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Trandabat AF, Ciobanu RC, Schreiner OD, Schreiner TG, Aradoaei S. Chemiresistors Based on Hybrid Nanostructures Obtained from Graphene and Conducting Polymers with Potential Use in Breath Methane Detection Associated with Irritable Bowel Syndrome. Int J Mol Sci 2024; 25:5552. [PMID: 38791590 PMCID: PMC11121982 DOI: 10.3390/ijms25105552] [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: 04/19/2024] [Revised: 05/15/2024] [Accepted: 05/16/2024] [Indexed: 05/26/2024] Open
Abstract
This paper describes the process of producing chemiresistors based on hybrid nanostructures obtained from graphene and conducting polymers. The technology of graphene presumed the following: dispersion and support stabilization based on the chemical vapor deposition technique; transfer of the graphene to the substrate by spin-coating of polymethyl methacrylate; and thermal treatment and electrochemical delamination. For the process at T = 950 °C, a better settlement of the grains was noticed, with the formation of layers predominantly characterized by peaks and not by depressions. The technology for obtaining hybrid nanostructures from graphene and conducting polymers was drop-casting, with solutions of Poly(3-hexylthiophene (P3HT) and Poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-bithiophene] (F8T2). In the case of F8T2, compared to P3HT, a 10 times larger dimension of grain size and about 7 times larger distances between the peak clusters were noticed. To generate chemiresistors from graphene-polymer structures, an ink-jet printer was used, and the metallization was made with commercial copper ink for printed electronics, leading to a structure of a resistor with an active surface of about 1 cm2. Experimental calibration curves were plotted for both sensing structures, for a domain of CH4 of up to 1000 ppm concentration in air. A linearity of the curve for the low concentration of CH4 was noticed for the graphene structure with F8T2, presenting a sensitivity of about 6 times higher compared with the graphene structure with P3HT, which makes the sensing structure of graphene with F8T2 more feasible and reliable for the medical application of irritable bowel syndrome evaluation.
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Affiliation(s)
- Alexandru F. Trandabat
- Department of Electrical Measurements and Materials, Gheorghe Asachi Technical University, 700050 Iasi, Romania; (A.F.T.); (O.D.S.); (T.G.S.); (S.A.)
| | - Romeo C. Ciobanu
- Department of Electrical Measurements and Materials, Gheorghe Asachi Technical University, 700050 Iasi, Romania; (A.F.T.); (O.D.S.); (T.G.S.); (S.A.)
| | - Oliver Daniel Schreiner
- Department of Electrical Measurements and Materials, Gheorghe Asachi Technical University, 700050 Iasi, Romania; (A.F.T.); (O.D.S.); (T.G.S.); (S.A.)
| | - Thomas Gabriel Schreiner
- Department of Electrical Measurements and Materials, Gheorghe Asachi Technical University, 700050 Iasi, Romania; (A.F.T.); (O.D.S.); (T.G.S.); (S.A.)
- Department of Medical Specialties III, Faculty of Medicine, University of Medicine and Pharmacy “Grigore T. Popa”, 700115 Iasi, Romania
| | - Sebastian Aradoaei
- Department of Electrical Measurements and Materials, Gheorghe Asachi Technical University, 700050 Iasi, Romania; (A.F.T.); (O.D.S.); (T.G.S.); (S.A.)
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Sahu S, Tripathy K, Bhattacharjee M, Chopra D. Engineering mechanical compliance in polymers and composites for the design of smart flexible sensors. Chem Commun (Camb) 2024; 60:4382-4394. [PMID: 38577734 DOI: 10.1039/d4cc00938j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
Polymers are one of the most popular materials for next-generation flexible sensing device fabrication due to their tunable mechanical and electrical properties. A series of prior research studies in the field of smart flexible and wearable sensing illustrates the potential of various polymer and composite materials to be applied in sensor development. In this direction, mechanical compliance plays a vital role as it ensures the stability and reliability of the fabricated sensor. Therefore, engineering mechanical compliance for the development of smart flexible solutions has emerged as a significant area of research. Furthermore, the usage of flexible sensing devices is rapidly increasing in the field of healthcare devices and robotic automation. This feature article summarizes the relevant contributions of the authors in the field of engineered polymers and composites for flexible sensor development with a focus on healthcare and physical sensing applications. We discuss the polymer and composite materials, their characteristics, fabrication technologies, finite element method analysis, and examples of flexible physical sensors, i.e. pressure, strain, and temperature sensors, for various wearable healthcare applications and robotic automation. Finally, we discuss examples of multi-sensory systems having flexible sensors.
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Affiliation(s)
- Shivank Sahu
- i-lab, Electrical Engineering and Computer Science, Indian Institute of Science Education and Research Bhopal, Bhopal, MP 462066, India.
| | - Kamalesh Tripathy
- i-lab, Electrical Engineering and Computer Science, Indian Institute of Science Education and Research Bhopal, Bhopal, MP 462066, India.
| | - Mitradip Bhattacharjee
- i-lab, Electrical Engineering and Computer Science, Indian Institute of Science Education and Research Bhopal, Bhopal, MP 462066, India.
| | - Deepak Chopra
- Crystallography and Crystal Chemistry Laboratory, Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal By-Pass Road, Bhopal, MP 462066, India.
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Marineau A, Karpukhina U, Agyemang R, Stewart KME. Effect of Ionic Strength and pH on the Sorption of Heavy Metals onto Polyaniline Copolymers in Aqueous Solutions. ACS APPLIED MATERIALS & INTERFACES 2024; 16:10623-10632. [PMID: 38356331 DOI: 10.1021/acsami.3c16449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/16/2024]
Abstract
Polyaniline (PANI) and two copolymers, poly(aniline-co-o-toluidine) (PoTOL-50) and poly(aniline-co-o-anisidine) (PoANI-50) were synthesized with equal input ratios (1:1) to enhance PANI as sensing material for the sensing of various heavy metal analytes in aqueous solutions. The polymers were evaluated for both their sensitivity and selectivity toward four heavy metals (Ba2+, Cd2+, Cu2+, and Ni2+) and two common matrix interferents (Ca2+ and Mg2+) at 10 and 40 ppm. The effect of pH and ionic strength of the aqueous solutions on the sensitivity and selectivity was also evaluated. All three polymers showed high sensitivity and selectivity to Ba2+. Varying the pH and ionic strength of solutions did not show significant differences in either the selectivity or the sensitivity of the polymers.
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Affiliation(s)
- Angela Marineau
- Department of Chemistry, Trent University, 1600 W. Bank Dr, Peterborough, Ontario K9L0G2, Canada
| | - Uliana Karpukhina
- Department of Chemistry, Trent University, 1600 W. Bank Dr, Peterborough, Ontario K9L0G2, Canada
| | - Ruth Agyemang
- Department of Chemistry, Trent University, 1600 W. Bank Dr, Peterborough, Ontario K9L0G2, Canada
| | - Katherine M E Stewart
- Department of Chemistry, Trent University, 1600 W. Bank Dr, Peterborough, Ontario K9L0G2, Canada
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Phasuksom K, Ariyasajjamongkol N, Sirivat A. Screen-printed electrode designed with MXene/doped-polyindole and MWCNT/doped-polyindole for chronoamperometric enzymatic glucose sensor. Heliyon 2024; 10:e24346. [PMID: 38293452 PMCID: PMC10826182 DOI: 10.1016/j.heliyon.2024.e24346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 12/06/2023] [Accepted: 01/08/2024] [Indexed: 02/01/2024] Open
Abstract
The enzymatic glucose sensors as modified by MXene-dPIn and MWCNT-dPIn on a screen-printed carbon electrode (SPCE) were investigated. Herein, MXene was molybdenum carbide (Mo3C2) which has never been utilized and reported for glucose sensors. The biopolymer type to support the enzyme immobilization was examined and compared between chitosan (CHI) and κ-carrageenan (κC). MWCNT-dPIn obviously showed a larger electroactive surface area, lower charge transfer resistance and higher redox current than Mo3C2-dPIn, indicating that MWCNT-dPIn is superior to Mo3C2-dPIn. For the chitosan-based sensors, the sensitivity value of CHI-GOD/Mo3C2-dPIn is 3.53 μA mM-1 cm-2 in the linear range of 2.5-10 mM with the calculated LOD of 1.57 mM. The sensitivity value of CHI-GOD/MWCNT-dPIn is 18.85 μA mM-1 cm-2 in the linear range of 0.5-25 mM with the calculated LOD of 0.115 mM. For the κ-carrageenan based sensors, κC-GOD/MWCNT-dPIn exhibits the sensitivity of 15.80 μA mM-1 cm-2 and the widest linear range from 0.1 to 50 mM with the calculated LOD of 0.03 mM. The presently fabricated sensors exhibit excellent reproducibility, good selectivity, high stability, and disposal use. The fabricated glucose sensors are potential as practical glucose sensors as the detectable glucose ranges well cover the glucose levels found in blood, urine, and sweat for both healthy people and diabetic patients.
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Affiliation(s)
- Katesara Phasuksom
- Conductive and Electroactive Polymers Research Unit, The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Nuttha Ariyasajjamongkol
- Conductive and Electroactive Polymers Research Unit, The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Anuvat Sirivat
- Conductive and Electroactive Polymers Research Unit, The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok, 10330, Thailand
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Ye T, Yang Y, Bai J, Wu FY, Zhang L, Meng LY, Lan Y. The mechanical, optical, and thermal properties of graphene influencing its pre-clinical use in treating neurological diseases. Front Neurosci 2023; 17:1162493. [PMID: 37360172 PMCID: PMC10288862 DOI: 10.3389/fnins.2023.1162493] [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: 03/07/2023] [Accepted: 05/17/2023] [Indexed: 06/28/2023] Open
Abstract
Rapid progress in nanotechnology has advanced fundamental neuroscience and innovative treatment using combined diagnostic and therapeutic applications. The atomic scale tunability of nanomaterials, which can interact with biological systems, has attracted interest in emerging multidisciplinary fields. Graphene, a two-dimensional nanocarbon, has gained increasing attention in neuroscience due to its unique honeycomb structure and functional properties. Hydrophobic planar sheets of graphene can be effectively loaded with aromatic molecules to produce a defect-free and stable dispersion. The optical and thermal properties of graphene make it suitable for biosensing and bioimaging applications. In addition, graphene and its derivatives functionalized with tailored bioactive molecules can cross the blood-brain barrier for drug delivery, substantially improving their biological property. Therefore, graphene-based materials have promising potential for possible application in neuroscience. Herein, we aimed to summarize the important properties of graphene materials required for their application in neuroscience, the interaction between graphene-based materials and various cells in the central and peripheral nervous systems, and their potential clinical applications in recording electrodes, drug delivery, treatment, and as nerve scaffolds for neurological diseases. Finally, we offer insights into the prospects and limitations to aid graphene development in neuroscience research and nanotherapeutics that can be used clinically.
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Affiliation(s)
- Ting Ye
- Department of Physiology and Pathophysiology, College of Medicine, Yanbian University, Yanji, Jilin, China
- Interdisciplinary Program of Biological Functional Molecules, College of Intergration Science, Yanbian University, Yanji, Jilin, China
- State Key Laboratory of Medical Neurobiology, Institutes of Brain Science, Fudan University, Shanghai, China
| | - Yi Yang
- Department of Physiology and Pathophysiology, College of Medicine, Yanbian University, Yanji, Jilin, China
| | - Jin Bai
- Department of Physiology and Pathophysiology, College of Medicine, Yanbian University, Yanji, Jilin, China
| | - Feng-Ying Wu
- Department of Physiology and Pathophysiology, College of Medicine, Yanbian University, Yanji, Jilin, China
- Interdisciplinary Program of Biological Functional Molecules, College of Intergration Science, Yanbian University, Yanji, Jilin, China
| | - Lu Zhang
- Department of Physiology and Pathophysiology, College of Medicine, Yanbian University, Yanji, Jilin, China
| | - Long-Yue Meng
- Department of Environmental Science, Department of Chemistry, Yanbian University, Yanji, Jilin, China
| | - Yan Lan
- Department of Physiology and Pathophysiology, College of Medicine, Yanbian University, Yanji, Jilin, China
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Moyseowicz A, Minta D, Gryglewicz G. Conductive Polymer/Graphene‐based Composites for Next Generation Energy Storage and Sensing Applications. ChemElectroChem 2023. [DOI: 10.1002/celc.202201145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
Affiliation(s)
- Adam Moyseowicz
- Department of Process Engineering and Technology of Polymer and Carbon Materials Wrocław University of Science and Technology Wybrzeże Stanisława Wyspiańskiego 27 50-370 Wrocław Poland
| | - Daria Minta
- Department of Process Engineering and Technology of Polymer and Carbon Materials Wrocław University of Science and Technology Wybrzeże Stanisława Wyspiańskiego 27 50-370 Wrocław Poland
| | - Grażyna Gryglewicz
- Department of Process Engineering and Technology of Polymer and Carbon Materials Wrocław University of Science and Technology Wybrzeże Stanisława Wyspiańskiego 27 50-370 Wrocław Poland
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Gungordu Er S, Tabish TA, Edirisinghe M, Matharu RK. Antiviral properties of porous graphene, graphene oxide and graphene foam ultrafine fibers against Phi6 bacteriophage. Front Med (Lausanne) 2022; 9:1032899. [PMID: 36507513 PMCID: PMC9730705 DOI: 10.3389/fmed.2022.1032899] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 11/07/2022] [Indexed: 11/25/2022] Open
Abstract
As the world has experienced in the Coronavirus Disease 2019 pandemic, viral infections have devastating effects on public health. Personal protective equipment with high antiviral features has become popular among healthcare staff, researchers, immunocompromised people and more to minimize this effect. Graphene and its derivatives have been included in many antimicrobial studies due to their exceptional physicochemical properties. However, scientific studies on antiviral graphene are much more limited than antibacterial and antifungal studies. The aim of this study was to produce nanocomposite fibers with high antiviral properties that can be used for personal protective equipment and biomedical devices. In this work, 10 wt% polycaprolactone-based fibers were prepared with different concentrations (0.1, 0.5, 1, 2, 4 w/w%) of porous graphene, graphene oxide and graphene foam in acetone by using electrospinning. SEM, FTIR and XRD characterizations were applied to understand the structure of fibers and the presence of materials. According to SEM results, the mean diameters of the porous graphene, graphene oxide and graphene foam nanofibers formed were around 390, 470, and 520 nm, respectively. FTIR and XRD characterization results for 2 w/w% concentration nanofibers demonstrated the presence of graphene oxide, porous graphene and graphene foam nanomaterials in the fiber. The antiviral properties of the formed fibers were tested against Pseudomonas phage Phi6. According to the results, concentration-dependent antiviral activity was observed, and the strongest viral inhibition graphene oxide-loaded nanofibers were 33.08 ± 1.21% at the end of 24 h.
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Affiliation(s)
- Seda Gungordu Er
- Department of Mechanical Engineering, University College London, London, United Kingdom
| | - Tanveer A. Tabish
- Department of Mechanical Engineering, University College London, London, United Kingdom
- Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
- Department of Engineering Science, University of Oxford Begbroke Science Park, Oxford, United Kingdom
| | - Mohan Edirisinghe
- Department of Mechanical Engineering, University College London, London, United Kingdom
| | - Rupy Kaur Matharu
- Department of Civil, Environmental and Geomatic Engineering, University College London, London, United Kingdom
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Kausar A. Conjugated polymer/nanocarbon nanocomposite—sensing properties and interactions. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2022. [DOI: 10.1080/10601325.2022.2143376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Ayesha Kausar
- NPU-NCP Joint International Research Center on Advanced Nanomaterials and Defects Engineering, Northwestern Polytechnical University, Xi'an, China
- UNESCO-UNISA Africa Chair in Nanosciences/Nanotechnology, iThemba LABS, Somerset West, South Africa
- National Center for Physics, Quaid-i-Azam University Campus, Islamabad, Pakistan
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Madej-Kiełbik L, Gzyra-Jagieła K, Jóźwik-Pruska J, Dziuba R, Bednarowicz A. Biopolymer Composites with Sensors for Environmental and Medical Applications. MATERIALS (BASEL, SWITZERLAND) 2022; 15:7493. [PMID: 36363084 PMCID: PMC9659006 DOI: 10.3390/ma15217493] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/13/2022] [Accepted: 10/21/2022] [Indexed: 06/16/2023]
Abstract
One of the biggest economic and environmental sustainability problems is the over-reliance on petroleum chemicals in polymer production. This paper presents an overview of the current state of knowledge on biopolymers combined with biosensors in terms of properties, compounding methods and applications, with a focus on medical and environmental aspects. Therefore, this article is devoted to environmentally friendly polymer materials. The paper presents an overview of the current state of knowledge on biopolymers combined with biosensors in terms of properties, compounding methods and applications, with a special focus on medical and environmental aspects. The paper presents the current state of knowledge, as well as prospects. The article shows that biopolymers made from renewable raw materials are of great interest in various fields of science and industry. These materials not only replace existing polymers in many applications, but also provide new combinations of properties for new applications. Composite materials based on biopolymers are considered superior to traditional non-biodegradable materials due to their ability to degrade when exposed to environmental factors. The paper highlights the combination of polymers with nanomaterials which allows the preparation of chemical sensors, thus enabling their use in environmental or medical applications due to their biocompatibility and sensitivity. This review focuses on analyzing the state of research in the field of biopolymer-sensor composites.
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Affiliation(s)
- Longina Madej-Kiełbik
- Lukasiewicz Research Network—Lodz Institute of Technology, 19/27 M. Sklodowskiej-Curie Str., 90-570 Lodz, Poland
| | - Karolina Gzyra-Jagieła
- Lukasiewicz Research Network—Lodz Institute of Technology, 19/27 M. Sklodowskiej-Curie Str., 90-570 Lodz, Poland
- Faculty of Material Technologies and Textile Design, Lodz University of Technology, 116 Żeromskiego Street, 90-924 Lodz, Poland
| | - Jagoda Jóźwik-Pruska
- Lukasiewicz Research Network—Lodz Institute of Technology, 19/27 M. Sklodowskiej-Curie Str., 90-570 Lodz, Poland
| | - Radosław Dziuba
- Department of World Economy and European Integration, University of Lodz, 41/43 Rewolucji 1905 Str., 90-214 Lodz, Poland
| | - Anna Bednarowicz
- Lukasiewicz Research Network—Lodz Institute of Technology, 19/27 M. Sklodowskiej-Curie Str., 90-570 Lodz, Poland
- Faculty of Material Technologies and Textile Design, Lodz University of Technology, 116 Żeromskiego Street, 90-924 Lodz, Poland
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10
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Salman G. Graphene patterned polyaniline- based NH3 gas sensor. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04501-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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11
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Liu Z, Wang J, Zhang Q, Li Z, Li Z, Cheng L, Dai F. Electrospinning Silk Fibroin/Graphene Nanofiber Membrane Used for 3D Wearable Pressure Sensor. Polymers (Basel) 2022; 14:polym14183875. [PMID: 36146023 PMCID: PMC9502556 DOI: 10.3390/polym14183875] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 09/01/2022] [Accepted: 09/09/2022] [Indexed: 12/24/2022] Open
Abstract
With the improvement of science and technology, flexible sensors have become a hot research topic. Flexible sensors have broad application in human health detection and motion detection and other fields. In this paper, the silk fibroin/graphene nanofiber membranes were prepared by double needle electrospinning. In addition, the high sensitivity of the three-dimensional composite hierarchy was obtained by superimposing a monolayer silk fibroin/graphene nanofiber membrane, which was prepared via double needle electrospinning. In addition, the three-dimensional hierarchy was encapsulated by polydimethylsiloxane to prepare a pressure sensor. The sensitivity of the pressure sensor can achieve 7.7 Pa−1. In addition, this pressure sensor has excellent durability (>2000 cycles) and shorter response times (490 ms), which has broad research prospects in human health detection and motion detection.
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Affiliation(s)
- Zulan Liu
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture, Southwest University, Chongqing 400715, China
- Chongqing Engineering Research Center of Biomaterial Fiber and Modern Textile, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
| | - Jiaxuan Wang
- Chongqing Engineering Research Center of Biomaterial Fiber and Modern Textile, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
| | - Qian Zhang
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture, Southwest University, Chongqing 400715, China
| | - Zheng Li
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture, Southwest University, Chongqing 400715, China
| | - Zhi Li
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture, Southwest University, Chongqing 400715, China
- Chongqing Engineering Research Center of Biomaterial Fiber and Modern Textile, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
| | - Lan Cheng
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture, Southwest University, Chongqing 400715, China
- Chongqing Engineering Research Center of Biomaterial Fiber and Modern Textile, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
- Correspondence: (L.C.); (F.D.)
| | - Fangyin Dai
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture, Southwest University, Chongqing 400715, China
- Chongqing Engineering Research Center of Biomaterial Fiber and Modern Textile, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
- Correspondence: (L.C.); (F.D.)
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Radhakrishnan S, Lakshmy S, Santhosh S, Kalarikkal N, Chakraborty B, Rout CS. Recent Developments and Future Perspective on Electrochemical Glucose Sensors Based on 2D Materials. BIOSENSORS 2022; 12:bios12070467. [PMID: 35884271 PMCID: PMC9313175 DOI: 10.3390/bios12070467] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 06/17/2022] [Accepted: 06/21/2022] [Indexed: 05/09/2023]
Abstract
Diabetes is a health disorder that necessitates constant blood glucose monitoring. The industry is always interested in creating novel glucose sensor devices because of the great demand for low-cost, quick, and precise means of monitoring blood glucose levels. Electrochemical glucose sensors, among others, have been developed and are now frequently used in clinical research. Nonetheless, despite the substantial obstacles, these electrochemical glucose sensors face numerous challenges. Because of their excellent stability, vast surface area, and low cost, various types of 2D materials have been employed to produce enzymatic and nonenzymatic glucose sensing applications. This review article looks at both enzymatic and nonenzymatic glucose sensors made from 2D materials. On the other hand, we concentrated on discussing the complexities of many significant papers addressing the construction of sensors and the usage of prepared sensors so that readers might grasp the concepts underlying such devices and related detection strategies. We also discuss several tuning approaches for improving electrochemical glucose sensor performance, as well as current breakthroughs and future plans in wearable and flexible electrochemical glucose sensors based on 2D materials as well as photoelectrochemical sensors.
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Affiliation(s)
- Sithara Radhakrishnan
- Centre for Nano and Material Science, Jain University, Jain Global Campus, Jakkasandra, Ramanagara, Bangalore 562 112, Karnataka, India;
| | - Seetha Lakshmy
- International and Inter University Centre for Nanoscience and Nanotechnology, Mahatma Gandhi University, Kottayam 686 560, Kerala, India; (S.L.); (S.S.); (N.K.)
| | - Shilpa Santhosh
- International and Inter University Centre for Nanoscience and Nanotechnology, Mahatma Gandhi University, Kottayam 686 560, Kerala, India; (S.L.); (S.S.); (N.K.)
| | - Nandakumar Kalarikkal
- International and Inter University Centre for Nanoscience and Nanotechnology, Mahatma Gandhi University, Kottayam 686 560, Kerala, India; (S.L.); (S.S.); (N.K.)
- School of Pure and Applied Physics, Mahatma Gandhi University, Kottayam 686 560, Kerala, India
- School of Nanoscience and Nanotechnology, Mahatma Gandhi University, Kottayam 686 560, Kerala, India
| | - Brahmananda Chakraborty
- High Pressure and Synchroton Radiation Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, Maharashtra, India
- Homi Bhabha National Institute, Mumbai 400 094, Maharashtra, India
- Correspondence: (B.C.); or (C.S.R.)
| | - Chandra Sekhar Rout
- Centre for Nano and Material Science, Jain University, Jain Global Campus, Jakkasandra, Ramanagara, Bangalore 562 112, Karnataka, India;
- Correspondence: (B.C.); or (C.S.R.)
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Li T, Shang D, Gao S, Wang B, Kong H, Yang G, Shu W, Xu P, Wei G. Two-Dimensional Material-Based Electrochemical Sensors/Biosensors for Food Safety and Biomolecular Detection. BIOSENSORS 2022; 12:bios12050314. [PMID: 35624615 PMCID: PMC9138342 DOI: 10.3390/bios12050314] [Citation(s) in RCA: 48] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 05/04/2022] [Accepted: 05/07/2022] [Indexed: 05/28/2023]
Abstract
Two-dimensional materials (2DMs) exhibited great potential for applications in materials science, energy storage, environmental science, biomedicine, sensors/biosensors, and others due to their unique physical, chemical, and biological properties. In this review, we present recent advances in the fabrication of 2DM-based electrochemical sensors and biosensors for applications in food safety and biomolecular detection that are related to human health. For this aim, firstly, we introduced the bottom-up and top-down synthesis methods of various 2DMs, such as graphene, transition metal oxides, transition metal dichalcogenides, MXenes, and several other graphene-like materials, and then we demonstrated the structure and surface chemistry of these 2DMs, which play a crucial role in the functionalization of 2DMs and subsequent composition with other nanoscale building blocks such as nanoparticles, biomolecules, and polymers. Then, the 2DM-based electrochemical sensors/biosensors for the detection of nitrite, heavy metal ions, antibiotics, and pesticides in foods and drinks are introduced. Meanwhile, the 2DM-based sensors for the determination and monitoring of key small molecules that are related to diseases and human health are presented and commented on. We believe that this review will be helpful for promoting 2DMs to construct novel electronic sensors and nanodevices for food safety and health monitoring.
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Affiliation(s)
- Tao Li
- College of Textile & Clothing, Qingdao University, No. 308 Ningxia Road, Qingdao 266071, China;
| | - Dawei Shang
- Qingdao Product Quality Testing Research Institute, No. 173 Shenzhen Road, Qingdao 266101, China;
| | - Shouwu Gao
- State Key Laboratory, Qingdao University, No. 308 Ningxia Road, Qingdao 266071, China; (S.G.); (P.X.)
| | - Bo Wang
- Qingdao Institute of Textile Fiber Inspection, No. 173 Shenzhen Road, Qingdao 266101, China; (B.W.); (W.S.)
| | - Hao Kong
- College of Chemistry and Chemical Engineering, Qingdao University, No. 308 Ningxia Road, Qingdao 266071, China; (H.K.); (G.Y.)
| | - Guozheng Yang
- College of Chemistry and Chemical Engineering, Qingdao University, No. 308 Ningxia Road, Qingdao 266071, China; (H.K.); (G.Y.)
| | - Weidong Shu
- Qingdao Institute of Textile Fiber Inspection, No. 173 Shenzhen Road, Qingdao 266101, China; (B.W.); (W.S.)
| | - Peilong Xu
- State Key Laboratory, Qingdao University, No. 308 Ningxia Road, Qingdao 266071, China; (S.G.); (P.X.)
| | - Gang Wei
- College of Chemistry and Chemical Engineering, Qingdao University, No. 308 Ningxia Road, Qingdao 266071, China; (H.K.); (G.Y.)
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14
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Lu L, Zhang Y, Chen Z, Feng F, Teng K, Zhang S, Zhuang J, An Q. Synergistic promotion of HER and OER by alloying ternary Zn-Co-Ni nanoparticles in N-doped carbon interfacial structures. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(21)63938-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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15
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Conjugated polymer nanoparticles and their nanohybrids as smart photoluminescent and photoresponsive material for biosensing, imaging, and theranostics. Mikrochim Acta 2022; 189:83. [PMID: 35118576 DOI: 10.1007/s00604-021-05153-w] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 12/13/2021] [Indexed: 02/06/2023]
Abstract
The emergence of conjugated polymers (CPs) has provided a pathway to attain smart multifunctional conjugated polymer nanoparticles (CPNs) with enhanced properties and diverse applications. CPNs based on π-extended CPs exhibit high fluorescence brightness, low cytotoxicity, excellent photostability, reactive oxygen species (ROS) generation ability, high photothermal conversion efficiency (PCE), etc. which endorse them as an excellent theranostic tool. Furthermore, the unique light-harvesting and energy transfer properties of CPNs enables their transformation into smart functional nanohybrids with augmented performance. Owing to such numerous features, simple preparation method and an easy separation process, the CPNs and their hybrids have been constantly rising as a frontrunner in the domain of medicine and much work has been done in the respective research area. This review summarizes the recent progress that has been made in the field of CPNs for biological and biomedical applications with special emphasis on biosensing, imaging, and theranostics. Following an introduction into the field, a first large section provides overview of the conventional as well as recently established synthetic methods for various types of CPNs. Then, the CPNs-based fluorometric assays for biomolecules based on different detection strategies have been described. Later on, examples of CPNs-based probes for imaging, both in vitro and in vivo using cancer cells and animal models have been explored. The next section highlighted the vital theranostic applications of CPNs and corresponding nanohybrids, mainly via imaging-guided photodynamic therapy (PDT), photothermal therapy (PTT) and drug delivery. The last section summarizes the current challenges and gives an outlook on the potential future trends on CPNs as advanced healthcare material.
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16
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In situ soft templated synthesis of polyfluorene-molybdenum oxide (PF-MoO3) nanocomposite: A nanostructure glucose sensor. KOREAN J CHEM ENG 2022. [DOI: 10.1007/s11814-021-1010-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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17
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Graphene supported poly(3-aminophenylboronic acid) surface via constant potential electrolysis for facile and sensitive paracetamol determination. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.127846] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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18
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Zhu J, Huang X, Song W. Physical and Chemical Sensors on the Basis of Laser-Induced Graphene: Mechanisms, Applications, and Perspectives. ACS NANO 2021; 15:18708-18741. [PMID: 34881870 DOI: 10.1021/acsnano.1c05806] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Laser-induced graphene (LIG) is produced rapidly by directly irradiating carbonaceous precursors, and it naturally exhibits as a three-dimensional porous structure. Due to advantages such as simple preparation, time-saving, environmental friendliness, low cost, and expanding categories of raw materials, LIG and its derivatives have achieved broad applications in sensors. This has been witnessed in various fields such as wearable devices, disease diagnosis, intelligent robots, and pollution detection. However, despite LIG sensors having demonstrated an excellent capability to monitor physical and chemical parameters, the systematic review of synthesis, sensing mechanisms, and applications of them combined with comparison against other preparation approaches of graphene is still lacking. Here, graphene-based sensors for physical, biological, and chemical detection are reviewed first, followed by the introduction of general preparation methods for the laser-induced method to yield graphene. The preparation and advantages of LIG, sensing mechanisms, and the properties of different types of emerging LIG-based sensors are comprehensively reviewed. Finally, possible solutions to the problems and challenges of preparing LIG and LIG-based sensors are proposed. This review may serve as a detailed reference to guide the development of LIG-based sensors that possess properties for future smart sensors in health care, environmental protection, and industrial production.
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Affiliation(s)
- Junbo Zhu
- Department of Chemistry, Capital Normal University, Beijing 100048, China
- Beijing Key Laboratory for Optical Materials and Photonic Devices, Beijing 100048, China
| | - Xian Huang
- Department of Biomedical Engineering, Tianjin University, Tianjin 300072, China
| | - Weixing Song
- Department of Chemistry, Capital Normal University, Beijing 100048, China
- Beijing Key Laboratory for Optical Materials and Photonic Devices, Beijing 100048, China
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19
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Li Y, Geng C, Xu X, Lv X, Fang Y, Wang N, Yang Y, Cui B. Construction of polythiophene-derivative films as a novel electrochemical sensor for highly sensitive detection of nitrite. Anal Bioanal Chem 2021; 413:6639-6647. [PMID: 34595556 DOI: 10.1007/s00216-021-03630-y] [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: 07/13/2021] [Revised: 08/08/2021] [Accepted: 08/19/2021] [Indexed: 11/30/2022]
Abstract
Herein, a novel, convenient, and highly selective electrochemical sensor for determination of nitrite based on a polythiophene-derivative film-modified glassy carbon electrode (GCE) was established. In this work, 2,5-di-thiophen-3-yl-thiazolo[5,4-d]thiazole (DTT), a novel thiophene derivative, was synthesized and used to form an original and excellent polymer film (PolyDTTF) on GCE through one-step electropolymerization for the first time. The modified electrodes were characterized by electron microscopy (SEM), Fourier transform infra-red spectroscopy (FT-IR), UV-visible spectra, Raman spectroscopy, and electrochemical technologies, in which the electrochemical sensor based on PolyDTTF was successfully constructed and demonstrated a significant electrocatalytic effect on nitrite. The influence of pH value, electrodeposition scanning times, scanning speed, and potential on the electrochemical behavior of nitrite were investigated in detail. Furthermore, the nitrite sensor exhibits excellent responses proportional to nitrite concentrations (R2 = 0.9972) over a concentration range of 5.5 × 10-9 ~ 3.5 × 10-5 M with a detection limit (LOD) of 2 nM, and has extremely good anti-interference ability for nitrite detection. This proposed sensor can be used to detect nitrite in actual samples, opening the possibility for applications in the food industry and environmental analysis.
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Affiliation(s)
- Yanping Li
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, 250353, Shandong, China
| | - Chao Geng
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, 250353, Shandong, China
| | - Xiaoyun Xu
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, 250353, Shandong, China
| | - Xiaoyi Lv
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, 250353, Shandong, China
| | - Yishan Fang
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, 250353, Shandong, China.
| | - Na Wang
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, 250353, Shandong, China
| | - Yunjun Yang
- Academy of Advanced Interdisciplinary Studies, Qilu University of Technology, Shandong Academy of Sciences, Jinan, 250353, Shandong, China.
| | - Bo Cui
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, 250353, Shandong, China.
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20
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Mohammed MQ, Ismail HK, Alesary HF, Barton S. Use of a Schiff base-modified conducting polymer electrode for electrochemical assay of Cd(II) and Pb(II) ions by square wave voltammetry. CHEMICAL PAPERS 2021. [DOI: 10.1007/s11696-021-01882-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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21
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Immanuel S, Ahmad Dar M, Sivasubramanian R, Rezaul Karim M, Kim DW, Gul R. Progress and Prospects on the Fabrication of Graphene-Based Nanostructures for Energy Storage, Energy Conversion and Biomedical Applications. Chem Asian J 2021; 16:1365-1381. [PMID: 33899344 DOI: 10.1002/asia.202100216] [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: 03/03/2021] [Revised: 04/12/2021] [Indexed: 11/10/2022]
Abstract
Graphene, a two-dimensional (2D) layered material has attracted much attention from the scientific community due to its exceptional electrical, thermal, mechanical, biological and optical properties. Hence, numerous applications utilizing graphene-based materials could be conceived in next-generation electronics, chemical and biological sensing, energy conversion and storage, and beyond. The interaction between graphene surfaces with other materials plays a vital role in influencing its properties than other bulk materials. In this review, we outline the recent progress in the production of graphene and related 2D materials, and their uses in energy conversion (solar cells, fuel cells), energy storage (batteries, supercapacitors) and biomedical applications.
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Affiliation(s)
- Susan Immanuel
- Electrochemical sensors and energy materials laboratory, PSG Institute of Advanced Studies, Peelamedu, Coimbatore, 641004, India
| | - Mushtaq Ahmad Dar
- Center of Excellence for Research in Engineering Materials (CEREM), Deanship of Scientific Research (DSR), King Saud University, Riyadh, 11421, Saudi Arabia
| | - R Sivasubramanian
- Electrochemical sensors and energy materials laboratory, PSG Institute of Advanced Studies, Peelamedu, Coimbatore, 641004, India
| | - Mohammad Rezaul Karim
- Center of Excellence for Research in Engineering Materials (CEREM), Deanship of Scientific Research (DSR), King Saud University, Riyadh, 11421, Saudi Arabia.,K.A. CARE Energy Research and Innovation Center, Riyadh, 11451, Saudi Arabia
| | - Dong-Wan Kim
- School of Civil, Environmental and Architectural Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Rukshana Gul
- Obesity Research Center, College of Medicine, King Saud University, P.O. Box 2925 (98), Riyadh, 11461, Saudi Arabia
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22
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Tran VV, Tran NHT, Hwang HS, Chang M. Development strategies of conducting polymer-based electrochemical biosensors for virus biomarkers: Potential for rapid COVID-19 detection. Biosens Bioelectron 2021; 182:113192. [PMID: 33819902 PMCID: PMC7992312 DOI: 10.1016/j.bios.2021.113192] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 03/16/2021] [Accepted: 03/18/2021] [Indexed: 12/24/2022]
Abstract
Rapid, accurate, portable, and large-scale diagnostic technologies for the detection of severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2) are crucial for controlling the coronavirus disease (COVID-19). The current standard technologies, i.e., reverse-transcription polymerase chain reaction, serological assays, and computed tomography (CT) exhibit practical limitations and challenges in case of massive and rapid testing. Biosensors, particularly electrochemical conducting polymer (CP)-based biosensors, are considered as potential alternatives owing to their large advantages such as high selectivity and sensitivity, rapid detection, low cost, simplicity, flexibility, long self-life, and ease of use. Therefore, CP-based biosensors can serve as multisensors, mobile biosensors, and wearable biosensors, facilitating the development of point-of-care (POC) systems and home-use biosensors for COVID-19 detection. However, the application of these biosensors for COVID-19 entails several challenges related to their degradation, low crystallinity, charge transport properties, and weak interaction with biomarkers. To overcome these problems, this study provides scientific evidence for the potential applications of CP-based electrochemical biosensors in COVID-19 detection based on their applications for the detection of various biomarkers such as DNA/RNA, proteins, whole viruses, and antigens. We then propose promising strategies for the development of CP-based electrochemical biosensors for COVID-19 detection.
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Affiliation(s)
- Vinh Van Tran
- Alan G. MacDiarmid Energy Research Institute, Chonnam National University, Gwangju 61186, South Korea
| | - Nhu Hoa Thi Tran
- Faculty of Materials Science and Technology, University of Science, HoChiMinh City 700000, Viet Nam; Vietnam National University, HoChiMinh City 700000, Viet Nam
| | - Hye Suk Hwang
- Alan G. MacDiarmid Energy Research Institute, Chonnam National University, Gwangju 61186, South Korea.
| | - Mincheol Chang
- Alan G. MacDiarmid Energy Research Institute, Chonnam National University, Gwangju 61186, South Korea; Department of Polymer Engineering, Graduate School, Chonnam National University, Gwangju 61186, South Korea; School of Polymer Science and Engineering, Chonnam National University, Gwangju 61186, South Korea.
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23
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Gómez IJ, Vázquez Sulleiro M, Mantione D, Alegret N. Carbon Nanomaterials Embedded in Conductive Polymers: A State of the Art. Polymers (Basel) 2021; 13:745. [PMID: 33673680 PMCID: PMC7957790 DOI: 10.3390/polym13050745] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 02/21/2021] [Accepted: 02/22/2021] [Indexed: 02/07/2023] Open
Abstract
Carbon nanomaterials are at the forefront of the newest technologies of the third millennium, and together with conductive polymers, represent a vast area of indispensable knowledge for developing the devices of tomorrow. This review focusses on the most recent advances in the field of conductive nanotechnology, which combines the properties of carbon nanomaterials with conjugated polymers. Hybrid materials resulting from the embedding of carbon nanotubes, carbon dots and graphene derivatives are taken into consideration and fully explored, with discussion of the most recent literature. An introduction into the three most widely used conductive polymers and a final section about the most recent biological results obtained using carbon nanotube hybrids will complete this overview of these innovative and beyond belief materials.
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Affiliation(s)
- I. Jénnifer Gómez
- Department of Condensed Matter Physics, Faculty of Science, Masaryk University, 61137 Brno, Czech Republic;
| | | | - Daniele Mantione
- Laboratoire de Chimie des Polymères Organiques (LCPO-UMR 5629), Université de Bordeaux, Bordeaux INP, CNRS F, 33607 Pessac, France
| | - Nuria Alegret
- POLYMAT and Departamento de Química Aplicada, University of the Basque Country, UPV/EHU, 20018 Donostia-San Sebastián, Spain
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24
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Otero TF. Towards artificial proprioception from artificial muscles constituted by self-sensing multi-step electrochemical macromolecular motors. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2020.137576] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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25
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Xu L, Zhang Y, Feng L, Li X, Cui Y, An Q. Active Basal Plane Catalytic Activity via Interfacial Engineering for a Finely Tunable Conducting Polymer/MoS 2 Hydrogen Evolution Reaction Multilayer Structure. ACS APPLIED MATERIALS & INTERFACES 2021; 13:734-744. [PMID: 33390014 DOI: 10.1021/acsami.0c20176] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The fixation of the catalyst interface is an important consideration for the design of practical applications. However, the electronic structure of MoS2 is sensitive to its embedding environment, and the catalytic performance of MoS2 catalysts may be altered significantly by the type of binding agents and interfacial structure. Interfacial engineering is an effective method for designing efficient catalysts, arising from the close contact between different components, which facilitates charge transfer and strong electronic interactions. Here, we have developed a layer-by-layer (LbL) strategy for the preparation of interfacial MoS2-based catalyst structures with two types of conducting polymers on various substrates. We demonstrate how the assembled partners in the LbL structure can significantly impact the electronic structures in MoS2. As the number of bilayers grows, using polypyrrole as a binder remarkably increases the catalytic efficacy as compared to using polyaniline. On the one hand, the ratio of S22- (or S2-), which is related to the remaining active hydrogen evolution reaction (HER) species, is further increased. On the other hand, density functional theory calculations indicate that the interfacial charge transport from the conducting polymers to MoS2 may boost the HER activity of the interfacial structure of the conducting polymer/MoS2 by decreasing the adsorption free energy of the intermediate H* at the S sites in the basal plane of MoS2. The optimized catalytic efficacy of the (conducting polymer/MoS2)n assembly peaks is obtained with 16 assembly cycles. In preparing interfacial catalytic structures, the LbL-based strategy exhibits several key advantages, including the flexibility of choosing assembly partners, the ability to fine-tune the structures with precision at the nanometer scale, and planar homogeneity at the centimeter scale. We expect that this LbL-based catalyst immobilization strategy will contribute to the fundamental understanding of the scalability and control of highly efficient electrocatalysts at the interface for practical applications.
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Affiliation(s)
- Linan Xu
- State Key Laboratory of Geological Processes & Mineral Resources, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China
- Laboratory of Composite Materials & Polymer Materials, College of Materials Engineering, North China Institute of Aerospace Engineering, Langfang 065000, China
| | - Yihe Zhang
- State Key Laboratory of Geological Processes & Mineral Resources, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China
| | - Lili Feng
- Laboratory of Composite Materials & Polymer Materials, College of Materials Engineering, North China Institute of Aerospace Engineering, Langfang 065000, China
| | - Xin Li
- Laboratory of Composite Materials & Polymer Materials, College of Materials Engineering, North China Institute of Aerospace Engineering, Langfang 065000, China
| | - Yanying Cui
- Laboratory of Composite Materials & Polymer Materials, College of Materials Engineering, North China Institute of Aerospace Engineering, Langfang 065000, China
| | - Qi An
- State Key Laboratory of Geological Processes & Mineral Resources, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China
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26
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Ali A, Jamal R, Abdiryim T. One-pot self-assembly preparation of thiol-functionalized poly(3,4-ethylenedioxythiophene) hollow nanosphere/Au composites, and their electrocatalytic properties. RSC Adv 2021; 11:33425-33430. [PMID: 35497524 PMCID: PMC9042313 DOI: 10.1039/d1ra06732j] [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: 09/07/2021] [Accepted: 09/29/2021] [Indexed: 11/21/2022] Open
Abstract
In this work, we developed a thiol-functionalized poly(3,4-ethylenedioxythiophene) hollow sphere (poly(EDOT-MeSH)/Au) polymer through a simple one-pot self-assembly method using polyvinylpyrrolidone (PVP) as a soft template. The monomer was used as both a reductant and a stabilizer to decorate gold nanoparticles (Au NPs). FTIR, XRD, EDX, SEM and TEM analyses were used to characterize the composite hollow spheres. The chemical bond between S and Au was confirmed by XPS. The electrochemical performance of the composite hollow spheres was determined by cyclic voltammetry (CV) and an ampere response timing current test. The results revealed that the poly(EDOT-MeSH)/Au hollow-sphere-based electrochemical sensor possesses excellent conductivity and high redox reversibility with detection limits (S/N = 3) of 0.2, 0.02, 0.08 and 0.05 μM in the linear ranges of 0.1–650 μM, 0.05–100 μM and 0.1–600 μM for the determination of ascorbic acid (AA), dopamine (DA), uric acid (UA) and nitrate ions (NO2−), respectively. The preparation method for these composites will further the development of this type of conducting polymer/gold nano-composite material modified electrochemical sensor for biological species. In this work, we developed a thiol-functionalized poly(3,4-ethylenedioxythiophene) hollow sphere (poly(EDOT-MeSH)/Au) polymer through a simple one-pot self-assembly method using polyvinylpyrrolidone (PVP) as a soft template.![]()
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Affiliation(s)
- Ahmat Ali
- College of Chemistry and Environmental Engineering, Xinjiang Institute of Engineering, Urumqi 830023, Xinjiang Uygur Autonomous Region, China
| | - Ruxangul Jamal
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, Xinjiang University, Urumqi 830046, People's Republic of China
| | - Tursun Abdiryim
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, Xinjiang University, Urumqi 830046, People's Republic of China
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27
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Fabrication of electrochemical immunosensor based on acid-substituted poly(pyrrole) polymer modified disposable ITO electrode for sensitive detection of CCR4 cancer biomarker in human serum. Talanta 2021; 222:121487. [DOI: 10.1016/j.talanta.2020.121487] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 07/20/2020] [Accepted: 07/29/2020] [Indexed: 02/07/2023]
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Nikolic MV, Milovanovic V, Vasiljevic ZZ, Stamenkovic Z. Semiconductor Gas Sensors: Materials, Technology, Design, and Application. SENSORS (BASEL, SWITZERLAND) 2020; 20:E6694. [PMID: 33238459 PMCID: PMC7700484 DOI: 10.3390/s20226694] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 11/12/2020] [Accepted: 11/19/2020] [Indexed: 02/07/2023]
Abstract
This paper presents an overview of semiconductor materials used in gas sensors, their technology, design, and application. Semiconductor materials include metal oxides, conducting polymers, carbon nanotubes, and 2D materials. Metal oxides are most often the first choice due to their ease of fabrication, low cost, high sensitivity, and stability. Some of their disadvantages are low selectivity and high operating temperature. Conducting polymers have the advantage of a low operating temperature and can detect many organic vapors. They are flexible but affected by humidity. Carbon nanotubes are chemically and mechanically stable and are sensitive towards NO and NH3, but need dopants or modifications to sense other gases. Graphene, transition metal chalcogenides, boron nitride, transition metal carbides/nitrides, metal organic frameworks, and metal oxide nanosheets as 2D materials represent gas-sensing materials of the future, especially in medical devices, such as breath sensing. This overview covers the most used semiconducting materials in gas sensing, their synthesis methods and morphology, especially oxide nanostructures, heterostructures, and 2D materials, as well as sensor technology and design, application in advance electronic circuits and systems, and research challenges from the perspective of emerging technologies.
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Affiliation(s)
- Maria Vesna Nikolic
- Institute for Multidisciplinary Research, University of Belgrade, 11030 Belgrade, Serbia; (M.V.N.); (Z.Z.V.)
| | | | - Zorka Z. Vasiljevic
- Institute for Multidisciplinary Research, University of Belgrade, 11030 Belgrade, Serbia; (M.V.N.); (Z.Z.V.)
| | - Zoran Stamenkovic
- IHP—Leibniz-Institut Für Innovative Mikroelektronik, 15236 Frankfurt (Oder), Germany
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Xiong S, Zhang J, Wu B, Chu J, Wang X, Zhang R, Gong M, Qu M, Li Z, Chen Z. Electrochemical Preparation of Covalently Bonded PEDOT ‐ Graphene Oxide Composite Electrochromic Materials Using Thiophene‐2‐methylanine as Bridging Group. ChemistrySelect 2020. [DOI: 10.1002/slct.202003086] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Shanxin Xiong
- College of Chemistry and Chemical Engineering Xi'an University of Science and Technology Xi'an 710054 PR China
- Key Laboratory of Coal Resources Exploration and Comprehensive Utilization Ministry of Natural Resources Xi'an 710021 PR China
| | - Jiaojiao Zhang
- College of Chemistry and Chemical Engineering Xi'an University of Science and Technology Xi'an 710054 PR China
| | - Bohua Wu
- College of Chemistry and Chemical Engineering Xi'an University of Science and Technology Xi'an 710054 PR China
| | - Jia Chu
- College of Chemistry and Chemical Engineering Xi'an University of Science and Technology Xi'an 710054 PR China
| | - Xiaoqin Wang
- College of Chemistry and Chemical Engineering Xi'an University of Science and Technology Xi'an 710054 PR China
| | - Runlan Zhang
- College of Chemistry and Chemical Engineering Xi'an University of Science and Technology Xi'an 710054 PR China
| | - Ming Gong
- College of Chemistry and Chemical Engineering Xi'an University of Science and Technology Xi'an 710054 PR China
| | - Mengnan Qu
- College of Chemistry and Chemical Engineering Xi'an University of Science and Technology Xi'an 710054 PR China
| | - Zhen Li
- College of Chemistry and Chemical Engineering Xi'an University of Science and Technology Xi'an 710054 PR China
| | - Zhenming Chen
- Guangxi Key Laboratory of Calcium Carbonate Resources Comprehensive Utilization Hezhou University Hezhou 542899 PR China
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Zamiri G, Haseeb ASMA. Recent Trends and Developments in Graphene/Conducting Polymer Nanocomposites Chemiresistive Sensors. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E3311. [PMID: 32722341 PMCID: PMC7435888 DOI: 10.3390/ma13153311] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 05/17/2020] [Accepted: 06/03/2020] [Indexed: 12/21/2022]
Abstract
The use of graphene and its derivatives with excellent characteristics such as good electrical and mechanical properties and large specific surface area has gained the attention of researchers. Recently, novel nanocomposite materials based on graphene and conducting polymers including polyaniline (PANi), polypyrrole (PPy), poly (3,4 ethyldioxythiophene) (PEDOT), polythiophene (PTh), and their derivatives have been widely used as active materials in gas sensing due to their unique electrical conductivity, redox property, and good operation at room temperature. Mixing these two materials exhibited better sensing performance compared to pure graphene and conductive polymers. This may be attributed to the large specific surface area of the nanocomposites, and also the synergistic effect between graphene and conducting polymers. A variety of graphene and conducting polymer nanocomposite preparation methods such as in situ polymerization, electropolymerization, solution mixing, self-assembly approach, etc. have been reported and utilization of these nanocomposites as sensing materials has been proven effective in improving the performance of gas sensors. Review of the recent research efforts and developments in the fabrication and application of graphene and conducting polymer nanocomposites for gas sensing is the aim of this review paper.
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Affiliation(s)
- Golnoush Zamiri
- Centre of Advanced Materials, Mechanical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - A. S. M. A. Haseeb
- Centre of Advanced Materials, Mechanical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia
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Ağın F. Voltammetric Determination of Guaifenesin in Pharmaceuticals and Urine Samples Based on Poly(Bromocresol Purple) Modified Glassy Carbon Electrode. CURR PHARM ANAL 2020. [DOI: 10.2174/1573412915666190114154434] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Introduction:
The electro-oxidation behavior of expectorant drug Guaifenesin (GUF) was
studied on poly(bromocresol purple) modified Glassy Carbon Electrode (GCE) by Cyclic Voltammetry
(CV) and Differential Pulse Voltammetry (DPV) methods.
Materials and Methods:
GCE was modified with electropolymerization of Bromocresol Purple (BP)
monomer for sensitive determination of GUF with voltammetric methods. The oxidation process of
GUF showed irreversible and diffusion controlled behavior. The linearity has been obtained in the
range from 1.00 × 10-7 to 2.00 × 10-5 M with the limit of detection 3.658 × 10-9 M for DPV in 0.1 M
phosphate buffer solution (PBS) at pH 3.0.
Results and Conclusion:
Fully validated differential pulse voltammetry was successfully applied for the
determination of GUF in pharmaceutical dosage forms and urine samples obtained satisfying results.
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Affiliation(s)
- Fatma Ağın
- Department of Analytical Chemistry, Faculty of Pharmacy, Karadeniz Technical University, Trabzon, Turkey
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32
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Self-assembled electrodes based on polyaniline grafted with reduced graphene oxide and polystyrene sulfonate. J Solid State Electrochem 2020. [DOI: 10.1007/s10008-020-04517-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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33
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Zhang X, Yu Y, Shen J, Qi W, Wang H. Design of organic/inorganic nanocomposites for ultrasensitive electrochemical detection of a cancer biomarker protein. Talanta 2020; 212:120794. [PMID: 32113556 DOI: 10.1016/j.talanta.2020.120794] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Revised: 01/19/2020] [Accepted: 01/29/2020] [Indexed: 12/12/2022]
Abstract
A new type of nanocomposite composed of carboxylated single-walled carbon nanotubes (CNTs-COOH), reduced graphene oxide (rGO), bovine serum albumin-Ag hybride (Ag@BSA), and poly(3,4-ethylenedioxythiophene) (PEDOT) was fabricated to develop an ultrasensitive electrochemical platform for the detection of carcinoembryonic antigen (CEA) as a model of biomarkers. Two steps are involved for the fabrication of the organic/inorganic nanocomposites. The Ag@BSA nanoflowers were first synthesized to be doped with CNTs-COOH and rGO followed by the adsorption of PEDOT resulting in CNTs-COOH/rGO/Ag@BSA/PEDOT. The as-prepared nanocomposites were then deposited onto an Au electrode together with subsequent immobilization of CEA antibody (anti-CEA) to construct the electrochemical immunosensor. This unique structure and composition of the developed immunosensor can expect an excellent electrochemical response. The immunosensor offers a linear relationship between the electrochemical responses and the CEA concentrations from 0.002 to 50 ng∙mL-1 with a detection limit of 1 × 10-4 ng∙mL-1. Moreover, the ultrasensitive immunoassay can detect CEA in real human serum samples, and the results are comparable to those obtained from the commercial ELISA. Therefore, this strategy can monitor diseases, offer clinical diagnosis, and may be valuable for the development of new biomedical devices.
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Affiliation(s)
- Xiaoyue Zhang
- Institute of Medicine and Materials Applied Technologies, Key Laboratory of Life-Organic Analysis, College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong, 273165, China
| | - You Yu
- Institute of Medicine and Materials Applied Technologies, Key Laboratory of Life-Organic Analysis, College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong, 273165, China
| | - Jinglin Shen
- Institute of Medicine and Materials Applied Technologies, Key Laboratory of Life-Organic Analysis, College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong, 273165, China
| | - Wei Qi
- Institute of Medicine and Materials Applied Technologies, Key Laboratory of Life-Organic Analysis, College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong, 273165, China.
| | - Hua Wang
- Institute of Medicine and Materials Applied Technologies, Key Laboratory of Life-Organic Analysis, College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong, 273165, China.
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Pethsangave DA, Khose RV, Wadekar PH, Kulal DK, Some S. One‐Pot Synthetic Approach for Magnetically Separable Graphene Nanocomposite for Dye Degradation. ChemistrySelect 2020. [DOI: 10.1002/slct.201903966] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
| | - Rahul V. Khose
- Department of Dyestuff TechnologyInstitute of Chemical Technology Matunga, Mumbai 400 019 India
| | - Pravin H. Wadekar
- Department of Dyestuff TechnologyInstitute of Chemical Technology Matunga, Mumbai 400 019 India
| | - Dnyaneshwar K. Kulal
- Department of Dyestuff TechnologyInstitute of Chemical Technology Matunga, Mumbai 400 019 India
| | - Surajit Some
- Department of Dyestuff TechnologyInstitute of Chemical Technology Matunga, Mumbai 400 019 India
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Maleki MJ, Ghasemi Y, Pourhassan-Moghaddam M, Asadi N, Dadashpour M, Abolghasem Mohammadi S, Akbarzadeh A, Zarghami N. Effect of green GO/Au nanocomposite on in-vitro amplification of human DNA. IET Nanobiotechnol 2019; 13:887-890. [PMID: 31811755 DOI: 10.1049/iet-nbt.2018.5082] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Recently nanomaterials have attracted interest for increasing efficiency of polymerase chain reaction (PCR) systems. Here, the authors report on the usefulness of green graphene oxide/gold (GO/Au) nanocomposites for enhancement of PCR reactions. In this study, green GO/Au nanocomposite was prepared with Matricaria chamomilla extract as reducing/capping agent for site-directed nucleation of Auo atoms on surface of GO sheets. The as-prepared green GO/Au nanocomposites were then characterised with UV-VIS spectrophotometer and scanning electron microscopy. Later, the effect of these nanocomposites was studied on end-point and real-time PCR employed for amplification of human glyceraldehyde-3-phosphate dehydrogenase gene. The results indicated that GO/Au nanocomposite can improve both end-point and real-time PCR methods at the optimum concentrations, possibly through interaction between GO/Au nanocomposite and the materials in PCR reaction, and through providing increased thermal convection by the GO surface as well as the Au nanostructures. In conclusion, it can be suggested that green GO/Au nanocomposite is a biocompatible and eco-friendly candidate as enhancer of in-vitro molecular amplification strategies.
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Affiliation(s)
- Mohammad Jafar Maleki
- Department of Medical Biotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Yaghoob Ghasemi
- Department of Medical Biotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Pourhassan-Moghaddam
- Department of Medical Biotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Nahideh Asadi
- Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mehdi Dadashpour
- Department of Medical Biotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Abolfazl Akbarzadeh
- Department of Chemical Engineering, Northeastern University, 360 Huntington Avenue, Boston, Massachusetts 02115-5000, USA
| | - Nosratollah Zarghami
- Department of Medical Biotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
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36
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Erbilen N, Zor E, Saf AO, Akgemci EG, Bingol H. An electrochemical chiral sensor based on electrochemically modified electrode for the enantioselective discrimination of D-/L-tryptophan. J Solid State Electrochem 2019. [DOI: 10.1007/s10008-019-04370-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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37
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Jiang X, Zhang X, Wu Y, Li Y, Pang J, Zhang H, Jiang L. Ordered-Assembly Conductive Nanowires Array with Tunable Polymeric Structure for Specific Organic Vapor Detection. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1900590. [PMID: 31066226 DOI: 10.1002/smll.201900590] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 04/29/2019] [Indexed: 06/09/2023]
Abstract
An artificial organic vapor sensor based on a finite number of 1D nanowires arrays can provide a strategy to allow classification and identification of different analytes with high efficiency, but fabricating a 1D nanowires array is challenging. Here, a coaxial Ag/polymer nanowires array is prepared as an organic vapor sensor with specific recognition, using a strategy combining superwettability-based nanofabrication and polymeric swelling-induced resistance change. Such organic vapor sensor containing commercial polymers can successfully classify and identify various organic vapors with good separation efficiency. An Ag/polymer nanowires array with synthetic polyethersulfone polymers is also fabricated, through molecular structure modification of the polymers, to distinguish the similar organic vapors of methanol and ethanol. Theoretical simulation results demonstrate introduction of specific molecular interaction between the designed polymers and organic vapors can improve the specific recognition performance of the sensors.
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Affiliation(s)
- Xiangyu Jiang
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Xiqi Zhang
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Yuchen Wu
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Yunqi Li
- Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Jinhui Pang
- Engineering Research Center of Special Engineering Plastics Ministry of Education, Jilin University, Changchun, 130012, P. R. China
| | - Haitao Zhang
- National Internet Emergency Center, Beijing, 100029, P. R. China
| | - Lei Jiang
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing, 100191, P. R. China
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38
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Kong D, Han L, Wang Z, Jiang L, Zhang Q, Wu Q, Su J, Lu C, Chen G. An electrochemical sensor based on poly(procaterol hydrochloride)/carboxyl multi-walled carbon nanotube for the determination of bromhexine hydrochloride. RSC Adv 2019; 9:11901-11911. [PMID: 35516997 PMCID: PMC9063560 DOI: 10.1039/c8ra08510b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 03/25/2019] [Indexed: 11/29/2022] Open
Abstract
Poly(procaterol hydrochloride) (p-ProH) polymeric film was successfully deposited onto the carboxyl multi-walled carbon nanotube (CMWCNT) modified glass carbon electrode (GCE) to construct a p-ProH/CMWCNT composite modified GCE. Due to the synergistic effect of p-ProH and CMWCNT in the composite, the developed sensor can enormously enhance the oxidation peak current of bromhexine hydrochloride (BrH) at ca. + 0.90 V. Based on this appearance, an electrochemical method was established for the sensitive and selective determination of BrH with differential pulse voltammetry (DPV). Various conditions affecting the peak current response of BrH were studied and optimized. Under the best conditions, the oxidation peak current of BrH is linear to its concentration in two linear dynamic ranges of 0.2–1.0 μmol L−1 (R = 0.9948) and 1.0–8.0 μmol L−1 (R = 0.9956), with a detection limit of 0.1 μmol L−1 (S/N = 3). Interference experiment indicated that the as-prepared electrochemical sensor showed wonderful selectivity to the recognition of BrH and was free from disturbance of many other electro-active substances such as dopamine, ascorbic and uric acid. Finally, the practicability of the BrH sensor was verified by the satisfactory results acquired from the BrH determination in pharmaceutical preparation and human serum. The fabrication process of the p-ProH/CMWCNT/GCE.![]()
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Affiliation(s)
- Dexian Kong
- College of Life Sciences, Fujian Agriculture and Forestry University Fuzhou Fujian 350002 China
| | - Libin Han
- College of Life Sciences, Fujian Agriculture and Forestry University Fuzhou Fujian 350002 China
| | - Zeming Wang
- College of Life Sciences, Fujian Agriculture and Forestry University Fuzhou Fujian 350002 China
| | - Lili Jiang
- College of Chemistry, Fuzhou University Fujian 350108 China
| | - Qian Zhang
- College of Life Sciences, Fujian Agriculture and Forestry University Fuzhou Fujian 350002 China
| | - Qiong Wu
- College of Life Sciences, Fujian Agriculture and Forestry University Fuzhou Fujian 350002 China
| | - Jinwei Su
- College of Life Sciences, Fujian Agriculture and Forestry University Fuzhou Fujian 350002 China
| | - Chunhua Lu
- College of Chemistry, Fuzhou University Fujian 350108 China
| | - Guonan Chen
- College of Chemistry, Fuzhou University Fujian 350108 China
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39
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Zanuy D, Fabregat G, Ferreira CA, Alemán C. A molecular dynamics study on glucose molecular recognition by a non-enzymatic selective sensor based on a conducting polymer. Phys Chem Chem Phys 2019; 21:8099-8107. [PMID: 30932123 DOI: 10.1039/c9cp00567f] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Poly(hydroxymethyl-3,4-ethylendioxythiophene) (PHMeDOT), a very electroactive polythiophene derivative bearing a dioxane ring fused onto the thiophene ring and an exocyclic hydroxymethyl substituent, is able to electrocatalyze the oxidation of glucose in the presence of interferents (e.g. dopamine, uric acid and ascorbic acid) without the assistance of an enzymatic catalyst. In this work, after demonstrating that the chronoamperometric response of such polythiophene derivatives allows discrimination of glucose from fructose, the PHMeDOTsugar recognition mechanism has been investigated using atomistic computer simulations. More specifically, molecular dynamics simulations were conducted on model systems formed by a steel surface covered with a nanometric film of PHMeDOT, which was immersed in an aqueous environment with a few explicit sugar molecules (i.e. glucose or fructose). Analyses of the trajectories indicate that glucose interacts with PHMeDOT forming a well-defined network of specific hydrogen bonds. More specifically, glucose prefers to interact as a hydrogen bonding donor using the hydroxyl group tether to the main sugar ring, while PHMeDOT acts as the hydrogen bonding acceptor. Interestingly, (glucose)O-HO(PHMeDOT) interactions involve, as hydrogen bonding acceptors, not only the oxygen atoms of the dioxane ring but also the oxygen atom of the exocyclic hydroxymethyl substituent, which is a differential trend with respect to the other polythiophene derivatives that do not exhibit sensing ability. In contrast, fructose does not present such well-defined patterns of specific interactions, especially those that are distinctive because of the exocyclic hydroxymethyl substituent, making the experimental observations understandable.
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Affiliation(s)
- David Zanuy
- Departament d'Enginyeria Química, EEBE, Universitat Politècnica de Catalunya, C/Eduard Maristany 10-14, Ed. I2, 08019 Barcelona, Spain.
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Highly sensitive amperometric detection of glutamate by glutamic oxidase immobilized Pt nanoparticle decorated multiwalled carbon nanotubes(MWCNTs)/polypyrrole composite. Biosens Bioelectron 2019; 130:307-314. [PMID: 30780080 DOI: 10.1016/j.bios.2019.02.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 01/20/2019] [Accepted: 02/03/2019] [Indexed: 01/05/2023]
Abstract
A highly sensitive and selective glutamate biosensor using glutamate Oxidase (GlUtOx) immobilized platinum nanoparticle (PtNP) decorated multiwall carbon nanotube (MWCNTs)/polypyrrole (PPy) composite on glassy carbon electrodes (GC) is demonstrated. PtNP decorated MWCNTs (Pt-MWCNTs), PPy and Pt-MWCNTs/PPy composite were characterized by Field Emission Scanning Electron Microscope (FESEM), X-ray diffraction (XRD) and Raman analysis to confirm the formation of the nanocomposite. The glutamate Oxidase (GlUtOx) was immobilized on a GC/Pt-MWCNTs/PPy and characterized by the cyclic voltammetry (CV) and impedance spectroscopy (EIS) analysis. The fabricated L-glutamate biosensor exhibited high sensitivity (723.08 µA cm-2 mM-1) with less response time (3 s) with a detection limit of 0.88 µM. The dynamic range from 10 to 100 µM with a correlation coefficient (R2) of 0.985 was observed for the L-glutamate biosensor. The analytical recovery of added L-glutamate acid (50 and 100 μM) in human serum soup were 96.1% and 97.5% respectively. The enzyme immobilized GC/Pt-MWCNTs/PPy/GlUtOx bioelectrode lost 12.6% and 23.8% of its initial activity after 30 days when stored at - 20 °C and 4 °C respectively.
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41
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A selective chemiresistive sensor for the cancer-related volatile organic compound hexanal by using molecularly imprinted polymers and multiwalled carbon nanotubes. Mikrochim Acta 2019; 186:137. [PMID: 30707323 DOI: 10.1007/s00604-019-3241-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Accepted: 01/05/2019] [Indexed: 10/27/2022]
Abstract
A chemiresistive sensor is described for the lung cancer biomarker hexanal. A composite consisting of molecularly imprinted polymer nanoparticles and multiwalled carbon nanotubes was used in the sensor that is typically operated at a voltage of 4 V and is capable of selectively sensing gaseous hexanal at room temperature. It works in the 10 to 200 ppm concentration range and has a 10 ppm detection limit (at S/N = 3). The sensor signal recovers to a value close to its starting value without the need for heating even after exposure to relatively high levels of hexanal. Graphical abstract Schematic presentation of a chemiresistive sensor for detection of hexanal, a cancer biomarker. The hexanal-imprinted polymeric nanoparticles were synthesized, mixed with multiwalled carbon nanotubes and coated on the surface of an interdigitated electrode to produce a nanocomposite chemiresistor gas sensor for hexanal.
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42
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Mitra M, Ahamed ST, Ghosh A, Mondal A, Kargupta K, Ganguly S, Banerjee D. Polyaniline/Reduced Graphene Oxide Composite-Enhanced Visible-Light-Driven Photocatalytic Activity for the Degradation of Organic Dyes. ACS OMEGA 2019; 4:1623-1635. [PMID: 31459420 PMCID: PMC6649179 DOI: 10.1021/acsomega.8b02941] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Accepted: 01/09/2019] [Indexed: 05/10/2023]
Abstract
Creation of an innovative composite photocatalyst, to advance its performance, has attracted researchers to the field of photocatalysis. In this article, a new photocatalyst based on polyaniline/reduced graphene oxide (PANI/RGO) composites has been prepared via the in situ oxidative polymerization method employing RGO as a template. For thermoelectric applications, though a higher percentage (50 wt %) of RGO has been used, for photocatalytic activity, lesser percentages (2, 5, and 8 wt %) of RGO in the composite have given a significant outcome. Furthermore, photoluminescence (PL) spectra, time-resolved fluorescence spectra, and Brunauer-Emmett-Teller surface area analyses confirmed the improved photocatalytic mechanism. PANI/RGO composites under visible light irradiation exhibit amazingly improved activity toward the degradation of cationic and anionic dyes in comparison with pristine PANI or RGO. Here, a PANI/RGO composite, with 5 wt % RGO(PG2), has emerged as the best combination with the degradation percentages of 99.68, 99.35, and 98.73 for malachite green, rhodamine B, and congo red within 15, 30, and 40 min, respectively. Experimental findings show that the introduction of RGO can relieve the agglomeration of PANI nanoparticles and enhance the light absorption of the materials due to an increased surface area. Moreover, the PG2 composite also showed excellent photocatalytic activity to reduce noxious Cr(VI). The effective removal of Cr(VI) up to 94.7% at pH 2 was observed within only 15 min. With the help of the active species trapping experiment, a plausible mechanism for the photocatalytic degradation has been proposed. The heightened activity of the as-synthesized composite compared to that of neat PANI or RGO was generally because of high concentrations of •OH radicals and partly of •O2 - and holes (h+) as concluded from the nitroblue tetrazolium probe test and photoluminescence experiment. It is hoped that the exceptional photocatalytic performance of our work makes the conducting polymer-based composite an effective alternative in wastewater treatment for industrial applications.
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Affiliation(s)
- Mousumi Mitra
- Department
of Physics and Department of Chemistry, Indian Institute
of Engineering Science and Technology, Shibpur, Howrah 711103, West Bengal, India
| | - Sk. Taheruddin Ahamed
- Department
of Physics and Department of Chemistry, Indian Institute
of Engineering Science and Technology, Shibpur, Howrah 711103, West Bengal, India
| | - Amrita Ghosh
- Department
of Physics and Department of Chemistry, Indian Institute
of Engineering Science and Technology, Shibpur, Howrah 711103, West Bengal, India
| | - Anup Mondal
- Department
of Physics and Department of Chemistry, Indian Institute
of Engineering Science and Technology, Shibpur, Howrah 711103, West Bengal, India
- E-mail: . Phone: +91 7044369052 (A.M.)
| | - Kajari Kargupta
- Department
of Chemical Engineering, Jadavpur University, Kolkata 700032, India
| | - Saibal Ganguly
- Department
of Chemical Engineering, BITS Pilani, K K Birla Goa Campus, Zuarinagar, Sancoale 403726, Goa, India
| | - Dipali Banerjee
- Department
of Physics and Department of Chemistry, Indian Institute
of Engineering Science and Technology, Shibpur, Howrah 711103, West Bengal, India
- E-mail: . Phone: +91 9830299253 (D.B.)
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Cao Q, Puthongkham P, Venton BJ. Review: New insights into optimizing chemical and 3D surface structures of carbon electrodes for neurotransmitter detection. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2019; 11:247-261. [PMID: 30740148 PMCID: PMC6366673 DOI: 10.1039/c8ay02472c] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The carbon-fiber microelectrode has been used for decades as a neurotransmitter sensor. Recently, new strategies have been developed for making carbon electrodes, including using carbon nanomaterials or pyrolyzing photoresist etched by nanolithography or 3D printing. This review summarizes how chemical and 3D surface structures of new carbon electrodes are optimized for neurotransmitter detection. There are effects of the chemical structure that are advantageous and nanomaterials are used ranging from carbon nanotube (CNT) to graphene to nanodiamond. Functionalization of these materials promotes surface oxide groups that adsorb dopamine and dopants introduce defect sites good for electron transfer. Polymer coatings such as poly(3,4-ethylenedioxythiophene) (PEDOT) or Nafion also enhance the selectivity, particularly for dopamine over ascorbic acid. Changing the 3D surface structure of an electrode increases current by adding more surface area. If the surface structure has roughness or pores on the micron scale, the electrode also acts as a thin layer cell, momentarily trapping the analyte for redox cycling. Vertically-aligned CNTs as well as lithographically-made or 3D printed pillar arrays act as thin layer cells, producing more reversible cyclic voltammograms. A better understanding of how chemical and surface structure affects electrochemistry enables rational design of electrodes. New carbon electrodes are being tested in vivo and strategies to reduce biofouling are being developed. Future studies should test the robustness for long term implantation, explore electrochemical properties of neurotransmitters beyond dopamine, and combine optimized chemical and physical structures for real-time monitoring of neurotransmitters.
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Affiliation(s)
| | | | - B. Jill Venton
- Dept. of Chemistry, University of Virginia, Charlottesville, VA 22901
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Meng Z, Stolz RM, Mendecki L, Mirica KA. Electrically-Transduced Chemical Sensors Based on Two-Dimensional Nanomaterials. Chem Rev 2019; 119:478-598. [PMID: 30604969 DOI: 10.1021/acs.chemrev.8b00311] [Citation(s) in RCA: 249] [Impact Index Per Article: 49.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Electrically-transduced sensors, with their simplicity and compatibility with standard electronic technologies, produce signals that can be efficiently acquired, processed, stored, and analyzed. Two dimensional (2D) nanomaterials, including graphene, phosphorene (BP), transition metal dichalcogenides (TMDCs), and others, have proven to be attractive for the fabrication of high-performance electrically-transduced chemical sensors due to their remarkable electronic and physical properties originating from their 2D structure. This review highlights the advances in electrically-transduced chemical sensing that rely on 2D materials. The structural components of such sensors are described, and the underlying operating principles for different types of architectures are discussed. The structural features, electronic properties, and surface chemistry of 2D nanostructures that dictate their sensing performance are reviewed. Key advances in the application of 2D materials, from both a historical and analytical perspective, are summarized for four different groups of analytes: gases, volatile compounds, ions, and biomolecules. The sensing performance is discussed in the context of the molecular design, structure-property relationships, and device fabrication technology. The outlook of challenges and opportunities for 2D nanomaterials for the future development of electrically-transduced sensors is also presented.
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Affiliation(s)
- Zheng Meng
- Department of Chemistry, Burke Laboratory , Dartmouth College , Hanover , New Hampshire 03755 , United States
| | - Robert M Stolz
- Department of Chemistry, Burke Laboratory , Dartmouth College , Hanover , New Hampshire 03755 , United States
| | - Lukasz Mendecki
- Department of Chemistry, Burke Laboratory , Dartmouth College , Hanover , New Hampshire 03755 , United States
| | - Katherine A Mirica
- Department of Chemistry, Burke Laboratory , Dartmouth College , Hanover , New Hampshire 03755 , United States
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Silva CHB, Iliut M, Muryn C, Berger C, Coldrick Z, Constantino VRL, Temperini MLA, Vijayaraghavan A. Ternary nanocomposites of reduced graphene oxide, polyaniline and hexaniobate: hierarchical architecture and high polaron formation. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2018; 9:2936-2946. [PMID: 30546990 PMCID: PMC6278754 DOI: 10.3762/bjnano.9.272] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 10/30/2018] [Indexed: 06/09/2023]
Abstract
Nanostructured systems, such as nanocomposites, are potential materials for usage in different fields since synergistic effects of their components at the nanoscale domain may improve physical/chemical properties when compared to individual phases. We report here the preparation and characterisation of a new nanocomposite composed of polyaniline (PANI), reduced graphene oxide (rGO) and hexaniobate (hexNb) nanoscrolls. Atomic force microscopy images show an interesting architecture of rGO flakes coated with PANI and decorated by hexNb. Such features are attributed to the high stability of the rGO flakes prepared at room temperature. Detailed characterisation by X-ray photoelectron and Raman spectroscopies indicates an intermediate reduction degree for the rGO component and high doping degree of the PANI chains compared to the neat polymer. The latter feature can be attributed to cooperative effects of PANI chains with rGO flakes and hexNb nanoscrolls, which promote conformational changes of the polymer backbone (secondary doping). Spectroscopic and electrochemistry data indicate a synergetic effect on the ternary nanocomposite, which is attributed to interactions between the components resulting from the morphological aspects. Therefore, the new nanocomposite presents promising properties for development of new materials in the film form on substrates for sensing or corrosion protection for example.
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Affiliation(s)
- Claudio H B Silva
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, Av. Prof. Lineu Prestes 748, São Paulo 05508-000, Brazil
- School of Materials and National Graphene Institute, The University of Manchester, Booth St E, Manchester M13 9PL, United Kingdom
- present address: Department of Physical Chemistry, Institute of Chemistry, Federal University of Bahia, Rua Barão de Jeremoabo, 147, Salvador 40170-115, Brazil
| | - Maria Iliut
- School of Materials and National Graphene Institute, The University of Manchester, Booth St E, Manchester M13 9PL, United Kingdom
| | - Christopher Muryn
- School of Chemistry and Photon Science Institute, The University of Manchester, Alan Turing Building, Oxford Rd, Manchester M13 9PY, United Kingdom
| | - Christian Berger
- School of Materials and National Graphene Institute, The University of Manchester, Booth St E, Manchester M13 9PL, United Kingdom
| | - Zachary Coldrick
- School of Electrical and Electronic Engineering, The University of Manchester, Sackville Street Building, Manchester M1 3BB, United Kingdom
| | - Vera R L Constantino
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, Av. Prof. Lineu Prestes 748, São Paulo 05508-000, Brazil
| | - Marcia L A Temperini
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, Av. Prof. Lineu Prestes 748, São Paulo 05508-000, Brazil
| | - Aravind Vijayaraghavan
- School of Materials and National Graphene Institute, The University of Manchester, Booth St E, Manchester M13 9PL, United Kingdom
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Maity D, Kumar RTR. Polyaniline Anchored MWCNTs on Fabric for High Performance Wearable Ammonia Sensor. ACS Sens 2018; 3:1822-1830. [PMID: 30168710 DOI: 10.1021/acssensors.8b00589] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Polyaniline (PANI) functionalized multiwall carbon nanotubes (MWCNTs) were prepared via in situ chemical polymerization process of aniline, in which MWCNTs were spray coated on the fabric for wearable ammonia sensor. Structural, morphological, thermal properties and wettability were analyzed by scanning electron microscope, X-ray diffraction, Raman analysis and contact angle measurement. No substantial change in base resistance of MWCNTs/PANI fabric sensor was observed for a wide range of bending (from 90° to 270°) shows excellent wearability. The sensors were exposed to 20-100 ppm ammonia vapor at room temperature. It was observed that the sensing response of PANI coated MWCNTs was enhanced than MWCNTs and PANI. The sensor has the capability to detect ammonia with high sensitivity (92% for100 ppm), excellent selectivity quick response (9 s), and recovery time (30 s). The lower detection limit (LOD) for the MWCNTs/PANI fabric sensor was found to be 200 ppb. The influence of humidity on sensing parameters was studied. Sensing response and resistance of sensor have shown excellent stability after one month. We observed that PANI have a dual role in enhancing flexibility as well as improve the sensor performance toward ammonia. The results reveal the potential application of fabric based sensor for monitoring NH3 gas under ambient conditions.
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Baig N, Saleh TA. Electrodes modified with 3D graphene composites: a review on methods for preparation, properties and sensing applications. Mikrochim Acta 2018; 185:283. [DOI: 10.1007/s00604-018-2809-3] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2018] [Accepted: 04/14/2018] [Indexed: 12/12/2022]
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Naseri M, Fotouhi L, Ehsani A. Recent Progress in the Development of Conducting Polymer-Based Nanocomposites for Electrochemical Biosensors Applications: A Mini-Review. CHEM REC 2018; 18:599-618. [PMID: 29460399 DOI: 10.1002/tcr.201700101] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Accepted: 02/05/2018] [Indexed: 01/09/2023]
Abstract
Among various immobilizing materials, conductive polymer-based nanocomposites have been widely applied to fabricate the biosensors, because of their outstanding properties such as excellent electrocatalytic activity, high conductivity, and strong adsorptive ability compared to conventional conductive polymers. Electrochemical biosensors have played a significant role in delivering the diagnostic information and therapy monitoring in a rapid, simple, and low cost portable device. This paper reviews the recent developments in conductive polymer-based nanocomposites and their applications in electrochemical biosensors. The article starts with a general and concise comparison between the properties of conducting polymers and conducting polymer nanocomposites. Next, the current applications of conductive polymer-based nanocomposites of some important conducting polymers such as PANI, PPy, and PEDOT in enzymatic and nonenzymatic electrochemical biosensors are overviewed. This review article covers an 8-year period beginning in 2010.
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Affiliation(s)
- Maryam Naseri
- Department of Chemistry, Faculty of Physics & Chemistry, Alzahra University, Tehran, Iran
| | - Lida Fotouhi
- Department of Chemistry, Faculty of Physics & Chemistry, Alzahra University, Tehran, Iran
| | - Ali Ehsani
- Department of Chemistry, Faculty of Science, University of Qom, Qom, Iran
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Cogal S, Erten Ela S, Ali AK, Celik Cogal G, Micusik M, Omastova M, Uygun Oksuz A. Polyfuran-based multi-walled carbon nanotubes and graphene nanocomposites as counter electrodes for dye-sensitized solar cells. RESEARCH ON CHEMICAL INTERMEDIATES 2018. [DOI: 10.1007/s11164-018-3309-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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