Ultrafast Voltammetry for Probing Interfacial Electron Transfer in Molecular Wires

Amatore, Christian; Maisonhaute, Emmanuel; Schöllhorn, Bernd; Wadhawan, Jay D.

doi:10.1002/cphc.200600774

Cited by 81 publications

(99 citation statements)

References 79 publications

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“…Under electrochemical conditions, this kind of molecules exhibits interesting switching properties though the control of its ferrocene redox state. [81,[86][87][88] The dissymmetric monothiol parent of this molecule exhibits a fast redox reaction when self-assembled on gold electrodes, [89,90] establishing that electron transport is very efficient through this kind of molecule. Figure 10 shows three typical I-V curves for molecular junctions involving Fc-VPM molecules and different gap widths.…”

Section: Ec-mcbj Study Of Molecular Junctionsmentioning

confidence: 99%

Electrochemically Assisted Fabrication of Metal Atomic Wires and Molecular Junctions by MCBJ and STM‐BJ Methods

et al. 2010

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Atomic wires (point contacts) and molecular junctions are two fundamental units in the fields of nanoelectronics and devices. This Minireview introduces our recent approaches aiming to develop versatile methods to fabricate and characterize these unique metallic and molecular structures reliably. Electrochemical methods are coupled with mechanically controllable break junction (EC-MCBJ) or scanning tunneling microscopy (STM) break junction (EC-STMBJ) methods to fabricate metallic point contacts and metal/molecule/metal junctions. With the designed electrodeposition method, the metal of interest (e.g. Au, Cu, Fe or Pd) is deposited in a controlled way on the original electrode pair, on a chip for MCBJ or on the STM tip, to make the metallic contact. Then, various metal atomic wires and molecular junctions can be fabricated and characterized systematically. Herein, we measured the quantized conductance through the construction of histograms of these metal atomic point contacts and of single molecules including benzene-1,4-dithiol (BDT), ferrocene-bisvinylphenylmethyl dithiol (Fc-VPM), 4,4'-bipyridine (BPY), 1,2-di(pyridin-4-yl)ethene (BPY-EE), and 1,2-di(pyridin-4-yl)ethane (BPY-EA). Finally, we briefly discussed the future of EC-MCBJ and EC-STM for nanoelectronics and devices, for example, for the formation of heterogeneous metal-based atomic point contacts and molecular junctions.

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Section: Ec-mcbj Study Of Molecular Junctionsmentioning

confidence: 99%

Electrochemically Assisted Fabrication of Metal Atomic Wires and Molecular Junctions by MCBJ and STM‐BJ Methods

et al. 2010

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“…Indeed, this method allows for the investigation of extremely fast molecular events that occur within nano-and sub-nanometer distances from a working-electrode surface. [46] Voltammograms obtained upon varying the scan rate over a large range are depicted in Figure 8. At slow scan rates, well-defined bell-shaped curves are obtained (Figure 8a), as expected for adsorbed material.…”

Section: Electroactive Clicked Fullerene Derivativesmentioning

confidence: 99%

The Impact of Copper‐Catalyzed Alkyne–Azide 1,3‐Dipolar Cycloaddition in Fullerene Chemistry

Nierengarten

2014

The Chemical Record

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Click reactions largely cross the borders of organic synthetic chemistry and are now at the forefront of many interdisciplinary studies at the interfaces between chemistry, physics, and biology. As part of this research, our group is involved in a program on the development of clickable fullerene building blocks and their application in the preparation of a large variety of new advanced materials and bioactive compounds. Importantly, the introduction of the click chemistry concept in fullerene chemistry allowed us to produce compounds that would barely be accessible by using the classical tools of fullerene chemistry. This is particularly the case for the conjugation of fullerenes with other carbon nanoforms, such as carbon nanohorns and graphene. It is also the case for most of the sophisticated molecular ensembles constructed from clickable fullerene hexa-adduct building blocks. In this paper, we have summarized our ongoing progress in this particular field.

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“…The bare spherical gold electrode was built following the procedure presented in [12]. The counter electrode was a Pt foil, and the reference electrode was a saturated calomel electrode (SCE).…”

Section: Electrochemistrymentioning

confidence: 99%

Theoretical and Experimental Study of the Homogeneous Catalytic Oxidation of Nicotinamide Adenine Dinucleotide (NADH) at Spherical Gold Electrodes Using Linear Sweep Voltammetry and Chronopotentiometry

et al. 2009

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The homogeneous catalytic oxidation of coenzyme nicotinamide adenine dinucleotide (NADH) with dopamine at a thiolactic acid modified gold spherical electrode of radius 0.0128 cm has been studied in aqueous phosphate media (pH 7.0) using linear sweep voltammetry and chronopotentiometry with power time and exponential time currents. We have proved that, under the conditions of this study, the steady state is reached, in such a way that the expressions for the I À E and dI/dE À E responses are simplified and become independent of time and the electrochemical technique employed. Therefore, the experimental I À E and dI/dE À E curves obtained in chronopotentiometry and linear sweep voltammetry are practically superimposable and, from easy expressions for the peak parameters of the dI/dE À E curves deduced in this paper, values of the chemical and electrochemical rate constants have been obtained.

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Ultrafast Voltammetry for Probing Interfacial Electron Transfer in Molecular Wires

Cited by 81 publications

References 79 publications

Electrochemically Assisted Fabrication of Metal Atomic Wires and Molecular Junctions by MCBJ and STM‐BJ Methods

Electrochemically Assisted Fabrication of Metal Atomic Wires and Molecular Junctions by MCBJ and STM‐BJ Methods

The Impact of Copper‐Catalyzed Alkyne–Azide 1,3‐Dipolar Cycloaddition in Fullerene Chemistry

Theoretical and Experimental Study of the Homogeneous Catalytic Oxidation of Nicotinamide Adenine Dinucleotide (NADH) at Spherical Gold Electrodes Using Linear Sweep Voltammetry and Chronopotentiometry

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