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Gwon HJ, Lim D, Ahn HS. Bioanalytical chemistry with scanning electrochemical microscopy. B KOREAN CHEM SOC 2021. [DOI: 10.1002/bkcs.12383] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Hyo Jin Gwon
- Department of Chemistry Institution: Yonsei University Seoul South Korea
| | - Donghoon Lim
- Department of Chemistry Institution: Yonsei University Seoul South Korea
| | - Hyun S. Ahn
- Department of Chemistry Institution: Yonsei University Seoul South Korea
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2
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Wang D, Hua H, Liu Y, Tang H, Li Y. Single Ag Nanowire Electrodes and Single Pt@Ag Nanowire Electrodes: Fabrication, Electrocatalysis, and Surface-Enhanced Raman Scattering Applications. Anal Chem 2019; 91:4291-4295. [DOI: 10.1021/acs.analchem.8b04610] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Dongmei Wang
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, P.R. China
- College of Chemistry and Material Engineering, Chaohu University, Chaohu, Anhui 238000, 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
| | - Yong Liu
- 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
| | - 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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Wang J, Yang J, Ying YL, Long YT. Nanopore-Based Confined Spaces for Single-Molecular Analysis. Chem Asian J 2019; 14:389-397. [PMID: 30548206 DOI: 10.1002/asia.201801648] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 12/09/2018] [Indexed: 11/07/2022]
Abstract
The field of nanopore sensing at the single-molecular level is in a "boom" period. Such nanopores, which are either composed of biological materials or are fabricated from solid-state substrates, offer a unique confined space that is compatible with the single-molecular scale. Under the influence of an electrical field, such single-biomolecular interfaces can read single-molecular information and, if appropriately fine-tuned, each molecule plays its individual ionic rhythm to compose a "molecular symphony". Over the past few decades, many research groups have worked on nanopore-based single-molecular sensors for a range of thrilling chemical and clinical applications. Furthermore, for the past decade, we have also focused on nanopore-based sensors. In this Minireview, we summarize the recent developments in fundamental research and applications in this area, along with data algorithms and advances in hardware, which act as infrastructure for the electrochemical analysis.
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Affiliation(s)
- Jiajun Wang
- Key Laboratory for Advanced Materials, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | - Jie Yang
- Key Laboratory for Advanced Materials, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | - Yi-Lun Ying
- Key Laboratory for Advanced Materials, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | - Yi-Tao Long
- Key Laboratory for Advanced Materials, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, P. R. China
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Hua H, Liu Y, Wang D, Li Y. Size-Dependent Voltammetry at Single Silver Nanoelectrodes. Anal Chem 2018; 90:9677-9681. [DOI: 10.1021/acs.analchem.8b02644] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Hongmei Hua
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, P.R. China
| | - Yong Liu
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, P.R. China
| | - Dongmei Wang
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, P.R. China
| | - Yongxin Li
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, P.R. China
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Fan Y, Han C, Zhang B. Recent advances in the development and application of nanoelectrodes. Analyst 2016; 141:5474-87. [PMID: 27510555 DOI: 10.1039/c6an01285j] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Nanoelectrodes have key advantages compared to electrodes of conventional size and are the tool of choice for numerous applications in both fundamental electrochemistry research and bioelectrochemical analysis. This Minireview summarizes recent advances in the development, characterization, and use of nanoelectrodes in nanoscale electroanalytical chemistry. Methods of nanoelectrode preparation include laser-pulled glass-sealed metal nanoelectrodes, mass-produced nanoelectrodes, carbon nanotube based and carbon-filled nanopipettes, and tunneling nanoelectrodes. Several new topics of their recent application are covered, which include the use of nanoelectrodes for electrochemical imaging at ultrahigh spatial resolution, imaging with nanoelectrodes and nanopipettes, electrochemical analysis of single cells, single enzymes, and single nanoparticles, and the use of nanoelectrodes to understand single nanobubbles.
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Affiliation(s)
- Yunshan Fan
- Department of Chemistry, University of Washington, Seattle, Washington 98115, USA.
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Nanoelectrodes: Applications in electrocatalysis, single-cell analysis and high-resolution electrochemical imaging. Trends Analyt Chem 2016. [DOI: 10.1016/j.trac.2016.01.018] [Citation(s) in RCA: 126] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Barforoush JM, McDonald TD, Desai TA, Widrig D, Bayer C, Brown MK, Cummings LC, Leonard KC. Intelligent Scanning Electrochemical Microscopy Tip and Substrate Control Utilizing Fuzzy Logic. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2015.12.112] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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8
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Affiliation(s)
- Rui Hao
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Bo Zhang
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
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Ciabocco M, Berrettoni M, Zamponi S, Cox JA. Immobilization of nanobeads on a surface to control the size, shape and distribution of pores in electrochemically generated sol-gel films. J Solid State Electrochem 2015; 19:2087-2094. [PMID: 26167128 DOI: 10.1007/s10008-014-2709-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Electrochemically assisted deposition of an ormosil film at a potential where hydrogen ion is generated as the catalyst yields insulating films on electrodes. When the base electrode is modified with 20-nm poly(styrene sulfonate), PSS, beads bound to the surface with 3-aminopropyltriethoxysilane (APTES) and using (CH3)3SiOCH3 as the precursor, the resulting film of organically modified silica (ormosil) has cylindrical channels that reflect both the diameter of the PSS and the distribution of the APTES-PSS on the electrode. At an electrode modified by a 20-min immersion in 0.5 mmol dm-3 APTES followed by a 30-s immersion in PSS, a 20-min electrolysis at 1.5 V in acidified (CH3)3SiOCH3 resulted in an ormosil film with 20-nm pores separated by 100 nm. Cyclic voltammetry of Ru(CN)64- at scan rates above 5 mVs-1 yielded currents controlled primarily by linear diffusion. Below 5 mVs-1, convection rather than the expected factor, radial diffusion, apparently limited the current.
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Affiliation(s)
- Michela Ciabocco
- Dipartimento di Chimica Industriale "Toso Montanari", UOS, Campus di Rimini, Università di Bologna, Rimini, Italy
| | - Mario Berrettoni
- Dipartimento di Chimica Industriale "Toso Montanari", UOS, Campus di Rimini, Università di Bologna, Rimini, Italy
| | - Silvia Zamponi
- Scuola di Scienze e Tecnologie, Università di Camerino, Camerino, Italy
| | - James A Cox
- Department of Chemistry and Biochemistry, Miami University, Oxford, OH USA 45056
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Ni CJ, Chau-Nan Hong F. Electroless nanowelding of silver nanowires at room temperature. RSC Adv 2014. [DOI: 10.1039/c4ra06138a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Zhu X, Qiao Y, Zhang X, Zhang S, Yin X, Gu J, Chen Y, Zhu Z, Li M, Shao Y. Fabrication of metal nanoelectrodes by interfacial reactions. Anal Chem 2014; 86:7001-8. [PMID: 24958198 DOI: 10.1021/ac501119z] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Despite great improvements in the past decades, the controllable fabrication of metal nanoelectrodes still remains very challenging. In this work, a simple and general way to fabricate metal nanoelectrodes (Ag, Au, and Pt) is developed. On the basis of interfacial reactions at nano-liquid/liquid interfaces supported at nanopipettes, the nanoparticles can be formed in situ and have been used to block the orifices of pipettes to make nanoelectrodes. The effect of the driving force for interfacial reaction at the liquid/liquid interface, the ratio of redox species in organic and aqueous phases, and the surface charge of the inner wall of a pipette have been studied. The fabricated nanoelectrodes have been characterized by scanning electron microscopy (SEM) and electrochemical techniques. A silver electrode with about 10 nm in radius has been employed as the scanning electrochemical microscopy (SECM) probe to explore the thickness of a water/nitrobenzene (W/NB) interface, and this value is equal to 0.8 ± 0.1 nm (n = 5). This method of fabrication of nanoelectrodes can be extended to other metal or semiconductor electrodes.
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Affiliation(s)
- Xinyu Zhu
- College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, China
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Battistel D, Pecchielan G, Daniele S. Micropipette Contact Technique as a Tool to Reveal, Characterize, and Modify Nanopore Electrodes. ChemElectroChem 2013. [DOI: 10.1002/celc.201300147] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Nioradze N, Chen R, Kim J, Shen M, Santhosh P, Amemiya S. Origins of nanoscale damage to glass-sealed platinum electrodes with submicrometer and nanometer size. Anal Chem 2013; 85:6198-202. [PMID: 23763642 DOI: 10.1021/ac401316n] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Glass-sealed Pt electrodes with submicrometer and nanometer size have been successfully developed and applied for nanoscale electrochemical measurements such as scanning electrochemical microscopy (SECM). These small electrodes, however, are difficult to work with because they often lose a current response or give a low SECM feedback in current-distance curves. Here we report that these problems can be due to the nanometer-scale damage that is readily and unknowingly made to the small tips in air by electrostatic discharge or in electrolyte solution by electrochemical etching. The damaged Pt electrodes are recessed and contaminated with removed electrode materials to lower their current responses. The recession and contamination of damaged Pt electrodes are demonstrated by scanning electron microscopy and X-ray energy dispersive spectroscopy. The recessed geometry is noticeable also by SECM but is not obvious from a cyclic voltammogram. Characterization of a damaged Pt electrode with recessed geometry only by cyclic voltammetry may underestimate electrode size from a lower limiting current owing to an invalid assumption of inlaid disk geometry. Significantly, electrostatic damage can be avoided by grounding a Pt electrode and nearby objects, most importantly, an operator as a source of electrostatic charge. Electrochemical damage can be avoided by maintaining potentiostatic control of a Pt electrode without internally disconnecting the electrode from a potentiostat between voltammetric measurements. Damage-free Pt electrodes with submicrometer and nanometer sizes are pivotal for reliable and quantitative nanoelectrochemical measurements.
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Affiliation(s)
- Nikoloz Nioradze
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, USA
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