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Wang Y, Liu R, Ma Y, Shen X, Wang D. Electrodeposition of Metal Nanoparticles inside Carbon Nanopipettes for Sensing Applications. Anal Chem 2022; 94:16987-16991. [PMID: 36449549 DOI: 10.1021/acs.analchem.2c04449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Conductive nanopipettes offer promising confined spaces to enable advanced electrochemical sensing applications in small spaces. Herein, a series of metal-decorated carbon nanopipettes (CNPs) were developed, in which Au, Ag, and Pt are modified at the inner walls of CNPs by a simple electrodeposition method. The fabricated tips show good sensing performances for a variety of important analytes, such as glucose, hydrogen peroxide, and chloride and hydrogen ions in biological and catalytic systems. This simple and effective approach can be further extended to prepare other functionalized nanopipette electrodes toward more versatile and powerful measurements in electrochemical sensing and imaging applications.
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Affiliation(s)
- Yuhuan Wang
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing100049, P. R. China
| | - Rujia Liu
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing100049, P. R. China
| | - Yingfei Ma
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing100049, P. R. China
| | - Xiaoyue Shen
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing100049, P. R. China
| | - Dengchao Wang
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing100049, P. R. China
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2
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Mourdikoudis S, Antonatos N, Mazánek V, Marek I, Sofer Z. Simple Bottom-Up Synthesis of Bismuthene Nanostructures with a Suitable Morphology for Competitive Performance in the Electrocatalytic Nitrogen Reduction Reaction. Inorg Chem 2022; 61:5524-5538. [PMID: 35344664 DOI: 10.1021/acs.inorgchem.1c03938] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Nitrogen reduction to ammonia under ambient conditions has received important attention, in which high-performing catalysts are sought. A new, facile, and seedless solvothermal method based on a high-temperature reduction route has been developed in this work for the production of bismuthene nanostructures with excellent performance in the electrocatalytic nitrogen reduction reaction (NRR). Different reaction conditions were tested, such as the type of solvent, surfactant, reducing agent, reaction temperature, and time, as well as bismuth precursor source, resulting in distinct particle morphologies. Two-dimensional sheet-like structures and small particles displayed very high electrocatalytic activity, attributed to the abundance of tips, edges, and high surface area. NRR experiments resulted in an ammonia yield of 571 ± 0.1 μg h-1 cm-2 with a respective Faradaic efficiency of 7.94 ± 0.2% vs Ag/AgCl. The easy implementation of the synthetic reaction to produce Bi nanostructures facilitates its potential scale up to larger production yields.
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Affiliation(s)
- Stefanos Mourdikoudis
- Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Nikolas Antonatos
- Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Vlastimil Mazánek
- Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Ivo Marek
- Central Laboratories, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Zdeněk Sofer
- Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Czech Republic
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3
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Steady-state voltammetric characterization and simulation-aided study of the mass transfer enhancement at conical W/WO2 ultramicroelectrodes. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2021.139524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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4
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Zhu Y, Tang H, Wang H, Li Y. In Situ SERS Monitoring of the Plasmon-Driven Catalytic Reaction by Using Single Ag@Au Nanowires as Substrates. Anal Chem 2021; 93:11736-11744. [PMID: 34461733 DOI: 10.1021/acs.analchem.1c01926] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Single nanowires (NWs), as a kind of new surface-enhanced Raman scattering (SERS) substrates, have received extensive concern owing to their distinctive properties and distinct advantages. In this contribution, single Ag nanowires (AgNWs) and single Au-coated AgNWs (Ag@AuNWs) were fabricated by the laser-assisted pulling method and the galvanic replacement reaction, respectively. The prepared single Ag@AuNWs show both high SERS activity and catalytic activity through in situ monitoring and assessing the plasmon-driven surface-catalytic reaction of 4-nitrothiophenol (4-NTP) dimerizing to 4,4'-dimercaptoazobenzene and the reduction reaction of 4-NTP to para-aminothiophenol, respectively. It was found that the intensity of the Raman peak was affected greatly by the laser power, and the Raman peak could still be observed at 0.05% power under mild conditions (633 nm wavelength) in this single nanowire system. From the Raman spectrum, the SERS enhancement factor (EF) of 5.4 × 104 can be obtained, and the EF value of 1.3 × 109 can be reached at optimal conditions. Results have shown that single Ag@AuNWs can be utilized as a good platform for SERS applications with high sensitivity, stability, and reproducibility, which will benefit SERS-based research at the single entity level.
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Affiliation(s)
- Yanyan Zhu
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P.R. China
| | - Haoran Tang
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P.R. China
| | - Hao Wang
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P.R. China
| | - Yongxin Li
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P.R. China
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5
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Kell DB. A protet-based, protonic charge transfer model of energy coupling in oxidative and photosynthetic phosphorylation. Adv Microb Physiol 2021; 78:1-177. [PMID: 34147184 DOI: 10.1016/bs.ampbs.2021.01.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Textbooks of biochemistry will explain that the otherwise endergonic reactions of ATP synthesis can be driven by the exergonic reactions of respiratory electron transport, and that these two half-reactions are catalyzed by protein complexes embedded in the same, closed membrane. These views are correct. The textbooks also state that, according to the chemiosmotic coupling hypothesis, a (or the) kinetically and thermodynamically competent intermediate linking the two half-reactions is the electrochemical difference of protons that is in equilibrium with that between the two bulk phases that the coupling membrane serves to separate. This gradient consists of a membrane potential term Δψ and a pH gradient term ΔpH, and is known colloquially as the protonmotive force or pmf. Artificial imposition of a pmf can drive phosphorylation, but only if the pmf exceeds some 150-170mV; to achieve in vivo rates the imposed pmf must reach 200mV. The key question then is 'does the pmf generated by electron transport exceed 200mV, or even 170mV?' The possibly surprising answer, from a great many kinds of experiment and sources of evidence, including direct measurements with microelectrodes, indicates it that it does not. Observable pH changes driven by electron transport are real, and they control various processes; however, compensating ion movements restrict the Δψ component to low values. A protet-based model, that I outline here, can account for all the necessary observations, including all of those inconsistent with chemiosmotic coupling, and provides for a variety of testable hypotheses by which it might be refined.
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Affiliation(s)
- Douglas B Kell
- Department of Biochemistry and Systems Biology, Institute of Systems, Molecular and Integrative, Biology, University of Liverpool, Liverpool, United Kingdom; The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Lyngby, Denmark.
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6
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Single gold nanoclusters: Formation and sensing application for isonicotinic acid hydrazide detection. Talanta 2020; 220:121376. [PMID: 32928402 DOI: 10.1016/j.talanta.2020.121376] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 06/29/2020] [Accepted: 07/02/2020] [Indexed: 01/23/2023]
Abstract
Nano-sized electrodes have their special advantages for sensing applications, such as small overall dimension, fast response and low background current. In this work, single gold nanoclusters (AuNCs) were controllably prepared on single Pt nanoelectrode surface by electrodeposition method. The AuNCs covered Pt nanoelectrode (AuNCs/PtNE) had steady-state voltammetric response in redox species solution, which was similar to micro-/nano-sized electrodes. It was interesting to find isonicotinic acid hydrazide (INH, also known as isoniazid) showed good electrochemical response on AuNCs/PtNE surface, which had investigated carefully by square wave voltammetry (SWV) and chronoamperometry. Moreover, the prepared single AuNCs/PtNEs showed the capability for INH sensing with good sensitivity, reproducibility and selectivity, which was demonstrated for INH detection in human urine samples.
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7
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Kazemi R, Tarolla NE, Dick JE. Ultrasensitive Electrochemistry by Radical Annihilation Amplification in a Solid–Liquid Microgap. Anal Chem 2020; 92:16260-16266. [DOI: 10.1021/acs.analchem.0c04183] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Rezvan Kazemi
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Nicole E. Tarolla
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Jeffrey E. Dick
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
- Lineberger Comprehensive Cancer Center, School of Medicine, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
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8
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Gao Y, Feng B, Miao L, Chen Y, Di J. Determination of Cr(III) ions based on plasmonic sensing and anodic stripping voltammetry with amplification of Ag nanoparticles. Microchem J 2020. [DOI: 10.1016/j.microc.2020.104995] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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9
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Wei H, Hua H, Zhu Y, Li Y. Palladium-Coated Single Silver Nanowire Electrodes: Size-Dependent Voltammetry, Enhanced Chemical Stability, and High Performance for Methanol Oxidation. Chemistry 2020; 26:10406-10410. [PMID: 32293765 DOI: 10.1002/chem.202000851] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Indexed: 11/08/2022]
Abstract
Silver nanowires (AgNWs) have been extensively studied as promising nanomaterials in optics, next-generation flexible electronics, and energy-related fields, but the stability and the properties at single-nanowire level still need to be investigated carefully. We have successfully prepared single palladium@silver nanowire electrodes (Pd@AgNWEs) by using a laser-assisted pulling method, followed by a galvanic replacement reaction (GRR). The results show that the chemical stability of AgNWs can be improved greatly by coating a small amount of Pd, and the Pd@AgNWEs exhibit superior electrocatalytic performance in methanol oxidation. This work can give us a new insight to investigate the performance of devices/catalysts at the single-particle/nanowire level that will benefit research in flexible electronics and energy-related fields.
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Affiliation(s)
- Haifeng Wei
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, P. R. China
| | - Hongmei Hua
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, P. R. China
| | - Yanyan Zhu
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, P. R. China
| | - Yongxin Li
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, P. R. China
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10
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Ying YL, Wang J, Leach AR, Jiang Y, Gao R, Xu C, Edwards MA, Pendergast AD, Ren H, Weatherly CKT, Wang W, Actis P, Mao L, White HS, Long YT. Single-entity electrochemistry at confined sensing interfaces. Sci China Chem 2020. [DOI: 10.1007/s11426-020-9716-2] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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11
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Chen W, Wang H, Tang H, Yang C, Li Y. Unique Voltammetry of Silver Nanoparticles: From Single Particle to Aggregates. Anal Chem 2019; 91:14188-14191. [PMID: 31638365 DOI: 10.1021/acs.analchem.9b03372] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Understanding the electrooxidation process of metal nanoparticles (NPs) is very important because they have showed wide applications in electrocatalysis, sensing, and nanoelectronics. In this letter, we designed a strategy to investigate the anodic stripping voltammetry (ASV) of silver oxidation at single NP level and aggregation state by using gold single nanoelectrodes (SNEs) and ultramicroelectrodes. Results showed that the ASV peak potential and shape were significantly affected by the diameter and aggregation degree of the Ag NPs: symmetrical-peak shape, two-peak shape, and asymmetrical-peak shape appeared when Ag NPs changed from the single particle state to the large-aggregation state, and size-dependent ASVs for Ag NPs oxidation were also observed. These findings can help us deeply understand the metal NPs oxidation process and will benefit the related applications.
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Affiliation(s)
- Wei Chen
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science , Anhui Normal University , Wuhu 241000 , P.R. China
| | - Hao Wang
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science , Anhui Normal University , Wuhu 241000 , P.R. China
| | - Haoran Tang
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science , Anhui Normal University , Wuhu 241000 , P.R. China
| | - Cheng Yang
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science , Anhui Normal University , Wuhu 241000 , P.R. China
| | - Yongxin Li
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science , Anhui Normal University , Wuhu 241000 , P.R. China
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12
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Aoki KJ, Chen J, Wang R. Stripped Charge of Ag Less than Deposited one Owing to Negative Capacitance Caused by Redox Reactions. ELECTROANAL 2019. [DOI: 10.1002/elan.201800873] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Jingyuan Chen
- Department of Applied PhysicsUniversity of Fukui 3-9-1 Bunkyo Fukui 910-0017 Japan
| | - Ru Wang
- Department of Applied PhysicsUniversity of Fukui 3-9-1 Bunkyo Fukui 910-0017 Japan
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13
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Xi Y, Ji B, Guo Z, Li W, Liu J. Fabrication and Characterization of Micro-Nano Electrodes for Implantable BCI. MICROMACHINES 2019; 10:mi10040242. [PMID: 30979081 PMCID: PMC6523908 DOI: 10.3390/mi10040242] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 03/29/2019] [Accepted: 04/08/2019] [Indexed: 02/07/2023]
Abstract
Signal recording and stimulation with high spatial and temporal resolution are of increasing interest with the development of implantable brain-computer interfaces (BCIs). However, implantable BCI technology still faces challenges in the biocompatibility and long-term stability of devices after implantation. Due to the cone structure, needle electrodes have advantages in the biocompatibility and stability as nerve recording electrodes. This paper develops the fabrication of Ag needle micro/nano electrodes with a laser-assisted pulling method and modifies the electrode surface by electrochemical oxidation. A significant impedance reduction of the modified Ag/AgCl electrodes compared to the Ag electrodes is demonstrated by the electrochemical impedance spectrum (EIS). Furthermore, the stability of modified Ag/AgCl electrodes is confirmed by cyclic voltammogram (CV) scanning. These findings suggest that these micro/nano electrodes have a great application prospect in neural interfaces.
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Affiliation(s)
- Ye Xi
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication Laboratory, Department of Micro/Nano-electronics, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Bowen Ji
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication Laboratory, Department of Micro/Nano-electronics, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Zhejun Guo
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication Laboratory, Department of Micro/Nano-electronics, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Wen Li
- Department of Electrical and Computer Engineering, College of Engineering, Michigan State University, East Lansing, MI 48823, USA.
| | - Jingquan Liu
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication Laboratory, Department of Micro/Nano-electronics, Shanghai Jiao Tong University, Shanghai 200240, China.
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14
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Tang H, Zhu J, Wang D, Li Y. Dual-signal amplification strategy for miRNA sensing with high sensitivity and selectivity by use of single Au nanowire electrodes. Biosens Bioelectron 2019; 131:88-94. [DOI: 10.1016/j.bios.2019.02.023] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 01/15/2019] [Accepted: 02/01/2019] [Indexed: 12/15/2022]
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15
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Tang H, Hao H, Zhu J, Guan X, Qiu B, Li Y. Single Pt–Pd Bimetallic Nanoparticle Electrode: Controllable Fabrication and Unique Electrocatalytic Performance for the Methanol Oxidation Reaction. Chemistry 2019; 25:4935-4940. [DOI: 10.1002/chem.201900076] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Indexed: 11/12/2022]
Affiliation(s)
- Haoran Tang
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials ScienceAnhui Normal University Wuhu 241000 P.R. China
| | - Huan Hao
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials ScienceAnhui Normal University Wuhu 241000 P.R. China
| | - Jiahui Zhu
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials ScienceAnhui Normal University Wuhu 241000 P.R. China
| | - Xianping Guan
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of EducationJiangsu University Zhenjiang 212013 P.R. China
| | - Baijing Qiu
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of EducationJiangsu University Zhenjiang 212013 P.R. China
| | - Yongxin Li
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials ScienceAnhui Normal University Wuhu 241000 P.R. China
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16
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Yang C, Wang H, Tang H, Zhao D, Li Y. A simple strategy for the fabrication of gold-modified single nanopores and its application for miRNA sensing. Chem Commun (Camb) 2019; 55:10288-10291. [DOI: 10.1039/c9cc04864b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A simple strategy was developed for nanopore modification, and was used for miRNA sensing with good sensitivity and selectivity.
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Affiliation(s)
- Cheng Yang
- Anhui Key Laboratory of Chemo/Biosensing
- College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu
- P. R. China
| | - Hao Wang
- Anhui Key Laboratory of Chemo/Biosensing
- College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu
- P. R. China
| | - Haoran Tang
- Anhui Key Laboratory of Chemo/Biosensing
- College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu
- P. R. China
| | - Dandan Zhao
- Anhui Key Laboratory of Chemo/Biosensing
- College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu
- P. R. China
| | - Yongxin Li
- Anhui Key Laboratory of Chemo/Biosensing
- College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu
- P. R. China
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