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Rębiś T, Sobczak A, Wierzchowski M, Frankiewicz A, Teżyk A, Milczarek G. An approach for electrochemical functionalization of carbon nanotubes/1-amino-9,10-anthraquinone electrode with catechol derivatives for the development of NADH sensors. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2017.12.022] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Amreen K, Kumar AS. Bio-electrocatalytic reduction of dissolved oxygen by whole blood chemically modified electrode and its application. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2017.12.047] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Nellaiappan S, Kumar AS. Reductive cleavage of methyl orange under formation of a redox-active hydroquinone/polyaniline nanocomposite on an electrode modified with MWCNTs, and its application to flow injection analysis of ascorbic acid at low potential and neutral pH value. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2339-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Mayuri P, Kumar AS. Unexpected Electrochemical Transformation of Aminobenzene Sulfonic Acid Isomers to Respective Surface-Confined-Redox Active Quinones Bypassing Polyaniline on a MWCNT Surface. ChemElectroChem 2017. [DOI: 10.1002/celc.201600622] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Pinapeddavari Mayuri
- Nano and Bioelectrochemistry Research Laboratory; Department of Chemistry; School of Advanced Sciences; Vellore Institute of Technology University; Vellore- 632 014 India
| | - Annamalai Senthil Kumar
- Nano and Bioelectrochemistry Research Laboratory; Department of Chemistry; School of Advanced Sciences; Vellore Institute of Technology University; Vellore- 632 014 India
- Carbon dioxide Research and Green Technology Centre; Vellore Institute of Technology University; Vellore- 632 014 India
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Amreen K, Kumar AS. Electrochemical redox signaling of hemoglobin in human whole blood and its relevance to anemia and thalassemia diagnosis. Analyst 2017; 141:2145-9. [PMID: 26922940 DOI: 10.1039/c5an02646f] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
A highly redox active human whole blood-carbon nanomaterial modified electrode has been developed, which showed a redox peak (vs. Ag/AgCl) similar to that of hemoglobin (vs. Ag/AgCl) in red blood cells. Clinical relevance of this for direct electrochemical analysis of blood hemoglobin content (anemia) and thalassemia disease diagnosis was demonstrated.
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Affiliation(s)
- Khairunnisa Amreen
- Environmental and Analytical Chemistry Division, School of Advanced Sciences, Vellore Institute of Technology University, Vellore-632 014, India.
| | - Annamalai Senthil Kumar
- Environmental and Analytical Chemistry Division, School of Advanced Sciences, Vellore Institute of Technology University, Vellore-632 014, India.
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Vishnu N, Kumar AS. Intrinsic Iron-Containing Multiwalled Carbon Nanotubes as Electro-Fenton Catalyst for the Conversion of Benzene to Redox-Active Surface-Confined Quinones. ChemElectroChem 2016. [DOI: 10.1002/celc.201600052] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Nandimalla Vishnu
- Environmental and Analytical Chemistry Division; School of Advanced Sciences; Vellore Institute of Technology University; Vellore 632014 India
| | - Annamalai Senthil Kumar
- Environmental and Analytical Chemistry Division; School of Advanced Sciences; Vellore Institute of Technology University; Vellore 632014 India
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Sundaram S, Jagannathan M, Abdul Kadir MR, Palanivel S, Hadibarata T, Mohammed Yusoff AR. A new electro-generated o-dianisidine derivative stabilized MWCNT-modified GCE for low potential gallic acid detection. RSC Adv 2015. [DOI: 10.1039/c5ra06304c] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An enone derivative of a o-dianisidine dimer stabilized GCE/MWCNT exhibited low potential gallic acid detection at 0.16 V vs. Ag/AgCl.
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Affiliation(s)
- Sornambikai Sundaram
- Medical Devices & Technology Group
- Faculty of Biosciences & Medical Engineering
- Universiti Teknologi Malaysia
- Malaysia
| | - Madhanagopal Jagannathan
- Medical Devices & Technology Group
- Faculty of Biosciences & Medical Engineering
- Universiti Teknologi Malaysia
- Malaysia
| | - Mohammed Rafiq Abdul Kadir
- Medical Devices & Technology Group
- Faculty of Biosciences & Medical Engineering
- Universiti Teknologi Malaysia
- Malaysia
| | - Sathishkumar Palanivel
- Centre for Sustainable Environment and Water Security (IPASA)
- Research Institute for Sustainable Environment
- Universiti Teknologi Malaysia
- Malaysia
| | - Tony Hadibarata
- Centre for Sustainable Environment and Water Security (IPASA)
- Research Institute for Sustainable Environment
- Universiti Teknologi Malaysia
- Malaysia
| | - Abdul Rahim Mohammed Yusoff
- Centre for Sustainable Environment and Water Security (IPASA)
- Research Institute for Sustainable Environment
- Universiti Teknologi Malaysia
- Malaysia
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