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Shermukhamedov SA, Nazmutdinov RR, Zinkicheva TT, Bronshtein MD, Zhang J, Mao B, Tian Z, Yan J, Wu DY, Ulstrup J. Electronic Spillover from a Metallic Nanoparticle: Can Simple Electrochemical Electron Transfer Processes Be Catalyzed by Electronic Coupling of a Molecular Scale Gold Nanoparticle Simultaneously to the Redox Molecule and the Electrode? J Am Chem Soc 2020; 142:10646-10658. [DOI: 10.1021/jacs.9b09362] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Shokirbek A. Shermukhamedov
- Kazan National Research Technological University, K. Marx Street, 68, 420015 Kazan, Republic of Tatarstan, Russian Federation
| | - Renat R. Nazmutdinov
- Kazan National Research Technological University, K. Marx Street, 68, 420015 Kazan, Republic of Tatarstan, Russian Federation
| | - Tamara T. Zinkicheva
- Kazan National Research Technological University, K. Marx Street, 68, 420015 Kazan, Republic of Tatarstan, Russian Federation
| | - Michael D. Bronshtein
- Kazan National Research Technological University, K. Marx Street, 68, 420015 Kazan, Republic of Tatarstan, Russian Federation
| | - Jingdong Zhang
- Department of Chemistry, Bldg. 207, Technical University of Denmark, DK-2800, Kgs. Lyngby, Denmark
| | - Bingwei Mao
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, People’s Republic of China
| | - Zhongqun Tian
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, People’s Republic of China
| | - Jiawei Yan
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, People’s Republic of China
| | - De-Yin Wu
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, People’s Republic of China
| | - Jens Ulstrup
- Kazan National Research Technological University, K. Marx Street, 68, 420015 Kazan, Republic of Tatarstan, Russian Federation
- Department of Chemistry, Bldg. 207, Technical University of Denmark, DK-2800, Kgs. Lyngby, Denmark
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Herrera SE, Davia FG, Williams FJ, Calvo EJ. Metal Nanoparticle Enhancement of Electron Transfer to Tethered Redox Centers through Self-Assembled Molecular Films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:6297-6303. [PMID: 31012590 DOI: 10.1021/acs.langmuir.9b00280] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Metal-nanoparticle-mediated electron transfer (ET) across an insulator thin film containing nanoparticles with attached redox centers was studied using electrochemical impedance spectroscopy. Specifically, a gold spherical microelectrode was modified with 16-amino-1-hexa-decanethiol, creating an insulator film. This was followed by the electrostatic adsorption of gold nanoparticles and the covalent attachment of Os2+ redox centers. A variation of the Creager-Wooster method was developed to get quantitative information regarding the ET kinetics of the system. The experimental data obtained from a single measurement was fitted with a model that decouples two or more ET processes with different time constants and considers a Gaussian distribution of tunneling distances. Two parallel ET mechanisms were observed: one in which the electrons flow by tunneling between the surface and the redox couples with a low kET0 = 1.3 s-1 and a second one in which an enhancement of the electron transfer is produced due to the presence of the gold nanoparticles with a kET0 = 7 × 104 s-1. In this study, we demonstrate that the gold nanoparticle electron transfer enhancement is present only in the local environment of the nanoparticle, showing that the nanoscale architecture is crucial to maximize the enhancement effect.
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Affiliation(s)
- Santiago E Herrera
- Departamento de Química Inorgánica, Analítica y Química Física, INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales , Universidad de Buenos Aires , Ciudad Universitaria, Pabellón 2 , Buenos Aires C1428EHA , Argentina
| | - Federico G Davia
- Departamento de Química Inorgánica, Analítica y Química Física, INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales , Universidad de Buenos Aires , Ciudad Universitaria, Pabellón 2 , Buenos Aires C1428EHA , Argentina
| | - Federico J Williams
- Departamento de Química Inorgánica, Analítica y Química Física, INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales , Universidad de Buenos Aires , Ciudad Universitaria, Pabellón 2 , Buenos Aires C1428EHA , Argentina
| | - Ernesto J Calvo
- Departamento de Química Inorgánica, Analítica y Química Física, INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales , Universidad de Buenos Aires , Ciudad Universitaria, Pabellón 2 , Buenos Aires C1428EHA , Argentina
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3
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Chen F, Haddour N, Frenea-Robin M, Chevolot Y, Monnier V. Polyamidoamine Dendrimers as Crosslinkers for Efficient Electron Transfer between Redox Probes onto Magnetic Nanoparticles. ChemistrySelect 2018. [DOI: 10.1002/slct.201703135] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Feixiong Chen
- Université de Lyon, Ecole Centrale de Lyon, UMR CNRS 5270; Institut des Nanotechnologies de Lyon, UMR CNRS 5270; Ecully, F- 69130 France
| | - Naoufel Haddour
- Université de Lyon, Ecole Centrale de Lyon, CNRS, UMR 5005; Laboratoire Ampère; Ecully, F- 69130 France
| | - Marie Frenea-Robin
- Université de Lyon, Université Lyon 1, CNRS, UMR 5005; Laboratoire Ampère; Villeurbanne, F- 69622 France
| | - Yann Chevolot
- Université de Lyon, Ecole Centrale de Lyon, UMR CNRS 5270; Institut des Nanotechnologies de Lyon, UMR CNRS 5270; Ecully, F- 69130 France
| | - Virginie Monnier
- Université de Lyon, Ecole Centrale de Lyon, UMR CNRS 5270; Institut des Nanotechnologies de Lyon, UMR CNRS 5270; Ecully, F- 69130 France
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Kashi MB, Silva SM, Yang Y, Gonçales VR, Parker SG, Barfidokht A, Ciampi S, Gooding JJ. Light-activated electrochemistry without surface-bound redox species. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.08.127] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Anderson MJ, Crooks RM. Microfluidic Surface Titrations of Electroactive Thin Films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:7053-7061. [PMID: 28665618 DOI: 10.1021/acs.langmuir.7b01542] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We report the use of microfluidic surface titrations (MSTs) for studying electroactive self-assembled monolayers (eSAMs) and other thin films. The technique of MST utilizes a microfluidic generation-collection dual channel electrode (DCE) configuration to quantify the charge associated with electroactive thin films that might or might not be in direct contact with an electrode surface. This technique allows for quantitative measurement of surface coverages, Γ, as low as 30 pmol cm-2 for electrodeposited Cu thin films. Additionally, we show that it is possible to quantify Γ for ferrocene (Fc)-terminated alkylthiols in mixed-monolayer eSAMs. Interestingly, MSTs sometimes reveal a two-fold higher eSAM concentration compared to direct electrochemical measurements. This finding suggests that in these instances not all the constituent Fc-moieties of the eSAM are in sufficiently close proximity to the surface to be addressable via direct electrochemistry.
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Affiliation(s)
- Morgan J Anderson
- Department of Chemistry, The University of Texas at Austin , 105 East 24th Street, Stop A5300, Austin, Texas 78712-1224, United States
| | - Richard M Crooks
- Department of Chemistry, The University of Texas at Austin , 105 East 24th Street, Stop A5300, Austin, Texas 78712-1224, United States
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6
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Dauphin-Ducharme P, Plaxco KW. Maximizing the Signal Gain of Electrochemical-DNA Sensors. Anal Chem 2016; 88:11654-11662. [PMID: 27805364 DOI: 10.1021/acs.analchem.6b03227] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Electrochemical DNA (E-DNA) sensors have emerged as a promising class of biosensors capable of detecting a wide range of molecular analytes (nucleic acids, proteins, small molecules, inorganic ions) without the need for exogenous reagents or wash steps. In these sensors, a binding-induced conformational change in an electrode-bound "probe" (a target-binding nucleic acid or nucleic-acid-peptide chimera) alters the location of an attached redox reporter, leading to a change in electron transfer that is typically monitored using square-wave voltammetry. Because signaling in this class of sensors relies on binding-induced changes in electron transfer rate, the signal gain of such sensors (change in signal upon the addition of saturating target) is dependent on the frequency of the square-wave potential pulse used to interrogate them, with the optimal square-wave frequency depending on the structure of the probe, the nature of the redox reporter, and other features of the sensor. Here, we show that, because it alters the driving force of the redox reaction and thus electron transfer kinetics, signal gain in this class of sensors is also strongly dependent on the amplitude of the square-wave potential pulse. Specifically, we show here that the simultaneous optimization of square-wave frequency and amplitude produces large (often more than 2-fold) increases in the signal gain of a wide range of E-DNA-type sensors.
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Affiliation(s)
- Philippe Dauphin-Ducharme
- Department of Chemistry and Biochemistry, and ‡Center for Bioengineering, University of California Santa Barbara , Santa Barbara, California 93106, United States
| | - Kevin W Plaxco
- Department of Chemistry and Biochemistry, and ‡Center for Bioengineering, University of California Santa Barbara , Santa Barbara, California 93106, United States
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Young SL, Kellon JE, Hutchison JE. Small Gold Nanoparticles Interfaced to Electrodes through Molecular Linkers: A Platform to Enhance Electron Transfer and Increase Electrochemically Active Surface Area. J Am Chem Soc 2016; 138:13975-13984. [PMID: 27681856 DOI: 10.1021/jacs.6b07674] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
For the smallest nanostructures (<5 nm), small changes in structure can lead to significant changes in properties and reactivity. In the case of nanoparticle (NP)-functionalized electrodes, NP structure and composition, and the nature of the NP-electrode interface have a strong influence upon electrochemical properties that are critical in applications such as amperometric sensing, photocatalysis and electrocatalysis. Existing methods to fabricate NP-functionalized electrodes do not allow for precise control over all these variables, especially the NP-electrode interface, making it difficult to understand and predict how structural changes influence NP activity. We investigated the electrochemical properties of small (dcore < 2.5 nm) gold nanoparticles (AuNPs) on boron doped diamond electrodes using three different electrode fabrication techniques with varying degrees of nanoparticle-electrode interface definition. Two methods to attach AuNPs to the electrode through a covalently bound molecular linker were developed and compared to NP-functionalized electrodes fabricated using solution deposition methods (drop-casting and physiadsorption of a monolayer). In each case, a ferrocene redox probe was tethered to the AuNP surface to evaluate electron transfer through the AuNPs. The AuNPs that were molecularly interfaced with the electrode exhibited nearly ideal, reproducible electrochemical behavior with narrow redox peaks and small peak separations, whereas the solution deposited NPs had broader redox peaks with large peak separations. These data suggest that the molecular tether facilitates AuNP-mediated electron transfer. Interestingly, the molecularly tethered NPs also had significantly more electrochemically active surface area than the solution deposited NPs. The enhanced electrochemical behavior of the molecularly interfaced NPs demonstrates the significant influence of the interface on NP-mediated electron transfer and suggests that similar modified electrodes can serve as versatile platforms for studies and applications of nanoparticles.
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Affiliation(s)
- Samantha L Young
- Department of Chemistry and Biochemistry and Materials Science Institute, 1253 University of Oregon , Eugene, Oregon 97403-1253, United States
| | - Jaclyn E Kellon
- Department of Chemistry and Biochemistry and Materials Science Institute, 1253 University of Oregon , Eugene, Oregon 97403-1253, United States
| | - James E Hutchison
- Department of Chemistry and Biochemistry and Materials Science Institute, 1253 University of Oregon , Eugene, Oregon 97403-1253, United States
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Kashi MB, Wu Y, Gonçales VR, Choudhury MH, Ciampi S, Gooding JJ. Silicon–SAM–AuNP electrodes: Electrochemical “switching” and stability. Electrochem commun 2016. [DOI: 10.1016/j.elecom.2016.06.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Onoda A, Taniguchi T, Inoue N, Kamii A, Hayashi T. Anchoring Cytochrome
b
562
on a Gold Nanoparticle by a Heme–Heme Pocket Interaction. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600301] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Akira Onoda
- Department of Applied ChemistryGraduate School of EngineeringOsaka University2‐1 Yamadaoka565‐0871SuitaJapan
| | - Tomoaki Taniguchi
- Department of Applied ChemistryGraduate School of EngineeringOsaka University2‐1 Yamadaoka565‐0871SuitaJapan
| | - Nozomu Inoue
- Department of Applied ChemistryGraduate School of EngineeringOsaka University2‐1 Yamadaoka565‐0871SuitaJapan
| | - Ayumi Kamii
- Department of Applied ChemistryGraduate School of EngineeringOsaka University2‐1 Yamadaoka565‐0871SuitaJapan
| | - Takashi Hayashi
- Department of Applied ChemistryGraduate School of EngineeringOsaka University2‐1 Yamadaoka565‐0871SuitaJapan
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Castañeda AD, Alligrant TM, Loussaert JA, Crooks RM. Electrocatalytic amplification of nanoparticle collisions at electrodes modified with polyelectrolyte multilayer films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:876-885. [PMID: 25568965 DOI: 10.1021/la5043124] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We report electrochemical catalytic amplification of individual collisions between ∼57 nm diameter Pt nanoparticles (Pt NPs) and 12.5 μm diameter Au ultramicroelectrodes modified with passivating, electrostatically assembled polyelectrolyte multilayer (PEM) films prepared by the layer-by-layer deposition method. Two key findings are reported. First, despite the thicknesses of the insulating PEM films, which range up to 5 nm, electrons are able to tunnel from the Pt NPs to the electrode resulting in electrocatalytic N2H4 oxidation at the PEM film-solution interface. These single-particle measurements are in accord with prior reports showing that the electrochemical activity of passive PEM films can be reactivated by adsorption of metallic NPs. Second, it is possible to control the frequency of the collisions by manipulating the net electrostatic charge present on the outer surface of the PEM thin film. These results, which demonstrate that chemistry can be used to control electrocatalytic amplification, set the stage for future sensing applications.
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Affiliation(s)
- Alma D Castañeda
- Department of Chemistry, Center for Electrochemistry, and the Center for Nano- and Molecular Science and Technology, The University of Texas at Austin , 105 East 24th Street, Stop A5300, Austin, Texas 78712-1224, United States
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11
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Choudhary M, Ul Islam R, Witcomb MJ, Mallick K. In situ generation of a high-performance Pd-polypyrrole composite with multi-functional catalytic properties. Dalton Trans 2014; 43:6396-405. [PMID: 24604337 DOI: 10.1039/c3dt53567c] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report on a bottom up approach for the synthesis of a Pd-polypyrrole nanocomposite material. The composite material was characterized by means of different techniques, such as UV-vis, IR, and Raman spectroscopy, which offered information about the chemical structure of the polymer, whereas electron microscopy images provided information regarding the morphology of the composite material and the distribution of the metal particles in the polymer matrix. During the synthesis of the nanocomposite, the Pd nanoparticles act as a catalyst for a model proton-coupled electron transfer reaction. The Pd-polypyrrole nanocomposite material was also used as a catalyst for the electro-catalytic detection of tryptophan, a precursor for some neurotransmitters.
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Affiliation(s)
- Meenakshi Choudhary
- Department of Chemistry, University of Johannesburg, P.O. Box 524, Auckland Park 2006, South Africa.
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Akkilic N, Kamran M, Stan R, Sanghamitra NJM. Voltage-controlled fluorescence switching of a single redox protein. Biosens Bioelectron 2014; 67:747-51. [PMID: 25103339 DOI: 10.1016/j.bios.2014.07.051] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Revised: 07/14/2014] [Accepted: 07/22/2014] [Indexed: 02/07/2023]
Abstract
Heterogeneous electron transfer (ET) of the redox protein, wild-type azurin (wt-Az) from Pseudomonas aeruginosa, was monitored at the single-molecule (SM) level by fluorescence resonance energy transfer (FRET), one electron at a time. Azurin molecules were labeled with an organic fluorophore (Cy5), and the FRET-coupling between Cy5 and the redox center (copper) was used to study ET to a semi-transparent, 10nm thin gold electrode in an optical configuration. By using a confocal microscope and a bipotentiostat for control of the electrode potential, the oxidation and reduction processes of individual Az-Cy5 molecules were monitored. In the oxidized state of the redox center of the azurin molecule, the fluorescence emission of the covalently attached Cy5 was largely quenched by FRET ('off'-state), whereas the emission was recovered upon reduction ('on'-state). The work presented here, shows directly controlled single redox switching events of an individual redox protein and its thermodynamic dispersion. We show that the distribution of midpoint potentials (E0) of individual azurin molecules peaks at 45.7±0.5 mV with a full width at half maximum of 15 mV vs saturated calomel electrode (SCE).
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Affiliation(s)
- Namik Akkilic
- Leiden Institute of Physics, Huygens Laboratory, Leiden University, Leiden, The Netherlands.
| | - Muhammad Kamran
- Leiden Institute of Physics, Huygens Laboratory, Leiden University, Leiden, The Netherlands
| | - Razvan Stan
- Leiden Institute of Physics, Huygens Laboratory, Leiden University, Leiden, The Netherlands
| | - Nusrat J M Sanghamitra
- Leiden Institute of Physics, Huygens Laboratory, Leiden University, Leiden, The Netherlands
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Choudhary M, Siwal S, Ul Islam R, Witcomb MJ, Mallick K. Polymer stabilized silver nanoparticle: An efficient catalyst for proton-coupled electron transfer reaction and the electrochemical recognition of biomolecule. Chem Phys Lett 2014. [DOI: 10.1016/j.cplett.2014.05.101] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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