Tuneable and low cost molecular electronics
Stability of radical-functionalized gold surfaces by self-assembly and on-surface chemistry
Tobias Junghoefer, Ewa Malgorzata Nowik-Boltyk, J. Alejandro de Sousa, Erika Giangrisostomi, Ruslan Ovsyannikov, Thomas Chassé, Jaume Veciana, Marta Mas-Torrent, Concepció Rovira, Núria Crivillers and Maria Benedetta Casu *
Chem. Sci., 2020,11, 9162-9172
DOI: https://doi.org/10.1039/D0SC03399E
DOI: https://doi.org/10.1039/D0SC03399E
Also at ICMAB
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Organic Polyradicals as Redox Mediators: Effect of Intramolecular Radical Interactions on Their Efficiency
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- 16 February 2021 165 hit(s) Molecular
The spin–spin interactions between unpaired electrons in organic (poly)radicals, especially nitroxides, are largely investigated and are of crucial importance for their applications in areas such as organic magnetism, molecular charge transfer, or multiple spin labeling in structural biology. Recently, 2,2,6,6-tetramethylpiperidinyloxyl and polymers functionalized with nitroxides have been described as successful redox mediators in several electrochemical applications; however, the study of spin–spin interaction effect in such an area is absent. -
Metallacarboranes as Photoredox Catalysts in Water
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- 02 February 2021 265 hit(s) Molecular
Metallacarboranes with the shape of the Greek letter θ, such as [Co(C2B9H11)2]−, were tested, for the first time, as efficient photoredox catalysts in the oxidation of aromatic and aliphatic alcohols in water. Their efficiency is linked to their high solubility in water, their high oxidizing power (Co4+/3+), and their absence of fluorescence on excitation, among others. -
Resistive Switching Observation in a Gallium-Based Liquid Metal/Graphene Junction
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- 22 January 2021 366 hit(s) Molecular
Resistive switching effect is observed for a gallium–indium/gallium oxide/graphene junction. The use of a gallium-based liquid metal (LM) alloy, in this case, the eutectic gallium–indium with its native gallium oxide skin, directly provides the metal top contact and the oxide layer needed to fabricate a memory. -
Electrocatalytic oxidative Z/E isomerization of a stilbene favoured by the presence of an electroactive persistent radical
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- 01 January 2021 328 hit(s) Molecular
A push–pull-functionalized stilbene has been prepared, with an electroactive perchlorotriphenylmethyl (PTM˙) radical and dimethylamine units as electron-withdrawing and -donating moieties, respectively, showing an electrocatalytic redox-induced Z → E isomerization where the open-shell nature of PTM˙ plays a key role in the isomerization ocurrance. -
Nanoscale Mapping of the Conductivity and Interfacial Capacitance of an Electrolyte‐Gated Organic Field‐Effect Transistor under Operation
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- 25 December 2020 362 hit(s) Molecular
Probing nanoscale electrical properties of organic semiconducting materials at the interface with an electrolyte solution under externally applied voltages is key in the field of organic bioelectronics. It is demonstrated that the conductivity and interfacial capacitance of the active channel of an electrolyte‐gated organic field‐effect transistor (EGOFET) under operation can be probed at the nanoscale using scanning dielectric microscopy in force detection mode in liquid environment.
