Electro-polymerization rates of diazonium salts are dependent on the crystal orientation of the surface

Rahpeima, Soraya; Brun, Anton Le; Raston, Colin L.; Darwish, Nadim

doi:10.1016/j.jcis.2022.07.014

Cited by 3 publications

(2 citation statements)

References 76 publications

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“…A larger Q ads reveals higher accumulation efficiency towards NFZ, maybe due to the stronger interaction forces between NFZ and oxygen-containing groups, 38,39 as well as due to the different surface charges. 40,41 In conclusion, graphene oxidized at 1.4 V for 120 s (i.e. EGS-1.4) exhibits higher electron transfer ability and stronger adsorption ability toward NFZ oxidation.…”

Section: Enhanced Oxidation Of Nfz On Different Electrodesmentioning

confidence: 88%

Electrochemically functionalized graphene for highly sensitive detection of nitrofurazone

Yin

Cui

Ling

et al. 2022

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Section: Enhanced Oxidation Of Nfz On Different Electrodesmentioning

confidence: 88%

Electrochemically functionalized graphene for highly sensitive detection of nitrofurazone

Yin

Cui

Ling

et al. 2022

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“…In recent years, there has been increasing interest in modifying Si with organic monolayers to form a hybrid technology that combines the semiconducting properties of silicon with the properties of organic molecules. – The applications of this technology include sensors, – photovoltaics, – and molecular electronics devices. – In most of these applications, the typical procedure is first to remove the natural oxide layer that forms on the Si surface to expose the reactive Si–H surface. The Si–H surface is then reacted via a hydrosilylation reaction mainly with alkenes or alkynes. ,– The reaction yields an organic monolayer of density ∼50%, and the remaining unreacted sites stay as Si–H.…”

Section: Introductionmentioning

confidence: 99%

Terminal Deuterium Atoms Protect Silicon from Oxidation

Li,

Peiris,

Aragonès

et al. 2023

ACS Appl. Mater. Interfaces

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In recent years, the hybrid silicon-molecular electronics technology has been gaining significant attention for applications in sensors, photovoltaics, power generation, and molecular electronics devices. However, Si–H surfaces, which are the platforms on which these devices are formed, are prone to oxidation, compromising the mechanical and electronic stability of the devices. Here, we show that when hydrogen is replaced by deuterium, the Si–D surface becomes significantly more resistant to oxidation when either positive or negative voltages are applied to the Si surface. Si–D surfaces are more resistant to oxidation, and their current–voltage characteristics are more stable than those measured on Si–H surfaces. At positive voltages, the Si–D stability appears to be related to the flat band potential of Si–D being more positive compared to Si–H surfaces, making Si–D surfaces less attractive to oxidizing OH– ions. The limited oxidation of Si–D surfaces at negative potentials is interpreted by the frequencies of the Si–D bending modes being coupled to that of the bulk Si surface phonon modes, which would make the duration of the Si–D excited vibrational state significantly less than that of Si–H. The strong surface isotope effect has implications in the design of silicon-based sensing, molecular electronics, and power-generation devices and the interpretation of charge transfer across them.

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Molecular electronics: an Australian perspective

Reimers

Low

2023

Aust. J. Chem.

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Molecular electronics is a scientific endeavour that, for 60 years, has offered the promise of new technologies in which molecules integrate with, if not entirely replace, semiconductor electronics. En route to the attainment of these ambitious goals, central aspects underpinning the pursuit of this science have proven critical to the development of related technologies, including organic photovoltaics (OPV) and organic light-emitting diodes (OLEDs). Looking ahead, new opportunities in the field abound, from the study of molecular charge transport and the elucidation of molecular reaction mechanisms, to the development of biocompatible and degradable electronics, and the construction of novel chemical sensors with exquisite sensitivity and specificity. This article reviews historical developments in molecular electronics, with a particular focus on Australia’s contributions to the area. Australia’s current activity in molecular electronics research is also summarised, highlighting the capacity to both advance fundamental knowledge and develop new technologies. Scientific aspects considered include capabilities in: single molecule and molecular–monolayer junction measurement; spectroscopic analysis of molecular components and materials; synthetic chemistry; computational analysis of molecular materials and junctions; and the development of theoretical concepts that describe the electrical characteristics of molecular components, materials and putative device structures. Technological aspects considered include various aspects of molecular material design and implementation, such as: OPV and OLED construction, sensing technologies and applications, and power generation from heat gradients or friction. Missing capabilities are identified, and a future pathway for Australian scientific and technological development envisaged.

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Electro-polymerization rates of diazonium salts are dependent on the crystal orientation of the surface

Cited by 3 publications

References 76 publications

Electrochemically functionalized graphene for highly sensitive detection of nitrofurazone

Electrochemically functionalized graphene for highly sensitive detection of nitrofurazone

Terminal Deuterium Atoms Protect Silicon from Oxidation

Molecular electronics: an Australian perspective

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