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Guo Z, Liu G, Hao H, Yang J, Lei H, Shi X, Li W, Liu W. Polyaniline-graphene based composites electrode materials in supercapacitor: synthesis, performance and prospects. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2024; 36:263001. [PMID: 38537284 DOI: 10.1088/1361-648x/ad386f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 03/27/2024] [Indexed: 04/06/2024]
Abstract
Supercapacitors (SCs) have become one of the most popular energy-storage devices for high power density and fast charging/discharging capability. Polyaniline is a class of conductive polymer materials with ultra-high specific capacitance, and the excellent mechanical properties will play a key role in the research of flexible SCs. The synergistic effect between polyaniline and graphene is often used to overcome their respective inherent shortcomings, thus the high-performance polyaniline-graphene based nanocomposite electrode materials can be prepared. The development of graphene-polyaniline nanocomposites as electrode materials for SCs depends on their excellent microstructure design. However, it is still difficult to seek a balance between graphene performance and functionalization to improve the weak interfacial interaction between graphene and polyaniline. In this manuscript, the latest preparation methods, research progress and research results of graphene-polyaniline nanocomposites on SCs are reviewed, and the optimization of electrode structures and performances is discussed. Finally, the prospect of graphene-polyaniline composites is expected.
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Affiliation(s)
- Zefei Guo
- School of Materials Science and Engineering, Shanghai University of Engineering Science, Shanghai 201620, People's Republic of China
| | - Gengzheng Liu
- School of Materials Science and Engineering, Shanghai University of Engineering Science, Shanghai 201620, People's Republic of China
| | - Huilian Hao
- School of Materials Science and Engineering, Shanghai University of Engineering Science, Shanghai 201620, People's Republic of China
| | - Jun Yang
- School of Materials Science and Engineering, Shanghai University of Engineering Science, Shanghai 201620, People's Republic of China
| | - Huayu Lei
- School of Materials Science and Engineering, Shanghai University of Engineering Science, Shanghai 201620, People's Republic of China
| | - Xuerong Shi
- School of Materials Science and Engineering, Shanghai University of Engineering Science, Shanghai 201620, People's Republic of China
| | - Wenyao Li
- School of Materials Science and Engineering, Shanghai University of Engineering Science, Shanghai 201620, People's Republic of China
| | - Wenfu Liu
- College of Energy Engineering, Huanghai University, 76 Kaiyuan Road, Zhumadian, People's Republic of China
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2
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Ul Hoque MI, Holze R. Intrinsically Conducting Polymer Composites as Active Masses in Supercapacitors. Polymers (Basel) 2023; 15:polym15030730. [PMID: 36772032 PMCID: PMC9920322 DOI: 10.3390/polym15030730] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/17/2023] [Accepted: 01/20/2023] [Indexed: 02/04/2023] Open
Abstract
Intrinsically conducting polymers ICPs can be combined with further electrochemically active materials into composites for use as active masses in supercapacitor electrodes. Typical examples are inspected with particular attention to the various roles played by the constituents of the composites and to conceivable synergistic effects. Stability of composite electrode materials, as an essential property for practical application, is addressed, taking into account the observed causes and effects of materials degradation.
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Affiliation(s)
- Md. Ikram Ul Hoque
- Discipline of Chemistry, The University of Newcastle, University Drive, Callaghan, NSW 2308, Australia
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, QLD 4072, Australia
| | - Rudolf Holze
- Department of Electrochemistry, Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya nab., 199034 St. Petersburg, Russia
- Institut für Chemie, Chemnitz University of Technology, D-09107 Chemnitz, Germany
- State Key Laboratory of Materials-Oriented Chemical Engineering, School of Energy Science and Engineering, Nanjing Tech University, Nanjing 211816, China
- Correspondence:
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3
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Laffitte Y, Gray BL. Potentiometric pH Sensor Based on Flexible Screen-Printable Polyaniline Composite for Textile-Based Microfluidic Applications. MICROMACHINES 2022; 13:1376. [PMID: 36143999 PMCID: PMC9503819 DOI: 10.3390/mi13091376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 08/11/2022] [Accepted: 08/16/2022] [Indexed: 06/16/2023]
Abstract
Skin pH can be used for monitoring infections in a healing wound, the onset of dermatitis, and hydration in sports medicine, but many challenges exist in integrating conventional sensing materials into wearable platforms. We present the development of a flexible, textile-based, screen-printed electrode system for biosensing applications, and demonstrate flexible polyaniline (PANI) composite-based potentiometric sensors on a textile substrate for real-time pH measurement. The pH response of the optimized PANI/dodecylbenzene sulfonic acid/screen-printing ink composite is compared to electropolymerized and drop-cast PANI sensors via open circuit potential measurements. High sensitivity was observed for all sensors between pH 3-10, with a composite based on PANI emeraldine base, demonstrating sufficient response time and a linear sensitivity of -27.9 mV/pH. This exceeded prior flexible screen-printed pH sensors in which all parts of the sensor, including the pH sensing material, are screen-printed. Even better sensitivity was observed for a PANI emeraldine salt composite (-42.6 mV/pH), although the response was less linear. Furthermore, the sensor was integrated into a screen-printed microfluidic channel demonstrating sample isolation during measurement for wearable, micro cloth-based analytical devices. This is the first fully screen-printed flexible PANI composite pH sensor demonstrated on a textile substrate that can additionally be integrated with textile-based microfluidic channels.
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4
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Liu D, Wang J, Peng W, Wang X, Ren H, Kirk DW. The application of organic polyethylene glycol-polyaniline multi-alternating block (more than triblock) copolymer in polymer-based dielectric composites. REACT FUNCT POLYM 2022. [DOI: 10.1016/j.reactfunctpolym.2021.105139] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Beygisangchin M, Abdul Rashid S, Shafie S, Sadrolhosseini AR. Polyaniline Synthesized by Different Dopants for Fluorene Detection via Photoluminescence Spectroscopy. MATERIALS (BASEL, SWITZERLAND) 2021; 14:7382. [PMID: 34885536 PMCID: PMC8658293 DOI: 10.3390/ma14237382] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/23/2021] [Accepted: 11/26/2021] [Indexed: 12/01/2022]
Abstract
The effects of different dopants on the synthesis, optical, electrical and thermal features of polyaniline were investigated. Polyaniline (PANI) doped with p-toluene sulfonic acid (PANI-PTSA), camphor sulphonic acid (PANI-CSA), acetic acid (PANI-acetic acid) and hydrochloric acid (PANI-HCl) was synthesized through the oxidative chemical polymerization of aniline under acidic conditions at ambient temperature. Fourier transform infrared light, X-ray diffraction, UV-visible spectroscopy, field emission scanning electron microscopy, photoluminescence spectroscopy and electrical analysis were used to define physical and structural features, bandgap values, electrical conductivity and type and degree of doping, respectively. Tauc calculation reveals the optical band gaps of PANI-PTSA, PANI-CSA, PANI-acetic acid and PANI-HCl at 3.1, 3.5, 3.6 and 3.9 eV, respectively. With the increase in dopant size, crystallinity is reduced, and interchain separations and d-spacing are strengthened. The estimated conductivity values of PANI-PTSA, PANI-CSA, PANI-acetic acid and PANI-HCl are 3.84 × 101, 2.92 × 101, 2.50 × 10-2, and 2.44 × 10-2 S·cm-1, respectively. Particularly, PANI-PTSA shows high PL intensity because of its orderly arranged benzenoid and quinoid units. Owing to its excellent synthesis, low bandgap, high photoluminescence intensity and high electrical features, PANI-PTSA is a suitable candidate to improve PANI properties and electron provider for fluorene-detecting sensors with a linear range of 0.001-10 μM and detection limit of 0.26 nM.
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Affiliation(s)
- Mahnoush Beygisangchin
- Nanomaterials Processing and Technology Laboratory, Institute of Nanoscience and Nanotechnology, University Putra Malaysia, Serdang 43400, Malaysia;
- Functional Nanotechnology Devices Laboratory, Institute of Nanoscience and Nanotechnology, University Putra Malaysia, Serdang 43400, Malaysia
| | - Suraya Abdul Rashid
- Nanomaterials Processing and Technology Laboratory, Institute of Nanoscience and Nanotechnology, University Putra Malaysia, Serdang 43400, Malaysia;
| | - Suhaidi Shafie
- Functional Nanotechnology Devices Laboratory, Institute of Nanoscience and Nanotechnology, University Putra Malaysia, Serdang 43400, Malaysia
- Faculty of Engineering, University Putra Malaysia, Serdang 43400, Malaysia
| | - Amir Reza Sadrolhosseini
- Magneto-Plasmonic Laboratory, Laser and Plasma Research Institute, Shahid Beheshti University, Tehran 1983969411, Iran;
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6
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Liu D, Wang J, Gao X, Wang X, Wang H, Ren H. Preparation of polyethylene glycol-polyaniline multi-alternating block copolymer. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.124204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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7
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Park G, Kim HO, Lim JW, Park C, Yeom M, Song D, Haam S. Rapid detection of influenza A (H1N1) virus by conductive polymer-based nanoparticle via optical response to virus-specific binding. NANO RESEARCH 2021; 15:2254-2262. [PMID: 34567436 PMCID: PMC8453473 DOI: 10.1007/s12274-021-3772-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 07/22/2021] [Accepted: 07/25/2021] [Indexed: 05/28/2023]
Abstract
UNLABELLED A recurrent pandemic with unpredictable viral nature has implied the need for a rapid diagnostic technology to facilitate timely and appropriate countermeasures against viral infections. In this study, conductive polymer-based nanoparticles have been developed as a tool for rapid diagnosis of influenza A (H1N1) virus. The distinctive property of a conductive polymer that transduces stimulus to respond, enabled immediate optical signal processing for the specific recognition of H1N1 virus. Conductive poly(aniline-co-pyrrole)-encapsulated polymeric vesicles, functionalized with peptides, were fabricated for the specific recognition of H1N1 virus. The low solubility of conductive polymers was successfully improved by employing vesicles consisting of amphiphilic copolymers, facilitating the viral titer-dependent production of the optical response. The optical response of the detection system to the binding event with H1N1, a mechanical stimulation, was extensively analyzed and provided concordant information on viral titers of H1N1 virus in 15 min. The specificity toward the H1N1 virus was experimentally demonstrated via a negative optical response against the control group, H3N2. Therefore, the designed system that transduces the optical response to the target-specific binding can be a rapid tool for the diagnosis of H1N1. ELECTRONIC SUPPLEMENTARY MATERIAL Supplementary material (Table S1 and Figs. S1-S8) is available in the online version of this article at 10.1007/s12274-021-3772-6.
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Affiliation(s)
- Geunseon Park
- Department of Chemical & Biomolecular Engineering, Yonsei University, Seoul, 03722 Republic of Korea
| | - Hyun-Ouk Kim
- Division of Chemical Engineering and Bioengineering College of Art, Culture and Engineering, Kangwon National University, Chuncheon-si, Gangwon-do, 24341 Republic of Korea
- Biohealth-machinery Convergence Engineering, Kangwon National University, Chuncheon, Gangwon-do, 24341 Republic of Korea
| | - Jong-Woo Lim
- Department of Chemical & Biomolecular Engineering, Yonsei University, Seoul, 03722 Republic of Korea
| | - Chaewon Park
- Department of Chemical & Biomolecular Engineering, Yonsei University, Seoul, 03722 Republic of Korea
| | - Minjoo Yeom
- College of Pharmacy, Korea University, Sejong, 30019 Republic of Korea
| | - Daesub Song
- College of Pharmacy, Korea University, Sejong, 30019 Republic of Korea
| | - Seungjoo Haam
- Department of Chemical & Biomolecular Engineering, Yonsei University, Seoul, 03722 Republic of Korea
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8
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Beygisangchin M, Abdul Rashid S, Shafie S, Sadrolhosseini AR, Lim HN. Preparations, Properties, and Applications of Polyaniline and Polyaniline Thin Films-A Review. Polymers (Basel) 2021; 13:2003. [PMID: 34207392 PMCID: PMC8234317 DOI: 10.3390/polym13122003] [Citation(s) in RCA: 88] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 05/28/2021] [Accepted: 05/30/2021] [Indexed: 12/18/2022] Open
Abstract
Polyaniline (PANI) is a famous conductive polymer, and it has received tremendous consideration from researchers in the field of nanotechnology for the improvement of sensors, optoelectronic devices, and photonic devices. PANI is doped easily by different acids and dopants because of its easy synthesis and remarkable environmental stability. This review focuses on different preparation processes of PANI thin film by chemical and physical methods. Several features of PANI thin films, such as their magnetic, redox, and antioxidant, anti-corrosion, and electrical and sensing properties, are discussed in this review. PANI is a highly conductive polymer. Given its unique properties, easy synthesis, low cost, and high environmental stability in various applications such as electronics, drugs, and anti-corrosion materials, it has attracted extensive attention. The most important PANI applications are briefly reviewed at the end of this review.
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Affiliation(s)
- Mahnoush Beygisangchin
- Material Processing and Technology Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia;
- Functional Device Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia; (S.S.); (H.N.L.)
| | - Suraya Abdul Rashid
- Material Processing and Technology Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia;
| | - Suhaidi Shafie
- Functional Device Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia; (S.S.); (H.N.L.)
- Faculty of Engineering, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia
| | - Amir Reza Sadrolhosseini
- Magneto-Plasmonic Lab, Laser and Plasma Research Institute, Shahid Beheshti University, Tehran 1983969411, Iran
| | - Hong Ngee Lim
- Functional Device Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia; (S.S.); (H.N.L.)
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9
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Licciardello M, Ciardelli G, Tonda-Turo C. Biocompatible Electrospun Polycaprolactone-Polyaniline Scaffold Treated with Atmospheric Plasma to Improve Hydrophilicity. Bioengineering (Basel) 2021; 8:24. [PMID: 33668465 PMCID: PMC7918921 DOI: 10.3390/bioengineering8020024] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 02/05/2021] [Accepted: 02/09/2021] [Indexed: 11/28/2022] Open
Abstract
Conductive polymers (CPs) have recently been applied in the development of scaffolds for tissue engineering applications in attempt to induce additional cues able to enhance tissue growth. Polyaniline (PANI) is one of the most widely studied CPs, but it requires to be blended with other polymers in order to be processed through conventional technologies. Here, we propose the fabrication of nanofibers based on a polycaprolactone (PCL)-PANI blend obtained using electrospinning technology. An extracellular matrix-like fibrous substrate was obtained showing a good stability in the physiological environment (37 °C in PBS solution up 7 days). However, since the high hydrophobicity of the PCL-PANI mats (133.5 ± 2.2°) could negatively affect the biological response, a treatment with atmospheric plasma was applied on the nanofibrous mats, obtaining a hydrophilic surface (67.1 ± 2°). In vitro tests were performed to confirm the viability and the physiological-like morphology of human foreskin fibroblast (HFF-1) cells cultured on the plasma treated PCL-PANI nanofibrous scaffolds.
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Affiliation(s)
- Michela Licciardello
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, 10129 Turin, Italy; (M.L.); (G.C.)
- Polito BIOMedLAB, Politecnico di Torino, 10129 Turin, Italy
- Interuniversity Center for the Promotion of the 3Rs Principles in Teaching and Research, 56122 Pisa, Italy
| | - Gianluca Ciardelli
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, 10129 Turin, Italy; (M.L.); (G.C.)
- Polito BIOMedLAB, Politecnico di Torino, 10129 Turin, Italy
- Interuniversity Center for the Promotion of the 3Rs Principles in Teaching and Research, 56122 Pisa, Italy
- CNR-IPCF, National Research Council-Institute for Chemical and Physical Processes, 56124 Pisa, Italy
| | - Chiara Tonda-Turo
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, 10129 Turin, Italy; (M.L.); (G.C.)
- Polito BIOMedLAB, Politecnico di Torino, 10129 Turin, Italy
- Interuniversity Center for the Promotion of the 3Rs Principles in Teaching and Research, 56122 Pisa, Italy
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10
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Xu J, Ge L, Zhou Y, Jiang G, Li L, Li Y, Li Y. Insights into N, P, S multi-doped Mo 2C/C composites as highly efficient hydrogen evolution reaction catalysts. NANOSCALE ADVANCES 2020; 2:3334-3340. [PMID: 36134296 PMCID: PMC9419526 DOI: 10.1039/d0na00335b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 06/02/2020] [Indexed: 05/06/2023]
Abstract
Heteroatom doping has been proved to be an effective strategy to optimize the activity of hydrogen evolution reaction (HER) catalysts. Herein, we report N, P, S multi-doped Mo2C/C composites exhibiting highly efficient HER performance in acidic solution, which are facilely fabricated via annealing of N, P, S-containing MoO x -polyaniline (MoO x -PANI) hybrid precursors. The optimized N, P, S multi-doped Mo2C/C catalyst with a moderate P dopant level (NPS-Mo2C/C-0.5) exhibits excellent performance with an overpotential of 53 mV to achieve a current density of 20 mA cm-2, a Tafel slope of 72 mV dec-1 and good stability in acidic electrolytes. Based on the study of XPS, EPR and 31P MAS NMR, the excellent electrocatalytic performance could be attributed to the effective electronic configuration modulation of both Mo2C nanorods and the carbon matrix, derived from stronger synergistic N, P, S multi-doping coupling effects. This work provides a promising methodology for the design and fabrication of multi-doped transition metal based electrocatalysts via electronic structure engineering.
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Affiliation(s)
- Jieyu Xu
- Lab of Low-Dimensional Materials Chemistry, Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology Shanghai 200237 China
| | - Lin Ge
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences Taiyuan 030001 China
| | - Yajun Zhou
- Lab of Low-Dimensional Materials Chemistry, Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology Shanghai 200237 China
| | - Guangyu Jiang
- Lab of Low-Dimensional Materials Chemistry, Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology Shanghai 200237 China
| | - Liang Li
- Lab of Low-Dimensional Materials Chemistry, Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology Shanghai 200237 China
| | - Yunheng Li
- Lab of Low-Dimensional Materials Chemistry, Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology Shanghai 200237 China
| | - Yongsheng Li
- Lab of Low-Dimensional Materials Chemistry, Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology Shanghai 200237 China
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11
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The First Stages of Chemical and Electrochemical Aniline Oxidation—Spectroscopic Comparative Study. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10062091] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
There are several types of aniline oligomers that can be formed in the early stages of aniline oxidation: linear oligomers with repeating units joined in para positions, and various branched and polycyclic oligomers, being the two most important groups. The fraction of these different oligomeric groups depends upon the reaction conditions of aniline oxidation. The aim of this study was to analyze the first products of the chemical and electrochemical oxidation of aniline at the (starting) pH 1 and 7, in order to specify the conditions of the formation of phenazine-like oligomers, and to test the theory that they have an important role in polyaniline film formation. We have confirmed that phenazine-like oligomers do not form at pH 1, neither in the chemical nor the electrochemical oxidation of aniline; however, they form in both chemical and electrochemical oxidation of aniline at pH 7. Phenazine-like oligomers are thus definitely not necessary intermediates for PANI film formation, not even in the chemical polymerization of aniline. Finally, the redox behavior of phenazine-like oligomers was demonstrated in a medium at pH 1.
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12
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Comparative Study on the Effect of Protonation Control for Resistive Gas Sensor Based on Close-Packed Polypyrrole Nanoparticles. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10051850] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Conducting polymers are often used as sensor electrodes due to their conjugated chain structure, which leads to high sensitivity and rapid response at room temperature. Numerous studies have been conducted on the structures of conducting polymer nanomaterials to increase the active surface area for the target materials. However, studies on the control of the chemical state of conducting polymer chains and the modification of the sensing signal transfer with these changes have not been reported. In this work, polypyrrole nanoparticles (PPyNPs), where is PPy is a conducting polymer, are applied as a sensor transducer to analyze the chemical sensing ability of the electrode. In particular, the protonation of PPy is adjusted by chemical methods to modify the transfer sensing signals with changes in the polymer chain structure. The PPyNPs that were modified at pH 1 exhibit high sensitivity to the target analyte (down to 1 ppb of NH3) with short response and recovery times of less than 20 s and 50 s, respectively, at 25 °C.
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Cho K, Jang J, Lee JS. Comparative Study on the Formation and Oxidation-Level Control of Three-Dimensional Conductive Nanofilms for Gas Sensor Applications. ACS OMEGA 2020; 5:2992-2999. [PMID: 32095722 PMCID: PMC7033957 DOI: 10.1021/acsomega.9b03947] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Accepted: 01/27/2020] [Indexed: 05/06/2023]
Abstract
Investment in wearable monitoring systems is increasing rapidly for realizing their practical applications, for example, in medical treatment, sports, and security systems. However, existing wearable monitoring systems are designed to measure a real-time physical signal and abnormal conditions rather than harmful environmental characteristics. In this study, a flexible chemical sensor electrode based on a three-dimensional conductive nanofilm (3D CNF) is fabricated via facile polymerization with temperature control. The morphology and chemical state of the 3D CNF are modified via electrochemical doping control to increase the carrier mobility and the active surface area of the sensor electrode. The sensor electrode is highly sensitive (up to 1 ppb), selective, and stable for an analyte (NH3) at room temperature owing to the three-dimensional morphology of polypyrrole and the oxidation-level control.
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Affiliation(s)
- Kyung
Hee Cho
- School
of Chemical and Biological Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-742, Republic
of Korea
| | - Jyongsik Jang
- School
of Chemical and Biological Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-742, Republic
of Korea
- E-mail: . Phone: +82-2-880-7069. Fax: +82-2-880-1604 (J.J.)
| | - Jun Seop Lee
- Department
of Materials Science and Engineering, Gachon
University, 1342 Seongnam-Daero, Sujeong-Gu, Seongnam-Si, Gyeonggi-Do 13120, Republic of Korea
- E-mail: . Phone: +82-31-750-5814. Fax: +82-31-750-5389 (J.S.L.)
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