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Zhou P, Qiao X, Milan DC, Higgins SJ, Vezzoli A, Nichols RJ. Enhanced charge transport across molecule-nanoparticle-molecule sandwiches. Phys Chem Chem Phys 2023; 25:7176-7183. [PMID: 36810584 DOI: 10.1039/d2cp05525b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
The electrical properties of large area molecular devices consisting of gold nanoparticles (GNPs) sandwiched between a double layer of alkanedithiol linkers have been examined. These devices have been fabricated by a facile bottom-up assembly in which an alkanedithiol monolayer is first self-assembled on an underlying gold substrate followed by nanoparticle adsorption and then finally assembly of the top alkanedithiol layer. These devices are then sandwiched between the bottom gold substrates and a top eGaIn probe contact and current-voltage (I-V) curves recorded. Devices have been fabricated with 1,5-pentanedithiol, 1,6-hexanedithiol, 1,8-octanedithiol and 1,10-decanedithiol linkers. In all cases the electrical conductance of the double SAM junctions with GNPs is higher than the corresponding and much thinner single alkanedithiol SAM. Competing models for this enhanced conductance are discussed and it is suggested to have a topological origin arising from how the devices assemble or structure during the fabrication, which gives more efficient cross device electron transport pathways without the GNPs producing short circuits.
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Affiliation(s)
- P Zhou
- Yangzhou Polytechnic Institute, No. 199, Huayang West Road, Yangzhou City, Jiangsu Province, China.,Department of Chemistry, University of Liverpool, Crown St, Liverpool, L69 7ZD, UK.
| | - X Qiao
- Department of Chemistry, University of Liverpool, Crown St, Liverpool, L69 7ZD, UK.
| | - D C Milan
- Department of Chemistry, University of Liverpool, Crown St, Liverpool, L69 7ZD, UK.
| | - S J Higgins
- Department of Chemistry, University of Liverpool, Crown St, Liverpool, L69 7ZD, UK.
| | - A Vezzoli
- Department of Chemistry, University of Liverpool, Crown St, Liverpool, L69 7ZD, UK.
| | - R J Nichols
- Department of Chemistry, University of Liverpool, Crown St, Liverpool, L69 7ZD, UK.
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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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Wagner M, Qvortrup K, Grier KE, Ottosen MR, Petersen JO, Tanner D, Ulstrup J, Zhang J. Gold-carbonyl group interactions in the electrochemistry of anthraquinone thiols self-assembled on Au(111)-surfaces. Chem Sci 2019; 10:3927-3936. [PMID: 31015932 PMCID: PMC6457334 DOI: 10.1039/c9sc00061e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Accepted: 03/02/2019] [Indexed: 11/21/2022] Open
Abstract
New anthraquinone derivatives with either a single or two thiol groups (AQ1 and AQ2) were synthesized and immobilized in self-assembled monolayers (SAMs) on Au(111) electrodes via Au-S bonds. The resultant AQ1- and AQ2-SAMs were studied by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS), which enabled mapping of the gold-carbonyl group interactions and other dynamics in the Au-S bound molecular framework. Understanding of these interactions is important for research on thiol-coated gold nanoclusters, since (I) anthraquinone derivatives are a major compound family for providing desired redox functionality in multifarious assays or devices, and (II) the gold-carbonyl interactions can strongly affect anthraquinone electrochemistry. Based on equivalent circuit analysis, it was found that there is a significant rise in polarization resistance (related to SAM structural reorganization) at potentials that can be attributed to the quinone/semi-quinone interconversion. The equivalent circuit model was validated by calculation of pseudocapacitance for quinone-to-hydroquinone interconversion, in good agreement with the values derived from CV. The EIS and CV patterns obtained provide consistent evidence for two different ECEC (i.e. proton-controlled ET steps, PCET) pathways in AQ1- and AQ2-SAMs. Notably, it was found that the formal reorganization (free) energies obtained for the elementary PCET steps are unexpectedly small for both SAMs studied. This anomaly suggests high layer rigidity and recumbent molecular orientation on gold surfaces, especially for the AQ2-SAMs. The results strongly indicate that gold-carbonyl group interactions can be controlled by favorable structural organization of anthraquinone-based molecules on gold surfaces.
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Affiliation(s)
- Michal Wagner
- Department of Chemistry , Technical University of Denmark , Kemitorvet, Building 207 , 2800 Kgs. Lyngby , Denmark .
| | - Katrine Qvortrup
- Department of Chemistry , Technical University of Denmark , Kemitorvet, Building 207 , 2800 Kgs. Lyngby , Denmark .
| | - Katja E Grier
- Department of Chemistry , Technical University of Denmark , Kemitorvet, Building 207 , 2800 Kgs. Lyngby , Denmark .
| | - Mikkel R Ottosen
- Department of Chemistry , Technical University of Denmark , Kemitorvet, Building 207 , 2800 Kgs. Lyngby , Denmark .
| | - Jonas O Petersen
- Department of Chemistry , Technical University of Denmark , Kemitorvet, Building 207 , 2800 Kgs. Lyngby , Denmark .
| | - David Tanner
- Department of Chemistry , Technical University of Denmark , Kemitorvet, Building 207 , 2800 Kgs. Lyngby , Denmark .
| | - Jens Ulstrup
- Department of Chemistry , Technical University of Denmark , Kemitorvet, Building 207 , 2800 Kgs. Lyngby , Denmark .
| | - Jingdong Zhang
- Department of Chemistry , Technical University of Denmark , Kemitorvet, Building 207 , 2800 Kgs. Lyngby , Denmark .
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Synthesis of Au clusters-redox centre hybrids by diazonium chemistry employing double layer charged gold nanoparticles. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2017.05.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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7
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Razzaq H, Saira F, Yaqub A, Qureshi R, Mumtaz M, Saleemi S. Interaction of gold nanoparticles with free radicals and their role in enhancing the scavenging activity of ascorbic acid. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 161:266-72. [DOI: 10.1016/j.jphotobiol.2016.04.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 04/01/2016] [Accepted: 04/04/2016] [Indexed: 12/16/2022]
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8
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Ghandi K, Findlater AD, Mahimwalla Z, MacNeil CS, Awoonor-Williams E, Zahariev F, Gordon MS. Ultra-fast electron capture by electrosterically-stabilized gold nanoparticles. NANOSCALE 2015; 7:11545-51. [PMID: 26036895 DOI: 10.1039/c5nr02291f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Ultra-fast pre-solvated electron capture has been observed for aqueous solutions of room-temperature ionic liquid (RTIL) surface-stabilized gold nanoparticles (AuNPs; ∼9 nm). The extraordinarily large inverse temperature dependent rate constants (k(e)∼ 5 × 10(14) M(-1) s(-1)) measured for the capture of electrons in solution suggest electron capture by the AuNP surface that is on the timescale of, and therefore in competition with, electron solvation and electron-cation recombination reactions. The observed electron transfer rates challenge the conventional notion that radiation induced biological damage would be enhanced in the presence of AuNPs. On the contrary, AuNPs stabilized by non-covalently bonded ligands demonstrate the potential to quench radiation-induced electrons, indicating potential applications in fields ranging from radiation therapy to heterogeneous catalysis.
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Affiliation(s)
- Khashayar Ghandi
- Department of Chemistry & Biochemistry, Mount Allison University, Sackville, NB, CanadaE4L 1G8.
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Walgama C, Nerimetla R, Materer NF, Schildkraut D, Elman JF, Krishnan S. A Simple Construction of Electrochemical Liver Microsomal Bioreactor for Rapid Drug Metabolism and Inhibition Assays. Anal Chem 2015; 87:4712-8. [DOI: 10.1021/ac5044362] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Charuksha Walgama
- Department
of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, United States
| | - Rajasekhara Nerimetla
- Department
of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, United States
| | - Nicholas F. Materer
- Department
of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, United States
| | - Deniz Schildkraut
- Filmetrics Application Lab—Rochester, 250 Packett’s Landing, Fairport, New York 14450, United States
| | - James F. Elman
- Filmetrics Application Lab—Rochester, 250 Packett’s Landing, Fairport, New York 14450, United States
| | - Sadagopan Krishnan
- Department
of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, United States
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