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Zhao J, Ding J, Luan F, Qin W. Chronopotentiometric sensors for antimicrobial peptide-based biosensing of Staphylococcus aureus. Mikrochim Acta 2024; 191:356. [PMID: 38811412 DOI: 10.1007/s00604-024-06410-4] [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: 01/04/2024] [Accepted: 05/04/2024] [Indexed: 05/31/2024]
Abstract
Charged antimicrobial peptides can be used for direct potentiometric biosensing, but have never been explored. We report here a galvanostatically-controlled potentiometric sensor for antimicrobial peptide-based biosensing. Solid-state pulsed galvanostatic sensors that showed excellent stability under continuous galvanostatic polarization were prepared by utilizing reduced graphene oxide/poly (3,4-ethylenedioxythiophene): poly (4-styrenesulfonate) (rGO/PEDOT: PSS) as a solid contact. More importantly, the chronopotentiometric sensor can be made sensitive to antimicrobial peptides with intrinsic charge on demand via a current pulse. In this study, a positively charged antimicrobial peptide that can bind to Staphylococcus aureus with high affinity and good selectivity was designed as a model. Two arginine residues with positive charges were linked to the C-terminal of the peptide sequence to increase its potentiometric responses on the electrode. The bacteria binding-induced charge or charge density change of the antimicrobial peptide enables the direct chronopotentiometric detection of the target. Under the optimized conditions, the concentration of Staphylococcus aureus can be determined in the linear range 10-1.0 × 105 CFU mL-1 with a detection limit of 10 CFU mL-1. It is anticipated that such a chronopotentiometric sensing platform is readily adaptable to detect other bacteria by choosing the peptides.
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Affiliation(s)
- Jiarong Zhao
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264003, People's Republic of China
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Shandong Key Laboratory of Coastal Environmental Processes, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), YICCAS, Yantai, 264003, Shandong, People's Republic of China
| | - Jiawang Ding
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Shandong Key Laboratory of Coastal Environmental Processes, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), YICCAS, Yantai, 264003, Shandong, People's Republic of China.
| | - Feng Luan
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264003, People's Republic of China
| | - Wei Qin
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Shandong Key Laboratory of Coastal Environmental Processes, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), YICCAS, Yantai, 264003, Shandong, People's Republic of China
- Laboratory for Marine Biology and Biotechnology, Qingdao Marine Science and Technology Center, Qingdao, 266237, Shandong, People's Republic of China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, 266071, Shandong, People's Republic of China
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2
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Saha A, Mi Y, Glassmaker N, Shakouri A, Alam MA. In Situ Drift Monitoring and Calibration of Field-Deployed Potentiometric Sensors Using Temperature Supervision. ACS Sens 2023; 8:2799-2808. [PMID: 37350462 DOI: 10.1021/acssensors.3c00735] [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] [Indexed: 06/24/2023]
Abstract
Potentiometric ion-selective electrodes (ISEs) have broad applications in personalized healthcare, smart agriculture, oil/gas exploration, and environmental monitoring. However, high-precision potentiometric sensing is difficult with field-deployed sensors due to time-dependent voltage drift and the need for frequent calibration. In the laboratory setting, these issues are resolved by repeated calibration by measuring the voltage response at multiple standard solutions at a constant temperature. For field-deployed sensors, it is difficult to frequently interrupt operation and recalibrate with standard solutions. Moreover, the constant surrounding temperature constraint imposed by the traditional calibration process makes it unsuitable for temperature-varying field use. To address the challenges of traditional calibration for field-deployed sensors, in this study, we propose a novel in situ calibration approach in which we use natural/external temperature variation in the field to obtain the time-varying calibration parameters, without having to relocate the sensors or use any complex system. We also develop a temperature-supervised monitoring method to detect the drift of the sensor during operation. Collectively, the temperature-based drift monitoring and in situ calibration methods allow us to monitor the drift of sensors and correct them periodically to achieve high-precision sensing. We demonstrate our approach in three testbeds: (1) under controlled temperature variation in the lab, (2) under natural temperature variation in a greenhouse, and (3) in the field to monitor nitrate activity of an agricultural site. In the laboratory study, we validate that the calibration parameters of printed nitrate ISEs can be reproduced by our proposed calibration process; therefore, it can serve as an alternative to traditional calibration processes. In the greenhouse, we show the use of natural temperature variation to calibrate the sensors and detect the drift in a fixed concentration nitrate solution. Finally, we demonstrate the use of the method to monitor the nitrate activity of an agricultural field within 10% of laboratory-based measurements (i.e., a sensitivity of 0.03 mM) for a period of 22 days. The findings highlight the prospect of temperature-based calibration and drift monitoring for high-precision sensing with field-deployed ISEs.
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Affiliation(s)
- Ajanta Saha
- School of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Ye Mi
- Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, United States
| | - Nicholas Glassmaker
- Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, United States
| | - Ali Shakouri
- School of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Muhammad A Alam
- School of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana 47907, United States
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3
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Wardak C, Pietrzak K, Morawska K, Grabarczyk M. Ion-Selective Electrodes with Solid Contact Based on Composite Materials: A Review. SENSORS (BASEL, SWITZERLAND) 2023; 23:5839. [PMID: 37447689 DOI: 10.3390/s23135839] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 06/14/2023] [Accepted: 06/21/2023] [Indexed: 07/15/2023]
Abstract
Potentiometric sensors are the largest and most commonly used group of electrochemical sensors. Among them, ion-selective electrodes hold a prominent place. Since the end of the last century, their re-development has been observed, which is a consequence of the introduction of solid contact constructions, i.e., electrodes without an internal electrolyte solution. Research carried out in the field of potentiometric sensors primarily focuses on developing new variants of solid contact in order to obtain devices with better analytical parameters, and at the same time cheaper and easier to use, which has been made possible thanks to the achievements of material engineering. This paper presents an overview of new materials used as a solid contact in ion-selective electrodes over the past several years. These are primarily composite and hybrid materials that are a combination of carbon nanomaterials and polymers, as well as those obtained from carbon and polymer nanomaterials in combination with others, such as metal nanoparticles, metal oxides, ionic liquids and many others. Composite materials often have better mechanical, thermal, electrical, optical and chemical properties than the original components. With regard to their use in the construction of ion-selective electrodes, it is particularly important to increase the capacitance and surface area of the material, which makes them more effective in the process of charge transfer between the polymer membrane and the substrate material. This allows to obtain sensors with better analytical and operational parameters. Brief characteristics of electrodes with solid contact, their advantages and disadvantages, as well as research methods used to assess their parameters and analytical usefulness were presented. The work was divided into chapters according to the type of composite material, while the data in the table were arranged according to the type of ion. Selected basic analytical parameters of the obtained electrodes have been collected and summarized in order to better illustrate and compare the achievements that have been described till now in this field of analytical chemistry, which is potentiometry. This comprehensive review is a compendium of knowledge in the research area of functional composite materials and state-of-the-art SC-ISE construction technologies.
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Affiliation(s)
- Cecylia Wardak
- Department of Analytical Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University, Maria Curie-Sklodowska Square. 3, 20-031 Lublin, Poland
| | - Karolina Pietrzak
- Department of Food and Nutrition, Medical University of Lublin, 4a Chodzki Str., 20-093 Lublin, Poland
| | - Klaudia Morawska
- Department of Analytical Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University, Maria Curie-Sklodowska Square. 3, 20-031 Lublin, Poland
| | - Malgorzata Grabarczyk
- Department of Analytical Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University, Maria Curie-Sklodowska Square. 3, 20-031 Lublin, Poland
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Kozma J, Papp S, Gyurcsányi RE. Highly hydrophobic TEMPO-functionalized conducting copolymers for solid-contact ion-selective electrodes. Bioelectrochemistry 2023; 150:108352. [PMID: 36563456 DOI: 10.1016/j.bioelechem.2022.108352] [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: 06/28/2022] [Revised: 12/09/2022] [Accepted: 12/10/2022] [Indexed: 12/23/2022]
Abstract
Solid-contact ion-selective electrodes (SCISEs) emerged as the best electrode embodiment for miniaturized, wearable and disposable sensors for ion/electrolyte measurements in body fluids. The commercialization of inexpensive single-use "calibration-free" electrodes requires large scale manufacturing of electrodes with reproducible calibration parameters, e.g. E0. This is perhaps the most important shortcoming of SCISEs, beside the many advantages over their conventional liquid-contact counterparts. However, adjusting the E0 value for optimal potential stability is challenging for all state-of-the-art solid-contact materials, which may combine several types of transducing mechanism (e.g. capacitive and redox materials or their combination) for enhanced potential stability and analytical performance. Therefore, here we introduce for the first time the galvanostatic intermittent titration technique (GITT) to determine the best preadjusment potential. The proof of concept is shown for a novel type of solid-contact based on the copolymerization of 3,4-ethylenedioxythiophene with perfluorinated alkyl side chain (EDOTF) and (2,2,6,6-Tetramethylpiperidin-1-yl)oxyl modified 3,4-ethylenedioxythiophene (EDOT-TEMPO). Such materials that are compliant with local electrodeposition and provide multiple functionalities, i.e. high hydrophobicity by the perfluorinated alkyl side chain, electron-to-ion transduction by the conducting polymer (EDOT) backbone and the confinement of well-defined redox couple (TEMPO), are expected to prevail as solid-contacts.
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Affiliation(s)
- József Kozma
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Műegyetem rkp. 3, H-1111 Budapest, Hungary; MTA-BME Lendület Chemical Nanosensors Research Group, Műegyetem rkp. 3, H-1111 Budapest, Hungary
| | - Soma Papp
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Műegyetem rkp. 3, H-1111 Budapest, Hungary; MTA-BME Lendület Chemical Nanosensors Research Group, Műegyetem rkp. 3, H-1111 Budapest, Hungary
| | - Róbert E Gyurcsányi
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Műegyetem rkp. 3, H-1111 Budapest, Hungary; MTA-BME Lendület Chemical Nanosensors Research Group, Műegyetem rkp. 3, H-1111 Budapest, Hungary; MTA-BME Computation Driven Chemistry Research Group, Műegyetem rkp. 3, H-1111 Budapest, Hungary.
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5
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Zhang Y, Tang Y, Liang R, Zhong L, Xu J, Lu H, Xu X, Han T, Bao Y, Ma Y, Gan S, Niu L. Carbon-Based Transducers for Solid-Contact Calcium Ion-Selective Electrodes: Mesopore and Nitrogen-Doping Effects. MEMBRANES 2022; 12:903. [PMID: 36135922 PMCID: PMC9505166 DOI: 10.3390/membranes12090903] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Revised: 09/07/2022] [Accepted: 09/13/2022] [Indexed: 06/16/2023]
Abstract
Solid-contact ion-selective electrodes (SC-ISEs) exhibit great potential in the detection of routine and portable ions which rely on solid-contact (SC) materials for the transduction of ions to electron signals. Carbon-based materials are state-of-the-art SC transducers due to their high electrical double-layer (EDL) capacitance and hydrophobicity. However, researchers have long searched for ways to enhance the interfacial capacitance in order to improve the potential stability. Herein, three representative carbon-based SC materials including nitrogen-doped mesoporous carbon (NMC), reduced graphene oxide (RGO), and carbon nanotubes (CNT) were compared. The results disclose that the NMC has the highest EDL capacitance owing to its mesopore structure and N-doping while maintaining high hydrophobicity so that no obvious water-layer effect was observed. The Ca2+-SC-ISEs based on the SC of NMC exhibited high potential stability compared with RGO and CNT. This work offers a guideline for the development of carbon-material-based SC-ISEs through mesoporous and N-doping engineering to improve the interfacial capacitance. The developed NMC-based solid-contact Ca2+-SC-ISE exhibited a Nernstian slope of 26.3 ± 3.1 mV dec-1 ranging from 10 μM to 0.1 M with a detection limit of 3.2 μM. Finally, a practical application using NMC-based SC-ISEs was demonstrated through Ca2+ ion analysis in mineral water and soil leaching solutions.
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Affiliation(s)
| | | | | | - Lijie Zhong
- Correspondence: Correspondence: (L.Z.); (L.N.)
| | | | | | | | | | | | | | | | - Li Niu
- Correspondence: Correspondence: (L.Z.); (L.N.)
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6
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Abstract
Conducting polymers (CPs) are highly conjugated organic macromolecules, where the electrical charge is transported in intra- and inter-chain pathways. Polyacetylene, polythiophene and its derivatives, polypyrrole and its derivatives, and polyaniline are among the best-known examples. These compounds have been used as electrode modifiers to gain sensitivity and selectivity in a large variety of analytical applications. This review, after a brief introduction to the electrochemistry of CPs, summarizes the application of CPs’ electrode interfaces towards heavy metals’ detection using potentiometry, pulse anodic stripping voltammetry, and alternative non-classical electrochemical methods.
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7
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Bahro C, Goswami S, Gernhart S, Koley D. Calibration-free Solid-State Ion-Selective Electrode Based on a Polarized PEDOT/PEDOT-S-Doped Copolymer as Back Contact. Anal Chem 2022; 94:8302-8308. [DOI: 10.1021/acs.analchem.2c00748] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Christopher Bahro
- Department of Chemistry, Oregon State University, Corvallis 97330, Oregon, United States
| | - Subir Goswami
- Department of Chemistry, Oregon State University, Corvallis 97330, Oregon, United States
| | - Sarah Gernhart
- Department of Chemistry, Oregon State University, Corvallis 97330, Oregon, United States
| | - Dipankar Koley
- Department of Chemistry, Oregon State University, Corvallis 97330, Oregon, United States
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8
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Kozma J, Papp S, Gyurcsányi RE. TEMPO-Functionalized Carbon Nanotubes for Solid-Contact Ion-Selective Electrodes with Largely Improved Potential Reproducibility and Stability. Anal Chem 2022; 94:8249-8257. [PMID: 35622612 PMCID: PMC9201804 DOI: 10.1021/acs.analchem.2c00395] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Solid-contact ion-selective electrodes (SCISEs) can overcome essential limitations of their counterparts based on liquid contacts. However, attaining a highly reproducible and predictable E0, especially between different fabrication batches, turned out to be difficult even with the most established solid-contact materials, i.e., conducting polymers and large-surface-area conducting materials (e.g., carbon nanotubes), that otherwise possess excellent potential stability. An appropriate batch-to-batch E0 reproducibility of SCISEs besides aiding the rapid quality control of the electrode manufacturing process is at the core of their "calibration-free" application, which is perhaps the last major challenge for their routine use as single-use "disposable" or wearable potentiometric sensors. Therefore, here, we propose a new class of solid-contact material based on the covalent functionalization of multiwalled carbon nanotubes (MWCNTs) with a chemically stable redox molecule, (2,2,6,6-tetramethylpiperidin-1-yl)oxyl (TEMPO). This material combines the advantages of (i) the large double-layer capacitance of MWCNT layers, (ii) the adjustable redox couple ratio provided by the TEMPO moiety, (iii) the covalent confinement of the redox couple, and (iv) the hydrophobicity of the components to achieve the potential reproducibility and stability for demanding applications. The TEMPO-MWCNT-based SC potassium ion-selective electrodes (K+-SCISEs) showed excellent analytical performance and potential stability with no sign of an aqueous layer formation beneath the ion-selective membrane nor sensitivity toward O2, CO2, and light. A major convenience of the fabrication procedure is the E0 adjustment of the K+-SCISEs by the polarization of the TEMPO-MWCNT suspension prior to its use as solid contact. While most E0 reproducibility studies are limited to a single fabrication batch of SCISEs, the use of prepolarized TEMPO-MWCNT resulted also in an outstanding batch-to-batch potential reproducibility. We were also able to overcome the hydration-related potential drifts for the use of SCISEs without prior conditioning and to feature application for accurate K+ measurements in undiluted blood serum.
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Affiliation(s)
- József Kozma
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Műegyetem rkp. 3, H-1111 Budapest, Hungary.,MTA-BME Lendület Chemical Nanosensors Research Group, Műegyetem rkp. 3, H-1111 Budapest, Hungary
| | - Soma Papp
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Műegyetem rkp. 3, H-1111 Budapest, Hungary.,MTA-BME Lendület Chemical Nanosensors Research Group, Műegyetem rkp. 3, H-1111 Budapest, Hungary
| | - Róbert E Gyurcsányi
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Műegyetem rkp. 3, H-1111 Budapest, Hungary.,MTA-BME Lendület Chemical Nanosensors Research Group, Műegyetem rkp. 3, H-1111 Budapest, Hungary.,MTA-BME Computation Driven Chemistry Research Group, Műegyetem rkp. 3, H-1111 Budapest, Hungary
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Li Y, Cui B, Zhang S, Li B, Li J, Liu S, Zhao Q. Ion-Selective Organic Electrochemical Transistors: Recent Progress and Challenges. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2107413. [PMID: 35182018 DOI: 10.1002/smll.202107413] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 01/20/2022] [Indexed: 06/14/2023]
Abstract
The charged species inside biofluids (blood, interstitial fluid, sweat, saliva, urine, etc.) can reflect the human body's physiological conditions and thus be adopted to diagnose various diseases early. Among all personalized health management applications, ion-selective organic electrochemical transistors (IS-OECTs) have shown tremendous potential in point-of-care testing of biofluids due to low cost, ease of fabrication, high signal amplification, and low detection limit. Moreover, IS-OECTs exhibit excellent flexibility and biocompatibility that enable their application in wearable bioelectronics for continuous health monitoring. In this review, the working principle of IS-OECTs and the recent studies of IS-OECTs for performance improvement are reviewed. Specifically, contemporary studies on material design and device optimization to enhance the sensitivity of IS-OECTs are discussed. In addition, the progress toward the commercialization of IS-OECTs is highlighted, and the recently proposed solutions or alternatives are summarized. The main challenges and perspectives for fully exploiting IS-OECTs toward future preventive and personal medical devices are addressed.
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Affiliation(s)
- Yang Li
- College of Electronic and Optical Engineering, and College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications (NJUPT), 9 Wenyuan Road, Nanjing, Jiangsu, 210023, China
| | - Binbin Cui
- Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China
| | - Shiming Zhang
- Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China
| | - Bingxiang Li
- College of Electronic and Optical Engineering, and College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications (NJUPT), 9 Wenyuan Road, Nanjing, Jiangsu, 210023, China
| | - Jianmin Li
- College of Electronic and Optical Engineering, and College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications (NJUPT), 9 Wenyuan Road, Nanjing, Jiangsu, 210023, China
| | - Shujuan Liu
- State Key Laboratory of Organic Electronics and Information Displays, and Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications (NJUPT), 9 Wenyuan Road, Nanjing, Jiangsu, 210023, China
| | - Qiang Zhao
- College of Electronic and Optical Engineering, and College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications (NJUPT), 9 Wenyuan Road, Nanjing, Jiangsu, 210023, China
- State Key Laboratory of Organic Electronics and Information Displays, and Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications (NJUPT), 9 Wenyuan Road, Nanjing, Jiangsu, 210023, China
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10
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Zhai J, Zhang Y, Zhao D, Kou L, Zhao G. In vivo monitoring of calcium ions in rat cerebrospinal fluid using an all-solid-state acupuncture needle based potentiometric microelectrode. Anal Chim Acta 2022; 1191:339209. [PMID: 35033241 DOI: 10.1016/j.aca.2021.339209] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 10/07/2021] [Accepted: 10/20/2021] [Indexed: 11/30/2022]
Abstract
Acupuncture needles are regarded as ideal materiel for the development of microelectrodes for in vivo sensing. In this work, an all-solid-state ion-selective microelectrode (ISμE) has been developed by coating a calcium ion-selective membrane on an acupuncture needle tip with a diameter of less than 80 μm, which is modified with poly(3,4-ethylenedioxythiophene)-poly(sodium 4-styrenesulfonate) as solid contact. The proposed Ca2+-ISμE shows a Nernstian response toward Ca2+ in the range from 1.0 × 10-6 to 3.1 × 10-3 M with a slope of 30.8 ± 0.9 mV/decade (R2 = 0.999), and the detection limit is 1.2 × 10-7 M. The Ca2+-ISμE has been used for in vivo monitoring of the calcium changes in rat cerebrospinal fluid (CSF) under the injury of spinal cord transection. The results demonstrate that the calcium concentration in CSF increases sharply from the normal level of 20.6 ± 1.72 μM (n = 3) to 133.2 ± 7.63 μM (n = 3) with a severe fluctuation after spinal cord damage. Thus, the proposed Ca2+-ISμE is available for in vivo monitoring of calcium ions with high temporal resolution and flexibility. The detection system can be extended to measure other ions in CSF by changing different ion-selective membranes.
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Affiliation(s)
- Jiali Zhai
- School of Rehabilitation, Binzhou Medical University, Yantai, PR, 264003, China
| | - Yaqun Zhang
- School of Basic Medicine, Binzhou Medical University, Yantai, PR, 264003, China
| | - Dongmei Zhao
- School of Basic Medicine, Binzhou Medical University, Yantai, PR, 264003, China
| | - Lijuan Kou
- School of Pharmacy, Binzhou Medical University, Yantai, PR, 264003, China
| | - Guangtao Zhao
- School of Basic Medicine, Binzhou Medical University, Yantai, PR, 264003, China.
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11
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Lisak G. Reliable environmental trace heavy metal analysis with potentiometric ion sensors - reality or a distant dream. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 289:117882. [PMID: 34364114 DOI: 10.1016/j.envpol.2021.117882] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Revised: 07/13/2021] [Accepted: 07/29/2021] [Indexed: 06/13/2023]
Abstract
Over two decades have passed since polymeric membrane ion-selective electrodes were found to exhibit sufficiently lower detection limits. This in turn brought a great promise to measure trace level concentrations of heavy metals using potentiometric ion sensors at environmental conditions. Despite great efforts, trace analysis of heavy metals using ion-selective electrodes at environmental conditions is still not commercially available. This work will predominantly concentrate on summarizing and evaluating prospects of using potentiometric ion sensors in view of environmental determination of heavy metals in on-site and on-line analysis modes. Challenges associated with development of reliable potentiometric sensors to be operational in environmental conditions will be discussed and reasoning behind unsuccessful efforts to develop potentiometric on-site and on-line environmental ion sensors will be explored. In short, it is now clear that solely lowering the detection limit of the ion-selective electrodes does not guarantee development of successful sensors that would meet the requirement of environmental matrices over long term usage. More pressing challenges of the properties and the performance of the potentiometric sensors must be addressed first before considering extending their sensitivity to low analyte concentrations. These are, in order of importance, selectivity of the ion-selective membrane to main ion followed by the membrane resistance to parallel processes, such as water ingress to the ISM, light sensitivity, change in temperature, presence of gasses in solution and pH and finally resistance of the ion-selective membrane to fouling. In the future, targeted on-site and on-line environmental sensors should be developed, addressing specific environmental conditions. Thus, ion-selective electrodes should be developed with the intention to be suitable to the operational environmental conditions, rather than looking at universal sensor design validated in the idealized and simple sample matrices.
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Affiliation(s)
- Grzegorz Lisak
- School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore; Residues and Resource Reclamation Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, Singapore, 637141, Singapore.
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12
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Rousseau CR, Bühlmann P. Calibration-free potentiometric sensing with solid-contact ion-selective electrodes. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2021.116277] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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13
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Nikitina VN, Maksimova ED, Zavolskova MD, Karyakin AA. Flow injection amperometry as an alternative to potentiometry for solid contact ion-selective membrane-based electrodes. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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14
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Cheong YH, Ge L, Lisak G. Highly reproducible solid contact ion selective electrodes: Emerging opportunities for potentiometry - A review. Anal Chim Acta 2021; 1162:338304. [PMID: 33926699 DOI: 10.1016/j.aca.2021.338304] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 01/20/2021] [Accepted: 02/04/2021] [Indexed: 02/07/2023]
Abstract
The solid contact ion-selective electrodes (SC-ISEs) have been extensively studied in the field of ion sensing as they offer the possibility of miniaturization, are relatively inexpensive in comparison to other analytical techniques and allow straightforward and routine analyses of ions in a number of clinical, environmental and industrial process samples. In recent years, significant interest has grown in the development of SC-ISEs with well-defined interfacialpotentials at the membrane, solid contact, and substrate electrode interfaces. This has resulted in interesting SC-ISEs exhibiting high electrode-to-electrode potential reproducibility, for those made in a single batch of electrodes, some approaching or exceeding those observed in liquid-contact ISEs. The advancement in the potential reproducibility of SC-ISEs has been partially achieved by scrutinizing insufficiently reproducible fabrication methods of SC-ISEs, or by introducing novel control measures or modifiers to components of the ISEs. This paper provides an overview of the methods as well as the challenges in establishing and maintaining reproducible potentials during the fabrication and use of novel SC-ISEs. The rules outlined in the works reviewed may form the basis of further development of cost-effective, user-friendly, limited calibration or calibration-free potentiometric SC-ISEs to achieve reliable ion analyses here and now.
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Affiliation(s)
- Yi Heng Cheong
- School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore; Robert Bosch (South East Asia) Pte Ltd, 11 Bishan Street 21, Singapore, 573943, Singapore; Residues and Resource Reclamation Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, CleanTech One, Singapore, 637141, Singapore
| | - Liya Ge
- Residues and Resource Reclamation Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, CleanTech One, Singapore, 637141, Singapore
| | - Grzegorz Lisak
- School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore; Residues and Resource Reclamation Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, CleanTech One, Singapore, 637141, Singapore.
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15
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Han T, Mattinen U, Mousavi Z, Bobacka J. Coulometric response of solid-contact anion-sensitive electrodes. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2020.137566] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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16
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Paper as sampling substrates and all-integrating platforms in potentiometric ion determination. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2020.116070] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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17
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Cheong YH, Ge L, Zhao N, Teh LK, Lisak G. Ion selective electrodes utilizing a ferrocyanide doped redox active screen-printed solid contact - impact of electrode response to conditioning. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114262] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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18
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Krikstolaityte V, Ding R, Ruzgas T, Björklund S, Lisak G. Characterization of nano-layered solid-contact ion selective electrodes by simultaneous potentiometry and quartz crystal microbalance with dissipation. Anal Chim Acta 2020; 1128:19-30. [PMID: 32825902 DOI: 10.1016/j.aca.2020.06.044] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 06/15/2020] [Accepted: 06/18/2020] [Indexed: 01/12/2023]
Abstract
Nano-layered solid-contact potassium-selective electrodes (K+-ISEs) were explored as model ion-selective electrodes for their practical use in clinical analysis. The ultra-thin ISEs ought to be manufactured in a highly reproducible manner, potentially making them suitable for mass production. Thus, their development is pivotal towards miniaturised sensors with simplified conditioning/calibration protocols for point-of-care diagnostics. To study nano-layered ISEs, the ultra-thin nature of ISEs for the first time enabled to combine potentiometry-quartz crystal microbalance with dissipation (QCM-D) to obtain value-added information on the ISE potentiometric response regarding their physical state such as mass/thickness/viscoelastic properties/structural homogeneity. Specifically, the studies were focused on real-time observations of the ISE potentiometric response in relation to changes of their physicochemical properties during the ISE preparation (conditioning) and operation (including biofouling conditions) to identify the occurring processes that may accordingly be critical for potential instability of the ISEs, impeding their practical application. The K+-ISEs were prepared on a QCM-D gold sensor by electrodepositing poly(3,4-ethylenedioxythiophene)-poly(styrene sulfonate) layer serving as an ion-to-electron transducer subsequently covered by a spin-coated poly(vinyl chloride) based K+-ion selective membrane (K+-ISM). The studies demonstrated that the performance of the nano-layered design of K+-ISEs is detrimentally affected by such processes as water layer formation accordingly causing the instability of the electrode potential. The changes in the ISE physical state such mass/viscoelastic properties associated with water layer formation and origin of the potential instability was already observed at the ISE conditioning stage. The potential instability of nano-layered ISEs limits their practical applicability, indicating the need of new solutions in designing ISEs, for instance, exploiting new water-resistant materials and modifying preparation protocols.
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Affiliation(s)
- Vida Krikstolaityte
- Nanyang Technological University, School Civil & Environmental Engineering, 50 Nanyang Avenue, Singapore, 639798, Singapore; Nanyang Technological University, Nanyang Environmental & Water Research Institute, R3C, 1 Cleantech Loop, Singapore, 637141, Singapore; Nanyang Technological University, Energy Research Institute @NTU (ERI@N), SCARCE laboratory, 50 Nanyang Avenue, Singapore, 639798, Singapore.
| | - Ruiyu Ding
- Nanyang Technological University, School Civil & Environmental Engineering, 50 Nanyang Avenue, Singapore, 639798, Singapore; Nanyang Technological University, Nanyang Environmental & Water Research Institute, R3C, 1 Cleantech Loop, Singapore, 637141, Singapore
| | - Tautgirdas Ruzgas
- Department of Biomedical Science & Biofilms-Research Center for Biointerfaces, Malmo University, 205 06, Malmo, Sweden
| | - Sebastian Björklund
- Department of Biomedical Science & Biofilms-Research Center for Biointerfaces, Malmo University, 205 06, Malmo, Sweden
| | - Grzegorz Lisak
- Nanyang Technological University, School Civil & Environmental Engineering, 50 Nanyang Avenue, Singapore, 639798, Singapore; Nanyang Technological University, Nanyang Environmental & Water Research Institute, R3C, 1 Cleantech Loop, Singapore, 637141, Singapore.
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19
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Han T, Mousavi Z, Mattinen U, Bobacka J. Coulometric response characteristics of solid contact ion-selective electrodes for divalent cations. J Solid State Electrochem 2020. [DOI: 10.1007/s10008-020-04718-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AbstractThe chronoamperometric and coulometric response of solid contact ion-selective electrodes (SCISEs) for the detection of divalent cations was investigated in order to provide a more complete description of the mechanism of the recently introduced coulometric transduction method for SCISEs. The coulometric transduction method has earlier been employed only for SCISEs that were selective to monovalent ions. The SCISEs utilized poly(3,4-ethylenedioxythiophene) (PEDOT) doped with poly(styrene sulfonate) (PSS−) as the solid contact (ion-to-electron transducer). PEDOT(PSS) was electrodeposited on glassy carbon and covered with plasticized PVC-based ion-selective membranes (ISMs) that were selective towards divalent cations (Ca2+, Pb2+). In contrast to earlier studies, the results obtained in this work show that the coulometric response for the Pb2+-SCISE was limited mainly by ion transport in the PEDOT(PSS) layer, which was not the case for the Ca2+-SCISE, nor was it observed earlier for the monovalent ions. The exceptional behavior of the Pb2+-SCISE was explored further by electrochemical impedance spectroscopy, and it was shown that the effective redox capacitance of PEDOT(PSS) was significantly higher for the Pb2+-SCISE than for the Ca2+-SCISE although the polymerization charge of PEDOT(PSS) was the same. The slow transport of Pb2+ in PEDOT(PSS) was tentatively related to complexation between Pb2+ and PEDOT(PSS).
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20
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Papp S, Kozma J, Lindfors T, Gyurcsányi RE. Lipophilic Multi‐walled Carbon Nanotube‐based Solid Contact Potassium Ion‐selective Electrodes with Reproducible Standard Potentials. A Comparative Study. ELECTROANAL 2020. [DOI: 10.1002/elan.202000045] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Soma Papp
- Department of Inorganic and Analytical Chemistry, BME Lendület Chemical Nanosensor Research GroupBudapest University of Technology and Economics Szt. Gellert tér 4 H-1111 Budapest Hungary
| | - József Kozma
- Department of Inorganic and Analytical Chemistry, BME Lendület Chemical Nanosensor Research GroupBudapest University of Technology and Economics Szt. Gellert tér 4 H-1111 Budapest Hungary
| | - Tom Lindfors
- Åbo Akademi University, Johan Gadolin Process Chemistry CentreLaboratory of Molecular Science and Engineering Biskopsgatan 8 FIN-20500 Åbo Finland
| | - Róbert E. Gyurcsányi
- Department of Inorganic and Analytical Chemistry, BME Lendület Chemical Nanosensor Research GroupBudapest University of Technology and Economics Szt. Gellert tér 4 H-1111 Budapest Hungary
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21
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Park HJ, Jeong JM, Yoon JH, Son SG, Kim YK, Kim DH, Lee KG, Choi BG. Preparation of ultrathin defect-free graphene sheets from graphite via fluidic delamination for solid-contact ion-to-electron transducers in potentiometric sensors. J Colloid Interface Sci 2020; 560:817-824. [DOI: 10.1016/j.jcis.2019.11.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 10/29/2019] [Accepted: 11/01/2019] [Indexed: 02/01/2023]
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22
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Shao Y, Ying Y, Ping J. Recent advances in solid-contact ion-selective electrodes: functional materials, transduction mechanisms, and development trends. Chem Soc Rev 2020; 49:4405-4465. [DOI: 10.1039/c9cs00587k] [Citation(s) in RCA: 143] [Impact Index Per Article: 35.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This article presents a comprehensive overview of recent progress in the design and applications of solid-contact ion-selective electrodes (SC-ISEs).
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Affiliation(s)
- Yuzhou Shao
- Laboratory of Agricultural Information Intelligent Sensing
- School of Biosystems Engineering and Food Science
- Zhejiang University
- Hangzhou
- China
| | - Yibin Ying
- Laboratory of Agricultural Information Intelligent Sensing
- School of Biosystems Engineering and Food Science
- Zhejiang University
- Hangzhou
- China
| | - Jianfeng Ping
- Laboratory of Agricultural Information Intelligent Sensing
- School of Biosystems Engineering and Food Science
- Zhejiang University
- Hangzhou
- China
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23
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Joon NK, He N, Ruzgas T, Bobacka J, Lisak G. PVC-Based Ion-Selective Electrodes with a Silicone Rubber Outer Coating with Improved Analytical Performance. Anal Chem 2019; 91:10524-10531. [DOI: 10.1021/acs.analchem.9b01490] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Narender Kumar Joon
- Åbo Akademi University, Johan Gadolin Process Chemistry Centre, Laboratory of Analytical Chemistry, Biskopsgatan 8, FI-20500 Turku/Åbo, Finland
| | - Ning He
- Åbo Akademi University, Johan Gadolin Process Chemistry Centre, Laboratory of Analytical Chemistry, Biskopsgatan 8, FI-20500 Turku/Åbo, Finland
| | - Tautgirdas Ruzgas
- Department of Biomedical Science, Faculty of Health and Society, 205 06 Malmö, Sweden; Biofilms - Research Center for Biointerfaces, Malmö University, 214 32 Malmö, Sweden
| | - Johan Bobacka
- Åbo Akademi University, Johan Gadolin Process Chemistry Centre, Laboratory of Analytical Chemistry, Biskopsgatan 8, FI-20500 Turku/Åbo, Finland
| | - Grzegorz Lisak
- College of Engineering, School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
- Nanyang Environment and Water Research Institute, 1 Cleantech Loop, CleanTech, Singapore 637141, Singapore
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24
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Papp S, Bojtár M, Gyurcsányi RE, Lindfors T. Potential Reproducibility of Potassium-Selective Electrodes Having Perfluorinated Alkanoate Side Chain Functionalized Poly(3,4-ethylenedioxytiophene) as a Hydrophobic Solid Contact. Anal Chem 2019; 91:9111-9118. [PMID: 31184105 PMCID: PMC6750645 DOI: 10.1021/acs.analchem.9b01587] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The irreproducibility of the standard potential (E°) is probably the last major challenge for the commercialization of solid-contact ion-selective electrodes (SCISEs) as single-use or wearable sensors. To overcome this issue, we are introducing for the first time a perfluorinated alkanoate side chain functionalized poly(3,4-ethylenedioxythiophene) (PEDOTF) as a hydrophobic SC in potassium-selective electrodes (K-SCISEs) based on plasticized poly(vinyl chloride). The SC incorporates the tetrakis(pentafluorophenyl)borate (TFAB-) anion, which is also present as a lipophilic additive in the ion-selective membrane (ISM), thus ensuring thermodynamic reversibility at the SC/ISM interface and improving the potential reproducibility of the electrodes. We show here that the PEDOTF-TFAB solid contact, which was prepolarized prior to the ISM deposition to either its half or fully conducting form (i.e. different oxidation states) in acetonitrile containing 0.01 M KTFAB, had a very stable open-circuit potential and an outstanding potential reproducibility of only ±0.5 mV (n = 6) for 1 h in the same solution after the prepolarization. This shows that the oxidation state of the highly hydrophobic PEDOTF-TFAB film (water contact angle 133°) is stable over time and can be precisely controlled with prepolarization. The SC was also not light sensitive, which is normally a disadvantage of conducting polymer SCs. After the ISM deposition, the standard deviation of the E° of the K-SCISEs prepared on glassy carbon was ±3.0 mV (n = 5), which is the same as that for conventional liquid contact K-ISEs. This indicates that the ISM deposition is the main source for the potential irreproducibility of the K-SCISEs, which has been overlooked previously.
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Affiliation(s)
- Soma Papp
- Department of Inorganic and Analytical Chemistry, Chemical Nanosensor Research Group , Budapest University of Technology and Economics , Szt. Gellért tér 4 , H-1111 Budapest , Hungary
| | - Márton Bojtár
- Chemical Biology Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences , Hungarian Academy of Sciences , Magyar tudósok krt. 2 , H-1117 Budapest , Hungary
| | - Róbert E Gyurcsányi
- Department of Inorganic and Analytical Chemistry, Chemical Nanosensor Research Group , Budapest University of Technology and Economics , Szt. Gellért tér 4 , H-1111 Budapest , Hungary
| | - Tom Lindfors
- Åbo Akademi University , Faculty of Science and Engineering, Laboratory of Analytical Chemistry , Biskopsgatan 8 , FIN-20500 Åbo , Finland
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25
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Doped PANI Coated Nano-Ag Electrode for Rapid In-Situ Detection of Bromide in Seawater. COATINGS 2019. [DOI: 10.3390/coatings9050325] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In this paper, we successfully fabricated a novel bromide ion selective electrode (Br-ISE), which was coated by bromine ion doped polyaniline as sensitive film. Using Ag wire as the substrate, a uniform and dense nano-silver layer was electroplated to enhance the specific surface area of the electrode. Subsequently, a polyaniline (PANI) film was coated onto the electrode by cyclic voltammetry in a 0.3 M aniline and 1 M HCl solution and was in-situ doped by 0.1 M KBr solution. The morphology and performance of the electrode were characterized by scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS), and other electrochemical analysis methods, respectively. The prepared Br-ISE exhibited a wide linear dynamic range between 1.0 × 10−1 and 1.0 × 10−7 M with a near-Nernst slope of 57.33 mV/decade. In addition, the electrode possessed extremely fast response time (<1 s) and low impedance (300 Ω), high sensitivity, and good selectivity. The electrode potential drifted within 2 mV in 8 h. The lifespan was larger than three months.
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26
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Kalinichev AV, Pokhvishcheva NV, Peshkova MA. Significant Reduction of Analysis Time with Bulk Sensors Operating in Nonequilibrium Mode. Anal Chem 2019; 91:5362-5370. [DOI: 10.1021/acs.analchem.9b00459] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andrey V. Kalinichev
- Chemistry Institute, Saint Petersburg State University 26 Universitetskiy Prospect, 198504 Saint Petersburg, Russia
| | - Nadezhda V. Pokhvishcheva
- Chemistry Institute, Saint Petersburg State University 26 Universitetskiy Prospect, 198504 Saint Petersburg, Russia
| | - Maria A. Peshkova
- Chemistry Institute, Saint Petersburg State University 26 Universitetskiy Prospect, 198504 Saint Petersburg, Russia
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27
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Cuartero M, Parrilla M, Crespo GA. Wearable Potentiometric Sensors for Medical Applications. SENSORS (BASEL, SWITZERLAND) 2019; 19:E363. [PMID: 30658434 PMCID: PMC6359219 DOI: 10.3390/s19020363] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 01/09/2019] [Accepted: 01/15/2019] [Indexed: 01/26/2023]
Abstract
Wearable potentiometric sensors have received considerable attention owing to their great potential in a wide range of physiological and clinical applications, particularly involving ion detection in sweat. Despite the significant progress in the manner that potentiometric sensors are integrated in wearable devices, in terms of materials and fabrication approaches, there is yet plenty of room for improvement in the strategy adopted for the sample collection. Essentially, this involves a fluidic sampling cell for continuous sweat analysis during sport performance or sweat accumulation via iontophoresis induction for one-spot measurements in medical settings. Even though the majority of the reported papers from the last five years describe on-body tests of wearable potentiometric sensors while the individual is practicing a physical activity, the medical utilization of these devices has been demonstrated on very few occasions and only in the context of cystic fibrosis diagnosis. In this sense, it may be important to explore the implementation of wearable potentiometric sensors into the analysis of other biofluids, such as saliva, tears and urine, as herein discussed. While the fabrication and uses of wearable potentiometric sensors vary widely, there are many common issues related to the analytical characterization of such devices that must be consciously addressed, especially in terms of sensor calibration and the validation of on-body measurements. After the assessment of key wearable potentiometric sensors reported over the last five years, with particular attention paid to those for medical applications, the present review offers tentative guidance regarding the characterization of analytical performance as well as analytical and clinical validations, thereby aiming at generating debate in the scientific community to allow for the establishment of well-conceived protocols.
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Affiliation(s)
- María Cuartero
- Department of Chemistry, KTH Royal Institute of Technology, Teknikringen 30, SE-10044 Stockholm, Sweden.
| | - Marc Parrilla
- Department of Chemistry, KTH Royal Institute of Technology, Teknikringen 30, SE-10044 Stockholm, Sweden.
| | - Gaston A Crespo
- Department of Chemistry, KTH Royal Institute of Technology, Teknikringen 30, SE-10044 Stockholm, Sweden.
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28
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In-field determination of soil ion content using a handheld device and screen-printed solid-state ion-selective electrodes. PLoS One 2018; 13:e0203862. [PMID: 30252859 PMCID: PMC6155443 DOI: 10.1371/journal.pone.0203862] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Accepted: 08/29/2018] [Indexed: 11/19/2022] Open
Abstract
Small-holding farmers in the developing world suffer from sub-optimal crop yields because they lack a soil diagnostic system that is affordable, usable, and actionable. This paper details the fabrication and characterization of an integrated point-of-use soil-testing system, comprised of disposable ion-selective electrode strips and a handheld electrochemical reader. Together, the strips and reader transduce soil ion concentrations into to an alphanumeric output that can be communicated via text message to a central service provider offering immediate, customized fertilizer advisory. The solid-state ion-selective electrode (SS-ISE) strips employ a two-electrode design with screen-printable carbon nanotube ink serving as the electrical contacts for the working and reference electrodes. The working electrode comprises a plasticizer-free butyl acrylate ion-selective membrane (ISM), doped with an ion-selective ionophore and lipophilic salt. Meanwhile, the reference electrode includes a screen-printed silver-silver chloride ink and a polyvinyl-butyral membrane, which is doped with sodium chloride for stable reference potentials. As a proof of concept, potassium-selective electrodes are studied, given potassium’s essential role in plant growth and reproduction. The ISE-based system is reproducibly manufactured to yield a Nernstian response with a sub-micromolar detection limit (pK+ of 5.18 ± 0.08) and near-Nernstian sensitivity (61 mV/decade) in the presence of a 0.02 M strontium chloride extraction solution. Analysis of soil samples using the printed electrodes and reader yielded a correlation coefficient of 𝑅2 = 0.89 with respect to values measured via inductively coupled plasma atomic emission spectroscopy (ICP-AES). The reliable performance of this system is encouraging toward its deployment for soil nutrient management in resource-limited environments.
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29
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Effect of oxidation ratio of conducting polymer on potential stability of the conducting polymer-coated electrode in voltammetric cell for the ion transfer. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2018.07.057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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30
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Ion-Selective Electrodes for Detection of Lead (II) in Drinking Water: A Mini-Review. ENVIRONMENTS 2018. [DOI: 10.3390/environments5090095] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Despite the fact that the adverse health effects due to the intake of lead have been well studied and widely recognized, lead contamination in drinking water has been reoccurring worldwide, with some incidents escalating into a public drinking water crisis. As lead contamination is often related to lead-based pipes close to or inside homes, it is not realistic, at least in the near term, to remove and replace all lead connection pipes and lead-based plumbing. Effective monitoring of lead concentration at consumers’ water taps remains critical for providing consumers with first-hand information and preventing potential wide-spread lead contamination in drinking water. This review paper examines the existing common technologies for laboratory testing and on-site measuring of lead concentrations. As the conventional analytical techniques for lead detection require using expensive instruments, as well as a high time for sample preparation and a skilled operator, an emphasis is placed on reviewing ion-selective electrode (ISE) technology due to its superior performance, low cost, ease of use, and its promising potential to be miniaturized and integrated into standalone sensing units. In a holistic way, this paper reviews and discusses the background, different types of ISEs are reviewed and discussed, namely liquid-contact ISEs and solid-contact ISEs. Along with the potential opportunities for further research, the limitations and unique challenges of ISEs for lead detection are also discussed in detail.
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31
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Mousavi MPS, Ainla A, Tan EKW, K Abd El-Rahman M, Yoshida Y, Yuan L, Sigurslid HH, Arkan N, Yip MC, Abrahamsson CK, Homer-Vanniasinkam S, Whitesides GM. Ion sensing with thread-based potentiometric electrodes. LAB ON A CHIP 2018; 18:2279-2290. [PMID: 29987296 DOI: 10.1039/c8lc00352a] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Potentiometric sensing of ions with ion-selective electrodes (ISEs) is a powerful technique for selective and sensitive measurement of ions in complex matrices. The application of ISEs is generally limited to laboratory settings, because most commercially available ISEs and reference electrodes are large, delicate, and expensive, and are not suitable for point-of-use or point-of-care measurements. This work utilizes cotton thread as a substrate for fabrication of robust and miniaturized ISEs that are suitable for point-of-care or point-of-use applications. Thread-based ISEs selective for Cl-, K+, Na+, and Ca2+ were developed. The cation-selective ISEs were fabricated by coating the thread with a surfactant-free conductive ink (made of carbon black) and then coating the tip of the conductive thread with the ion-selective membrane. The Cl- ISE was fabricated by coating the thread with an Ag/AgCl ink. These sensors exhibited slopes (of electrical potential vs. log concentration of target ion), close to the theoretically-expected values, over four orders of magnitude in concentrations of ions. Because thread is mechanically strong, the thread-based electrodes can be used in multiple-use applications as well as single-use applications. Multiple thread-based sensors can be easily bundled together to fabricate a customized sensor for multiplexed ion-sensing. These electrodes require volumes of sample as low as 200 μL. The application of thread-based ISEs is demonstrated in the analysis of ions in soil, food, and dietary supplements (Cl- in soil/water slurry, K+ and Na+ in coconut water, and Ca2+ in a calcium supplement), and in detection of physiological electrolytes (K+ and Na+ in blood serum and urine, with sufficient accuracy for clinical diagnostics).
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Affiliation(s)
- Maral P S Mousavi
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, USA.
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32
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Timofeev VV, Levin MB, Starikova AA, Trofimov MA, Korneev SM, Mikhelson KN. Solid-Contact Ion-Selective Electrodes with Copper Hexacyanoferrate in the Transducer Layer. RUSS J ELECTROCHEM+ 2018. [DOI: 10.1134/s1023193518040080] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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33
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Ding J, Yu N, Wang X, Qin W. Sequential and Selective Detection of Two Molecules with a Single Solid-Contact Chronopotentiometric Ion-Selective Electrode. Anal Chem 2018; 90:1734-1739. [DOI: 10.1021/acs.analchem.7b03522] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Jiawang Ding
- Key
Laboratory of Coastal Environmental Processes and Ecological Remediation,
Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS); Shandong Provincial Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, Shandong 264003, People’s Republic of China
| | - Nana Yu
- Department
of Environmental Sciences, Key Laboratory of Watershed Science and
Health of Zhejiang Province, Wenzhou Medical University, Wenzhou 325035, People’s Republic of China
| | - Xuedong Wang
- Department
of Environmental Sciences, Key Laboratory of Watershed Science and
Health of Zhejiang Province, Wenzhou Medical University, Wenzhou 325035, People’s Republic of China
| | - Wei Qin
- Key
Laboratory of Coastal Environmental Processes and Ecological Remediation,
Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS); Shandong Provincial Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, Shandong 264003, People’s Republic of China
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34
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Crespo GA. Recent Advances in Ion-selective membrane electrodes for in situ environmental water analysis. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.05.159] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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35
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Kiefer R, Kesküla A, Martinez JG, Anbarjafari G, Torop J, Otero TF. Interpenetrated triple polymeric layer as electrochemomechanical actuator: Solvent influence and diffusion coefficient of counterions. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.01.191] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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36
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Klink S, Ishige Y, Schuhmann W. Prussian Blue Analogues: A Versatile Framework for Solid-Contact Ion-Selective Electrodes with Tunable Potentials. ChemElectroChem 2017. [DOI: 10.1002/celc.201700091] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Stefan Klink
- Analytical Chemistry - Center for Electrochemical Sciences; Ruhr-University Bochum; Universitätsstr. 150 44780 Bochum Germany
| | - Yu Ishige
- Center for Technology Innovation - Healthcare; Research & Development Group, Hitachi Ltd.; Higashi-Koigakubo 1-280 Kokubunji-shi Japan
| | - Wolfgang Schuhmann
- Analytical Chemistry - Center for Electrochemical Sciences; Ruhr-University Bochum; Universitätsstr. 150 44780 Bochum Germany
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37
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Han T, Vanamo U, Bobacka J. Influence of Electrode Geometry on the Response of Solid-Contact Ion-Selective Electrodes when Utilizing a New Coulometric Signal Readout Method. ChemElectroChem 2016. [DOI: 10.1002/celc.201600575] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Tingting Han
- Laboratory of Analytical Chemistry; Johan Gadolin Process Chemistry Centre; Åbo Akademi University; Biskopsgatan 8 FI-20500 Åbo Finland
| | - Ulriika Vanamo
- Laboratory of Analytical Chemistry; Johan Gadolin Process Chemistry Centre; Åbo Akademi University; Biskopsgatan 8 FI-20500 Åbo Finland
| | - Johan Bobacka
- Laboratory of Analytical Chemistry; Johan Gadolin Process Chemistry Centre; Åbo Akademi University; Biskopsgatan 8 FI-20500 Åbo Finland
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38
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Bieg C, Fuchsberger K, Stelzle M. Introduction to polymer-based solid-contact ion-selective electrodes—basic concepts, practical considerations, and current research topics. Anal Bioanal Chem 2016; 409:45-61. [DOI: 10.1007/s00216-016-9945-6] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Revised: 07/26/2016] [Accepted: 09/14/2016] [Indexed: 11/30/2022]
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39
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Vanamo U, Hupa E, Yrjänä V, Bobacka J. New Signal Readout Principle for Solid-Contact Ion-Selective Electrodes. Anal Chem 2016; 88:4369-74. [DOI: 10.1021/acs.analchem.5b04800] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Ulriika Vanamo
- Laboratory
of Analytical Chemistry, Johan Gadolin Process Chemistry Centre, Åbo Akademi University, Biskopsgatan 8, FI-20500 Åbo, Finland
- Laboratory
of Materials Chemistry and Chemical Analysis, University of Turku, Vatselankatu 2, 20500 Turku, Finland
| | - Elisa Hupa
- Laboratory
of Analytical Chemistry, Johan Gadolin Process Chemistry Centre, Åbo Akademi University, Biskopsgatan 8, FI-20500 Åbo, Finland
- Graduate
School in Chemical Engineering (GSCE), Åbo Akademi University, Tavastgatan
13, FI-20500 Åbo, Finland
| | - Ville Yrjänä
- Laboratory
of Analytical Chemistry, Johan Gadolin Process Chemistry Centre, Åbo Akademi University, Biskopsgatan 8, FI-20500 Åbo, Finland
| | - Johan Bobacka
- Laboratory
of Analytical Chemistry, Johan Gadolin Process Chemistry Centre, Åbo Akademi University, Biskopsgatan 8, FI-20500 Åbo, Finland
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40
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Ishige Y, Klink S, Schuhmann W. Intercalation Compounds as Inner Reference Electrodes for Reproducible and Robust Solid-Contact Ion-Selective Electrodes. Angew Chem Int Ed Engl 2016; 55:4831-5. [DOI: 10.1002/anie.201600111] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 02/02/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Yu Ishige
- Center for Technology Innovation, Healthcare, Research & Development Group; Hitachi Ltd.; Higashi-Koigakubo 1-280 Kokubunji-shi, Tokyo, 185-8601 Japan
| | - Stefan Klink
- Analytical Chemistry, Center for Electrochemical Sciences; Ruhr-University Bochum; Universitätsstrasse 150 44780 Bochum Germany
| | - Wolfgang Schuhmann
- Analytical Chemistry, Center for Electrochemical Sciences; Ruhr-University Bochum; Universitätsstrasse 150 44780 Bochum Germany
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41
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Ishige Y, Klink S, Schuhmann W. Interkalationsverbindungen als Referenzelektroden für reproduzierbare und robuste ionenselektive Festkontaktelektroden. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201600111] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yu Ishige
- Center for Technology Innovation, Healthcare, Research & Development Group Hitachi Ltd. Higashi-Koigakubo 1–280 Kokubunji-shi, Tokyo, 185-8601 Japan
| | - Stefan Klink
- Analytische Chemie, Zentrum für Elektrochemie (CES) Ruhr-Universität Bochum Universitätsstraße 150 44780 Bochum Deutschland
| | - Wolfgang Schuhmann
- Analytische Chemie, Zentrum für Elektrochemie (CES) Ruhr-Universität Bochum Universitätsstraße 150 44780 Bochum Deutschland
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42
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Hu J, Stein A, Bühlmann P. Rational design of all-solid-state ion-selective electrodes and reference electrodes. Trends Analyt Chem 2016. [DOI: 10.1016/j.trac.2015.11.004] [Citation(s) in RCA: 220] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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43
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Kivilo A, Zondaka Z, Kesküla A, Rasti P, Tamm T, Kiefer R. Electro-chemo-mechanical deformation properties of polypyrrole/dodecylbenzenesulfate linear actuators in aqueous and organic electrolyte. RSC Adv 2016. [DOI: 10.1039/c6ra20766a] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The immobilization of dodecylbenzenesulfonate (DBS−) in polypyrrole (PPy) during electropolymerization is typically expected to lead to cation-driven activity. Here we demonstrate that the actuation direction changed by using same electrolyte but different solvent.
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Affiliation(s)
- A. Kivilo
- Intelligent Materials and Systems Lab
- Institute of Technology
- University of Tartu
- 50411 Tartu
- Estonia
| | - Z. Zondaka
- Intelligent Materials and Systems Lab
- Institute of Technology
- University of Tartu
- 50411 Tartu
- Estonia
| | - A. Kesküla
- Intelligent Materials and Systems Lab
- Institute of Technology
- University of Tartu
- 50411 Tartu
- Estonia
| | - P. Rasti
- iCV Research Group
- Institute of Technology
- University of Tartu
- 50411 Tartu
- Estonia
| | - T. Tamm
- Intelligent Materials and Systems Lab
- Institute of Technology
- University of Tartu
- 50411 Tartu
- Estonia
| | - R. Kiefer
- Intelligent Materials and Systems Lab
- Institute of Technology
- University of Tartu
- 50411 Tartu
- Estonia
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44
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Affiliation(s)
- Eric Bakker
- Department of Inorganic and
Analytical Chemistry, University of Geneva, 1211 Geneva, Switzerland
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45
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Mikhelson KN, Peshkova MA. Advances and trends in ionophore-based chemical sensors. RUSSIAN CHEMICAL REVIEWS 2015. [DOI: 10.1070/rcr4506] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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46
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Hupa E, Vanamo U, Bobacka J. Novel Ion-to-Electron Transduction Principle for Solid-Contact ISEs. ELECTROANAL 2015. [DOI: 10.1002/elan.201400596] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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47
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Vanamo U, Bobacka J. Instrument-Free Control of the Standard Potential of Potentiometric Solid-Contact Ion-Selective Electrodes by Short-Circuiting with a Conventional Reference Electrode. Anal Chem 2014; 86:10540-5. [DOI: 10.1021/ac501464s] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ulriika Vanamo
- Laboratory of Analytical
Chemistry, Process
Chemistry Centre, Åbo Akademi University, Biskopsgatan 8, 20500 Turku-Åbo, Finland
| | - Johan Bobacka
- Laboratory of Analytical
Chemistry, Process
Chemistry Centre, Åbo Akademi University, Biskopsgatan 8, 20500 Turku-Åbo, Finland
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48
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Zou XU, Zhen XV, Cheong JH, Bühlmann P. Calibration-Free Ionophore-Based Ion-Selective Electrodes With a Co(II)/Co(III) Redox Couple-Based Solid Contact. Anal Chem 2014; 86:8687-92. [DOI: 10.1021/ac501625z] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xu U. Zou
- Department of Chemistry, University of Minnesota, 207 Pleasant
Street SE, Minneapolis, Minnesota 55455, United States
| | - Xue V. Zhen
- Department of Chemistry, University of Minnesota, 207 Pleasant
Street SE, Minneapolis, Minnesota 55455, United States
| | - Jia H. Cheong
- Department of Chemistry, University of Minnesota, 207 Pleasant
Street SE, Minneapolis, Minnesota 55455, United States
| | - Philippe Bühlmann
- Department of Chemistry, University of Minnesota, 207 Pleasant
Street SE, Minneapolis, Minnesota 55455, United States
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