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Chipangura Y, Komal M, Brandao VSM, Sedmak C, Choi JS, Swisher SL, Bühlmann P, Stein A. Nanoporous Carbon Materials as Solid Contacts for Microneedle Ion-Selective Sensors. ACS APPLIED MATERIALS & INTERFACES 2024; 16:44428-44439. [PMID: 39146498 DOI: 10.1021/acsami.4c07683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/17/2024]
Abstract
Continuous sensing of biomarkers, such as potassium ions or pH, in wearable patches requires miniaturization of ion-selective sensor electrodes. Such miniaturization can be achieved by using nanostructured carbon materials as solid contacts in microneedle-based ion-selective and reference electrodes. Here we compare three carbon materials as solid contacts: colloid-imprinted mesoporous (CIM) carbon microparticles with ∼24-28 nm mesopores, mesoporous carbon nanospheres with 3-9 nm mesopores, and Super P carbon black nanoparticles without internal porosity but with textural mesoporosity in particle aggregates. We compare the effects of carbon architecture and composition on specific capacitance of the material, on the ability to incorporate ion-selective membrane components in the pores, and on sensor performance. Functioning K+ and H+ ion-selective electrodes and reference electrodes were obtained with gold-coated stainless-steel microneedles using all three types of carbon. The sensors gave near-Nernstian responses in clinically relevant concentration ranges, were free of potentially detrimental water layers, and showed no response to O2. They all exhibited sufficiently low long-term potential drift values to permit calibration-free, continuous operation for close to 1 day. In spite of the different specific capacitances and pore architecture of the three types of carbon, no significant difference in potential stability for K+ ion sensing was observed between electrodes that used each material. In the observed drift values, factors other than the carbon solid contact are likely to play a role, too. However, for pH sensing, electrodes with CIM as a carbon solid contact, which had the highest specific capacitance and best access to the pores, exhibited better long-term stability than electrodes with the other carbon materials.
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Affiliation(s)
- Yevedzo Chipangura
- Department of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
| | - Maria Komal
- Department of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
| | - Vilma S M Brandao
- Department of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
| | - Christopher Sedmak
- Department of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
| | - Jung Suk Choi
- Department of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
| | - Sarah L Swisher
- Department of Electrical and Computer Engineering, University of Minnesota, 200 Union St. SE, Minneapolis, Minnesota 55455, United States
| | - Philippe Bühlmann
- Department of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
| | - Andreas Stein
- Department of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
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Imali DY, Perera ECJ, Kaumal MN, Dissanayake DP. Conducting polymer functionalization in search of advanced materials in ionometry: ion-selective electrodes and optodes. RSC Adv 2024; 14:25516-25548. [PMID: 39139237 PMCID: PMC11321474 DOI: 10.1039/d4ra02615b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2024] [Accepted: 08/01/2024] [Indexed: 08/15/2024] Open
Abstract
Functionalized conducting polymers (FCPs) have recently garnered attention as ion-selective sensor materials, surpassing their intrinsic counterparts due to synergistic effects that lead to enhanced electrochemical and analytical parameters. Following a brief introduction of the fundamental concepts, this article provides a comprehensive review of the recent developments in the application of FCPs in ion-selective electrodes (ISEs) and ion-selective optodes (ISOs), particularly as ion-to-electron transducers, optical transducers, and ion-selective membranes. Utilizing FCPs in these devices offers a promising avenue for detecting and measuring ions in various applications, regardless of the sample nature and composition. Research has focused on functionalizing different conducting polymers, such as polyaniline and polypyrrole, through strategies such as doping and derivatization to alter their hydrophobicity, conductance, redox capacitance, surface area, pH sensitivity, gas and light sensitivity, etc. These modifications aim to enhance performance outcomes, including potential stability/emission signal stability, reproducibility and low detection limits. The advancements have led to the transition of ISEs from conventional zero-current potentiometric ion sensing to innovative current-triggered sensing approaches, enabling calibration-free applications and emerging concepts such as opto-electro dual sensing systems. The intrinsic pH cross-response and instability of the optical signal of ISOs have been overcome through the novel optical signal transduction mechanisms facilitated by FCPs. In this review, the characteristics of materials, functionalization approaches, particular implementation strategies, specific performance outcomes and challenges faced are discussed. Consolidating dispersed information in the field, the in-depth analysis presented here is poised to drive further innovations by broadening the scope of ion-selective sensors in real-world scenarios.
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Affiliation(s)
- D Yureka Imali
- Department of Chemistry, University of Colombo Colombo 03 Sri Lanka
| | | | - M N Kaumal
- Department of Chemistry, University of Colombo Colombo 03 Sri Lanka
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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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Shen T, Wang X, Ni J, Ma L, Zhang L, Wang C, Huang G. Pinecone derived hierarchical carbon nanostructure as a transducer in a solid-state ion-selective electrode for in vivo analysis of calcium ion. Anal Chim Acta 2024; 1305:342590. [PMID: 38677844 DOI: 10.1016/j.aca.2024.342590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 04/06/2024] [Accepted: 04/07/2024] [Indexed: 04/29/2024]
Abstract
Monitoring extracellular calcium ion (Ca2+) chemical signals in neurons is crucial for tracking physiological and pathological changes associated with brain diseases in live animals. Potentiometry based solid-state ion-selective electrodes (ISEs) with the assist of functional carbon nanomaterials as ideal solid-contact layer could realize the potential response for in vitro and in vivo analysis. Herein, we employ a kind of biomass derived porous carbon as a transducing layer to prompt efficient ion to electron transduction while stabilizes the potential drift. The eco-friendly porous carbon after activation (APB) displays a high specific area with inherit macropores, micropores, and large specific capacitance. When employed as transducer in ISEs, a stable potential response, minimized potential drift can be obtained. Benefiting from these excellent properties, a solid-state Ca2+ selective carbon fiber electrodes (CFEs) with a sandwich structure is constructed and employed for real time sensing of Ca2+ under electrical stimulation. This study presents a new approach to develop sustainable and versatile transducers in solid-state ISEs, a crucial way for in vivo sensing.
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Affiliation(s)
- Tongjun Shen
- College of New Energy and Materials, State Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing, 102249, China
| | - Ximin Wang
- College of New Energy and Materials, State Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing, 102249, China; CNOOC Tianjin Chemical Research and Design Institute Co. Ltd., Tianjin, 300131, China
| | - Jiping Ni
- College of New Energy and Materials, State Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing, 102249, China; College of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Ling Ma
- College of New Energy and Materials, State Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing, 102249, China
| | - Lifu Zhang
- College of New Energy and Materials, State Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing, 102249, China
| | - Chunxia Wang
- College of New Energy and Materials, State Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing, 102249, China.
| | - Guoyong Huang
- College of New Energy and Materials, State Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing, 102249, China.
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Hashem HM, Abdallah AB. A rational study of transduction mechanisms of different materials for all solid contact-ISEs. Sci Rep 2024; 14:5405. [PMID: 38443429 PMCID: PMC10914792 DOI: 10.1038/s41598-024-55729-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 02/27/2024] [Indexed: 03/07/2024] Open
Abstract
The new era of solid contact ion selective electrodes (SC-ISEs) miniaturized design has received an extensive amount of concern. Because it eliminated the requirement for ongoing internal solution composition optimization and created a two-phase system with stronger detection limitations. Herein, the determination of venlafaxine HCl is based on a comparison study between different ion- to electron transduction materials (such as; multiwalled carbon nanotubes (MWCNTs), polyaniline (PANi), and ferrocene) and illustrating their mechanisms in their applied sensors. Their different electrochemical features (such as bulk resistance (Rb**), double-layer capacitance (Cdl), geometric capacitance (Cg), and specific capacitance (Cp)) were evaluated and discussed by using the Electrochemical Impedance Spectroscopy (EIS), Chronopotentiometry (CP), and Cyclic Voltammetry (CV) experiments. The results indicated that each transducer's influence on the proposed sensor's electrochemical characteristics is determined by their unique chemical and physical properties. The electrochemical features vary for different solid contact materials used in transduction mechanisms. The results confirm that the MWCNT sensor revealed the best electrochemical behavior with the potentiometric response of a near-Nernestian slope of 56.1 ± 0.8 mV/decade with detection limits of 3.8 × 10-6 mol/L (r2 = 0.999) and a low potential drift (∆E/∆t) of 34.6 µV/s. Also, the selectivity study was performed in the presence of different interfering species either in single or complex matrices. This demonstrates excellent selectivity, stability, conductivity, and reliability as a VEN-TPB ion pair sensor for accurately measuring VEN in its various formulations. The proposed method was compared to HPLC reported technique and confirmed no significant difference between them. So, the proposed sensors fulfill their solutions' demand features for VEN appraisal.
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Affiliation(s)
- Heba M Hashem
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Mansoura University, Mansoura, 35516, Egypt.
| | - A B Abdallah
- Chemistry Department, Faculty of Science, Mansoura University, Mansoura, 35516, Egypt
- Chemistry Department, Faculty of Science, New Mansoura University, New Mansoura, Egypt
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McDonald SR, Tao S. An optical fiber chlorogenic acid sensor using a Chitosan membrane coated bent optical fiber probe. Anal Chim Acta 2024; 1288:342142. [PMID: 38220277 DOI: 10.1016/j.aca.2023.342142] [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: 07/27/2023] [Revised: 12/03/2023] [Accepted: 12/14/2023] [Indexed: 01/16/2024]
Abstract
Hydrogel polymers have hydrophilic function groups bonded on the polymer's backbone network. Water molecules and compounds soluble in aqueous solution can permeate into hydrogel's network. This property was employed in this work in developing an optical fiber chemical sensor for detecting chlorogenic acid (CGA). A Chitosan membrane was coated on a bent optical fiber probe (BOFP) by simply dipping the BOFP into a Chitosan solution, which was made by dissolving solid Chitosan in a 2 % acetic acid solution, and pulling out. When such a Chitosan-coated BOFP was exposed to CGA in an aqueous sample solution, CGA molecules permeate into the Chitosan membrane, and were detected through monitoring the compound's intrinsic optical absorption signal at 400 nm. Chitosan has one amine group on each of its glucose rings, which helps the membrane concentrating CGA (a weak acid) from aqueous sample solution. Therefore, the sensor shows high sensitivity in detecting CGA with a detection limit of 0.018 μg/mL. The sensor's response to CGA is reversible, because CGA permeation into/out of the polymer network is a reversible process. The effectiveness of the developed sensor for detecting CGA was verified though analyzing CGA in green coffee extract products. The analytical results obtained with the developed sensor agree well with results obtained with a traditional UV/Vis optical absorption spectrometric method. The effectiveness of the sensor for analyzing CGA in green coffee extract samples was also verified through standard addition and recovery experiment with obtained recovery rate ranging from 97 % to 100 %.
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Affiliation(s)
- Sean R McDonald
- Department of Chemistry and Physics, West Texas A&M University, WTAMU Box 60787, Canyon, TX, 79015, USA
| | - Shiquan Tao
- Department of Chemistry and Physics, West Texas A&M University, WTAMU Box 60787, Canyon, TX, 79015, USA.
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Amirghasemi F, Soleimani A, Bawarith S, Tabassum A, Morrel A, Mousavi MPS. FAST (Flexible Acetylcholine Sensing Thread): Real-Time Detection of Acetylcholine with a Flexible Solid-Contact Potentiometric Sensor. Bioengineering (Basel) 2023; 10:655. [PMID: 37370586 DOI: 10.3390/bioengineering10060655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 05/22/2023] [Accepted: 05/24/2023] [Indexed: 06/29/2023] Open
Abstract
Acetylcholine (ACh) is involved in memory and learning and has implications in neurodegenerative diseases; it is therefore important to study the dynamics of ACh in the brain. This work creates a flexible solid-contact potentiometric sensor for in vitro and in vivo recording of ACh in the brain and tissue homogenate. We fabricate this sensor using a 250 μm diameter cotton yarn coated with a flexible conductive ink and an ACh sensing membrane that contains a calix[4]arene ionophore. The exposed ion-to-electron transducer was sealed with a 2.5 μm thick Parylene C coating to maintain the flexibility of the sensor. The resulting diameter of the flexible ACh sensing thread (FAST) was 400 μm. The FAST showed a linear response range from 1.0 μM to 10.0 mM in deionized water, with a near-Nernstian slope of 56.11 mV/decade and a limit of detection of 2.6 μM. In artificial cerebrospinal fluid, the limit of detection increased to 20 μM due to the background signal of ionic content of the cerebrospinal fluid. The FAST showed a signal stability of 226 μV/h over 24 h. We show that FAST can measure ACh dynamics in sheep brain tissue and sheep brain homogenate after ACh spiking. FAST is the first flexible electrochemical sensor for monitoring ACh dynamics in the brain.
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Affiliation(s)
- Farbod Amirghasemi
- Alfred E. Mann Department of Biomedical Engineering, Viterbi School of Engineering, University of Southern California, Los Angeles, CA 90089, USA
| | - Ali Soleimani
- Alfred E. Mann Department of Biomedical Engineering, Viterbi School of Engineering, University of Southern California, Los Angeles, CA 90089, USA
| | - Shahd Bawarith
- Alfred E. Mann Department of Biomedical Engineering, Viterbi School of Engineering, University of Southern California, Los Angeles, CA 90089, USA
| | - Asna Tabassum
- Alfred E. Mann Department of Biomedical Engineering, Viterbi School of Engineering, University of Southern California, Los Angeles, CA 90089, USA
| | - Alayne Morrel
- Alfred E. Mann Department of Biomedical Engineering, Viterbi School of Engineering, University of Southern California, Los Angeles, CA 90089, USA
| | - Maral P S Mousavi
- Alfred E. Mann Department of Biomedical Engineering, Viterbi School of Engineering, University of Southern California, Los Angeles, CA 90089, USA
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Min J, Tu J, Xu C, Lukas H, Shin S, Yang Y, Solomon SA, Mukasa D, Gao W. Skin-Interfaced Wearable Sweat Sensors for Precision Medicine. Chem Rev 2023; 123:5049-5138. [PMID: 36971504 PMCID: PMC10406569 DOI: 10.1021/acs.chemrev.2c00823] [Citation(s) in RCA: 82] [Impact Index Per Article: 82.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
Wearable sensors hold great potential in empowering personalized health monitoring, predictive analytics, and timely intervention toward personalized healthcare. Advances in flexible electronics, materials science, and electrochemistry have spurred the development of wearable sweat sensors that enable the continuous and noninvasive screening of analytes indicative of health status. Existing major challenges in wearable sensors include: improving the sweat extraction and sweat sensing capabilities, improving the form factor of the wearable device for minimal discomfort and reliable measurements when worn, and understanding the clinical value of sweat analytes toward biomarker discovery. This review provides a comprehensive review of wearable sweat sensors and outlines state-of-the-art technologies and research that strive to bridge these gaps. The physiology of sweat, materials, biosensing mechanisms and advances, and approaches for sweat induction and sampling are introduced. Additionally, design considerations for the system-level development of wearable sweat sensing devices, spanning from strategies for prolonged sweat extraction to efficient powering of wearables, are discussed. Furthermore, the applications, data analytics, commercialization efforts, challenges, and prospects of wearable sweat sensors for precision medicine are discussed.
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Affiliation(s)
- Jihong Min
- Andrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California, 91125, USA
| | - Jiaobing Tu
- Andrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California, 91125, USA
| | - Changhao Xu
- Andrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California, 91125, USA
| | - Heather Lukas
- Andrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California, 91125, USA
| | - Soyoung Shin
- Andrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California, 91125, USA
| | - Yiran Yang
- Andrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California, 91125, USA
| | - Samuel A. Solomon
- Andrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California, 91125, USA
| | - Daniel Mukasa
- Andrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California, 91125, USA
| | - Wei Gao
- Andrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California, 91125, USA
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Ong V, Cortez NR, Xu Z, Amirghasemi F, Abd El-Rahman MK, Mousavi MPS. An Accessible Yarn-Based Sensor for In-Field Detection of Succinylcholine Poisoning. CHEMOSENSORS 2023; 11:175. [DOI: 10.3390/chemosensors11030175] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Succinylcholine (SUX) is a clinical anesthetic that induces temporary paralysis and is degraded by endogenous enzymes within the body. In high doses and without respiratory support, it results in rapid and untraceable death by asphyxiation. A potentiometric thread-based method was developed for the in-field and rapid detection of SUX for forensic use. We fabricated the first solid-contact SUX ion-selective electrodes from cotton yarn, a carbon black ink, and a polymeric ion-selective membrane. The electrodes could selectively measure SUX in a linear range of 1 mM to 4.3 μM in urine, with a Nernstian slope of 27.6 mV/decade. Our compact and portable yarn-based SUX sensors achieved 94.1% recovery at low concentrations, demonstrating feasibility in real-world applications. While other challenges remain, the development of a thread-based ion-selective electrode for SUX detection shows that it is possible to detect this poison in urine and paves the way for other low-cost, rapid forensic diagnostic devices.
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Affiliation(s)
- Victor Ong
- Department of Biomedical Engineering, University of Southern California, 1042 Downey Way, Los Angeles, CA 90089, USA
| | - Nicholas R. Cortez
- Department of Biological Sciences, University of Southern California, Allan Hancock Foundation Building, Los Angeles, CA 90089, USA
| | - Ziru Xu
- Department of Biomedical Engineering, University of Southern California, 1042 Downey Way, Los Angeles, CA 90089, USA
| | - Farbod Amirghasemi
- Department of Biomedical Engineering, University of Southern California, 1042 Downey Way, Los Angeles, CA 90089, USA
| | - Mohamed K. Abd El-Rahman
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Kasr-El Aini Street, Cairo 11562, Egypt
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA 02138, USA
| | - Maral P. S. Mousavi
- Department of Biomedical Engineering, University of Southern California, 1042 Downey Way, Los Angeles, CA 90089, USA
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Hussein OG, Ahmed DA, Abdelkawy M, Rezk MR, Mahmoud AM, Rostom Y. Novel solid-contact ion-selective electrode based on a polyaniline transducer layer for determination of alcaftadine in biological fluid. RSC Adv 2023; 13:7645-7655. [PMID: 36908536 PMCID: PMC9993128 DOI: 10.1039/d3ra00597f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Accepted: 03/02/2023] [Indexed: 03/11/2023] Open
Abstract
Fabrication of a novel ion selective electrode for determining alcaftadine was achieved. The glassy carbon electrode (GCE) was utilized as a substrate in fabrication of an electrochemical sensor containing polyaniline (PANI) as an ion-to-electron transducer layer. A PVC polymeric matrix and nitrophenyl-octyl-ether were employed in designing the ion-sensing membrane (ISM). Potential stability was improved and minimization of electrical signal drift was achieved for inhibition of water layer formation at the electrode interface. Potential stability was achieved by inclusion of PANI between the electronic substrate and the ion-sensing membrane. The sensor's performance was evaluated following IUPAC recommendations. The sensor dynamic linear range was from 1.0 × 10-2 to 1.0 × 10-6 mol L-1 and it had a 6.3 × 10-7 mol L-1 detection limit. The selectivity and capabilities of the formed alcaftadine sensor were tested in the presence of its pharmaceutical formulation excipients as well as its degradation products. Additionally, the sensor was capable of quantifying the studied drug in a rabbit aqueous humor. Method's greenness profile was evaluated by the means of Analytical Greenness (AGREE) metric assessment tool.
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Affiliation(s)
- Ola G Hussein
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Future University in Egypt Cairo Egypt
| | - Dina A Ahmed
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Future University in Egypt Cairo Egypt
| | - Mohamed Abdelkawy
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University Kasr El-Aini Street Cairo 11562 Egypt
| | - Mamdouh R Rezk
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University Kasr El-Aini Street Cairo 11562 Egypt
| | - Amr M Mahmoud
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University Kasr El-Aini Street Cairo 11562 Egypt
| | - Yasmin Rostom
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University Kasr El-Aini Street Cairo 11562 Egypt
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Soares RRA, Hjort RG, Pola CC, Jing D, Cecon VS, Claussen JC, Gomes CL. Ion-selective electrodes based on laser-induced graphene as an alternative method for nitrite monitoring. Mikrochim Acta 2023; 190:43. [PMID: 36595104 DOI: 10.1007/s00604-022-05615-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 12/05/2022] [Indexed: 01/04/2023]
Abstract
Nitrite is an important food additive for cured meats; however, high nitrite levels pose adverse health effects to humans. Hence, monitoring nitrite concentration is critical to comply with limits imposed by regulatory agencies. Laser-induced graphene (LIG) has proven to be a scalable manufacturing alternative to produce high-performance electrochemical transducers for sensors. Herein, we expand upon initial LIG studies by fabricating hydrophilic and hydrophobic LIG that are subsequently converted into ion-selective sensors to monitor nitrite in food samples with comparable performance to the standard photometric method (Griess method). The hydrophobic LIG resulted in an ion-selective electrode with improved potential stability due partly to a decrease in the water layer between the electrode and the nitrite poly(vinyl) chloride-based ion-selective membrane. These resultant nitrite ion-selective sensors displayed Nernstian response behavior with a sensitivity of 59.5 mV dec-1, a detection limit of 0.3 ± 0.1 mg L-1 (mean ± standard deviation), and a broad linear sensing range from 10-5 to 10-1 M, which was significantly larger than currently published nitrite methods. Nitrite levels were determined directly in food extract samples of sausage, ham, and bacon for 5 min. These sensor metrics are significant as regulatory agencies limit nitrite levels up to 200 mg L-1 in finished products to reduce the potential formation of nitrosamine (carcinogenic compound). These results demonstrate the versatility of LIG as a platform for ion-selective-LIG sensors and simple, efficient, and scalable electrochemical sensing in general while demonstrating a promising alternative to monitor nitrite levels in food products ensuring regulatory compliance.
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Affiliation(s)
- Raquel R A Soares
- Department of Mechanical Engineering, Iowa State University, Ames, IA, 50011, USA
| | - Robert G Hjort
- Department of Mechanical Engineering, Iowa State University, Ames, IA, 50011, USA
| | - Cícero C Pola
- Department of Mechanical Engineering, Iowa State University, Ames, IA, 50011, USA
| | - Dapeng Jing
- Materials Analysis and Research Laboratory, Iowa State University, Ames, IA, 50011, USA
| | - Victor S Cecon
- Department of Food Science and Human Nutrition, Iowa State University, Ames, IA, 50011, USA
| | - Jonathan C Claussen
- Department of Mechanical Engineering, Iowa State University, Ames, IA, 50011, USA
| | - Carmen L Gomes
- Department of Mechanical Engineering, Iowa State University, Ames, IA, 50011, USA.
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Soliman RM, Rostom Y, Mahmoud AM, Fayez YM, Mostafa NM, Monir HH. Novel Fabricated Potentiometric Sensors for Selective Determination of Carbinoxamine with Different Greenness Evaluation Perspectives. Microchem J 2023. [DOI: 10.1016/j.microc.2022.108381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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13
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Dusiło K, Wojcieszek J, Pepłowski A, Kuczak J, Górski Ł. Silver-ligand complex as an additive in polymeric membranes of screen-printed fluoride-selective electrodes. Microchem J 2022. [DOI: 10.1016/j.microc.2022.108129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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14
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Solid-contact polymeric membrane ion-selective electrodes based on electrodeposited NiCo2S4 nanosheet arrays. Talanta 2022; 251:123797. [DOI: 10.1016/j.talanta.2022.123797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 06/30/2022] [Accepted: 07/26/2022] [Indexed: 11/19/2022]
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15
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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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16
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All-Solid-State Potentiometric Platforms Modified with a Multi-Walled Carbon Nanotubes for Fluoxetine Determination. MEMBRANES 2022; 12:membranes12050446. [PMID: 35629772 PMCID: PMC9144631 DOI: 10.3390/membranes12050446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 04/07/2022] [Accepted: 04/08/2022] [Indexed: 01/25/2023]
Abstract
Novel cost-effective screen-printed potentiometric platforms for simple, fast, and accurate assessment of Fluoxetine (FLX) were designed and characterized. The potentiometric platforms integrate both the FLX sensor and the reference Ag/AgCl electrode. The sensors were based on the use of 4′-nitrobenzo-15-crown-5 (ionophore I), dibenzo-18-crown-6 (ionophore II), and 2-hydroxypropyl-β-cyclodextrin (2-HP-β-CD) (ionophore III) as neutral carriers within a plasticized PVC matrix. Multiwalled carbon nanotubes (MWCNTs) were used as a lipophilic ion-to-electron transducing material and sodium tetrakis [3,5-bis(trifluoromethyl)phenyl] borate (NaTFPB) was used as an anionic excluder. The presented platforms revealed near-Nernstian potentiometric response with slopes of 56.2 ± 0.8, 56.3 ± 1.7 and 64.4 ± 0.2 mV/decade and detection limits of 5.2 × 10−6, 4.7 × 10−6 and 2.0 × 10−7 M in 10 mM Tris buffer solution, pH 7 for sensors based on ionophore I, II, and III, respectively. All measurements were carried out in 10 mM tris buffer solution at pH 7.0. The interfacial capacitance before and after insertion of the MWCNTs layer was evaluated for the presented sensors using the reverse-current chronopotentiometry. The sensors were introduced for successful determination of FLX drug in different pharmaceutical dosage forms. The results were compared with those obtained by the standard HPLC method. Recovery values were calculated after spiking fixed concentrations of FLX in different serum samples. The presented platforms can be potentially manufacturable at large scales and provide a portable, rapid, disposable, and cost-effective analytical tool for measuring FLX.
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17
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Fan Y, Qian X, Wang X, Funk T, Herman B, McCutcheon JR, Li B. Enhancing long-term accuracy and durability of wastewater monitoring using electrosprayed ultra-thin solid-state ion selective membrane sensors. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2021.119997] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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18
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Li Y, Li J, Qin W. All-Solid-State Polymeric Membrane Ion-Selective Electrodes Based on NiCo 2S 4 as a Solid Contact. Anal Chem 2022; 94:3574-3580. [PMID: 35175037 DOI: 10.1021/acs.analchem.1c04748] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The performance criteria for the design of all-solid-state ion-selective electrodes mainly include high electrode-to-electrode reproducibility and a low potential drift. Here, we introduce nickel cobalt sulfide (NiCo2S4) as a solid contact for ion-to-electron transduction based on multiple redox couples. NiCo2S4 materials with different morphologies can be prepared through a facile hydrothermal/solvothermal method. A NiCo2S4-based solid-contact Ca2+-ISE has been developed, which exhibits a Nernstian slope of 27.5 ± 0.2 mV/dec in the activity range from 1.0 × 10-6 to 2.9 × 10-2 M with a detection limit of 5.0 × 10-7 M. A variation of the standard potential E° for eight individual solid-contact electrodes can be obtained as low as 0.35 mV. Due to the synergistic effect of cobalt and nickel ions in the ternary sulfide, an excellent redox capacitance (565 μF) of the buried solid contact coated with the ion-selective membrane can be achieved and is much larger than those obtained from other redox solid-contact materials reported so far, thus yielding a high potential stability of 2.2 ± 0.4 μV/h. In addition, the NiCo2S4-based solid-contact Ca2+-ISE shows a reduced water layer at the sensing membrane/NiCo2S4 interface and provides an excellent resistance to the interferences from light, O2, and CO2. The proposed strategy utilizing NiCo2S4 as a solid contact is a promising alternative for the fabrication of calibration-free ASS-ISEs.
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Affiliation(s)
- Yanhong Li
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Chinese Academy of Sciences (CAS); Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai Institute of Coastal Zone Research (YIC), Yantai 264003, Shandong, P.R. China.,University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Jinghui Li
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Chinese Academy of Sciences (CAS); Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai Institute of Coastal Zone Research (YIC), Yantai 264003, Shandong, P.R. China
| | - Wei Qin
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Chinese Academy of Sciences (CAS); Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai Institute of Coastal Zone Research (YIC), Yantai 264003, Shandong, P.R. China.,Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology, Qingdao 266237, Shandong, P.R. China.,Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, Shandong, P.R. China
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19
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Chen B, Johnson ZT, Sanborn D, Hjort RG, Garland NT, Soares RRA, Van Belle B, Jared N, Li J, Jing D, Smith EA, Gomes CL, Claussen JC. Tuning the Structure, Conductivity, and Wettability of Laser-Induced Graphene for Multiplexed Open Microfluidic Environmental Biosensing and Energy Storage Devices. ACS NANO 2022; 16:15-28. [PMID: 34812606 DOI: 10.1021/acsnano.1c04197] [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] [Indexed: 05/02/2023]
Abstract
The integration of microfluidics and electrochemical cells is at the forefront of emerging sensors and energy systems; however, a fabrication scheme that can create both the microfluidics and electrochemical cells in a scalable fashion is still lacking. We present a one-step, mask-free process to create, pattern, and tune laser-induced graphene (LIG) with a ubiquitous CO2 laser. The laser parameters are adjusted to create LIG with different electrical conductivity, surface morphology, and surface wettability without the need for postchemical modification. Such definitive control over material properties enables the creation of LIG-based integrated open microfluidics and electrochemical sensors that are capable of dividing a single water sample along four multifurcating paths to three ion selective electrodes (ISEs) for potassium (K+), nitrate (NO3-), and ammonium (NH4+) monitoring and to an enzymatic pesticide sensor for organophosphate pesticide (parathion) monitoring. The ISEs displayed near-Nernstian sensitivities and low limits of detection (LODs) (10-5.01 M, 10-5.07 M, and 10-4.89 M for the K+, NO3-, and NH4+ ISEs, respectively) while the pesticide sensor exhibited the lowest LOD (15.4 pM) for an electrochemical parathion sensor to date. LIG was also specifically patterned and tuned to create a high-performance electrochemical micro supercapacitor (MSC) capable of improving the power density by 2 orders of magnitude compared to a Li-based thin-film battery and the energy density by 3 orders of magnitude compared to a commercial electrolytic capacitor. Hence, this tunable fabrication approach to LIG is expected to enable a wide range of real-time, point-of-use health and environmental sensors as well as energy storage/harvesting modules.
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Affiliation(s)
- Bolin Chen
- Department of Mechanical Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Zachary T Johnson
- Department of Mechanical Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Delaney Sanborn
- Department of Mechanical Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Robert G Hjort
- Department of Mechanical Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Nate T Garland
- Department of Mechanical Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Raquel R A Soares
- Department of Mechanical Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Bryan Van Belle
- Department of Mechanical Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Nathan Jared
- Department of Mechanical Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Jingzhe Li
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
- U.S. Department of Energy, The Ames Laboratory, Ames, Iowa 50011, United States
| | - Dapeng Jing
- U.S. Department of Energy, The Ames Laboratory, Ames, Iowa 50011, United States
| | - Emily A Smith
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
- U.S. Department of Energy, The Ames Laboratory, Ames, Iowa 50011, United States
| | - Carmen L Gomes
- Department of Mechanical Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Jonathan C Claussen
- Department of Mechanical Engineering, Iowa State University, Ames, Iowa 50011, United States
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20
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Rousseau CR, Honig ML, Bühlmann P. Hydrogels Doped with Redox Buffers as Transducers for Ion-Selective Electrodes. Anal Chem 2021; 94:1143-1150. [PMID: 34932309 DOI: 10.1021/acs.analchem.1c04264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Solid-contact ion-selective electrodes (ISEs) with an unintentional water layer between the sensing membrane and underlying electron conductor are well known to suffer from potential drift caused by the instability of the phase boundary potential between the sensing membrane and the water layer with its uncontrolled ionic composition. The reproducibility and long-term emf stability of ISEs with a miniaturized inner filling solution comprising a hydrogel and a hydrophilic electrolyte have not been studied as thoroughly. Here, such devices are discussed with a view to electrode-to-electrode reproducibility, using both hydrophilic ion-exchange and plasticized PVC membranes, along with a hydrophilic redox buffer composed of ferrocyanide and ferricyanide to control the potential between the hydrogel and the underlying electron conductor. With plasticized PVC sensing membranes, these electrodes showed an E0 reproducibility of ±1.1 mV or better, while with hydrophilic ion-exchange membranes, this variability was slightly larger. Long-term drifts were also assessed with both membranes, and the effect of osmotic pressure on drift was shown to be insignificant for the PVC membranes and very small at most for the hydrophilic membranes.
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Affiliation(s)
- Celeste R Rousseau
- Department of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
| | - Madeline L Honig
- Department of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
| | - Philippe Bühlmann
- Department of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
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21
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Liao C, Zhong L, Tang Y, Sun Z, Lin K, Xu L, Lyu Y, He D, He Y, Ma Y, Bao Y, Gan S, Niu L. Solid-Contact Potentiometric Anion Sensing Based on Classic Silver/Silver Insoluble Salts Electrodes without Ion-Selective Membrane. MEMBRANES 2021; 11:959. [PMID: 34940460 PMCID: PMC8707216 DOI: 10.3390/membranes11120959] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 11/27/2021] [Accepted: 11/28/2021] [Indexed: 12/27/2022]
Abstract
Current solid potentiometric ion sensors mostly rely on polymeric-membrane-based, solid-contact, ion-selective electrodes (SC-ISEs). However, anion sensing has been a challenge with respect to cations due to the rareness of anion ionophores. Classic metal/metal insoluble salt electrodes (such as Ag/AgCl) without an ion-selective membrane (ISM) offer an alternative. In this work, we first compared the two types of SC-ISEs of Cl- with/without the ISM. It is found that the ISM-free Ag/AgCl electrode discloses a comparable selectivity regarding organic chloride ionophores. Additionally, the electrode exhibits better comprehensive performances (stability, reproducibility, and anti-interference ability) than the ISM-based SC-ISE. In addition to Cl-, other Ag/AgX electrodes also work toward single and multi-valent anions sensing. Finally, a flexible Cl- sensor was fabricated for on-body monitoring the concentration of sweat Cl- to illustrate a proof-of-concept application in wearable anion sensors. This work re-emphasizes the ISM-free SC-ISEs for solid anion sensing.
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Affiliation(s)
- Chunxian Liao
- Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China; (C.L.); (L.Z.); (Y.T.); (Z.S.); (K.L.); (L.X.); (Y.L.); (D.H.); (Y.H.); (Y.M.); (Y.B.); (L.N.)
| | - Lijie Zhong
- Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China; (C.L.); (L.Z.); (Y.T.); (Z.S.); (K.L.); (L.X.); (Y.L.); (D.H.); (Y.H.); (Y.M.); (Y.B.); (L.N.)
| | - Yitian Tang
- Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China; (C.L.); (L.Z.); (Y.T.); (Z.S.); (K.L.); (L.X.); (Y.L.); (D.H.); (Y.H.); (Y.M.); (Y.B.); (L.N.)
- School of Civil Engineering, Guangzhou University, Guangzhou 510006, China
| | - Zhonghui Sun
- Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China; (C.L.); (L.Z.); (Y.T.); (Z.S.); (K.L.); (L.X.); (Y.L.); (D.H.); (Y.H.); (Y.M.); (Y.B.); (L.N.)
| | - Kanglong Lin
- Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China; (C.L.); (L.Z.); (Y.T.); (Z.S.); (K.L.); (L.X.); (Y.L.); (D.H.); (Y.H.); (Y.M.); (Y.B.); (L.N.)
| | - Longbin Xu
- Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China; (C.L.); (L.Z.); (Y.T.); (Z.S.); (K.L.); (L.X.); (Y.L.); (D.H.); (Y.H.); (Y.M.); (Y.B.); (L.N.)
- School of Civil Engineering, Guangzhou University, Guangzhou 510006, China
| | - Yan Lyu
- Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China; (C.L.); (L.Z.); (Y.T.); (Z.S.); (K.L.); (L.X.); (Y.L.); (D.H.); (Y.H.); (Y.M.); (Y.B.); (L.N.)
- School of Civil Engineering, Guangzhou University, Guangzhou 510006, China
| | - Dequan He
- Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China; (C.L.); (L.Z.); (Y.T.); (Z.S.); (K.L.); (L.X.); (Y.L.); (D.H.); (Y.H.); (Y.M.); (Y.B.); (L.N.)
| | - Ying He
- Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China; (C.L.); (L.Z.); (Y.T.); (Z.S.); (K.L.); (L.X.); (Y.L.); (D.H.); (Y.H.); (Y.M.); (Y.B.); (L.N.)
| | - Yingming Ma
- Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China; (C.L.); (L.Z.); (Y.T.); (Z.S.); (K.L.); (L.X.); (Y.L.); (D.H.); (Y.H.); (Y.M.); (Y.B.); (L.N.)
| | - Yu Bao
- Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China; (C.L.); (L.Z.); (Y.T.); (Z.S.); (K.L.); (L.X.); (Y.L.); (D.H.); (Y.H.); (Y.M.); (Y.B.); (L.N.)
| | - Shiyu Gan
- Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China; (C.L.); (L.Z.); (Y.T.); (Z.S.); (K.L.); (L.X.); (Y.L.); (D.H.); (Y.H.); (Y.M.); (Y.B.); (L.N.)
| | - Li Niu
- Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China; (C.L.); (L.Z.); (Y.T.); (Z.S.); (K.L.); (L.X.); (Y.L.); (D.H.); (Y.H.); (Y.M.); (Y.B.); (L.N.)
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22
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Liang T, Jiang N, Zhou S, Wang X, Xu Y, Wu C, Kirsanov D, Legin A, Wan H, Wang P. Multiplexed all-solid-state ion-sensitive light-addressable potentiometric sensor (ISLAPS) system based on silicone-rubber for physiological ions detection. Anal Chim Acta 2021; 1179:338603. [PMID: 34535249 DOI: 10.1016/j.aca.2021.338603] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 04/14/2021] [Accepted: 04/30/2021] [Indexed: 10/21/2022]
Abstract
Light-addressable potentiometric sensor (LAPS) has been widely used in biomedical applications since its advent. As a member of the potentiometric sensors, ion-sensitive LAPS (ISLAPS) can be obtained by modifying ion selective sensing membrane on the sensor surface. Compared with the conventional ion-selective electrodes (ISEs) with liquid contact, the all-solid-state ISEs have more advantages such as easy maintenance, more convenient for miniaturization and practical applications. However, the commonly used ion-sensitive membrane (ISM) matrix like PVC has many limitations such as poor adhesion to silicone-based sensor and easy overflow of the plasticizer from the membrane. In this work, LAPS was combined with a variety of ionophore-doped all-solid-state silicone-rubber ISMs for the first time, to establish a program-controlled multiplexed ISLAPS system for physiological ions (Na+, K+, Ca2+ and H+) detection. The silicone-rubber ISMs have better adhesion to silicon-based sensors without containing plasticizers, which can avoid the plasticizer pollution and improve the long-term stability. A layer of poly(3-octylthiophene-2,5-diyl) (P3OT) was pre-modified on the sensor surface to inhibit the formation of an aqueous layer and improve the sensor lifetime. With the aid of a translation stage, the light spot automatically illuminated the detection sites in sequence, and the response of the four ions could be obtained in one measurement within 1 min. The proposed multiplexed ISLAPS has good sensitivity with micromolar limit of detection (LOD), good selectivity and long-term stability (more than 3 months). The results of the real Dulbecco's Modified Eagle Medium (DMEM) sample detection proved that the ISLAPS system can be used for the physiological ions detection, and is promising to realize a multi-parameter microphysiometer.
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Affiliation(s)
- Tao Liang
- Biosensor National Special Laboratory, Key Laboratory for Biomedical Engineering of Ministry of Education, Department of Biomedical Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Nan Jiang
- Biosensor National Special Laboratory, Key Laboratory for Biomedical Engineering of Ministry of Education, Department of Biomedical Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Shuqi Zhou
- Biosensor National Special Laboratory, Key Laboratory for Biomedical Engineering of Ministry of Education, Department of Biomedical Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Xinyi Wang
- Biosensor National Special Laboratory, Key Laboratory for Biomedical Engineering of Ministry of Education, Department of Biomedical Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Yingke Xu
- Biosensor National Special Laboratory, Key Laboratory for Biomedical Engineering of Ministry of Education, Department of Biomedical Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Chunsheng Wu
- Institute of Medical Engineering, School of Basic Medical Sciences, Xi'an Jiaotong University, Xi'an, 710061, China
| | - Dmitry Kirsanov
- Institute of Chemistry, Mendeleev Center, St. Petersburg State University, St. Petersburg, 199034, Russia
| | - Andrey Legin
- Institute of Chemistry, Mendeleev Center, St. Petersburg State University, St. Petersburg, 199034, Russia
| | - Hao Wan
- Biosensor National Special Laboratory, Key Laboratory for Biomedical Engineering of Ministry of Education, Department of Biomedical Engineering, Zhejiang University, Hangzhou, 310027, China.
| | - Ping Wang
- Biosensor National Special Laboratory, Key Laboratory for Biomedical Engineering of Ministry of Education, Department of Biomedical Engineering, Zhejiang University, Hangzhou, 310027, China.
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23
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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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24
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Improving the stability of Pb2+ ion-selective electrodes by using 3D polyaniline nanowire arrays as the inner solid-contact transducer. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138414] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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25
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All solid-state miniaturized potentiometric sensors for flunitrazepam determination in beverages. Mikrochim Acta 2021; 188:192. [PMID: 34008054 DOI: 10.1007/s00604-021-04851-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 05/10/2021] [Indexed: 01/12/2023]
Abstract
Flunitrazepam is one of the frequently used hypnotic drugs to incapacitate victims for sexual assault. Appropriate diagnostic tools should be available to victims regarding the growing concern about "date-rape drugs" and their adverse impact on society. Miniaturized screen-printed potentiometric sensors offer crucial point-of-care devices that alleviate this serious problem. In this study, all solid-state screen-printed potentiometric flunitrazepam sensors have been designed. The paper device was printed with silver and carbon ink. Formation of an aqueous layer in the interface between carbon-conducting material and ion-sensing membrane nevertheless poses low reproducibility in the solid-contact electrodes. Accordingly, poly(3,4-ethylenedioxythiophene) (PEDT) nano-dispersion was applied as a conducting hydrophobic polymer on the electrode surface to curb water accumulation. Conditioning of ion-sensing membrane in the vicinity of reference membrane has been considered carefully using special protocol. Electrochemical characteristics of the proposed PEDT-based sensor were calculated and compared favorably to PEDT-free one. The miniaturized device was successfully used for the determination of flunitrazepam in carbonated soft drinks, energy drink, and malt beverage. Statistical comparison between the proposed sensor and official method revealed no significant difference. Nevertheless, the proposed sensor provides simple and user-friendly diagnostic tool with less equipment for on-site determination of flunitrazepam.
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27
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Kozma J, Papp S, Gyurcsányi RE. Solid-contact ion-selective electrodes based on ferrocene-functionalized multi-walled carbon nanotubes. Electrochem commun 2021. [DOI: 10.1016/j.elecom.2020.106903] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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28
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Ding R, Cheong YH, Ahamed A, Lisak G. Heavy Metals Detection with Paper-Based Electrochemical Sensors. Anal Chem 2021; 93:1880-1888. [DOI: 10.1021/acs.analchem.0c04247] [Citation(s) in RCA: 76] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Ruiyu Ding
- College of Engineering, School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
- Nanyang Environment and Water Research Institute, Residues and Resource Reclamation Center, 1 Cleantech Loop, Cleantech, Singapore 637141, Singapore
| | - Yi Heng Cheong
- College of Engineering, School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
- Nanyang Environment and Water Research Institute, Residues and Resource Reclamation Center, 1 Cleantech Loop, Cleantech, Singapore 637141, Singapore
| | - Ashiq Ahamed
- Nanyang Environment and Water Research Institute, Residues and Resource Reclamation Center, 1 Cleantech Loop, Cleantech, Singapore 637141, Singapore
- Laboratory of Molecular Science and Engineering, Johan Gadolin Process Chemistry Centre, Åbo Akademi University, FI-20500 Turku, 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, Residues and Resource Reclamation Center, 1 Cleantech Loop, Cleantech, Singapore 637141, Singapore
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Krata AA, Stelmach E, Wojciechowski M, Bulska E, Maksymiuk K, Michalska A. Insights into Primary Ion Exchange between Ion-Selective Membranes and Solution. From Altering Natural Isotope Ratios to Isotope Dilution Inductively Coupled Plasma Mass Spectrometry Studies. ACS Sens 2020; 5:3930-3938. [PMID: 33301318 PMCID: PMC7771020 DOI: 10.1021/acssensors.0c01585] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Although ion-selective electrodes have been routinely used for decades now, there are still gaps in experimental evidence regarding how these sensors operate. This especially applies to the exchange of primary ions occurring for systems already containing analyte ions from the pretreatment step. Herein, for the first time, we present an insight into this process looking at the effect of altered ratios of naturally occurring analyte isotopes and achieving isotopic equilibrium. Benefiting from the same chemical properties of all isotopes of analyte ions and spatial resolution offered by laser ablation and inductively coupled plasma mass spectrometry, obtaining insights into primary ion diffusion in the preconditioned membrane is possible. For systems that have reached isotopic equilibrium in the membrane through ion exchange and between the membrane phase and the sample, quantification of primary ions in the membrane is possible using an isotope dilution approach for a heterogeneous system (membrane-liquid sample). Experimental results obtained for silver-selective membrane show that the primary ion diffusion coefficient in the preconditioned membrane is close to (6 ± 1) × 10-9 cm2/s, being somewhat lower compared to the previously reported values for other cations. Diffusion of ions in the membrane is the rate limiting step in achieving isotopic exchange equilibrium between the ion-selective membrane phase and sample solution. On the contrary to previous reports, quantification of silver present in the membrane clearly shows that contact of the membrane with silver nitrate solution of concentration 10-3 M leads to pronounced accumulation of silver ions in the membrane, reaching almost 150% of ion exchanger amount. The magnitude of this effect increases for higher concentration of the electrolyte in the solution.
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Affiliation(s)
- Agnieszka Anna Krata
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
- Biological and Chemical Research Centre, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
| | - Emilia Stelmach
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
| | - Marcin Wojciechowski
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
- Biological and Chemical Research Centre, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
| | - Ewa Bulska
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
- Biological and Chemical Research Centre, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
| | - Krzysztof Maksymiuk
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
| | - Agata Michalska
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
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Fan Y, Huang Y, Linthicum W, Liu F, Beringhs AO, Dang Y, Xu Z, Chang SY, Ling J, Huey BD, Suib SL, Ma AWK, Gao PX, Lu X, Lei Y, Shaw MT, Li B. Toward Long-Term Accurate and Continuous Monitoring of Nitrate in Wastewater Using Poly(tetrafluoroethylene) (PTFE)-Solid-State Ion-Selective Electrodes (S-ISEs). ACS Sens 2020; 5:3182-3193. [PMID: 32933249 DOI: 10.1021/acssensors.0c01422] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Long-term accurate and continuous monitoring of nitrate (NO3-) concentration in wastewater and groundwater is critical for determining treatment efficiency and tracking contaminant transport. Current nitrate monitoring technologies, including colorimetric, chromatographic, biometric, and electrochemical sensors, are not feasible for continuous monitoring. This study addressed this challenge by modifying NO3- solid-state ion-selective electrodes (S-ISEs) with poly(tetrafluoroethylene) (PTFE, (C2F4)n). The PTFE-loaded S-ISE membrane polymer matrix reduces water layer formation between the membrane and electrode/solid contact, while paradoxically, the even more hydrophobic PTFE-loaded S-ISE membrane prevents bacterial attachment despite the opposite approach of hydrophilic modifications in other antifouling sensor designs. Specifically, an optimal ratio of 5% PTFE in the S-ISE polymer matrix was determined by a series of characterization tests in real wastewater. Five percent of PTFE alleviated biofouling to the sensor surface by enhancing the negative charge (-4.5 to -45.8 mV) and lowering surface roughness (Ra: 0.56 ± 0.02 nm). It simultaneously mitigated water layer formation between the membrane and electrode by increasing hydrophobicity (contact angle: 104°) and membrane adhesion and thus minimized the reading (mV) drift in the baseline sensitivity ("data drifting"). Long-term accuracy and durability of 5% PTFE-loaded NO3- S-ISEs were well demonstrated in real wastewater over 20 days, an improvement over commercial sensor longevity.
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Affiliation(s)
- Yingzheng Fan
- Department of Civil & Environmental Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Yuankai Huang
- Department of Civil & Environmental Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Will Linthicum
- Department of Materials Science & Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Fangyuan Liu
- Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States
| | | | - Yanliu Dang
- Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Zhiheng Xu
- Department of Civil & Environmental Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Shing-Yun Chang
- Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States
- Department of Chemical and Biomedical Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Jing Ling
- Department of Civil & Environmental Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Bryan D. Huey
- Department of Materials Science & Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Steven L. Suib
- Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Anson W. K. Ma
- Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States
- Department of Chemical and Biomedical Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Pu-Xian Gao
- Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Xiuling Lu
- School of Pharmacy, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Yu Lei
- Department of Chemical and Biomedical Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Montgomery T. Shaw
- Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Baikun Li
- Department of Civil & Environmental Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
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Kraikaew P, Sailapu SK, Bakker E. Rapid Constant Potential Capacitive Measurements with Solid-Contact Ion-Selective Electrodes Coupled to Electronic Capacitor. Anal Chem 2020; 92:14174-14180. [DOI: 10.1021/acs.analchem.0c03254] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Pitchnaree Kraikaew
- Department of Inorganic and Analytical Chemistry, University of Geneva, Quai Ernest-Ansermet 30, CH-1211 Geneva, Switzerland
| | - Sunil Kumar Sailapu
- Department of Inorganic and Analytical Chemistry, University of Geneva, Quai Ernest-Ansermet 30, CH-1211 Geneva, Switzerland
- Instituto de Microelectrónica de Barcelona, IMB-CNM (CSIC), C/del Til·lers, Campus UAB, 08193 Bellaterra, Barcelona, Spain
| | - Eric Bakker
- Department of Inorganic and Analytical Chemistry, University of Geneva, Quai Ernest-Ansermet 30, CH-1211 Geneva, Switzerland
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Liu K, Song Y, Song D, Liang R. Plasticizer-free polymer membrane potentiometric sensors based on molecularly imprinted polymers for determination of neutral phenols. Anal Chim Acta 2020; 1121:50-56. [PMID: 32493589 DOI: 10.1016/j.aca.2020.04.074] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 04/22/2020] [Accepted: 04/28/2020] [Indexed: 12/21/2022]
Abstract
Polymeric membrane potentiometric sensors based on molecularly imprinted polymers (MIPs) as the receptors have been successfully developed for detection of organic and biological species. However, it should be noted that all of the polymeric membrane matrices of these sensors developed so far are the plasticized poly(vinyl chloride) (PVC) membranes, which are usually suffered from undesired plasticizer leaching. Hence, for the first time, we describe a novel plasticizer-free MIP-based potentiometric sensor. A new copolymer, methyl methacrylate and 2-ethylhexyl acrylate (MMA-2-EHA), is synthesized and used as the sensing membrane matrix. By using neutral bisphenol A (BPA) as a model, the proposed plasticizer-free MIP sensor shows an excellent sensitivity and a good selectivity with a detection limit of 32 nM. Additionally, the proposed MMA-2-EHA-based MIP membrane exhibits lower cytotoxicity, higher hydrophobicity and better MIP dispersion ability compared to the classical plasticized PVC-based MIP sensing membrane. We believed that the new copolymer membrane-based MIP sensor can provide an appealing substitute for the traditional PVC membrane sensor in the development of polymeric membrane-based electrochemical and optical MIP sensors.
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Affiliation(s)
- Kaikai Liu
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, Shandong, 264003, PR China; School of Environmental and Material Engineering, Yantai University, Yantai, Shandong, 264005, PR China
| | - Yuehai Song
- School of Environmental and Material Engineering, Yantai University, Yantai, Shandong, 264005, PR China
| | - Dean Song
- The State Agriculture Ministry Laboratory of Quality & Safety Risk Assessment for Tobacco, Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, 266101, PR China.
| | - Rongning Liang
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, Shandong, 264003, PR China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, Shandong, 266071, PR China.
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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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34
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Kamel AH, Amr AEGE, Abdalla NS, El-Naggar M, Al-Omar MA, Alkahtani HM, Sayed AYA. Novel Solid-State Potentiometric Sensors Using Polyaniline (PANI) as A Solid-Contact Transducer for Flucarbazone Herbicide Assessment. Polymers (Basel) 2019; 11:polym11111796. [PMID: 31683994 PMCID: PMC6918223 DOI: 10.3390/polym11111796] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2019] [Revised: 10/14/2019] [Accepted: 10/23/2019] [Indexed: 11/19/2022] Open
Abstract
Novel potentiometric solid-contact ion-selective electrodes (SC/ISEs) based on molecularly imprinted polymers (MIPs) as sensory carriers (MIP/PANI/ISE) were prepared and characterized as potentiometric sensors for flucarbazone herbicide anion. However, aliquat S 336 was also studied as a charged carrier in the fabrication of Aliquat/PANI/ISEs for flucarbazone monitoring. The polyaniline (PANI) film was inserted between the ion-sensing membrane (ISM) and the electronic conductor glassy carbon substrate (GC). The sensors showed a noticeable response towards flucarbazone anions with slopes of −45.5 ± 1.3 (r2 = 0.9998) and −56.3 ± 1.5 (r2 = 0.9977) mV/decade over the range of 10−2–10−5, 10−2–10−4 M and detection limits of 5.8 × 10−6 and 8.5 × 10−6 M for MIP/PANI/ISE and Aliguat/PANI/ISE, respectively. The selectivity and long-term potential stability of all presented ISEs were investigated. The short-term potential and electrode capacitances were studied and evaluated using chronopotentiometry and electrochemical impedance spectrometry (EIS). The proposed ISEs were introduced for the direct measurement of flucarbazone herbicide in different soil samples sprayed with flucarbazone herbicide. The results agree well with the results obtained using the standard liquid chromatographic method (HPLC).
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Affiliation(s)
- Ayman H Kamel
- Department of Chemistry, Faculty of Science, Ain Shams University, Abbasia 11566, Cairo, Egypt.
| | - Abd El-Galil E Amr
- Pharmaceutical Chemistry Department, Drug Exploration & Development Chair (DEDC), College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia.
- Applied Organic Chemistry Department, National Research Center, Dokki 12622, Giza, Egypt.
| | - Nashwa S Abdalla
- Department of Chemistry, Faculty of Science, Ain Shams University, Abbasia 11566, Cairo, Egypt.
| | - Mohamed El-Naggar
- Chemistry Department, Faculty of Sciences, University of Sharjah, Sharjah 27272, UAE.
| | - Mohamed A Al-Omar
- Pharmaceutical Chemistry Department, Drug Exploration & Development Chair (DEDC), College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia.
| | - Hamad M Alkahtani
- Pharmaceutical Chemistry Department, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia.
| | - Ahmed Y A Sayed
- Pharmaceutical Chemistry Department, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia.
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35
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Ezzat S, A Ahmed M, E Amr AEG, A Al-Omar M, H Kamel A, Khalifa NM. Single-Piece All-Solid-State Potential Ion-Selective Electrodes Integrated with Molecularly Imprinted Polymers (MIPs) for Neutral 2,4-Dichlorophenol Assessment. MATERIALS (BASEL, SWITZERLAND) 2019; 12:E2924. [PMID: 31510026 PMCID: PMC6766229 DOI: 10.3390/ma12182924] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Revised: 09/02/2019] [Accepted: 09/03/2019] [Indexed: 01/13/2023]
Abstract
A novel single-piece all-solid-state ion-selective electrode (SC/ISE) based on carbon-screen printed is introduced. Polyaniline (PANI) is dissolved in a membrane cocktail that contains the same components used for making a conventional ion-selective polyvinyl chloride (PVC) matrix membrane. The membrane, having the PANI, is directly drop-casted on a carbon substrate (screen-printed-carbon electrode). PANI was added to act as an intermediary between the substrate and the membrane for the charge transfer process. Under non-equilibrium sensing mechanism, the sensors revealed high sensitivity towards 2,4-dichlorophenol (DCP) over the linearity range 0.47 to 13 µM and a detection limit 0.13 µm. The selectivity was measured by the modified separate solution method (MSSM) and showed good selectivity towards 2,4-DCP over the most commonly studied ions. All measurements were done in 30 mm Tris buffer solution at a pH 5.0. Using constant-current chronopotentiometry, the potential drift for the proposed electrodes was checked. Improvement in the potential stability of the SPE was observed after the addition of PANI in the sensing membrane as compared to the corresponding coated-wire electrode (membrane without PANI). The applicability of the sensor has been checked by measuring 2,4-DCP in different water samples and the results were compared with the standard HPLC method.
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Affiliation(s)
- Samar Ezzat
- Department of Chemistry, Faculty of Science, Ain Shams University, 11566 Cairo, Egypt.
- Chemistry Department, College for Women, Ain Shams University, Heliopolis, 11751 Cairo, Egypt.
| | - Mona A Ahmed
- Chemistry Department, College for Women, Ain Shams University, Heliopolis, 11751 Cairo, Egypt.
| | - Abd El-Galil E Amr
- Pharmaceutical Chemistry Department, Drug Exploration & Development Chair (DEDC), College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia.
- Applied Organic Chemistry Department, National Research Center, 12622 Giza, Egypt.
| | - Mohamed A Al-Omar
- Pharmaceutical Chemistry Department, Drug Exploration & Development Chair (DEDC), College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia.
| | - Ayman H Kamel
- Department of Chemistry, Faculty of Science, Ain Shams University, 11566 Cairo, Egypt.
| | - Nagy M Khalifa
- Pharmaceutical Chemistry Department, Drug Exploration & Development Chair (DEDC), College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia.
- Applied Organic Chemistry Department, National Research Center, 12622 Giza, Egypt.
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36
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Legner C, Kalwa U, Patel V, Chesmore A, Pandey S. Sweat sensing in the smart wearables era: Towards integrative, multifunctional and body-compliant perspiration analysis. SENSORS AND ACTUATORS A-PHYSICAL 2019. [DOI: 10.1016/j.sna.2019.07.020] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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37
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Graphdiyne oxide enhances the stability of solid contact-based ionselective electrodes for excellent in vivo analysis. Sci China Chem 2019. [DOI: 10.1007/s11426-019-9516-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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38
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Ali MA, Wang X, Chen Y, Jiao Y, Mahal NK, Moru S, Castellano MJ, Schnable JC, Schnable PS, Dong L. Continuous Monitoring of Soil Nitrate Using a Miniature Sensor with Poly(3-octyl-thiophene) and Molybdenum Disulfide Nanocomposite. ACS APPLIED MATERIALS & INTERFACES 2019; 11:29195-29206. [PMID: 31318522 DOI: 10.1021/acsami.9b07120] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
There is an unmet need for improved fertilizer management in agriculture. Continuous monitoring of soil nitrate would address this need. This paper reports an all-solid-state miniature potentiometric soil sensor that works in direct contact with soils to monitor nitrate-nitrogen (NO3--N) in soil solution with parts-per-million (ppm) resolution. A working electrode is formed from a novel nanocomposite of poly(3-octyl-thiophene) and molybdenum disulfide (POT-MoS2) coated on a patterned Au electrode and covered with a nitrate-selective membrane using a robotic dispenser. The POT-MoS2 layer acts as an ion-to-electron transducing layer with high hydrophobicity and redox properties. The modification of the POT chain with MoS2 increases both conductivity and anion exchange, while minimizing the formation of a thin water layer at the interface between the Au electrode and the ion-selective membrane, which is notorious for solid-state potentiometric ion sensors. Therefore, the use of POT-MoS2 results in an improved sensitivity and selectivity of the working electrode. The reference electrode comprises a screen-printed silver/silver chloride (Ag/AgCl) electrode covered by a protonated Nafion layer to prevent chloride (Cl-) leaching in long-term measurements. This sensor was calibrated using both standard and extracted soil solutions, exhibiting a dynamic range that includes all concentrations relevant for agricultural applications (1-1500 ppm NO3--N). With the POT-MoS2 nanocomposite, the sensor offers a sensitivity of 64 mV/decade for nitrate detection, compared to 48 mV/decade for POT and 38 mV/decade for MoS2. The sensor was embedded into soil slurries where it accurately monitored nitrate for a duration of 27 days.
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Affiliation(s)
| | | | | | | | | | | | | | - James C Schnable
- Department of Agronomy and Horticulture , University of Nebraska-Lincoln , Lincoln 68588 , Nebraska , United States
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Disposable Multi-Walled Carbon Nanotubes-Based Plasticizer-Free Solid-Contact Pb 2+-Selective Electrodes with a Sub-PPB Detection Limit †. SENSORS 2019; 19:s19112550. [PMID: 31167473 PMCID: PMC6603586 DOI: 10.3390/s19112550] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 05/31/2019] [Accepted: 06/02/2019] [Indexed: 11/20/2022]
Abstract
Potentiometric plasticizer-free solid-contact Pb2+-selective electrodes based on copolymer methyl methacrylate-n-butyl acrylate (MMA-BA) as membrane matrix and multi-walled carbon nanotubes (MWCNTs) as intermediate ion-to-electron transducing layer have been developed. The disposable electrodes were prepared by drop-casting the copolymer membrane onto a layer of MWCNTs, which deposited on golden disk electrodes. The obtained electrodes exhibited a sub-ppb level detection limit of 10−10 mol·L−1. The proposed electrodes demonstrated a Nernstian slope of 29.1 ± 0.5 mV/decade in the linear range from 2.0 × 10−10 to 1.5 × 10−3 mol·L−1. No interference from gases (O2 and CO2) or water films was observed. The electrochemical impedance spectroscopy of the fabricated electrodes was compared to that of plasticizer-free Pb2+-selective electrodes without MWCNTs as intermediated layers. The plasticizer-free MWCNTs-based Pb2+-selective electrodes can provide a promising platform for Pb(II) detection in environmental and clinical application.
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40
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Criscuolo F, Taurino I, Dam VA, Catthoor F, Zevenbergen M, Carrara S, De Micheli G. Fast Procedures for the Electrodeposition of Platinum Nanostructures on Miniaturized Electrodes for Improved Ion Sensing. SENSORS (BASEL, SWITZERLAND) 2019; 19:E2260. [PMID: 31100795 PMCID: PMC6567323 DOI: 10.3390/s19102260] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 05/13/2019] [Accepted: 05/14/2019] [Indexed: 12/20/2022]
Abstract
Nanostructured materials have attracted considerable interest over the last few decades to enhance sensing capabilities thanks to their unique properties and large surface area. In particular, noble metal nanostructures offer several advantages including high stability, non-toxicity and excellent electrochemical behaviour. However, in recent years the great expansion of point-of-care (POC) and wearable systems and the attempt to perform measurements in tiny spaces have also risen the need of increasing sensors miniaturization. Fast constant potential electrodeposition techniques have been proven to be an efficient way to obtain conformal platinum and gold nanostructured layers on macro-electrodes. However, this technique is not effective on micro-electrodes. In this paper, we investigate an alternative one-step deposition technique of platinum nanoflowers on micro-electrodes by linear sweep voltammetry (LSV). The effective deposition of platinum nanoflowers with similar properties to the ones deposited on macro-electrodes is confirmed by morphological analysis and by the similar roughness factor (~200) and capacitance (~18 μ F/mm 2 ). The electrochemical behaviour of the nanostructured layer is then tested in an solid-contact (SC) L i + -selective micro-electrode and compared to the case of macro-electrodes. The sensor offers Nernstian calibration with same response time (~15 s) and a one-order of magnitude smaller limit of detection (LOD) ( 2.6 × 10 - 6 ) with respect to the macro-ion-selective sensors (ISE). Finally, sensor reversibility and stability in both wet and dry conditions is proven.
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Affiliation(s)
- Francesca Criscuolo
- Laboratory of Integrated Systems, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
| | - Irene Taurino
- Laboratory of Integrated Systems, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
| | - Van Anh Dam
- Holst Centre, Interuniversity Microelectronics Centre (IMEC), 5656 AE Eindhoven, The Netherlands.
| | - Francky Catthoor
- Department ESAT, Interuniversity Microelectronics Centre (IMEC), 3001 Leuven, Belgium.
| | - Marcel Zevenbergen
- Holst Centre, Interuniversity Microelectronics Centre (IMEC), 5656 AE Eindhoven, The Netherlands.
| | - Sandro Carrara
- Laboratory of Integrated Systems, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
| | - Giovanni De Micheli
- Laboratory of Integrated Systems, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
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41
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Novel Carbon/PEDOT/PSS-Based Screen-Printed Biosensors for Acetylcholine Neurotransmitter and Acetylcholinesterase Detection in Human Serum. Molecules 2019; 24:molecules24081539. [PMID: 31003551 PMCID: PMC6515319 DOI: 10.3390/molecules24081539] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 04/15/2019] [Accepted: 04/16/2019] [Indexed: 12/19/2022] Open
Abstract
New reliable and robust potentiometric ion-selective electrodes were fabricated using poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate) (PEDOT/PSS) as the solid contact between the sensing membrane and electrical substrate for an acetylcholine (ACh) bioassay. A film of PEDOT/PSS was deposited on a solid carbon screen-printed platform made from ceramic substrate. The selective materials used in the ion-selective electrode (ISE) sensor membrane were acetylcholinium tetraphenylborate (ACh/TPB/PEDOT/PSS-ISE) (sensor I) and triacetyl-β-cyclodextrin (β-CD/PEDOT/PSS-ISE) (sensor II). The sensors revealed clear enhanced Nernstian response with a cationic slope 56.4 ± 0.6 and 55.3 ± 1.1 mV/decade toward (ACh+) ions over the dynamic linear range 1.0 × 10−6–1 × 10−3 and 2.0 × 10−6–1.0 × 10−3 M at pH 5 with limits of detection 2.0 × 10−7 and 3.2 × 10−7 M for sensors I and II, respectively. The selectivity behavior of both sensors was also tested and the sensors showed a significant high selectivity toward ACh+ over different common organic and inorganic cations. The stability of the potential response for the solid-contact (SC)/ISEs was evaluated using a chronopotentiometric method and compared with that of electrodes prepared without adding the solid-contact material (PEDOT/PSS). Enhanced accuracy, excellent repeatability, good reproducibility, potential stability, and high selectivity and sensitivity were introduced by these cost-effective sensors. The sensors were also used to measure the activity of acetylcholinesterase (AChE). A linear plot between the initial rate of the hydrolysis of ACh+ substrate and enzyme activity held 5.0 × 10−3–5.2 IU L−1 of AChE enzyme. Application to acetylcholine determination in human serum was done and the results were compared with the standard colorimetric method.
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42
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Zhao L, Jiang Y, Wei H, Jiang Y, Ma W, Zheng W, Cao AM, Mao L. In Vivo Measurement of Calcium Ion with Solid-State Ion-Selective Electrode by Using Shelled Hollow Carbon Nanospheres as a Transducing Layer. Anal Chem 2019; 91:4421-4428. [DOI: 10.1021/acs.analchem.8b04944] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Lijun Zhao
- Institute of Surface/Interface Science and Technology, Key Laboratory of Superlight Material and Surface Technology of Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - Ying Jiang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, the Chinese Academy of Sciences (CAS), Beijing 100190, China
| | - Huan Wei
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, the Chinese Academy of Sciences (CAS), Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yanan Jiang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, the Chinese Academy of Sciences (CAS), Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wenjie Ma
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, the Chinese Academy of Sciences (CAS), Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wei Zheng
- Institute of Surface/Interface Science and Technology, Key Laboratory of Superlight Material and Surface Technology of Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - An-Min Cao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, the Chinese Academy of Sciences (CAS), Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lanqun Mao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, the Chinese Academy of Sciences (CAS), Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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43
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Liu K, Jiang X, Song Y, Liang R. Robust fabrication of nanomaterial-based all-solid-state ion-selective electrodes. RSC Adv 2019; 9:16713-16717. [PMID: 35516404 PMCID: PMC9064413 DOI: 10.1039/c9ra02770j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Accepted: 05/21/2019] [Indexed: 11/21/2022] Open
Abstract
Currently, nanomaterial-based all-solid-state ion-selective electrodes (ASS-ISEs) have become attractive tools for ion sensing in environmental and biological applications. However, nanomaterial solid contact can easily fall off the electrode surface owing to poor adhesion. This poses serious limits to the wide use of these sensors. Herein, we report a general and facile method for the robust fabrication of nanomaterial-based ASS-ISEs. It is based on the silver-based conductive adhesive (CA) with excellent electronic conductivity and strong adhesion ability as the binder to construct nanomaterial-based solid contact. The solid-contact Ca2+-ISE based on single-walled carbon nanotubes (SWCNTs) is chosen as a model. The proposed electrode based on CA-SWCNTs shows a linear response in the concentration range of 10−6 to 10−3 M with a slope of 25.96 ± 0.36 mV per decade and a detection limit of 1.7 × 10−7 M. In addition, the CA-SWCNT-based Ca2+-ISE exhibits an improved potential stability and reduced water film compared to the coated-wire ISE. Above all, experiments also show that the CA-SWCNT-based electrode exhibits nearly the same electrochemical characteristics as the classical only SWCNT-based electrode in term of resistance, capacitance and potential stability. We believe that CA-nanomaterial-based solid contacts provide an appealing substitute for traditional solid contacts based on nanomaterials. For the first time, a general and facile approach for the robust fabrication of nanomaterial-based solid contact ISEs is reported.![]()
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Affiliation(s)
- Kaikai Liu
- School of Environmental and Material Engineering
- Yantai University
- Yantai
- P. R. China
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation
| | - Xiaojing Jiang
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation
- Yantai Institute of Coastal Zone Research
- Chinese Academy of Sciences
- Yantai
- P. R. China
| | - Yuehai Song
- School of Environmental and Material Engineering
- Yantai University
- Yantai
- P. R. China
| | - Rongning Liang
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation
- Yantai Institute of Coastal Zone Research
- Chinese Academy of Sciences
- Yantai
- P. R. China
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44
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45
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Liu Y, Liang Y, Xue L, Liu R, Tao J, Zhou D, Zeng X, Hu W. Polystyrene-coated Interdigitated Microelectrode Array to Detect Free Chlorine towards IoT Applications. ANAL SCI 2018; 35:505-509. [PMID: 30606908 DOI: 10.2116/analsci.18p460] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
We apply interdigitated microelectrode array (IDA) sensors for water quality monitoring. IDA sensors with an ion-sensitive coating show higher sensitivity of about 600 mV with the hypochlorite ion concentration increasing from 0 to 10 ppm more than the traditional sensing method. The response mechanism and selectivity have been studied. Several material components that affect the sensing process were explored. Coupling agents and plasticizer were introduced into the coating material to improve the coating material quality and its adhesion to the electrodes. The stability/repeatability and linearity have been significantly improved.
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Affiliation(s)
- Yang Liu
- ASIC and System State-key Laboratory Microelectronics Department, Fudan University
| | - Yuchen Liang
- Electrical and Computer Engineering Department, University of Texas at Dallas
| | - Leo Xue
- Zhangjiagang One-chip Biotechnology Co., Ltd
| | - Ran Liu
- ASIC and System State-key Laboratory Microelectronics Department, Fudan University
| | - Jun Tao
- ASIC and System State-key Laboratory Microelectronics Department, Fudan University
| | - Dian Zhou
- ASIC and System State-key Laboratory Microelectronics Department, Fudan University.,Electrical and Computer Engineering Department, University of Texas at Dallas
| | - Xuan Zeng
- ASIC and System State-key Laboratory Microelectronics Department, Fudan University
| | - Walter Hu
- ASIC and System State-key Laboratory Microelectronics Department, Fudan University.,Electrical and Computer Engineering Department, University of Texas at Dallas
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46
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Garland NT, McLamore ES, Cavallaro ND, Mendivelso-Perez D, Smith EA, Jing D, Claussen JC. Flexible Laser-Induced Graphene for Nitrogen Sensing in Soil. ACS APPLIED MATERIALS & INTERFACES 2018; 10:39124-39133. [PMID: 30284450 DOI: 10.1021/acsami.8b10991] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Flexible graphene electronics are rapidly gaining interest, but their widespread implementation has been impeded by challenges with ink preparation, ink printing, and postprint annealing processes. Laser-induced graphene (LIG) promises a facile alternative by creating flexible graphene electronics on polyimide substrates through the one-step laser writing fabrication method. Herein, we demonstrate the use of LIG, created with a low-cost UV laser, for electrochemical ion-selective sensing of plant-available nitrogen (i.e., both ammonium and nitrate ions: NH4+ and NO3-) in soil samples. The laser used to create the LIG was operated at distinct pulse widths (10, 20, 30, 40, and 50 ms) to maximize the LIG electrochemical reactivity. Results illustrated that a laser pulse width of 20 ms led to a high percentage of sp2 carbon (77%) and optimal peak oxidation current of 120 μA during cyclic voltammetry of ferro/ferricyanide. Therefore, LIG electrodes created with a 20 ms pulse width were consequently functionalized with distinct ionophores specific to NH4+ (nonactin) or NO3- (tridodecylmethylammonium nitrate) within poly(vinyl chloride)-based membranes to create distinct solid contact ion-selective electrodes (SC-ISEs) for NH4+ and NO3- ion sensing, respectively. The LIG SC-ISEs displayed near Nernstian sensitivities of 51.7 ± 7.8 mV/dec (NH4+) and -54.8 ± 2.5 mV/dec (NO3-), detection limits of 28.2 ± 25.0 μM (NH4+) and 20.6 ± 14.8 μM (NO3-), low long-term drift of 0.93 mV/h (NH4+ sensors) and -5.3 μV/h (NO3- sensors), and linear sensing ranges of 10-5-10-1 M for both sensors. Moreover, soil slurry sensing was performed, and recovery percentages of 96% and 95% were obtained for added NH4+ and NO3-, respectively. These results, combined with a facile fabrication that does not require metallic nanoparticle decoration, make these LIG electrochemical sensors appealing for a wide range of in-field or point-of-service applications for soil health management.
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Affiliation(s)
| | - Eric S McLamore
- Agricultural and Biological Engineering Department, Institute of Food and Agricultural Sciences , University of Florida , Gainesville , Florida 32611 , United States
| | - Nicholas D Cavallaro
- Agricultural and Biological Engineering Department, Institute of Food and Agricultural Sciences , University of Florida , Gainesville , Florida 32611 , United States
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47
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Zhen XV, Rousseau CR, Bühlmann P. Redox Buffer Capacity of Ion-Selective Electrode Solid Contacts Doped with Organometallic Complexes. Anal Chem 2018; 90:11000-11007. [DOI: 10.1021/acs.analchem.8b02595] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Xue V. Zhen
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Celeste R. Rousseau
- 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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48
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Mendecki L, Mirica KA. Conductive Metal-Organic Frameworks as Ion-to-Electron Transducers in Potentiometric Sensors. ACS APPLIED MATERIALS & INTERFACES 2018; 10:19248-19257. [PMID: 29792413 DOI: 10.1021/acsami.8b03956] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
This paper describes an unexplored property of conductive metal-organic frameworks (MOFs) as ion-to-electron transducers in the context of potentiometric detection. Several conductive two-dimensional MOF analogues were drop-cast onto a glassy carbon electrode and then covered with an ion-selective membrane to form a potentiometric sensor. The resulting devices exhibited excellent sensing properties toward anions and cations, characterized by a near-Nernstian response and over 4 orders of magnitude linear range. Impedance and chronopotentiometric measurements revealed the presence of large bulk capacitance (204 ± 2 μF) and good potential stability (drift of 11.1 ± 0.5 μA/h). Potentiometric water test and contact angle measurements showed that this class of materials exhibited hydrophobicity and inhibited the formation of water layer at the electrode/membrane interface, resulting in a highly stable sensing response with a potential drift as low as 11.1 μA/h. The property of ion-to-electron transduction of conductive MOFs may form the basis for the development of this class of materials as promising components within ion-selective electrodes.
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Affiliation(s)
- Lukasz Mendecki
- Burke Laboratory , Dartmouth College , 41 College Street , Hanover , New Hampshire 03755 , United States
| | - Katherine A Mirica
- Burke Laboratory , Dartmouth College , 41 College Street , Hanover , New Hampshire 03755 , United States
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49
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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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50
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Abbas MN, Magar HS. Highly sensitive and selective solid-contact calcium sensor based on Schiff base of benzil with 3-aminosalycilic acid covalently attached to polyacrylic acid amide for health care. J Solid State Electrochem 2017. [DOI: 10.1007/s10008-017-3727-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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