101
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Liu Y, Strutwolf J, Arrigan DWM. Ion-Transfer Voltammetric Behavior of Propranolol at Nanoscale Liquid–Liquid Interface Arrays. Anal Chem 2015; 87:4487-94. [DOI: 10.1021/acs.analchem.5b00461] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Yang Liu
- Nanochemistry
Research Institute, Department of Chemistry, Curtin University, GPO
Box U1987, Perth, Western
Australia 6845, Australia
| | - Jörg Strutwolf
- Institute
of Organic Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Damien W. M. Arrigan
- Nanochemistry
Research Institute, Department of Chemistry, Curtin University, GPO
Box U1987, Perth, Western
Australia 6845, Australia
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102
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Gao K, Jiang XH, Hu DP, Bian SJ, Wang M, Chen Y. Impact of an ionic surfactant on the ion transfer behaviors at meso-liquid/liquid interface arrays. CHINESE CHEM LETT 2015. [DOI: 10.1016/j.cclet.2014.12.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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103
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Molina A, Laborda E, González J, Compton RG. Linear Sweep and Cyclic Voltammetries of Reversible Ion Transfer Processes at Macro- and Microcapillaries under Transient Regime. ELECTROANAL 2015. [DOI: 10.1002/elan.201400398] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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104
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Herzog G. Recent developments in electrochemistry at the interface between two immiscible electrolyte solutions for ion sensing. Analyst 2015; 140:3888-96. [DOI: 10.1039/c5an00601e] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The most recent developments on electrochemical sensing of ions at the liquid–liquid interface are reviewed here.
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Affiliation(s)
- Grégoire Herzog
- Laboratoire de Chimie Physique et Microbiologie pour l'Environnement (LCPME)
- UMR 7564
- CNRS – Université de Lorraine
- Villers-lès-Nancy
- France
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105
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Jiang X, Gao K, Hu D, Wang H, Bian S, Chen Y. Ion-transfer voltammetric determination of folic acid at meso-liquid–liquid interface arrays. Analyst 2015; 140:2823-33. [DOI: 10.1039/c4an02011a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Voltammetric studies on the simple ion transfer (IT) behaviors of an important water-soluble B-vitamin, folic acid (FA), at the liquid–liquid (L–L) interface were firstly performed and applied as a novel detection method for FA under physiological conditions. This work provides a new and attractive strategy for the detection of FA− and other biological anions.
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Affiliation(s)
- Xuheng Jiang
- School of Chemical and Environmental Engineering
- Shanghai Institute of Technology
- Shanghai 201418
- China
| | - Kui Gao
- School of Chemical and Environmental Engineering
- Shanghai Institute of Technology
- Shanghai 201418
- China
| | - Daopan Hu
- School of Chemical and Environmental Engineering
- Shanghai Institute of Technology
- Shanghai 201418
- China
| | - Huanhuan Wang
- School of Chemical and Environmental Engineering
- Shanghai Institute of Technology
- Shanghai 201418
- China
| | - Shujuan Bian
- School of Chemical and Environmental Engineering
- Shanghai Institute of Technology
- Shanghai 201418
- China
| | - Yong Chen
- School of Chemical and Environmental Engineering
- Shanghai Institute of Technology
- Shanghai 201418
- China
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106
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Stockmann TJ, Ding Z. Electrochemical behaviour of ferrocenes in tributylmethylphosphonium methyl sulfate mixtures with water and 1,2-dichloroethane. CAN J CHEM 2015. [DOI: 10.1139/cjc-2014-0006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Electron transfer (ET) reactions in ionic liquid (IL)|organic solvent (1,2-dichloroethane, DCE) and IL|water mixtures were investigated using a Pt disk ultramicroelectrode (UME) along with ferrocene (Fc) and ferrocenemethanol (FcCH2OH) redox probes as electroactive species dissolved in the respective mixtures. The IL utilized was tributylmethylphosphonium methyl sulfate (P4441CH3SO4). The diffusion coefficient of each redox species was determined at each incremental increase of DCE or water to the IL using a chronoamperometric technique that is concentration independent. The IL|DCE mixture exhibited little change in the Fc diffusion coefficient, DFc, up to a DCE mole fraction (χDCE) of 0.5; the observed value, 2.0 × 10−8 cm2 s−1, agrees well with that typically reported for ILs in the literature. After which, the DFc quickly rose to a value commonly found in conventional molecular solvents, 1.3 × 10−5 cm2 s−1 (at χDCE = 0.8). An analogous result was not observed for IL|water mixtures using FcCH2OH, such that [Formula: see text] varied from 0.2 to 1.2 × 10−9 cm2·s−1 at a [Formula: see text] of 0 to 0.8. It was proposed that a large increase in the DFc in the IL|DCE mixture versus [Formula: see text] in the IL|water series was owing to P4441CH3SO4’s more hydrophobic character. Its hydrophobicity was quantified by measuring the formal ion transfer potentials of the IL component ions at a water|DCE immiscible interface.
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Affiliation(s)
- T. Jane Stockmann
- Laboratoire d’Electrochimie Physique et Analytique, Ecole Polytechnique Fédérale de Lausanne (EPFL), Station 6, CH-1015 Lausanne, Switzerland
- Department of Chemistry, The University of Western Ontario, Chemistry Building, 1151 Richmond Street, London, ON N6A 5B7, Canada
| | - Zhifeng Ding
- Department of Chemistry, The University of Western Ontario, Chemistry Building, 1151 Richmond Street, London, ON N6A 5B7, Canada
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107
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Silver BR, Holub K, Mareček V. Ion transfer kinetics at the micro-interface between two immiscible electrolyte solutions investigated by electrochemical impedance spectroscopy and steady-state voltammetry. J Electroanal Chem (Lausanne) 2014. [DOI: 10.1016/j.jelechem.2014.08.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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108
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Hu K, Wang Y, Cai H, Mirkin MV, Gao Y, Friedman G, Gogotsi Y. Open carbon nanopipettes as resistive-pulse sensors, rectification sensors, and electrochemical nanoprobes. Anal Chem 2014; 86:8897-901. [PMID: 25160727 DOI: 10.1021/ac5022908] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Nanometer-sized glass and quartz pipettes have been widely used as a core of chemical sensors, patch clamps, and scanning probe microscope tips. Many of those applications require the control of the surface charge and chemical state of the inner pipette wall. Both objectives can be attained by coating the inner wall of a quartz pipette with a nanometer-thick layer of carbon. In this letter, we demonstrate the possibility of using open carbon nanopipettes (CNP) produced by chemical vapor deposition as resistive-pulse sensors, rectification sensors, and electrochemical nanoprobes. By applying a potential to the carbon layer, one can change the surface charge and electrical double-layer at the pipette wall, which, in turn, affect the ion current rectification and adsorption/desorption processes essential for resistive-pulse sensors. CNPs can also be used as versatile electrochemical probes such as asymmetric bipolar nanoelectrodes and dual electrodes based on simultaneous recording of the ion current through the pipette and the current produced by oxidation/reduction of molecules at the carbon nanoring.
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Affiliation(s)
- Keke Hu
- Key Laboratory of Cluster Science (Ministry of Education of China) and Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry, Beijing Institute of Technology , Beijing 100081, P. R. China
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109
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110
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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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111
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Li B, Qiao Y, Gu J, Zhu X, Yin X, Li Q, Zhu Z, Li M, Jing P, Shao Y. Electrochemical behaviors of protonated diamines at the micro-water/1,2-dichloroethane interface. J Electroanal Chem (Lausanne) 2014. [DOI: 10.1016/j.jelechem.2014.05.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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112
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Studies on the meso-sized selectivity of a novel organic/inorganic hybrid mesoporous silica membrane. J Memb Sci 2014. [DOI: 10.1016/j.memsci.2014.01.035] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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113
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Wang X, Yang Y, Li L, Sun M, Yin H, Qin W. A Polymeric Liquid Membrane Electrode Responsive to 3,3′,5,5′-Tetramethylbenzidine Oxidation for Sensitive Peroxidase/Peroxidase Mimetic-Based Potentiometric Biosensing. Anal Chem 2014; 86:4416-22. [DOI: 10.1021/ac500281r] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Xuewei Wang
- Key
Laboratory of Coastal Environmental Processes and Ecological Remediation,
Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of
Sciences(CAS); Shandong Provincial Key Laboratory of Coastal Environmental
Processes, YICCAS, Yantai, Shandong 264003, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Yangang Yang
- College
of Chemistry and Chemical Engineering, Yantai University, Yantai, Shandong 264003, People’s Republic of China
| | - Long Li
- Key
Laboratory of Coastal Environmental Processes and Ecological Remediation,
Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of
Sciences(CAS); Shandong Provincial Key Laboratory of Coastal Environmental
Processes, YICCAS, Yantai, Shandong 264003, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Mingshuang Sun
- College
of Chemistry and Chemical Engineering, Yantai University, Yantai, Shandong 264003, People’s Republic of China
| | - Haogen Yin
- College
of Chemistry and Chemical Engineering, Yantai University, Yantai, Shandong 264003, People’s Republic of China
| | - Wei Qin
- Key
Laboratory of Coastal Environmental Processes and Ecological Remediation,
Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of
Sciences(CAS); Shandong Provincial Key Laboratory of Coastal Environmental
Processes, YICCAS, Yantai, Shandong 264003, People’s Republic of China
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114
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Electrochemical assessment of water|ionic liquid biphasic systems towards cesium extraction from nuclear waste. Anal Chim Acta 2014; 821:41-7. [DOI: 10.1016/j.aca.2014.03.012] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2014] [Revised: 03/09/2014] [Accepted: 03/11/2014] [Indexed: 11/23/2022]
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115
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Wu Y, Liu K, Su B, Jiang L. Superhydrophobicity-mediated electrochemical reaction along the solid-liquid-gas triphase interface: edge-growth of gold architectures. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:1124-1128. [PMID: 24243745 DOI: 10.1002/adma.201304062] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Revised: 09/24/2013] [Indexed: 06/02/2023]
Abstract
A superhydrophobic pillar-structured electrode leads to uncommon electrochemical behavior. The anti-wetting reaction surface restricts the contact between electrolyte and electrode to the pillar tops, as a result of trapped air pockets in the gaps between pillars. The electrochemical reaction occurs mainly at the solid/liquid/gas triphase interface, instead of the traditional solid/liquid diphase surface, yielding unique edge-growth structures - for example gold microflowers - on the top of each pillar.
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Affiliation(s)
- Yuchen Wu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing, 100190, P. R. China
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116
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Actis P, Maalouf M, Kim HJ, Lohith A, Vilozny B, Seger RA, Pourmand N. Compartmental genomics in living cells revealed by single-cell nanobiopsy. ACS NANO 2014; 8:546-53. [PMID: 24279711 PMCID: PMC3946819 DOI: 10.1021/nn405097u] [Citation(s) in RCA: 108] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
The ability to study the molecular biology of living single cells in heterogeneous cell populations is essential for next generation analysis of cellular circuitry and function. Here, we developed a single-cell nanobiopsy platform based on scanning ion conductance microscopy (SICM) for continuous sampling of intracellular content from individual cells. The nanobiopsy platform uses electrowetting within a nanopipette to extract cellular material from living cells with minimal disruption of the cellular milieu. We demonstrate the subcellular resolution of the nanobiopsy platform by isolating small subpopulations of mitochondria from single living cells, and quantify mutant mitochondrial genomes in those single cells with high throughput sequencing technology. These findings may provide the foundation for dynamic subcellular genomic analysis.
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Affiliation(s)
| | | | | | | | | | | | - Nader Pourmand
- Corresponding Author: Department of Biomolecular Engineering, University of California Santa Cruz, 1156 High Street, Santa Cruz, CA 95064, USA , +1 (831) 502-7315
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117
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Hu D, Wang H, Gao K, Jiang X, Wang M, Long Y, Chen Y. Anion transfer across “anion channels” at the liquid/liquid interface modified by anion-exchange membrane. RSC Adv 2014. [DOI: 10.1039/c4ra09985k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
A novel strategy is proposed to mimic anion channels and study anion transfer reactions at the water/1,2-dichloroethane (W/DCE) interface modified by a homogeneous anion-exchange membrane (AEM).
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Affiliation(s)
- Daopan Hu
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology
- Shanghai, China
| | - Huanhuan Wang
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology
- Shanghai, China
| | - Kui Gao
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology
- Shanghai, China
| | - Xuheng Jiang
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology
- Shanghai, China
| | - Meng Wang
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology
- Shanghai, China
| | - Yafeng Long
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology
- Shanghai, China
| | - Yong Chen
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology
- Shanghai, China
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118
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Chen S, Liu Y, Chen J. Heterogeneous electron transfer at nanoscopic electrodes: importance of electronic structures and electric double layers. Chem Soc Rev 2014; 43:5372-86. [DOI: 10.1039/c4cs00087k] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Recent insights into the nanoscopic electrode size and structure effects on heterogeneous ET kinetics are presented.
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Affiliation(s)
- Shengli Chen
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- Hubei Key Laboratory of Electrochemical Power Sources
- Department of Chemistry
- Wuhan University
- Wuhan 430072, China
| | - Yuwen Liu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- Hubei Key Laboratory of Electrochemical Power Sources
- Department of Chemistry
- Wuhan University
- Wuhan 430072, China
| | - Junxiang Chen
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- Hubei Key Laboratory of Electrochemical Power Sources
- Department of Chemistry
- Wuhan University
- Wuhan 430072, China
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119
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Zhang D, Yan K, Wu F, Zhang C. A High Power Density Dual-electrolyte Lithium-Silver Battery with Celgard® 2325 Separator. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2013.11.051] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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120
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Abstract
Here we review the recent applications of ion transfer (IT) at the interface between two immiscible electrolyte solutions (ITIES) for electrochemical sensing and imaging. In particular, we focus on the development and recent applications of the nanopipet-supported ITIES and double-polymer-modified electrode, which enable the dynamic electrochemical measurements of IT at nanoscopic and macroscopic ITIES, respectively. High-quality IT voltammograms are obtainable using either technique to quantitatively assess the kinetics and dynamic mechanism of IT at the ITIES. Nanopipet-supported ITIES serves as an amperometric tip for scanning electrochemical microscopy to allow for unprecedentedly high-resolution electrochemical imaging. Voltammetric ion sensing at double-polymer-modified electrodes offers high sensitivity and unique multiple-ion selectivity. The promising future applications of these dynamic approaches for bioanalysis and electrochemical imaging are also discussed.
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121
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Arrigan D, Herzog G, Scanlon M, Strutwolf J. Bioanalytical Applications of Electrochemistry at Liquid-Liquid Microinterfaces. ELECTROANALYTICAL CHEMISTRY: A SERIES OF ADVANCES 2013. [DOI: 10.1201/b15576-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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122
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Sairi M, Strutwolf J, Mitchell RA, Silvester DS, Arrigan DW. Chronoamperometric response at nanoscale liquid–liquid interface arrays. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2012.11.062] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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123
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Alvarez de Eulate E, O'Sullivan S, Fletcher S, Newsholme P, Arrigan DWM. Ion-Transfer Electrochemistry of Rat Amylin at the Water-Organogel Microinterface Array and Its Selective Detection in a Protein Mixture. Chem Asian J 2013; 8:2096-101. [DOI: 10.1002/asia.201300215] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Indexed: 11/11/2022]
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124
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Stripping voltammetry at micro-interface arrays: A review. Anal Chim Acta 2013; 769:10-21. [DOI: 10.1016/j.aca.2012.12.031] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2012] [Revised: 12/04/2012] [Accepted: 12/18/2012] [Indexed: 11/18/2022]
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125
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Facilitated Ion Transfers at the Micro-Water/1,2-Dichloroethane Interface by Crown Ether Derivatives. ELECTROANAL 2013. [DOI: 10.1002/elan.201200549] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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126
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O’Sullivan S, Arrigan DWM. Impact of a Surfactant on the Electroactivity of Proteins at an Aqueous–Organogel Microinterface Array. Anal Chem 2013; 85:1389-94. [DOI: 10.1021/ac302222u] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Shane O’Sullivan
- Nanochemistry Research
Institute, Department
of Chemistry, Curtin University, G.P.O. Box U1987, Perth, Western Australia 6845, Australia
| | - Damien W. M. Arrigan
- Nanochemistry Research
Institute, Department
of Chemistry, Curtin University, G.P.O. Box U1987, Perth, Western Australia 6845, Australia
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127
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O'Sullivan S, Alvarez de Eulate E, Yuen YH, Helmerhorst E, Arrigan DWM. Stripping voltammetric detection of insulin at liquid–liquid microinterfaces in the presence of bovine albumin. Analyst 2013; 138:6192-6. [DOI: 10.1039/c3an01123b] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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128
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129
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130
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Xie Y, Ahmed D, Lapsley MI, Lin SCS, Nawaz AA, Wang L, Huang TJ. Single-shot characterization of enzymatic reaction constants Km and kcat by an acoustic-driven, bubble-based fast micromixer. Anal Chem 2012; 84:7495-501. [PMID: 22880882 PMCID: PMC3991781 DOI: 10.1021/ac301590y] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In this work we present an acoustofluidic approach for rapid, single-shot characterization of enzymatic reaction constants K(m) and k(cat). The acoustofluidic design involves a bubble anchored in a horseshoe structure which can be stimulated by a piezoelectric transducer to generate vortices in the fluid. The enzyme and substrate can thus be mixed rapidly, within 100 ms, by the vortices to yield the product. Enzymatic reaction constants K(m) and k(cat) can then be obtained from the reaction rate curves for different concentrations of substrate while holding the enzyme concentration constant. We studied the enzymatic reaction for β-galactosidase and its substrate (resorufin-β-D-galactopyranoside) and found K(m) and k(cat) to be 333 ± 130 μM and 64 ± 8 s(-1), respectively, which are in agreement with published data. Our approach is valuable for studying the kinetics of high-speed enzymatic reactions and other chemical reactions.
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Affiliation(s)
- Yuliang Xie
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
- Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA 16802, USA
| | - Daniel Ahmed
- Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA 16802, USA
| | - Michael Ian Lapsley
- Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA 16802, USA
| | - Sz-Chin Steven Lin
- Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA 16802, USA
| | - Ahmad Ahsan Nawaz
- Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA 16802, USA
| | - Lin Wang
- Ascent Bio-Nano Technologies Inc, State College, PA 16801, USA
| | - Tony Jun Huang
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
- Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA 16802, USA
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131
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132
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Investigation of the electrochemical processes related to IT coupling with ET by hydrophilic droplet electrodes. J Electroanal Chem (Lausanne) 2012. [DOI: 10.1016/j.jelechem.2012.05.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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133
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Liu S, Dong Y, Zhao W, Xie X, Ji T, Yin X, Liu Y, Liang Z, Momotenko D, Liang D, Girault HH, Shao Y. Studies of Ionic Current Rectification Using Polyethyleneimines Coated Glass Nanopipettes. Anal Chem 2012; 84:5565-73. [DOI: 10.1021/ac3004852] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shujuan Liu
- Beijing National Laboratory
for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Yitong Dong
- Beijing National Laboratory
for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Wenbo Zhao
- Beijing National Laboratory
for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Xiang Xie
- Beijing National Laboratory
for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Tianrong Ji
- Beijing National Laboratory
for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Xiaohong Yin
- Beijing National Laboratory
for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Yun Liu
- Beijing National Laboratory
for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Zhongwei Liang
- Beijing Research Institute of Chemical Industry, No. 14 Beisanhuan Donglu,
Chaoyang District, Beijing 100013, China
| | - Dmitry Momotenko
- Laboratoire d’Electrochimie
Physique et Analytique, Ecole Polytechnique Fédérale de Lausanne, Station 6, CH-1015 Lausanne, Switzerland
| | - Dehai Liang
- Beijing National Laboratory
for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Hubert H. Girault
- Laboratoire d’Electrochimie
Physique et Analytique, Ecole Polytechnique Fédérale de Lausanne, Station 6, CH-1015 Lausanne, Switzerland
| | - Yuanhua Shao
- Beijing National Laboratory
for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
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134
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Herzog G, Flynn S, Johnson C, Arrigan DW. Electroanalytical Behavior of Poly-l-Lysine Dendrigrafts at the Interface between Two Immiscible Electrolyte Solutions. Anal Chem 2012; 84:5693-9. [DOI: 10.1021/ac300856w] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Grégoire Herzog
- Tyndall National Institute, University College Cork, Lee Maltings, Cork, Ireland
| | - Shane Flynn
- Tyndall National Institute, University College Cork, Lee Maltings, Cork, Ireland
| | - Colm Johnson
- Tyndall National Institute, University College Cork, Lee Maltings, Cork, Ireland
| | - Damien W.M. Arrigan
- Nanochemistry Research Institute,
Department of Chemistry, Curtin University, GPO Box U1987, Perth, WA 6845, Australia
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135
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Alam MT, Sohail M, De Marco R. Electrochemistry at the interface between an aqueous droplet and 1,2-dichloroethane. Electrochem commun 2012. [DOI: 10.1016/j.elecom.2012.02.044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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136
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Lopes P, Kataky R. Chiral interactions of the drug propranolol and α1-acid-glycoprotein at a micro liquid-liquid interface. Anal Chem 2012; 84:2299-304. [PMID: 22250754 DOI: 10.1021/ac2029425] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The investigation of chiral interactions of drugs with plasma proteins is of fundamental importance for drug efficacy and toxicity studies. In this paper, we demonstrate a simple liquid-liquid interface procedure for investigating chiral interactions. Chiral discrimination of the enantiomers of a basic drug, propranolol, was achieved at a micro liquid-liquid interface, using α(1)-acid-glycoprotein (AGP) as a chiral acute phase plasma protein. When the protein is added to an aqueous phase containing the enantiomers of propranalol hydrochloride, the binding of (S)- and (R)-propranolol hydrochloride to the protein results in a decrease in the cyclic voltammetry (CV) and differential pulse voltammetry (DPV) current responses corresponding to the decrease in transfer of propranolol at an aqueous-1,2-dichloroethane interface. This decrease is a consequence of the complexation of the drug and the protein. The complex drug-protein does not transfer across the interface nor changes the transfer potential of the uncomplexed form of propranolol enantiomers. The bound concentration of propranolol enantiomers in the presence of AGP was found to be greater for (S)-propranolol than (R)-propranolol for solutions containing constant concentrations of AGP (50 μM). Scatchard analysis yielded association constants of 2.7 and 1.3 × 10(5) M(-1) for (S)- and (R)-propranolol, respectively.
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Affiliation(s)
- Paula Lopes
- Durham University, Department of Chemistry, South Road, Durham, DH1 3LE, UK
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137
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Molina Á, Serna C, Ortuño JA, Torralba E. Studies of ion transfer across liquid membranes by electrochemical techniques. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2pc90005j] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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138
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Wu B, Chen X, Zhang C, Mu D, Wu F. Lithium–air and lithium–copper batteries based on a polymer stabilized interface between two immiscible electrolytic solutions (ITIES). NEW J CHEM 2012. [DOI: 10.1039/c2nj40517b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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139
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LIU WM, LI L, REN L, WANG JC, TU Q, WANG XQ, WANG JY. Diversification of Microfluidic Chip for Applications in Cell-Based Bioanalysis. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2012. [DOI: 10.1016/s1872-2040(11)60519-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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140
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Ishimatsu R, Izadyar A, Kabagambe B, Kim Y, Kim J, Amemiya S. Electrochemical mechanism of ion-ionophore recognition at plasticized polymer membrane/water interfaces. J Am Chem Soc 2011; 133:16300-8. [PMID: 21882873 DOI: 10.1021/ja207297q] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Here, we report on the first electrochemical study that reveals the kinetics and molecular level mechanism of heterogeneous ion-ionophore recognition at plasticized polymer membrane/water interfaces. The new kinetic data provide greater understanding of this important ion-transfer (IT) process, which determines various dynamic characteristics of the current technologies that enable highly selective ion sensing and separation. The theoretical assessment of the reliable voltammetric data confirms that the dynamics of the ionophore-facilitated IT follows the one-step electrochemical (E) mechanism controlled by ion-ionophore complexation at the very interface in contrast to the thermodynamically equivalent two-step electrochemical-chemical (EC) mechanism based on the simple transfer of an aqueous ion followed by its complexation in the bulk membrane. Specifically, cyclic voltammograms of Ag(+), K(+), Ca(2+), Ba(2+), and Pb(2+) transfers facilitated by highly selective ionophores are measured and analyzed numerically using the E mechanism to obtain standard IT rate constants in the range of 10(-2) to 10(-3) cm/s at both plasticized poly(vinyl chloride) membrane/water and 1,2-dichloroethane/water interfaces. We demonstrate that these strongly facilitated IT processes are too fast to be ascribed to the EC mechanism. Moreover, the little effect of the viscosity of nonaqueous media on the IT kinetics excludes the EC mechanism, where the kinetics of simple IT is viscosity-dependent. Finally, we employ molecular level models for the E mechanism to propose three-dimensional ion-ionophore complexation at the two-dimensional interface as the unique kinetic requirement for the thermodynamically facilitated IT.
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Affiliation(s)
- Ryoichi Ishimatsu
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, USA
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141
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Gao Z, Li B, Zhao W, Chen Y, Hu M, Liang Z, Zhou S, Shao Y. Simulation and experimental verification of the dependence of collection efficiency on the shape of a dual micropipette. Sci China Chem 2011. [DOI: 10.1007/s11426-011-4301-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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142
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Rimboud M, Hart RD, Becker T, Arrigan DWM. Electrochemical behaviour and voltammetric sensitivity at arrays of nanoscale interfaces between immiscible liquids. Analyst 2011; 136:4674-81. [DOI: 10.1039/c1an15509a] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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143
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Ji T, Liang Z, Zhu X, Wang L, Liu S, Shao Y. Probing the structure of a water/nitrobenzene interface by scanning ion conductance microscopy. Chem Sci 2011. [DOI: 10.1039/c1sc00133g] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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