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Leau SA, Lete C, Matei C, Lupu S. Electrochemical Sensing Platform Based on Metal Nanoparticles for Epinephrine and Serotonin. BIOSENSORS 2023; 13:781. [PMID: 37622867 PMCID: PMC10452149 DOI: 10.3390/bios13080781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/27/2023] [Accepted: 07/29/2023] [Indexed: 08/26/2023]
Abstract
A sensing platform based on nanocomposite materials composed of gold metal nanoparticles (AuNPs) and conducting polymer (CP) matrix has been developed for serotonin and epinephrine detection. The CP-AuNPs nanocomposite materials have been synthesized onto glassy carbon electrodes (GCE) by using novel electrochemical procedures based on sinusoidal currents (SC). The SC procedures ensured good control of the metal nanoparticles distribution, increased electrochemical surface area, and enhanced analytical performance. The proposed sensing platform displayed good analytical performance toward serotonin and epinephrine detection. A wide linear analytical response toward epinephrine in the range from 10 to 640 μM and a low detection limit of 1.4 μM epinephrine has been obtained. The sensing platform has also displayed a linear response toward serotonin in the range from 10 to 320 μM, with a detection limit of 5.7 μM serotonin. The sensing platform has been successfully applied in the analysis of epinephrine and serotonin in real samples of tap water and urine with good accuracy.
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Affiliation(s)
- Sorina Alexandra Leau
- Department of Electrochemistry and Corrosion, Institute of Physical Chemistry “Ilie Murgulescu” of the Romanian Academy, 202 Splaiul Independentei, 060021 Bucharest, Romania
- Department of Analytical Chemistry and Environmental Engineering, Faculty of Chemical Engineering and Biotechnologies, University “Politehnica” of Bucharest, 1-7 Polizu Gheorghe, 060042 Bucharest, Romania
| | - Cecilia Lete
- Department of Electrochemistry and Corrosion, Institute of Physical Chemistry “Ilie Murgulescu” of the Romanian Academy, 202 Splaiul Independentei, 060021 Bucharest, Romania
| | - Cristian Matei
- Department of Inorganic, Physical Chemistry and Electrochemistry, Faculty of Chemical Engineering and Biotechnologies, University “Politehnica” of Bucharest, 1-7 Polizu Gheorghe, 060042 Bucharest, Romania
| | - Stelian Lupu
- Department of Analytical Chemistry and Environmental Engineering, Faculty of Chemical Engineering and Biotechnologies, University “Politehnica” of Bucharest, 1-7 Polizu Gheorghe, 060042 Bucharest, Romania
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García-Guzmán JJ, López-Iglesias D, Cubillana-Aguilera L, Bellido-Milla D, Palacios-Santander JM, Marin M, Grigorescu SD, Lete C, Lupu S. Silver nanostructures - poly(3,4-ethylenedioxythiophene) sensing material prepared by sinusoidal voltage procedure for detection of antioxidants. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.139082] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Abstract
Conductive polymers are nowadays attracting great attention for their peculiar mechanical, electrical and optical proprieties. In particular, PEDOT can be used in a wide range of innovative applications, from electroluminescent devices to photovoltaics. In this work, the electrochemical deposition of 3,4 ethylenedioxythiophene (EDOT) was performed on various substrates (ITO, thin films of gold and palladium on silicon wafers) by means of both potentiostatic and potentiodynamic techniques. This was intended to further expand the applications of electrochemically deposited PEDOT, particularly regarding the preparation of thin films in tight contact with electrode surfaces. This allows one to obtain systems prone to be used as electrodes in stacked devices. Chronoamperometric experiments were performed to study the nucleation and growth process of PEDOT. SEM, ESEM and AFM analysis allowed the characterization of the morphology of the polymeric films obtained. Raman and visible spectroscopy confirmed the high-quality of the coatings on the different substrates. Then, the PEDOT films were used as the base material for the further electrodeposition of a copper layer. In this way, a hybrid electronic device was obtained, by using electrochemical methods only. The high conductivity and ohmic behavior of the device were confirmed over a wide range of frequencies with electrical impedance spectroscopy analysis.
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Electrochemical Sensing of Caffeic Acid Using Gold Nanoparticles Embedded in Poly(3,4-ethylenedioxythiophene) Layer by Sinusoidal Voltage Procedure. CHEMOSENSORS 2019. [DOI: 10.3390/chemosensors7040065] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The increasing demand for sensitive electrochemical sensors in various medical and industrial applications promotes the fabrication of novel sensing materials with improved electrocatalytic and analytical performances. This work deals with the development of a composite material based on gold nanoparticles (AuNPs) embedded in poly(3,4-ethylenedioxythiophene) (PEDOT) layer for electrochemical determination of caffeic acid (CA). CA is a phenolic compound with excellent antioxidant properties that is present in vegetables, fruits, and alcoholic and non-alcoholic beverages. Its analytical quantification is of great interest in food production monitoring and healthcare applications. Therefore, the development of sensitive analytical devices for CA monitoring is required. The AuNPs have been prepared in situ onto PEDOT coated glassy carbon electrode (GC) by means of an innovative procedure consisting on the use of a sinusoidal voltage (SV) superimposed on a constant potential. The physico-chemical properties of the PEDOT-AuNPs composite material were investigated by a range of techniques including cyclic voltammetry, electrochemical quartz crystal microbalance, and scanning electron microscopy. The glassy carbon electrode/poly(3,4-ethylenedioxythiophene)-gold nanoparticles-sinusoidal voltage (GC/PEDOT-AuNPs-SV) sensor exhibited good analytical performance toward the CA quantification with a linear response over a wide concentration range from 10 µM to 1 mM. In addition, the proposed GC/PEDOT-AuNPs-SV sensor was successfully applied in the determination of total polyphenols content expressed as equivalents of CA in juice samples.
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Poly(3,4-ethylenedioxythiophene)-modified electrodes for tryptophan voltammetric sensing. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.113309] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Superhydrophobic and fluorescent properties of fluorinated polypyrene surfaces using various polar linkers prepared via electropolymerization. REACT FUNCT POLYM 2019. [DOI: 10.1016/j.reactfunctpolym.2018.12.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Hu XY, Ouyang J, Liu GC, Gao MJ, Song LB, Zang J, Chen W. Synthesis and Characterization of the Conducting Polymer Micro-Helix Based on the Spirulina Template. Polymers (Basel) 2018; 10:E882. [PMID: 30960807 PMCID: PMC6404013 DOI: 10.3390/polym10080882] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 08/02/2018] [Accepted: 08/05/2018] [Indexed: 11/16/2022] Open
Abstract
As one of the most interesting naturally-occurring geometries, micro-helical structures have attracted attention due to their potential applications in fabricating biomedical and microelectronic devices. Conventional processing techniques for manufacturing micro-helices are likely to be limited in cost and mass-productivity, while Spirulina, which shows natural fine micro-helical forms, can be easily mass-reproduced at an extremely low cost. Furthermore, considering the extensive utility of conducting polymers, it is intriguing to synthesize conducting polymer micro-helices. In this study, PPy (polypyrrole), PANI (polyaniline), and PEDOT (poly(3,4-ethylenedioxythiophene)) micro-helices were fabricated using Spirulinaplatensis as a bio-template. The successful formations of the conducting polymer micro-helix were confirmed using scanning electron microscopy (SEM). Fourier transform infrared spectroscopy (FTIR) and Raman and X-ray diffraction (XRD) were employed to characterize the molecular structures of the conducting polymer in micro-helical forms. In the electrochemical characterization, the optimized specific capacitances for the PPy micro-helix, the PANI micro-helix, and the PEDOT micro-helix were found to be 234 F/g, 238 F/g at the scan rate of 5 mV/s, and 106.4 F/g at the scan rate of 10 mV/s, respectively. Therefore, it could be expected that other conducting polymer micro-helices with Spirulina as a bio-template could be also easily synthesized for various applications.
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Affiliation(s)
- Xiao-Yu Hu
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China.
- Hubei Boffin Technology Co. Ltd., Wuhan 430074, China.
| | - Jun Ouyang
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Guo-Chang Liu
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Meng-Juan Gao
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Lai-Bo Song
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Jianfeng Zang
- Innovation Institute, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Wei Chen
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China.
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Lupu S, Lete C, Javier del Campo F. Dopamine Electroanalysis Using Electrochemical Biosensors Prepared by a Sinusoidal Voltages Method. ELECTROANAL 2015. [DOI: 10.1002/elan.201400680] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Tomčík P. Microelectrode arrays with overlapped diffusion layers as electroanalytical detectors: theory and basic applications. SENSORS (BASEL, SWITZERLAND) 2013; 13:13659-84. [PMID: 24152927 PMCID: PMC3859085 DOI: 10.3390/s131013659] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Revised: 08/14/2013] [Accepted: 08/28/2013] [Indexed: 12/16/2022]
Abstract
This contribution contains a survey of basic literature dealing with arrays of microelectrodes with overlapping diffusion layers as prospective tools in contemporary electrochemistry. Photolithographic thin layer technology allows the fabrication of sensors of micrometric dimensions separated with a very small gap. This fact allows the diffusion layers of single microelectrodes to overlap as members of the array. Various basic types of microelectrode arrays with interacting diffusion layers are described and their analytical abilities are accented. Theoretical approaches to diffusion layer overlapping and the consequences of close constitution effects such as collection efficiency and redox cycling are discussed. Examples of basis applications in electroanalytical chemistry such as amperometric detectors in HPLC and substitutional stripping voltammetry are also given.
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Affiliation(s)
- Peter Tomčík
- Department of Chemistry & Physics, Faculty of Education, Catholic University in Ružomberok, Hrabovská cesta 1, SK-034 01, Ružomberok, Slovak Republic.
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Lupu S, Lete C, Balaure PC, Caval DI, Mihailciuc C, Lakard B, Hihn JY, del Campo FJ. Development of amperometric biosensors based on nanostructured tyrosinase-conducting polymer composite electrodes. SENSORS 2013; 13:6759-74. [PMID: 23698270 PMCID: PMC3690080 DOI: 10.3390/s130506759] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Revised: 04/25/2013] [Accepted: 04/28/2013] [Indexed: 11/16/2022]
Abstract
Bio-composite coatings consisting of poly(3,4-ethylenedioxythiophene) (PEDOT) and tyrosinase (Ty) were successfully electrodeposited on conventional size gold (Au) disk electrodes and microelectrode arrays using sinusoidal voltages. Electrochemical polymerization of the corresponding monomer was carried out in the presence of various Ty amounts in aqueous buffered solutions. The bio-composite coatings prepared using sinusoidal voltages and potentiostatic electrodeposition methods were compared in terms of morphology, electrochemical properties, and biocatalytic activity towards various analytes. The amperometric biosensors were tested in dopamine (DA) and catechol (CT) electroanalysis in aqueous buffered solutions. The analytical performance of the developed biosensors was investigated in terms of linear response range, detection limit, sensitivity, and repeatability. A semi-quantitative multi-analyte procedure for simultaneous determination of DA and CT was developed. The amperometric biosensor prepared using sinusoidal voltages showed much better analytical performance. The Au disk biosensor obtained by 50 mV alternating voltage amplitude displayed a linear response for DA concentrations ranging from 10 to 300 μM, with a detection limit of 4.18 μM.
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Affiliation(s)
- Stelian Lupu
- Department of Analytical Chemistry and Environmental Engineering, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, Polizu Gheorghe 1-5, Bucharest 011061, Romania; E-Mail:
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +40-741-984-028; Fax: +40-213-111-796
| | - Cecilia Lete
- Laboratory of Electrochemistry, Institute of Physical Chemistry “Ilie Murgulescu” of the Romanian Academy, Splaiul Independentei 202, Bucharest 060021, Romania; E-Mail:
| | - Paul Cătălin Balaure
- Department of Organic Chemistry, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, Polizu Gheorghe 1-5, Bucharest 011061, Romania; E-Mail:
| | - Dan Ion Caval
- Department of Analytical Chemistry and Environmental Engineering, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, Polizu Gheorghe 1-5, Bucharest 011061, Romania; E-Mail:
| | - Constantin Mihailciuc
- Department of Physical Chemistry, Faculty of Chemistry, University of Bucharest, Bld. Regina Elisabeta 4-12, Bucharest 030018, Romania; E-Mail:
| | - Boris Lakard
- Institut UTINAM, CNRS-UMR 6213, Université de Franche-Comté, 16 route de Gray, Besançon Cedex 25030, France; E-Mails: (B.L.); (J.-Y.H.)
| | - Jean-Yves Hihn
- Institut UTINAM, CNRS-UMR 6213, Université de Franche-Comté, 16 route de Gray, Besançon Cedex 25030, France; E-Mails: (B.L.); (J.-Y.H.)
| | - Francisco Javier del Campo
- Instituto de Microelectrónica de Barcelona, IMB-CNM (CSIC), Campus Universidad Autónoma de Barcelona, Bellaterra 08193, Barcelona, Spain; E-Mail:
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