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Probst D, Twiddy J, Hatada M, Pavlidis S, Daniele M, Sode K. Development of Direct Electron Transfer-Type Extended Gate Field Effect Transistor Enzymatic Sensors for Metabolite Detection. Anal Chem 2024; 96:4076-4085. [PMID: 38408165 DOI: 10.1021/acs.analchem.3c04599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
In this work, direct electron transfer (DET)-type extended gate field effect transistor (EGFET) enzymatic sensors were developed by employing DET-type or quasi-DET-type enzymes to detect glucose or lactate in both 100 mM potassium phosphate buffer and artificial sweat. The system employed either a DET-type glucose dehydrogenase or a quasi-DET-type lactate oxidase, the latter of which was a mutant enzyme with suppressed oxidase activity and modified with amine-reactive phenazine ethosulfate. These enzymes were immobilized on the extended gate electrodes. Changes in the measured transistor drain current (ID) resulting from changes to the working electrode junction potential (φ) were observed as glucose and lactate concentrations were varied. Calibration curves were generated for both absolute measured ID and ΔID (normalized to a blank solution containing no substrate) to account for variations in enzyme immobilization and conjugation to the mediator and variations in reference electrode potential. This work resulted in a limit of detection of 53.9 μM (based on ID) for glucose and 2.12 mM (based on ID) for lactate, respectively. The DET-type and Quasi-DET-type EGFET enzymatic sensor was then modeled using the case of the lactate sensor as an equivalent circuit to validate the principle of sensor operation being driven through OCP changes caused by the substrate-enzyme interaction. The model showed slight deviation from collected empirical data with 7.3% error for the slope and 8.6% error for the y-intercept.
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Affiliation(s)
- David Probst
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Chapel Hill, North Carolina 27599, United States
| | - Jack Twiddy
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Chapel Hill, North Carolina 27599, United States
| | - Mika Hatada
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Chapel Hill, North Carolina 27599, United States
| | - Spyridon Pavlidis
- Department of Electrical and Computer Engineering, NC State University, Raleigh, North Carolina 27606, United States
| | - Michael Daniele
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Chapel Hill, North Carolina 27599, United States
- Department of Electrical and Computer Engineering, NC State University, Raleigh, North Carolina 27606, United States
| | - Koji Sode
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Chapel Hill, North Carolina 27599, United States
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2
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Le CV, Yoon H. Advances in the Use of Conducting Polymers for Healthcare Monitoring. Int J Mol Sci 2024; 25:1564. [PMID: 38338846 PMCID: PMC10855550 DOI: 10.3390/ijms25031564] [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: 12/19/2023] [Revised: 01/21/2024] [Accepted: 01/22/2024] [Indexed: 02/12/2024] Open
Abstract
Conducting polymers (CPs) are an innovative class of materials recognized for their high flexibility and biocompatibility, making them an ideal choice for health monitoring applications that require flexibility. They are active in their design. Advances in fabrication technology allow the incorporation of CPs at various levels, by combining diverse CPs monomers with metal particles, 2D materials, carbon nanomaterials, and copolymers through the process of polymerization and mixing. This method produces materials with unique physicochemical properties and is highly customizable. In particular, the development of CPs with expanded surface area and high conductivity has significantly improved the performance of the sensors, providing high sensitivity and flexibility and expanding the range of available options. However, due to the morphological diversity of new materials and thus the variety of characteristics that can be synthesized by combining CPs and other types of functionalities, choosing the right combination for a sensor application is difficult but becomes important. This review focuses on classifying the role of CP and highlights recent advances in sensor design, especially in the field of healthcare monitoring. It also synthesizes the sensing mechanisms and evaluates the performance of CPs on electrochemical surfaces and in the sensor design. Furthermore, the applications that can be revolutionized by CPs will be discussed in detail.
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Affiliation(s)
- Cuong Van Le
- School of Polymer Science and Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea;
- Department of Polymer Engineering, Graduate School, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea
| | - Hyeonseok Yoon
- School of Polymer Science and Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea;
- Department of Polymer Engineering, Graduate School, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea
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3
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Nguyen TTH, Nguyen CM, Huynh MA, Vu HH, Nguyen TK, Nguyen NT. Field effect transistor based wearable biosensors for healthcare monitoring. J Nanobiotechnology 2023; 21:411. [PMID: 37936115 PMCID: PMC10629051 DOI: 10.1186/s12951-023-02153-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Accepted: 10/09/2023] [Indexed: 11/09/2023] Open
Abstract
The rapid advancement of wearable biosensors has revolutionized healthcare monitoring by screening in a non-invasive and continuous manner. Among various sensing techniques, field-effect transistor (FET)-based wearable biosensors attract increasing attention due to their advantages such as label-free detection, fast response, easy operation, and capability of integration. This review explores the innovative developments and applications of FET-based wearable biosensors for healthcare monitoring. Beginning with an introduction to the significance of wearable biosensors, the paper gives an overview of structural and operational principles of FETs, providing insights into their diverse classifications. Next, the paper discusses the fabrication methods, semiconductor surface modification techniques and gate surface functionalization strategies. This background lays the foundation for exploring specific FET-based biosensor designs, including enzyme, antibody and nanobody, aptamer, as well as ion-sensitive membrane sensors. Subsequently, the paper investigates the incorporation of FET-based biosensors in monitoring biomarkers present in physiological fluids such as sweat, tears, saliva, and skin interstitial fluid (ISF). Finally, we address challenges, technical issues, and opportunities related to FET-based biosensor applications. This comprehensive review underscores the transformative potential of FET-based wearable biosensors in healthcare monitoring. By offering a multidimensional perspective on device design, fabrication, functionalization and applications, this paper aims to serve as a valuable resource for researchers in the field of biosensing technology and personalized healthcare.
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Affiliation(s)
- Thi Thanh-Ha Nguyen
- Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, QLD, 4111, Australia
- School of Engineering and Built Environment, Griffith University, Nathan, QLD, 4111, Australia
| | - Cong Minh Nguyen
- Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, QLD, 4111, Australia
- School of Environment and Science (ESC), Griffith University, Nathan, QLD, 4111, Australia
| | - Minh Anh Huynh
- Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, QLD, 4111, Australia
- School of Engineering and Built Environment, Griffith University, Nathan, QLD, 4111, Australia
| | - Hoang Huy Vu
- Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, QLD, 4111, Australia
- School of Engineering and Built Environment, Griffith University, Nathan, QLD, 4111, Australia
| | - Tuan-Khoa Nguyen
- Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, QLD, 4111, Australia
| | - Nam-Trung Nguyen
- Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, QLD, 4111, Australia.
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4
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Rossignatti BC, Vieira AP, Barbosa MS, Abegão LMG, Mello HJNPD. Thin Films of Polyaniline-Based Nanocomposites with CeO 2 and WO 3 Metal Oxides Applied to the Impedimetric and Capacitive Transducer Stages in Chemical Sensors. Polymers (Basel) 2023; 15:polym15030578. [PMID: 36771879 PMCID: PMC9920537 DOI: 10.3390/polym15030578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/06/2023] [Accepted: 01/19/2023] [Indexed: 01/24/2023] Open
Abstract
There is a recognized need for the development of cost-effective, stable, fast, and optimized novel materials for technological applications. Substantial research has been undertaken on the role of polymeric nanocomposites in sensing applications. However, the use of PANI-based nanocomposites in impedimetric and capacitive electrochemical sensors has yet to be understood. The present study aimed to explore the relationship between the sensitivity and linearity of electrochemical pH sensors and the composition of nanocomposites. Thin films of PANI/CeO2 and PANI/WO3 were deposited via spin coating for characterization and application during the electrochemical impedance and capacitance spectroscopy (EIS and ECS) transduction stages. The findings showed that the optimized performance of the devices was extended not only to the sensitivity but also to the linearity. An increase of 213% in the ECS sensitivity of the PANI/CeO2 compared to the metal oxide and an increase of 64% in the ECS linearity of the PANI/WO3 compared to the polymeric sensitivity were reported. This study identified the structure-property relationship of nanocomposite thin films of PANI with metal oxides for use in electrochemical sensors. The developed materials could be applied in devices to be used in different fields, such as food, environment, and biomedical monitoring.
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Affiliation(s)
| | - Amanda Portes Vieira
- Physics Institute, Goiás Federal University, Samambaia Campus, Goiânia 74001-970, GO, Brazil
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5
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Emerging Applications of Versatile Polyaniline-Based Polymers in the Food Industry. Polymers (Basel) 2022; 14:polym14235168. [PMID: 36501566 PMCID: PMC9737623 DOI: 10.3390/polym14235168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 11/08/2022] [Accepted: 11/09/2022] [Indexed: 11/30/2022] Open
Abstract
Intrinsically conducting polymers (ICPs) have been widely studied in various applications, such as sensors, tissue engineering, drug delivery, and semiconductors. Specifically, polyaniline (PANI) stands out in food industry applications due to its advantageous reversible redox properties, electrical conductivity, and simple modification. The rising concerns about food safety and security have encouraged the development of PANI as an antioxidant, antimicrobial agent, food freshness indicator, and electronic nose. At the same time, it plays an important role in food safety control to ensure the quality of food. This study reviews the emerging applications of PANI in the food industry. It has been found that the versatile applications of PANI allow the advancement of modern active and intelligent food packaging and better food quality monitoring systems.
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6
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Khan F, Das S. Modified Low Molecular Weight Pure and Engineered Gels: A Review of Strategies towards Their Development. ChemistrySelect 2022. [DOI: 10.1002/slct.202200205] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Finaz Khan
- Department of Chemistry Amity Institute of Applied Sciences Amity University Kolkata Major Arterial Road, Action Area II, Kadampukur Village, Rajarhat, Newtown West Bengal 700135 India
| | - Susmita Das
- Department of Chemistry Amity Institute of Applied Sciences Amity University Kolkata Major Arterial Road, Action Area II, Kadampukur Village, Rajarhat, Newtown West Bengal 700135 India
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7
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Osuna V, Vega-Rios A, Zaragoza-Contreras EA, Estrada-Moreno IA, Dominguez RB. Progress of Polyaniline Glucose Sensors for Diabetes Mellitus Management Utilizing Enzymatic and Non-Enzymatic Detection. BIOSENSORS 2022; 12:137. [PMID: 35323407 PMCID: PMC8946794 DOI: 10.3390/bios12030137] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 02/17/2022] [Accepted: 02/18/2022] [Indexed: 05/21/2023]
Abstract
Glucose measurement is a fundamental tool in the daily care of Diabetes Mellitus (DM) patients and healthcare professionals. While there is an established market for glucose sensors, the rising number of DM cases has promoted intensive research to provide accurate systems for glucose monitoring. Polyaniline (PAni) is a conductive polymer with a linear conjugated backbone with sequences of single C-C and double C=C bonds. This unique structure produces attractive features for the design of sensing systems such as conductivity, biocompatibility, environmental stability, tunable electrochemical properties, and antibacterial activity. PAni-based glucose sensors (PBGS) were actively developed in past years, using either enzymatic or non-enzymatic principles. In these devices, PAni played roles as a conductive material for electron transfer, biocompatible matrix for enzymatic immobilization, or sensitive layer for detection. In this review, we covered the development of PBGS from 2015 to the present, and it is not even exhaustive; it provides an overview of advances and achievements for enzymatic and non-enzymatic PBGB PBGS for self-monitoring and continuous blood glucose monitoring. Additionally, the limitations of PBGB PBGS to advance into robust and stable technology and the challenges associated with their implementation are presented and discussed.
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Affiliation(s)
- Velia Osuna
- CONACYT-CIMAV, SC, Av. Miguel de Cervantes #120, Chihuahua C.P. 31136, Mexico; (V.O.); (I.A.E.-M.)
| | - Alejandro Vega-Rios
- Centro de Investigación en Materiales Avanzados, SC, Av. Miguel de Cervantes #120, Chihuahua C.P. 31136, Mexico; (A.V.-R.); (E.A.Z.-C.)
| | - Erasto Armando Zaragoza-Contreras
- Centro de Investigación en Materiales Avanzados, SC, Av. Miguel de Cervantes #120, Chihuahua C.P. 31136, Mexico; (A.V.-R.); (E.A.Z.-C.)
| | | | - Rocio B. Dominguez
- CONACYT-CIMAV, SC, Av. Miguel de Cervantes #120, Chihuahua C.P. 31136, Mexico; (V.O.); (I.A.E.-M.)
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8
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Sarcina L, Macchia E, Tricase A, Scandurra C, Imbriano A, Torricelli F, Cioffi N, Torsi L, Bollella P. Enzyme based field effect transistor: State‐of‐the‐art and future perspectives. ELECTROCHEMICAL SCIENCE ADVANCES 2022. [DOI: 10.1002/elsa.202100216] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Affiliation(s)
- Lucia Sarcina
- Dipartimento di Chimica Università degli Studi di Bari “Aldo Moro” Bari Italy
| | - Eleonora Macchia
- Faculty of Science and Engineering Åbo Akademi University Turku Finland
| | - Angelo Tricase
- Dipartimento di Chimica Università degli Studi di Bari “Aldo Moro” Bari Italy
| | - Cecilia Scandurra
- Dipartimento di Chimica Università degli Studi di Bari “Aldo Moro” Bari Italy
| | - Anna Imbriano
- Dipartimento di Chimica Università degli Studi di Bari “Aldo Moro” Bari Italy
- Centre for Colloid and Surface Science ‐ Università degli Studi di Bari “Aldo Moro” Bari Italy
| | - Fabrizio Torricelli
- Dipartimento Ingegneria dell'Informazione Università degli Studi di Brescia Brescia Italy
| | - Nicola Cioffi
- Dipartimento di Chimica Università degli Studi di Bari “Aldo Moro” Bari Italy
- Centre for Colloid and Surface Science ‐ Università degli Studi di Bari “Aldo Moro” Bari Italy
| | - Luisa Torsi
- Dipartimento di Chimica Università degli Studi di Bari “Aldo Moro” Bari Italy
- Faculty of Science and Engineering Åbo Akademi University Turku Finland
- Centre for Colloid and Surface Science ‐ Università degli Studi di Bari “Aldo Moro” Bari Italy
| | - Paolo Bollella
- Dipartimento di Chimica Università degli Studi di Bari “Aldo Moro” Bari Italy
- Centre for Colloid and Surface Science ‐ Università degli Studi di Bari “Aldo Moro” Bari Italy
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9
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Urbanowicz M, Sadowska K, Paziewska-Nowak A, Sołdatowska A, Pijanowska DG. Highly Stable Potentiometric (Bio)Sensor for Urea and Urease Activity Determination. MEMBRANES 2021; 11:membranes11110898. [PMID: 34832127 PMCID: PMC8623495 DOI: 10.3390/membranes11110898] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 11/10/2021] [Accepted: 11/18/2021] [Indexed: 11/23/2022]
Abstract
There is growing interest for bioanalytical tools that might be designed for a specific user, primarily for research purposes. In this perspective, a new, highly stable potentiometric sensor based on glassy carbon/polyazulene/NH4+-selective membrane was developed and utilized for urease activity determination. Urease–urea interaction studies were carried out and the Michaelis–Menten constant was established for this enzymatic reaction. Biofunctionalization of the ammonium ion-selective sensor with urease lead to urea biosensor with remarkably good potential stability (drift coefficient ~0.9 mV/h) and short response time (t95% = 36 s). The prepared biosensor showed the Nernstian response (S = 52.4 ± 0.7 mV/dec) in the urea concentration range from 0.01 to 20 mM, stable for the experimental time of 60 days. In addition, some insights into electrical properties of the ion-to-electron transducing layer resulting from impedance spectroscopy measurements are presented. Based on the RCQ equivalent circuits comparison, it can be drawn that the polyazulene (PAz) layer shows the least capacitive behavior, which might result in good time stability of the sensor in respect to response as well as potential E0. Both the polyazulene-based solid-contact ion selective electrodes and urea biosensors were successfully used in trial studies for determination of ammonium ion and urea in human saliva samples. The accuracy of ammonium ion and urea levels determination by potentiometric method was confirmed by two reference spectrophotometric methods.
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10
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Potentiometric urea biosensors. Clin Chim Acta 2021; 524:154-163. [PMID: 34774544 DOI: 10.1016/j.cca.2021.11.011] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 11/04/2021] [Accepted: 11/08/2021] [Indexed: 12/17/2022]
Abstract
Excess nitrogen in the body is converted to urea in the liver, and urea is disposed as a waste product in urine. Urea concentration can change in body fluids such as blood due to the presence of certain disorders. Therefore, the determination of urea is of high importance in various areas including medical diagnosis, as well as food quality control and environmental monitoring. Potentiometric sensors have certain advantages over their alternatives, such as rapidity, portability, cost effectiveness, high sensitivity, easy operation and simple apparatus. Potentiometric urea biosensors based on enzyme urease have been developed using various materials including nanoparticles and films, and also using different methodologies. In this review, we covered potentiometric urea biosensors reported in the literature, and touched upon their certain structure characteristics and performance parameters including detection limit, working concentration range, response time and lifetime, all of which are of practical importance. Each potentiometric urea biosensor has its own advantages and drawbacks, thus the selection of appropriate method depends on the sample to be analyzed, its urea concentration range and other requirements of the particular application. Further research is needed in order to optimize the performance of these devices and to broaden their applicability.
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11
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Chen CH, Lin YC, Yen FS. Synthesis and Characterization of Conducting PANDB/χ-Al 2O 3 Core-Shell Nanocomposites by In Situ Polymerization. Polymers (Basel) 2021; 13:2787. [PMID: 34451325 PMCID: PMC8398040 DOI: 10.3390/polym13162787] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 08/17/2021] [Accepted: 08/18/2021] [Indexed: 11/16/2022] Open
Abstract
Polyaniline doped with dodecylbenzenesulfonic acid/χ-aluminum oxide (PANDB/χ-Al2O3) conducting core-shell nanocomposites was synthesized via an in situ polymerization method in this study. PANDB was synthesized in the presence of dodecylbenzenesulfonic acid (DBSA), which functioned as a dopant and surfactant. The electrical conductivity of the conducting PANDB/χ-Al2O3 core-shell nanocomposite was approximately 1.7 × 10-1 S/cm when the aniline/χ-Al2O3 (AN/χ-Al2O3) weight ratio was 1.5. The transmission electron microscopy (TEM) results indicated that the χ-Al2O3 nanoflakes were thoroughly coated by PANDB to form the core-shell (χ-Al2O3-PANDB) structure. The TEM and field-emission scanning electron microscopy (FE-SEM) images of the conducting PANDB/χ-Al2O3 core-shell nanocomposites also indicated that the thickness of the PANDB layer (shell) could be increased as the weight ratio of AN/χ-Al2O3 was increased. In this study, the optimum weight ratio of AN/χ-Al2O3 was identified as 1.5. The conducting PANDB/χ-Al2O3 core-shell nanocomposite was then blended with water-based polyurethane (WPU) to form a conducting WPU/PANDB/χ-Al2O3 blend film. The resulting blend film has promising antistatic and electrostatic discharge (ESD) properties.
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Affiliation(s)
- Cheng-Ho Chen
- Department of Chemical and Materials Engineering, Southern Taiwan University of Science and Technology, Tainan City 710, Taiwan;
| | - Ying-Chen Lin
- Department of Chemical and Materials Engineering, Southern Taiwan University of Science and Technology, Tainan City 710, Taiwan;
| | - Fu-Su Yen
- Department of Resources Engineering, National Cheng-Kung University, Tainan City 701, Taiwan;
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Walker NL, Roshkolaeva AB, Chapoval AI, Dick JE. Recent Advances in Potentiometric Biosensing. CURRENT OPINION IN ELECTROCHEMISTRY 2021; 28:100735. [PMID: 34056144 PMCID: PMC8162913 DOI: 10.1016/j.coelec.2021.100735] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Potentiometric biosensors are incredibly versatile tools with budding uses in industry, security, environmental safety, and human health. This mini-review on recent (2018-2020) advances in the field of potentiometric biosensors is intended to give a general overview of the main types of potentiometric biosensors for novices while still providing a brief but thorough summary of the novel advances and trends for experienced practitioners. These trends include the incorporation of nanomaterials, graphene, and novel immobilization materials, as well as a strong push towards miniaturized, flexible, and self-powered devices for in-field or at-home use.
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Affiliation(s)
- Nicole L Walker
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | | | - Andrei I Chapoval
- Russian-American Anti-Cancer Center, Altai State University, Barnaul, 656049, Russia
| | - Jeffrey E Dick
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
- Lineberger Comprehensive Cancer Center, School of Medicine, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
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13
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Suni II. Substrate Materials for Biomolecular Immobilization within Electrochemical Biosensors. BIOSENSORS 2021; 11:239. [PMID: 34356710 PMCID: PMC8301891 DOI: 10.3390/bios11070239] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 07/01/2021] [Accepted: 07/08/2021] [Indexed: 01/17/2023]
Abstract
Electrochemical biosensors have potential applications for agriculture, food safety, environmental monitoring, sports medicine, biomedicine, and other fields. One of the primary challenges in this field is the immobilization of biomolecular probes atop a solid substrate material with adequate stability, storage lifetime, and reproducibility. This review summarizes the current state of the art for covalent bonding of biomolecules onto solid substrate materials. Early research focused on the use of Au electrodes, with immobilization of biomolecules through ω-functionalized Au-thiol self-assembled monolayers (SAMs), but stability is usually inadequate due to the weak Au-S bond strength. Other noble substrates such as C, Pt, and Si have also been studied. While their nobility has the advantage of ensuring biocompatibility, it also has the disadvantage of making them relatively unreactive towards covalent bond formation. With the exception of Sn-doped In2O3 (indium tin oxide, ITO), most metal oxides are not electrically conductive enough for use within electrochemical biosensors. Recent research has focused on transition metal dichalcogenides (TMDs) such as MoS2 and on electrically conductive polymers such as polyaniline, polypyrrole, and polythiophene. In addition, the deposition of functionalized thin films from aryldiazonium cations has attracted significant attention as a substrate-independent method for biofunctionalization.
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Affiliation(s)
- Ian Ivar Suni
- Materials Technology Center, Southern Illinois University, Carbondale, IL 62901, USA; ; Tel.: +1-618-453-7822
- School of Chemistry and Biomolecular Sciences, Southern Illinois University, Carbondale, IL 62901, USA
- School of Mechanical, Aerospace and Materials Engineering, Southern Illinois University, Carbondale, IL 62901, USA
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14
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Islam T, Hasan MM, Awal A, Nurunnabi M, Ahammad AJS. Metal Nanoparticles for Electrochemical Sensing: Progress and Challenges in the Clinical Transition of Point-of-Care Testing. Molecules 2020; 25:E5787. [PMID: 33302537 PMCID: PMC7763225 DOI: 10.3390/molecules25245787] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 11/23/2020] [Accepted: 12/04/2020] [Indexed: 02/08/2023] Open
Abstract
With the rise in public health awareness, research on point-of-care testing (POCT) has significantly advanced. Electrochemical biosensors (ECBs) are one of the most promising candidates for the future of POCT due to their quick and accurate response, ease of operation, and cost effectiveness. This review focuses on the use of metal nanoparticles (MNPs) for fabricating ECBs that has a potential to be used for POCT. The field has expanded remarkably from its initial enzymatic and immunosensor-based setups. This review provides a concise categorization of the ECBs to allow for a better understanding of the development process. The influence of structural aspects of MNPs in biocompatibility and effective sensor design has been explored. The advances in MNP-based ECBs for the detection of some of the most prominent cancer biomarkers (carcinoembryonic antigen (CEA), cancer antigen 125 (CA125), Herceptin-2 (HER2), etc.) and small biomolecules (glucose, dopamine, hydrogen peroxide, etc.) have been discussed in detail. Additionally, the novel coronavirus (2019-nCoV) ECBs have been briefly discussed. Beyond that, the limitations and challenges that ECBs face in clinical applications are examined and possible pathways for overcoming these limitations are discussed.
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Affiliation(s)
- Tamanna Islam
- Department of Chemistry, Jagannath University, Dhaka 1100, Bangladesh; (T.I.); (M.M.H.); (A.A.)
| | - Md. Mahedi Hasan
- Department of Chemistry, Jagannath University, Dhaka 1100, Bangladesh; (T.I.); (M.M.H.); (A.A.)
| | - Abdul Awal
- Department of Chemistry, Jagannath University, Dhaka 1100, Bangladesh; (T.I.); (M.M.H.); (A.A.)
| | - Md Nurunnabi
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Texas at El Paso, El Paso, TX 79902, USA
- Department of Biomedical Engineering, University of Texas at El Paso, El Paso, TX 79968, USA
- Department of Environmental Science & Engineering, University of Texas at El Paso, El Paso, TX 79968, USA
| | - A. J. Saleh Ahammad
- Department of Chemistry, Jagannath University, Dhaka 1100, Bangladesh; (T.I.); (M.M.H.); (A.A.)
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Luong JHT, Narayan T, Solanki S, Malhotra BD. Recent Advances of Conducting Polymers and Their Composites for Electrochemical Biosensing Applications. J Funct Biomater 2020; 11:E71. [PMID: 32992861 PMCID: PMC7712382 DOI: 10.3390/jfb11040071] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 09/17/2020] [Accepted: 09/20/2020] [Indexed: 02/01/2023] Open
Abstract
Conducting polymers (CPs) have been at the center of research owing to their metal-like electrochemical properties and polymer-like dispersion nature. CPs and their composites serve as ideal functional materials for diversified biomedical applications like drug delivery, tissue engineering, and diagnostics. There have also been numerous biosensing platforms based on polyaniline (PANI), polypyrrole (PPY), polythiophene (PTP), and their composites. Based on their unique properties and extensive use in biosensing matrices, updated information on novel CPs and their role is appealing. This review focuses on the properties and performance of biosensing matrices based on CPs reported in the last three years. The salient features of CPs like PANI, PPY, PTP, and their composites with nanoparticles, carbon materials, etc. are outlined along with respective examples. A description of mediator conjugated biosensor designs and enzymeless CPs based glucose sensing has also been included. The future research trends with required improvements to improve the analytical performance of CP-biosensing devices have also been addressed.
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Affiliation(s)
- John H. T. Luong
- School of Chemistry and the Analytical and Biological Chemistry Research Facility (ABCRF), University College Cork, College Road, T12 YN60 Cork, Ireland
| | - Tarun Narayan
- Department of Biotechnology, Delhi Technological University, Delhi 110042, India; (T.N.); (S.S.); (B.D.M.)
| | - Shipra Solanki
- Department of Biotechnology, Delhi Technological University, Delhi 110042, India; (T.N.); (S.S.); (B.D.M.)
- Applied Chemistry Department, Delhi Technological University, Delhi 110042, India
| | - Bansi D. Malhotra
- Department of Biotechnology, Delhi Technological University, Delhi 110042, India; (T.N.); (S.S.); (B.D.M.)
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Nogueira Pedroza Dias Mello HJ, Bueno PR, Mulato M. Comparing glucose and urea enzymatic electrochemical and optical biosensors based on polyaniline thin films. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2020; 12:4199-4210. [PMID: 32789344 DOI: 10.1039/d0ay01018a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Analytical sensors that can detect chemical (including biological) analytes are becoming increasingly widespread within the field of analytical chemistry. More than this, in a world tending towards the 'internet-of-things', the miniaturization of such devices is becoming increasingly urgent. Accordingly, electrochemical methods that are simultaneously multiplexable and effective at a miniature scale are receiving much attention. In the present work, we compare the label-free electrochemical response of enzymatic biosensors with the response of their optical counterpart. As a proof-of-concept we compare the electrochemical impedimetric response and the first time described capacitive response of enzymatic biosensors to their optical reflectance response (measured in the visible region using a portable handset spectrophotometer). The target was the detection of glucose and urea. The chemical platform of the sensors was composed of enzymatically functionalized polyaniline thin films. Sensitivity, linearity, and the limit of detection were analyzed for both electrochemical and optical instrumental settings. We found that the impedimetric/capacitive electrochemical setup produced a response that was of a similar quality to the optical response (sensitivities of 10.7 ± 0.7, 7.4 ± 0.7 and 4.3 ± 0.2% per decade for impedimetric, capacitive and optical glucose biosensors, respectively) with a broader linear range (10-4 to 10-1 mol L-1 for both glucose and urea biosensors) and similar limit-of-detection in the range of 1 μmol L-1 within a relevant and practical diagnosis range for biomedical applications.
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Affiliation(s)
- Hugo José Nogueira Pedroza Dias Mello
- Department of Physics, Faculty of Philosophy, Sciences and Letters at Ribeirao Preto, University of Sao Paulo - USP, 14040-901, Ribeirao Preto, SP, Brazil.
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Micrometer-scale light-addressable potentiometric sensor on an optical fiber for biological glucose determination. Anal Chim Acta 2020; 1123:36-43. [DOI: 10.1016/j.aca.2020.05.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 04/16/2020] [Accepted: 05/03/2020] [Indexed: 11/18/2022]
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