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Suárez-Herrera MF, Scanlon MD. Quantitative Analysis of Redox-Inactive Ions by AC Voltammetry at a Polarized Interface between Two Immiscible Electrolyte Solutions. Anal Chem 2020; 92:10521-10530. [PMID: 32608226 DOI: 10.1021/acs.analchem.0c01340] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The interface between two immiscible electrolyte solutions (ITIES) is ideally suited to detect redox-inactive ions by their ion transfer. Such electroanalysis, based on the Nernst-Donnan equation, has been predominantly performed using amperometry, cyclic voltammetry, or differential pulse voltammetry. Here, we introduce a new electroanalytical method based on alternating-current (AC) voltammetry with inherent advantages over traditional approaches such as avoidance of positive feedback iR compensation, a major issue for liquid|liquid electrochemical cells containing resistive organic media and interfacial areas in the cm2 and mm2 range. A theoretical background outlining the generation of the analytical signal is provided and based on extracting the component that depends on the Warburg impedance from the total impedance. The quantitative detection of a series of model redox-inactive tetraalkylammonium cations is demonstrated, with evidence provided of the transient adsorption of these cations at the interface during the course of ion transfer. Since ion transfer is diffusion-limited, by changing the voltage excitation frequency during AC voltammetry, the intensity of the Faradaic response can be enhanced at low frequencies (1 Hz) or made to disappear completely at higher frequencies (99 Hz). The latter produces an AC voltammogram equivalent to a "blank" measurement in the absence of analyte and is ideal for background subtraction. Therefore, major opportunities exist for the sensitive detection of ionic analyte when a "blank" measurement in the absence of analyte is impossible. This approach is particularly useful to deconvolute signals related to reversible electrochemical reactions from those due to irreversible processes, which do not give AC signals.
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Affiliation(s)
- Marco F Suárez-Herrera
- Departamento De Química, Facultad De Ciencias, Universidad Nacional De Colombia, Cra 30 # 45-03, Edificio 451, Bogotá, Colombia
| | - Micheál D Scanlon
- The Bernal Institute and Department of Chemical Sciences, School of Natural Sciences, University of Limerick (UL), Limerick V94 T9PX, Ireland
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Akter R, Arrigan DWM. Detection of Prostate Specific Membrane Antigen at Picomolar Levels Using Biocatalysis Coupled to Assisted Ion Transfer Voltammetry at a Liquid-Organogel Microinterface Array. Anal Chem 2016; 88:11302-11305. [DOI: 10.1021/acs.analchem.6b03518] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Rashida Akter
- 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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Arrigan DWM, Alvarez de Eulate E, Liu Y. Electroanalytical Opportunities Derived from Ion Transfer at Interfaces between Immiscible Electrolyte Solutions. Aust J Chem 2016. [DOI: 10.1071/ch15796] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This review presents an introduction to electrochemistry at interfaces between immiscible electrolyte solutions and surveys recent studies of this form of electrochemistry in electroanalytical strategies. Simple ion and facilitated ion transfers across interfaces varying from millimetre scale to nanometre scales are considered. Target detection strategies for a range of ions, inorganic, organic, and biological, including macromolecules, are discussed.
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4
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Lee HJ, Arrigan DWM, Karim MN, Kim H. Amperometric Ion Sensing Approaches at Liquid/Liquid Interfaces for Inorganic, Organic and Biological Ions. ELECTROCHEMICAL STRATEGIES IN DETECTION SCIENCE 2015. [DOI: 10.1039/9781782622529-00296] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Electrochemistry at the interface between two immiscible electrolyte solutions (ITIES) has become an invaluable tool for the selective and sensitive detection of cationic and anionic species, including charged drug molecules and proteins. In addition, neutral molecules can also be detected at the ITIES via enzymatic reactions. This chapter highlights recent developments towards creating a wide spectrum of sensing platforms involving ion transfer across the ITIES. As well as outlining the basic principles needed for performing these sensing applications, the development of ITIES-based detection strategies for inorganic, organic, and biological ions is discussed.
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Affiliation(s)
- Hye Jin Lee
- Department of Chemistry and Green-Nano Materials Research Center, Kyungpook National University 80 Daehakro, Buk-gu Daegu-city 702-701 Republic of Korea
| | - Damien W. M. Arrigan
- Nanochemistry Research Institute, Department of Chemistry, Curtin University GPO Box U1987 Perth, Western Australia 6845 Australia
| | - Md. Nurul Karim
- Department of Chemistry and Green-Nano Materials Research Center, Kyungpook National University 80 Daehakro, Buk-gu Daegu-city 702-701 Republic of Korea
| | - Hyerim Kim
- Department of Chemistry and Green-Nano Materials Research Center, Kyungpook National University 80 Daehakro, Buk-gu Daegu-city 702-701 Republic of Korea
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5
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Ribeiro JA, Pereira CM, Silva F. Electrochemistry of the Interaction between Bioactive Drugs Daunorubicin and Dopamine and DNA at a Water/Oil Interface. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.08.074] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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6
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Okesola BO, Vieira VMP, Cornwell DJ, Whitelaw NK, Smith DK. 1,3:2,4-Dibenzylidene-D-sorbitol (DBS) and its derivatives--efficient, versatile and industrially-relevant low-molecular-weight gelators with over 100 years of history and a bright future. SOFT MATTER 2015; 11:4768-87. [PMID: 26016799 DOI: 10.1039/c5sm00845j] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Dibenzylidene-D-sorbitol (DBS) has been a well-known low-molecular-weight gelator of organic solvents for over 100 years. As such, it constitutes a very early example of a supramolecular gel--a research field which has recently developed into one of intense interest. The ability of DBS to self-assemble into sample-spanning networks in numerous solvents is predicated upon its 'butterfly-like' structure, whereby the benzylidene groups constitute the 'wings' and the sorbitol backbone the 'body'--the two parts representing the molecular recognition motifs underpinning its gelation mechanism, with the nature of solvent playing a key role in controlling the precise assembly mode. This gelator has found widespread applications in areas as diverse as personal care products and polymer nucleation/clarification, and has considerable potential in applications such as dental composites, energy technology and liquid crystalline materials. Some derivatives of DBS have also been reported which offer the potential to expand the scope and range of applications of this family of gelators and endow the nansocale network with additional functionality. This review aims to explain current trends in DBS research, and provide insight into how by combining a long history of application, with modern methods of derivatisation and analysis, the future for this family of gelators is bright, with an increasing number of high-tech applications, from environmental remediation to tissue engineering, being within reach.
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Affiliation(s)
- Babatunde O Okesola
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
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7
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Kim HR, Pereira CM, Han HY, Lee HJ. Voltammetric Studies of Topotecan Transfer Across Liquid/Liquid Interfaces and Sensing Applications. Anal Chem 2015; 87:5356-62. [DOI: 10.1021/acs.analchem.5b00653] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hye Rim Kim
- Department
of Chemistry and Green-Nano Materials Research Center, Kyungpook National University, 80 Daehakro, Buk-gu, Daegu-city, 702-701, Republic of Korea
| | - Carlos M. Pereira
- Centro
de Investigação em Química−UP, L4, Departamento
de Química e Bioquímica da Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal
| | - Hye Youn Han
- Department
of Chemistry and Green-Nano Materials Research Center, Kyungpook National University, 80 Daehakro, Buk-gu, Daegu-city, 702-701, Republic of Korea
| | - Hye Jin Lee
- Department
of Chemistry and Green-Nano Materials Research Center, Kyungpook National University, 80 Daehakro, Buk-gu, Daegu-city, 702-701, Republic of Korea
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8
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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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9
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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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10
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Lai WC. A method for preparing self-assembled gels from opaque solutions with high concentrations of AOT. Colloids Surf A Physicochem Eng Asp 2013. [DOI: 10.1016/j.colsurfa.2013.05.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Abstract
The main aspects related to the charge transfer reactions occurring at the interface between two immiscible electrolyte solutions (ITIES) are described. The particular topics to be discussed involve simple ion transfer. Focus is given on theoretical approaches, numerical simulations, and experimental methodologies. Concerning the theoretical procedures, different computational simulations related to simple ion transfer are reviewed. The main conclusions drawn from the most accepted models are described and analyzed in regard to their relevance for explaining different aspects of ion transfer. We describe numerical simulations implementing different approaches for solving the differential equations associated with the mass transport and charge transfer. These numerical simulations are correlated with selected experimental results; their usefulness in designing new experiments is summarized. Finally, many practical applications can be envisaged regarding the determination of physicochemical properties, electroanalysis, drug lipophilicity, and phase-transfer catalysis.
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Hossain MM, Kim CS, Cha HJ, Lee HJ. Amperometric Detection of Parathion and Methyl Parathion with a Microhole-ITIES. ELECTROANAL 2011. [DOI: 10.1002/elan.201100190] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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13
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Hossain MM, Faisal SN, Kim CS, Cha HJ, Nam SC, Lee HJ. Amperometric proton selective strip-sensors with a microelliptic liquid/gel interface for organophosphate neurotoxins. Electrochem commun 2011. [DOI: 10.1016/j.elecom.2011.03.024] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Scanlon MD, Arrigan DWM. Enhanced Electroanalytical Sensitivity via Interface Miniaturisation: Ion Transfer Voltammetry at an Array of Nanometre Liquid-Liquid Interfaces. ELECTROANAL 2011. [DOI: 10.1002/elan.201000667] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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15
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Lin Y, Zhu N, Yu P, Su L, Mao L. Physiologically relevant online electrochemical method for continuous and simultaneous monitoring of striatum glucose and lactate following global cerebral ischemia/reperfusion. Anal Chem 2010; 81:2067-74. [PMID: 19281258 DOI: 10.1021/ac801946s] [Citation(s) in RCA: 101] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This study demonstrates a new electroanalytical method with a high physiological relevance for simultaneous online monitoring of glucose and lactate in the striatum of the rat brain following global cerebral ischemia/reperfusion. The online analytical method is based on the efficient integration of in vivo microdialysis sampling with an online selective electrochemical detection with the electrochemical biosensors with dehydrogenases, i.e., glucose and lactate dehydrogenases, as recognition elements. The dehydrogenase-based electrochemical biosensors are developed onto the dual split-disk plastic carbon film (SPCF) electrodes with methylene green (MG) adsorbed onto single-walled carbon nanotubes (SWNTs) as the electrocatalyst for the oxidation of dihydronicotiamide adenine dinucleotide (NADH) at a low potential of 0.0 V (vs Ag/AgCl). Artificial cerebrospinal fluid (aCSF) containing NAD(+) is externally perfused from a second pump and online mixed with the brain microdialysates to minimize the variation of pH that occurred following the cerebral ischemia/reperfusion and to supply NAD(+) cofactor and O(2) for the enzymatic reactions of dehydrogenases and ascorbate oxidase, respectively. As a result, the developed online electroanalytical method exhibits a high selectivity against the electrochemically active species endogenously existing in the cerebral systems and a high tolerance against the variation of pH and O(2) following cerebral ischemia/reperfusion. This property, along with the good linearity and a high stability toward glucose and lactate as well as little cross-talk between two biosensors, substantially makes this method possible for the continuous, simultaneous, and online monitoring of glucose and lactate in the rat brain following global cerebral ischemia/reperfusion. This study establishes a new and effective platform for the investigation of the energy metabolism in physiological and pathological processes.
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Affiliation(s)
- Yuqing Lin
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, The Chinese Academy of Sciences, Beijing 100190, China
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16
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Faisal SN, Pereira CM, Rho S, Lee HJ. Amperometric proton selective sensors utilizing ion transfer reactions across a microhole liquid/gel interface. Phys Chem Chem Phys 2010; 12:15184-9. [DOI: 10.1039/c0cp00750a] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Lai WC, Tseng SC. Novel polymeric nanocomposites and porous materials prepared using organogels. NANOTECHNOLOGY 2009; 20:475606. [PMID: 19875871 DOI: 10.1088/0957-4484/20/47/475606] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We propose a new method for preparing polymeric nanocomposites and porous materials using self-assembled templates formed by 1,3:2,4-dibenzylidene sorbitol (DBS) organogels. DBS is capable of self-assembling into a 3D nanofibrillar network at relatively low concentrations in some organic solvents to produce organogels. In this study, we induced the formation of such physical cross-linked networks in styrene. Subsequently, we polymerized the styrene in the presence of chemical cross-linkers, divinyl benzene (DVB), with different amounts of DBS using thermal-initiated polymerization. The resulting materials were transparent, homogeneous polystyrene (PS) nanocomposites with both physical and chemical cross-links. The porous polymeric materials were obtained by solvent extraction of the DBS nanofibrils from the PS. Brunauer-Emmett-Teller (BET) measurements show that the amounts of DBS and DVB influenced the specific surface area after the removal of the DBS fibrils.
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Affiliation(s)
- Wei-Chi Lai
- Department of Chemical and Materials Engineering, Tamkang University, 151 Ying-chuan Road, Tamsui, Taipei 25137, Taiwan.
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18
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Arrigan DWM. Bioanalytical Detection Based on Electrochemistry at Interfaces between Immiscible Liquids. ANAL LETT 2008. [DOI: 10.1080/00032710802518197] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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19
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Li L, Sheng Q, Zheng J, Zhang H. Facile and controllable preparation of glucose biosensor based on Prussian blue nanoparticles hybrid composites. Bioelectrochemistry 2008; 74:170-5. [DOI: 10.1016/j.bioelechem.2008.07.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2007] [Revised: 06/13/2008] [Accepted: 07/24/2008] [Indexed: 11/30/2022]
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20
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Yuan X, Iijima M, Oishi M, Nagasaki Y. Structure and activity assay of nanozymes prepared by the coimmobilization of practically useful enzymes and hydrophilic block copolymers on gold nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:6903-6909. [PMID: 18510375 DOI: 10.1021/la7039288] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Enzyme/polymer/gold nanoparticle hybrids, called "nanozymes", were prepared and structurally analyzed by dynamic light scattering (DLS), ultraviolet-visible spectroscopy, and zeta-potential and transmission electron microscopy (TEM) measurements, which showed that the nanozyme particles were mainly composed of a single gold nanoparticle, on whose surface the enzyme and polymer were coimmobilized. This kind of structure resulted in the high dispersion stability of the nanozyme under various conditions, accompanied by improved thermal stability of the enzyme.
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Affiliation(s)
- Xiaofei Yuan
- Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Ten-noudai, Tsukuba, Ibaraki 305-8753, Japan
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21
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Zazpe R, Hibert C, O'Brien J, Lanyon YH, Arrigan DWM. Ion-transfer voltammetry at silicon membrane-based arrays of micro-liquid-liquid interfaces. LAB ON A CHIP 2007; 7:1732-1737. [PMID: 18030394 DOI: 10.1039/b712601h] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Microporous silicon membranes, fabricated by lithographic patterning and wet and dry silicon etching processes, were used to create arrays of micro-scale interfaces between two immiscible electrolyte solutions (muITIES) for ion-transfer voltammetry. These membranes served the dual functions of interface stabilization and enhancement of the rate of mass-transport to the interface. The pore radii were 6.5 microm, 12.8 microm and 26.6 microm; the pore-pore separations were ca. 20- to 40-times the pore radii and the membrane thickness was 100 microm. Deep reactive ion etching (DRIE) was used for pore drilling through the silicon, which had been previously selectively thinned by potassium hydroxide etching. DRIE produces hydrophobic fluorocarbon-coated internal pore walls. The small pore sizes and large pore-pore separations used resulted in steady-state voltammograms for the transfer of tetramethylammonium cation (TMA(+)) from the aqueous to the organic phase, whereas the reverse voltammetric sweeps were peak-shaped. These asymmetric voltammograms are consistent with the location of the ITIES at the aqueous side of the silicon membrane such that the organic phase fills the micropores. Comparison of the experimental currents to calculated currents for an inlaid disc micro-interface revealed that the interfaces were slightly recessed, up to 10 microm (or 10% of the pore length) in one case. Facilitated ion transfer, with an organic-phase ionophore, confirmed the location of the organic phase within the pores. These microporous silicon membranes offer opportunities for various analytical operations, including enhancing the rate of mass transport to ITIES-based sensing devices and stabilization of the ITIES for hydrodynamic applications.
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Affiliation(s)
- Raul Zazpe
- Tyndall National Institute, Lee Maltings, University College, Cork, Ireland
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22
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Nanoelectrode ensembles based on conductive polyaniline/poly(acrylic acid) using porous sol–gel films as template. Electrochem commun 2007. [DOI: 10.1016/j.elecom.2006.11.017] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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23
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Zhang T, Anslyn EV. Using an Indicator Displacement Assay to Monitor Glucose Oxidase Activity in Blood Serum. Org Lett 2007; 9:1627-9. [PMID: 17391039 DOI: 10.1021/ol070280o] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[diagram: see text] Using a boronic acid receptor that was previously found to have high affinity for gluconic acid, we created a colorimetric indicator displacement assay (IDA) that can report the concentration of the product of glucose oxidase (GOx) catalyzed glucose oxidation. The color change obtained directly reflects the concentration of glucose. Our sensing ensemble was then successfully applied to determine the glucose concentration in human serum, which offers a facile, colorimetric, sensitive, and accurate glucose test.
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Affiliation(s)
- Tianzhi Zhang
- Department of Chemistry and Biochemistry, 1 University Station A5300, The University of Texas, Austin, Texas 78712, USA
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Abstract
A large fraction of the field of supramolecular chemistry has focused in previous decades upon the study and use of synthetic receptors as a means of mimicking natural receptors. Recently, the demand for synthetic receptors is rapidly increasing within the analytical sciences. These classes of receptors are finding uses in simple indicator chemistry, cellular imaging, and enantiomeric excess analysis, while also being involved in various truly practical assays of bodily fluids. Moreover, one of the most promising areas for the use of synthetic receptors is in the arena of differential sensing. Although many synthetic receptors have been shown to yield exquisite selectivities, in general, this class of receptor suffers from cross-reactivities. Yet, cross-reactivity is an attribute that is crucial to the success of differential sensing schemes. Therefore, both selective and nonselective synthetic receptors are finding uses in analytical applications. Hence, a field of chemistry that herein is entitled "Supramolecular Analytical Chemistry" is emerging, and is predicted to undergo increasingly rapid growth in the near future.
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Affiliation(s)
- Eric V Anslyn
- Department of Chemistry and Biochemistry, The University of Texas, Austin, Texas 78712, USA
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Morales MD, Serra B, Guzmán-Vázquez de Prada A, Reviejo AJ, Pingarrón JM. An electrochemical method for simultaneous detection and identification of Escherichia coli, Staphylococcus aureus and Salmonella choleraesuis using a glucose oxidase-peroxidase composite biosensor. Analyst 2007; 132:572-8. [PMID: 17525815 DOI: 10.1039/b618159g] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Quantification of bacterial pollution by amperometric detection at 0.0 V of glucose consumption at a graphite-Teflon-glucose oxidase-peroxidase-ferrocene composite biosensor under flow injection conditions is reported. Using Escherichia coli as the model bacterium, the composition of the growing medium was optimized. A constant glucose concentration of 4.0 x 10(-4) M was added to the culture medium. The relative response to glucose, expressed as the ratio between the amperometric signal and the signal at incubation time t = 0 multiplied by 100, as a function of E. coli concentration, showed a typical behaviour. Limits of detection of 6.5 x 10(2) or 6.5 cfu mL(-1) were achieved after 3 or 7 h of incubation, respectively, with no pre-concentration step. The detection of bacteria did not affect the lifetime of the biosensor. The feasibility of the detection of Staphylococcus aureus and Salmonella choleraesuis throughout the glucose consumption measurement at the composite biosensor is also demonstrated. The capability of bacterial identification by evaluation of bacterial growth in the culture medium containing the antibiotics polymyxin B, vancomycin, erythromycin, bacitracin, chloramphenicol, tetracycline and ciprofloxacin, was investigated. Each micro-organism tested exhibited a different antibiotic susceptibility profile, thus suggesting the possibility of bacteria differentiation. A rapid methodology for screening of bacteria is proposed.
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Affiliation(s)
- María Dolores Morales
- Department of Analytical Chemistry, Faculty of Chemistry, Complutense University of Madrid, 28030 Madrid, Spain
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26
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Affiliation(s)
- Eric Bakker
- Department of Chemistry, 560 Oval Drive, Purdue University, West Lafayette, Indiana 47907, USA
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27
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Jing P, He S, Liang Z, Shao Y. Charge-transfer reactions at liquid/liquid interfaces and their applications in bioassays. Anal Bioanal Chem 2006; 385:428-32. [PMID: 16598457 DOI: 10.1007/s00216-006-0399-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2006] [Revised: 02/22/2006] [Accepted: 02/27/2006] [Indexed: 10/24/2022]
Affiliation(s)
- Ping Jing
- Institute of Analytical Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P.R. China
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28
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Gulaboski R, Pereira CM, Cordeiro MNDS, Bogeski I, Silva F. Enzymatic formation of ions and their detection at a three-phase electrode. J Solid State Electrochem 2005. [DOI: 10.1007/s10008-005-0696-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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29
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Laaksonen T, Ahonen P, Kontturi K, Murtomäki L. Charge transfer at an electrified liquid|liquid interface immobilised in fibre. J Electroanal Chem (Lausanne) 2005. [DOI: 10.1016/j.jelechem.2004.08.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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