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Du B, Yin M, Yang K, Wang S, Pei Y, Luo R, Zhou S, Li H. Ultrafast Polymerization of a Self-Adhesive and Strain Sensitive Hydrogel-Based Flexible Sensor for Human Motion Monitoring and Handwriting Recognition. Polymers (Basel) 2024; 16:1595. [PMID: 38891541 PMCID: PMC11175077 DOI: 10.3390/polym16111595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Revised: 05/28/2024] [Accepted: 05/31/2024] [Indexed: 06/21/2024] Open
Abstract
Hydrogel-based flexible electronic devices have great potential in human motion monitoring, electronic skins, and human-computer interaction applications; hence, the efficient preparation of highly sensitive hydrogel-based flexible sensors is important. In the present work, the ultrafast polymerization of a hydrogel (1-3 min) was achieved by constructing a tannic acid (TA)-Fe3+ dynamic redox system, which endowed the hydrogel with good adhesion performance (the adhesion strength in wood was 17.646 kPa). In addition, the uniform dispersal ensured by incorporating polydopamine-decorated polypyrrole (PPy@PDA) into the hydrogel matrix significantly improved the hydrogel's stretching ability (575.082%). The as-prepared PAM/CS/PPy@PDA/TA hydrogel-based flexible sensor had a high-fidelity low detection limit (strain = 1%), high sensitivity at small strains (GF = 5.311 at strain = 0-8%), and fast response time (0.33 s) and recovery time (0.25 s), and it was reliably applied to accurate human motion monitoring and handwriting recognition. The PAM/CS/PPy@PDA/TA hydrogel opens new horizons for wearable electronic devices, electronic skins, and human-computer interaction applications.
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Affiliation(s)
- Bin Du
- Faculty of Printing, Packaging Engineering and Digital Media Technology, Xi’an University of Technology, Xi’an 710054, China; (B.D.); (M.Y.); (S.W.); (Y.P.); (S.Z.); (H.L.)
- Shaanxi Provincial Key Laboratory of Printing and Packaging Engineering, Xi’an University of Technology, Xi’an 710054, China;
| | - Mengwei Yin
- Faculty of Printing, Packaging Engineering and Digital Media Technology, Xi’an University of Technology, Xi’an 710054, China; (B.D.); (M.Y.); (S.W.); (Y.P.); (S.Z.); (H.L.)
- Shaanxi Provincial Key Laboratory of Printing and Packaging Engineering, Xi’an University of Technology, Xi’an 710054, China;
| | - Kenan Yang
- Shaanxi Provincial Key Laboratory of Printing and Packaging Engineering, Xi’an University of Technology, Xi’an 710054, China;
- School of Mechanical and Precision Instrument Engineering, Xi’an University of Technology, Xi’an 710054, China
| | - Sainan Wang
- Faculty of Printing, Packaging Engineering and Digital Media Technology, Xi’an University of Technology, Xi’an 710054, China; (B.D.); (M.Y.); (S.W.); (Y.P.); (S.Z.); (H.L.)
- Shaanxi Provincial Key Laboratory of Printing and Packaging Engineering, Xi’an University of Technology, Xi’an 710054, China;
| | - Yiting Pei
- Faculty of Printing, Packaging Engineering and Digital Media Technology, Xi’an University of Technology, Xi’an 710054, China; (B.D.); (M.Y.); (S.W.); (Y.P.); (S.Z.); (H.L.)
- Shaanxi Provincial Key Laboratory of Printing and Packaging Engineering, Xi’an University of Technology, Xi’an 710054, China;
| | - Rubai Luo
- Faculty of Printing, Packaging Engineering and Digital Media Technology, Xi’an University of Technology, Xi’an 710054, China; (B.D.); (M.Y.); (S.W.); (Y.P.); (S.Z.); (H.L.)
- Shaanxi Provincial Key Laboratory of Printing and Packaging Engineering, Xi’an University of Technology, Xi’an 710054, China;
| | - Shisheng Zhou
- Faculty of Printing, Packaging Engineering and Digital Media Technology, Xi’an University of Technology, Xi’an 710054, China; (B.D.); (M.Y.); (S.W.); (Y.P.); (S.Z.); (H.L.)
- Shaanxi Provincial Key Laboratory of Printing and Packaging Engineering, Xi’an University of Technology, Xi’an 710054, China;
| | - Huailin Li
- Faculty of Printing, Packaging Engineering and Digital Media Technology, Xi’an University of Technology, Xi’an 710054, China; (B.D.); (M.Y.); (S.W.); (Y.P.); (S.Z.); (H.L.)
- Shaanxi Provincial Key Laboratory of Printing and Packaging Engineering, Xi’an University of Technology, Xi’an 710054, China;
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Choi KR, Honig ML, Bühlmann P. Ion-Selective Potentiometry with Plasma-Initiated Covalent Attachment of Sensing Membranes onto Inert Polymeric Substrates and Carbon Solid Contacts. Anal Chem 2024; 96:4702-4708. [PMID: 38451778 DOI: 10.1021/acs.analchem.4c00204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2024]
Abstract
The physical delamination of the sensing membrane from underlying electrode bodies and electron conductors limits sensor lifetimes and long-term monitoring with ion-selective electrodes (ISEs). To address this problem, we developed two plasma-initiated graft polymerization methods that attach ionophore-doped polymethacrylate sensing membranes covalently to high-surface-area carbons that serve as the conducting solid contact as well as to polypropylene, poly(ethylene-co-tetrafluoroethylene), and polyurethane as the inert polymeric electrode body materials. The first strategy consists of depositing the precursor solution for the preparation of the sensing membranes onto the platform substrates with the solid contact carbon, followed by exposure to an argon plasma, which results in surface-grafting of the in situ polymerized sensing membrane. Using the second strategy, the polymeric platform substrate is pretreated with argon plasma and subsequently exposed to ambient oxygen, forming hydroperoxide groups on the surface. Those functionalities are then used for the initiation of photoinitiated graft polymerization of the sensing membrane. Attenuated total reflection-Fourier transform infrared spectroscopy, water contact angle measurements, and delamination tests confirm the covalent attachment of the in situ polymerized sensing membranes onto the polymeric substrates. Using membrane precursor solutions comprising, in addition to decyl methacrylate and a cross-linker, also 2-(diisopropylamino)ethyl methacrylate as a covalently attachable H+ ionophore and tetrakis(pentafluorophenyl)borate as ionic sites, both plasma-based fabrication methods produced electrodes that responded to pH in a Nernstian fashion, with the high selectivity expected for ionophore-based ISEs.
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Affiliation(s)
- Kwangrok R Choi
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Madeline L Honig
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Philippe Bühlmann
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
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3
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Bounegru AV, Apetrei C. Simultaneous Determination of Caffeic Acid and Ferulic Acid Using a Carbon Nanofiber-Based Screen-Printed Sensor. SENSORS (BASEL, SWITZERLAND) 2022; 22:s22134689. [PMID: 35808187 PMCID: PMC9268774 DOI: 10.3390/s22134689] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 06/19/2022] [Accepted: 06/20/2022] [Indexed: 05/06/2023]
Abstract
This work aims to achieve the simultaneous qualitative and quantitative determination of two hydroxycinnamic acids (ferulic acid and caffeic acid) from standard solutions and from a phyto-homeopathic product using a carbon nanofiber-based screen-printed sensor (CNF/SPE). The two compounds are mentioned in the manufacturer's specifications but without indicating their concentrations. The stability and reproducibility of the CNF/SPE were found to be effective and the sensitivity was high for both caffeic acid-CA (limit of detection 2.39 × 10-7 M) and ferrulic acid-FA (limit of detection 2.33 × 10-7 M). The antioxidant capacity of the compounds in the analyzed product was also determined by the DPPH (2,2-diphenyl-1-picrylhydrazyl) method. The electrochemical method was efficient and less expensive than other analytical methods; therefore, its use can be extended for the detection of these phenolic compounds in various dietary supplements or pharmaceutical products.
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Yao B, Ye Z, Lou X, Yan Q, Han Z, Dong Y, Qu S, Wang Z. Wireless Rehabilitation Training Sensor Arrays Made with Hot Screen-Imprinted Conductive Hydrogels with a Low Percolation Threshold. ACS APPLIED MATERIALS & INTERFACES 2022; 14:12734-12747. [PMID: 35230075 DOI: 10.1021/acsami.2c01630] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Herein, we propose a highly sensitive wireless rehabilitation training ball with a piezoresistive sensor array for patients with Parkinson's disease (PD). The piezoresistive material is a low percolation threshold conductive hydrogel which is formed with polypyrrole (PPy) nanofibers (NFs) as a conductive filler derived from a polydopamine (PDA) template. The proton acid doping effect and molecular template of PDA are essential for endowing PPy NFs with a high aspect ratio, leading to a low percolation threshold (∼0.78 vol %) and a low Young's 004Dodulus of 37.69 kPa and hence easy deformation. The piezoresistive sensor exhibited a static and dynamic stability of 10,000 s and 15,000 cycle times, respectively. This stability could be attributed to the increased hydrophilicity of conductive fillers, enhancing the interfacial strength between the conductive filler and the matrix. The interaction between the PDA-PPy NFs and the hydrogel matrix endows the hydrogel with toughness and ensures the stability of the device. Additionally, the microdome structure of the conductive hydrogel, produced by hot screen-imprinting, dramatically improves the sensitivity of the piezoresistive sensor (∼856.14 kPa-1). The microdome conductive hydrogel can distinguish a subtle pressure of 15.40 Pa compared to the control hydrogel without a microstructure. The highly sensitive piezoresistive sensor has the potential to monitor the hand-grip force, which is not well controlled by patients with PD. The rehabilitation training ball assembled with a sensor array on the surface and a wireless chip for communication inside is built and used to monitor the pressure in real time through the WeChat applet. Thus, this work has significantly broadened the application of hydrogel-based flexible piezoresistive sensors for human activity monitoring, which provides a promising strategy to realize next-generation electronics.
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Affiliation(s)
- Bing Yao
- State Key Lab of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Zhihao Ye
- School of Computer Science and Technology of Zhejiang Province, Zhejiang University, Hangzhou 310027, China
| | - Xiang Lou
- State Key Lab of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - QiLong Yan
- State Key Lab of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - ZheYi Han
- State Key Lab of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - YaBo Dong
- School of Computer Science and Technology of Zhejiang Province, Zhejiang University, Hangzhou 310027, China
| | - Shaoxing Qu
- State Key Laboratory of Fluid Power & Mechatronic System, Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province, Center for X-Mechanics, Zhejiang University, Hangzhou 310027, China
| | - Zongrong Wang
- State Key Lab of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
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5
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Ran F, Li C, Hao Z, Zhang X, Dai L, Si C, Shen Z, Qiu Z, Wang J. Combined bactericidal process of lignin and silver in a hybrid nanoparticle on E. coli. ADVANCED COMPOSITES AND HYBRID MATERIALS 2022; 5:1841-1851. [PMID: 35434523 PMCID: PMC9002214 DOI: 10.1007/s42114-022-00460-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 02/25/2022] [Accepted: 03/21/2022] [Indexed: 05/12/2023]
Abstract
UNLABELLED Among multiple engineered nanoparticles that have been used in the bactericidal application, silver nanoparticles (Ag NPs) are the most explored bactericidal functional materials with their high efficiency and broad-spectrum bactericidal properties. However, environmental toxicology and lack of modifiability restrict their further development. In this study, a simple and economic method was established to fabricate lignin and silver hybrid nanoparticles (Lig-Ag NPs) with bactericidal ability. Afterwards, material characterization, bactericidal evaluation, and mechanism exploration were implemented to explore the properties of Lig-Ag NPs. The results indicated that Lig-Ag NPs not only demonstrated remarkable dispersity, uniformity, and encapsulation efficiency but also possessed approximated bactericidal ability on Escherichia coli and better durability compared with the same concentration of Ag NPs on E. coli. On the other hand, flow cytometry and transcriptomic analysis were used to further explore the bactericidal mechanism of Lig-Ag NPs. The results showed that oxidative stress was the possible leading bactericidal mechanism of Lig-Ag NPs. The formation approaches of reactive oxygen species production were various including the slow release of silver ion and generation of quinone/semi-quinone radicals on account of the combined effect of lignin and silver. GRAPHICAL ABSTRACT Lig-Ag NPs exhibited remarkable dispersity, uniformity, encapsulation efficiency, and possessed approximated bactericidal ability and better durability compared with Ag NPs. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s42114-022-00460-z.
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Affiliation(s)
- Fangli Ran
- Department of Environment and Health, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050 People’s Republic of China
- Tianjin Key Laboratory of Pulp and Paper, College of Light Industry and Engineering, Tianjin University of Science and Technology, Tianjin, 300457 People’s Republic of China
| | - Chenyu Li
- Department of Environment and Health, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050 People’s Republic of China
| | - Zhenxin Hao
- Department of Environment and Health, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050 People’s Republic of China
- Tianjin Key Laboratory of Pulp and Paper, College of Light Industry and Engineering, Tianjin University of Science and Technology, Tianjin, 300457 People’s Republic of China
| | - Xinyuan Zhang
- Department of Environment and Health, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050 People’s Republic of China
- Tianjin Key Laboratory of Pulp and Paper, College of Light Industry and Engineering, Tianjin University of Science and Technology, Tianjin, 300457 People’s Republic of China
| | - Lin Dai
- Tianjin Key Laboratory of Pulp and Paper, College of Light Industry and Engineering, Tianjin University of Science and Technology, Tianjin, 300457 People’s Republic of China
| | - Chuanling Si
- Tianjin Key Laboratory of Pulp and Paper, College of Light Industry and Engineering, Tianjin University of Science and Technology, Tianjin, 300457 People’s Republic of China
| | - Zhiqiang Shen
- Department of Environment and Health, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050 People’s Republic of China
| | - Zhigang Qiu
- Department of Environment and Health, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050 People’s Republic of China
| | - Jingfeng Wang
- Department of Environment and Health, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050 People’s Republic of China
- Tianjin Key Laboratory of Pulp and Paper, College of Light Industry and Engineering, Tianjin University of Science and Technology, Tianjin, 300457 People’s Republic of China
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6
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Biomimetic oxidation of benzo[a]pyrene to a quinone metabolite as a cysteine-oxidation mediator on MWCNT-modified electrode surface. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136367] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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7
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Gandhi M, Rajagopal D, Senthil Kumar A. Facile Electrochemical Demethylation of 2-Methoxyphenol to Surface-Confined Catechol on the MWCNT and Its Efficient Electrocatalytic Hydrazine Oxidation and Sensing Applications. ACS OMEGA 2020; 5:16208-16219. [PMID: 32656443 PMCID: PMC7346242 DOI: 10.1021/acsomega.0c01846] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 06/05/2020] [Indexed: 06/01/2023]
Abstract
Owing to its biological significance, preparation of stable surface-confined catechol (CA) is a long-standing interest in electrochemistry and surface chemistry. In this connection, various chemical approaches such as covalent immobilization (using amine- and carboxylate-functionalized CA, diazotization-based coupling, and Michael addition reaction), self-assembled monolayer on gold (thiol-functionalized CA is assembled on the gold surface), CA adsorption on the ad-layer of a defect-free single-crystal Pt surface, π-π bonding, CA pendant metal complexes, and CA-functionalized polymer-modified electrodes have been reported in the literature. In general, these conventional methods are involved with a series of time-consuming synthetic procedures. Indeed, the preparation of a surface-fouling-free surface-confined system is a challenging task. Herein, we introduce a new and facile approach based on electrochemical demethylation of 2-methoxyphenol as a precursor on the graphitic surface (MWCNT) at a bias potential, 0.5 V vs Ag/AgCl in neutral pH solution. Such an electrochemical performance resulted in the development of a stable and well-defined redox peak at E o' = 0.15 (A2/C2) V vs Ag/AgCl within 10 min of preparation time in pH 7 phosphate buffer solution. Calculated surface excess (16.65 × 10-9 mol cm-2) is about 10-1000 times higher than the values reported with other preparation methods. The product (catechol) formed on the modified electrode was confirmed by collective electrochemical and physicochemical characterizations such as potential segment analysis, TEM, Raman, IR, UV-vis, GC-MS, and NMR spectroscopic techniques, and thin-layer chromatographic studies. The electrocatalytic efficiency of the surface-confined CA system was demonstrated by studying hydrazine oxidation and sensing reactions in a neutral pH solution. This new system is found to be tolerant to various interfering biochemicals such as uric acid, xanthine, hypoxanthine, glucose, nitrate, hydrogen peroxide, ascorbic acid, Cu2+, and Fe2+. Since the approach is simple, rapid, and reproducible, a variety of surface-confined CA systems can be prepared.
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Affiliation(s)
- Mansi Gandhi
- Nano
and Bioelectrochemistry Research Laboratory, Department of Chemistry,
School of Advanced Sciences, Vellore Institute
of Technology University, Vellore 632014, India
- Department
of Chemistry, School of Advanced Sciences, Vellore Institute of Technology University, Vellore 632014, India
| | - Desikan Rajagopal
- Department
of Chemistry, School of Advanced Sciences, Vellore Institute of Technology University, Vellore 632014, India
| | - Annamalai Senthil Kumar
- Nano
and Bioelectrochemistry Research Laboratory, Department of Chemistry,
School of Advanced Sciences, Vellore Institute
of Technology University, Vellore 632014, India
- Department
of Chemistry, School of Advanced Sciences, Vellore Institute of Technology University, Vellore 632014, India
- Carbon
Dioxide Research and Green Technology Centre, Vellore Institute of Technology University, Vellore Tamil Nadu 632014, India
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8
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Cocoa powder and catechins as natural mediators to modify carbon-black based screen-printed electrodes. Application to free and total glutathione detection in blood. Talanta 2020; 207:120349. [DOI: 10.1016/j.talanta.2019.120349] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 09/08/2019] [Accepted: 09/11/2019] [Indexed: 02/07/2023]
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9
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Chen YJ, Yang TH, Chang JL, Cheng WL, Kumar AS, Zen JM. A catholically pre-treated low cost screen-printed carbon electrode surface for metal compounds electrocatalyst like hydrogen evolution activity. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.02.038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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10
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A novel electrochemical assay for aspartame determination via nucleophilic reactions with caffeic acid ortho-quinone. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.01.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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11
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The Chemistry behind Catechol-Based Adhesion. Angew Chem Int Ed Engl 2018; 58:696-714. [DOI: 10.1002/anie.201801063] [Citation(s) in RCA: 325] [Impact Index Per Article: 54.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 03/12/2018] [Indexed: 11/07/2022]
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12
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Saiz-Poseu J, Mancebo-Aracil J, Nador F, Busqué F, Ruiz-Molina D. Die chemischen Grundlagen der Adhäsion von Catechol. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201801063] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- J. Saiz-Poseu
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST; Campus UAB, Bellaterra 08193 Barcelona Spanien
| | - J. Mancebo-Aracil
- Instituto de Química del Sur-INQUISUR (UNS-CONICET); Universidad Nacional del Sur; Av. Alem 1253 8000 Bahía Blanca Buenos Aires Argentinien
| | - F. Nador
- Instituto de Química del Sur-INQUISUR (UNS-CONICET); Universidad Nacional del Sur; Av. Alem 1253 8000 Bahía Blanca Buenos Aires Argentinien
| | - F. Busqué
- Dpto. de Química (Unidad Química Orgánica); UniversidadAutónoma de Barcelona, Edificio C-Facultad de Ciencias; 08193 Cerdanyola del Vallès Barcelona Spanien
| | - D. Ruiz-Molina
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST; Campus UAB, Bellaterra 08193 Barcelona Spanien
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13
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Improvement of electrochemical performances of catechol-based supercapacitor electrodes by tuning the redox potential via different-sized O-protected catechol diazonium salts. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.01.115] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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14
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Mayuri P, Kumar AS. Unexpected Electrochemical Transformation of Aminobenzene Sulfonic Acid Isomers to Respective Surface-Confined-Redox Active Quinones Bypassing Polyaniline on a MWCNT Surface. ChemElectroChem 2017. [DOI: 10.1002/celc.201600622] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Pinapeddavari Mayuri
- Nano and Bioelectrochemistry Research Laboratory; Department of Chemistry; School of Advanced Sciences; Vellore Institute of Technology University; Vellore- 632 014 India
| | - Annamalai Senthil Kumar
- Nano and Bioelectrochemistry Research Laboratory; Department of Chemistry; School of Advanced Sciences; Vellore Institute of Technology University; Vellore- 632 014 India
- Carbon dioxide Research and Green Technology Centre; Vellore Institute of Technology University; Vellore- 632 014 India
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15
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Chang WL, Kumar AS, Wang SP, Yang CH, Shih Y. Selective flow injection detection of zinc phenolsulfonate as oxidized intermediates using a pre-anodized screen printed carbon ring-disk electrode coupled with a dual electrode system. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.02.146] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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16
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Sensitive and selective determination of gallic acid in green tea samples based on an electrochemical platform of poly(melamine) film. Anal Chim Acta 2015; 901:41-50. [DOI: 10.1016/j.aca.2015.10.026] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 10/20/2015] [Accepted: 10/23/2015] [Indexed: 11/21/2022]
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17
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The effect of 3-amino benzoic acid linker and the reversal of donor–acceptor pairs on the electrochemical performance and stability of covalently bonded poly(pyrrole) nanotubes. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.09.041] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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18
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Coustan L, Comte AL, Brousse T, Favier F. MnO2 as ink material for the fabrication of supercapacitor electrodes. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2014.11.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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19
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Swetha P, Devi KSS, Kumar AS. In-situ trapping and confining of highly redox active quinoline quinones on MWCNT modified glassy carbon electrode and its selective electrocatalytic oxidation and sensing of hydrazine. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.08.128] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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20
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Palanisamy S, Karuppiah C, Chen SM, Periakaruppan P. Highly sensitive and selective amperometric nitrite sensor based on electrochemically activated graphite modified screen printed carbon electrode. J Electroanal Chem (Lausanne) 2014. [DOI: 10.1016/j.jelechem.2014.05.025] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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21
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Mogilevsky G, Hartman O, Emmons ED, Balboa A, DeCoste JB, Schindler BJ, Iordanov I, Karwacki CJ. Bottom-up synthesis of anatase nanoparticles with graphene domains. ACS APPLIED MATERIALS & INTERFACES 2014; 6:10638-10648. [PMID: 24937354 DOI: 10.1021/am502322y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Using alizarin and titanium isopropoxide, we have succeeded in preparing a hybrid form of nanostructured graphene-TiO2 following a bottom-up synthetic approach. This novel graphene-based composite offers a practical alternative to synthesizing photocatalytically active materials with maximized graphene-TiO2 interface. The molecular precursor alizarin was chosen because it efficiently binds to TiO2 through the hydroxyl groups and already possesses the graphene building block through its anthracene basis. XPS and Raman spectroscopy proved that the calcined material contained majority sp(2)-hybridized carbon that formed graphene-like clusters. XRD data showed the integrated structures maintained their anatase crystallography, therefore preserving the material's properties without going through phase transitions to rutile. The enhanced graphene and TiO2 interface was confirmed using DFT computational techniques. The photocatalytic activity of the graphene-TiO2 materials was demonstrated through degradation of methylene blue.
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Affiliation(s)
- Gregory Mogilevsky
- Booz Allen Hamilton , 4692 Millennium Drive, Belcamp, Maryland 21017, United States
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22
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Su YL, Tai CY, Zen JM. A Simple Method to Tune Up Screen-Printed Carbon Electrodes Applicable to the Design of Disposable Electrochemical Sensors. ELECTROANAL 2013. [DOI: 10.1002/elan.201300382] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Chen H, Li S, Wang S, Tan Y, Kan J. A New Catechol Biosensor Immobilized Polyphenol Oxidase by Combining Electropolymerization and Cross-Linking Process. INT J POLYM MATER PO 2013. [DOI: 10.1080/00914037.2012.761629] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Fogel R, Limson JL. Electrochemically Predicting Phenolic Substrates’ Suitability for Detection by Amperometric Laccase Biosensors. ELECTROANAL 2013. [DOI: 10.1002/elan.201200642] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Direct introduction of redox centers at activated carbon substrate based on acid-substituent-assisted diazotization. Electrochem commun 2012. [DOI: 10.1016/j.elecom.2012.09.034] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Pognon G, Cougnon C, Mayilukila D, Bélanger D. Catechol-modified activated carbon prepared by the diazonium chemistry for application as active electrode material in electrochemical capacitor. ACS APPLIED MATERIALS & INTERFACES 2012; 4:3788-3796. [PMID: 22803766 DOI: 10.1021/am301284n] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Activated carbon (Black Pearls 2000) modified with electroactive catechol groups was evaluated for charge storage application as active composite electrode material in an aqueous electrochemical capacitor. High surface area Black Pearls 2000 carbon was functionalized by introduction of catechol groups by spontaneous reduction of catechol diazonium ions in situ prepared in aqueous solution from the corresponding amine. Change in the specific surface area and pore texture of the carbon following grafting was monitored by nitrogen gas adsorption measurements. The electrochemical properties and the chemical composition of the catechol-modified carbon electrodes were investigated by cyclic voltammetry. Such carbon-modified electrode combines well the faradaic capacitance, originating from the redox activity of the surface immobilized catechol groups, to the electrochemical double layer capacitance of the high surface area Black Pearls carbon. Due to the faradaic contribution, the catechol-modified electrode exhibits a higher specific capacitance (250 F/g) than pristine carbon (150 F/g) over a potential range of -0.4 to 0.75 V in 1 M H(2)SO(4). The stability of the modified electrode evaluated by long-time charge/discharge cycling revealed a low decrease of the capacitance of the catechol-modified carbon due to the loss of the catechol redox activity. Nonetheless, it was demonstrated that the benefit of redox groups persists for 10, 000 constant current charge/discharge cycles.
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Affiliation(s)
- Grégory Pognon
- Département de Chimie, Université du Québec à Montréal, Case Postale 8888, succursale Centre-Ville, Montréal, Québec, Canada H3C 3P8
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Hadi M, Rouhollahi A, Yousefi M. Nanocrystalline graphite-like pyrolytic carbon films as electrodes for electrochemical sensing application. J Electroanal Chem (Lausanne) 2012. [DOI: 10.1016/j.jelechem.2012.04.032] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Hadi M, Rouhollahi A. Simultaneous electrochemical sensing of ascorbic acid, dopamine and uric acid at anodized nanocrystalline graphite-like pyrolytic carbon film electrode. Anal Chim Acta 2012; 721:55-60. [DOI: 10.1016/j.aca.2012.01.051] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2011] [Revised: 01/19/2012] [Accepted: 01/25/2012] [Indexed: 11/25/2022]
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Algharaibeh Z, Pickup PG. An asymmetric supercapacitor with anthraquinone and dihydroxybenzene modified carbon fabric electrodes. Electrochem commun 2011. [DOI: 10.1016/j.elecom.2010.11.036] [Citation(s) in RCA: 96] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Kumar AS, Swetha P. Electrochemical-assisted encapsulation of catechol on a multiwalled carbon nanotube modified electrode. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:6874-7. [PMID: 20411948 DOI: 10.1021/la100462r] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Electrochemical-assisted encapsulation of a neurotransmitter, catechol (CA), as nanoaggregates on a multiwalled carbon nanotube (>90% of carbon basis MWNT) modified gold electrode (Au/CA@CNT) has been demonstrated without any derivatization or electrode preactivation procedures. Characterization of the CA@CNT by transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared attenuated total reflection (FTIR/ATR) spectroscopy, and cyclic voltammetry (CV) collectively revealed stable encapsulation of the CA within strained and misalignment areas of the MWNT capsule. The Au/CA@CNT shows a couple of redox peaks centered at 0 (A1/C1) and 200 mV vs Ag/AgCl (A2/C2) due to the encapsulated (chemisorbed) and physisorbed CA moieties, respectively. The calculated chemisorbed catechol surface excess, Gamma(CA), value was 98.3 x 10(-10) mol x cm(-2). Control solution phase preparations of CA@CNTs yielded poor loading and instability problems, if it is chemically modified on the gold electrode. Electrochemical mediated oxidation of hydrazine on the Au/CA@CNT was demonstrated with an approximately 20 times increase in peak current and 200 mV reduction in the overpotential values in a pH 7 phosphate buffer solution.
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Affiliation(s)
- Annamalai Senthil Kumar
- Environmental and Analytical Chemistry Division, School of Advanced Sciences, Vellore Institute of Technology University, Vellore 632 014, India
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