A5063346019- Polyoxometalates: Synthesis and Applications
- Conducting polymers and applications
- Advanced Nanomaterials in Catalysis
- Electrocatalysts for Energy Conversion
- Electrochemical Analysis and Applications
- Molecular Junctions and Nanostructures
- Advanced Memory and Neural Computing
- Fuel Cells and Related Materials
- Nanowire Synthesis and Applications
- Analytical Chemistry and Sensors
- Electronic and Structural Properties of Oxides
- Electron and X-Ray Spectroscopy Techniques
- Neural dynamics and brain function
- Machine Learning in Materials Science
- Neural Networks and Reservoir Computing
- Transition Metal Oxide Nanomaterials
Institut d'électronique de microélectronique et de nanotechnologie
2022-2024
Centre National de la Recherche Scientifique
2021-2024
Université de Lille
2022-2024
Interfaces Traitements Organisation et Dynamique des Systèmes
2021
Université Paris Cité
2021
We highlight the key role of counterions in modulating conductance molecular junctions polyoxometalate monolayers self-assembled on flat gold electrodes, connected by tip a conductive atomic force microscope.
We demonstrate the reversible in situ photoreduction of molecular junctions a phosphomolybdate [PMo12O40]3- monolayer self-assembled on flat gold electrodes, connected by tip conductive atomic force microscope. The conductance one electron reduced [PMo12O40]4- junction is increased ∼10, and this open-shell state stable air at room temperature. analysis large current-voltage dataset unsupervised machine learning clustering algorithms reveals that transport pristine leads to symmetric curves,...
We demonstrate a high electron conductivity (>102 S/cm and up to 103 S/cm) of tungsten suboxide W18O52.4−52.9 (or equivalently WO2.91−2.94) nanotubes (2–3 nm in diameter, ∼μm long). The is measured the temperature range 120–300 K by four-probe scanning tunneling microscope ultrahigh vacuum. are synthesized low-temperature low-cost solvothermal method. They self-assemble bundles hundreds forming nanowires (∼μm long, few tens wide). observe large anisotropy with ratio (longitudinal...
We study the low-frequency noise (LFN), i.e. flicker noise, also referred to as 1/f in 2D networks of molecularly functionalized gold nanoparticles (NMN: nanoparticle-molecule network). examine behaviors NMN hosting alkyl chains (octanethiol), fatty acid oleic acids (oleylamine), redox molecule switches (polyoxometalate derivatives) or photo-isomerizable molecules (azobenzene and we compare their behaviors. These metrics are used evaluate which best candidates build in-materio reservoir...
This work describes an electrochemical bottom-up approach for the modification of carbon and gold electrodes with two nanometer-thick molecular layers. The strategy adopted is based on successive electroreductions a diazonium salt used in fabrication junctions titanium/gold contacts. ultrathin layers deposited are electron donor, oligo(bisthienylbenzene) (BTB), acceptor, oligo(phenyl methylviologen) (PMV). bilayers generated characterized by atomic force microscopy (AFM), X-ray photoelectron...
Polyoxometalates are nanoscale molecular oxides with promising properties that currently explored for molecule-based memory devices. In this work, we synthesize a series of Preyssler polyoxometalates (POMs), (Na-P5W30O110)14-,stabilized four different counterions, H+, K+, NH4+ and tetrabutylammonium (TBA+), study the electron transport at (conductive atomic force microscopy, C-AFM) junctions formed by self-assembled monolayers (SAMs) POMs electrostatically deposited on ultraflat gold surface...
We demonstrate a high electron conductivity (> 10^2 S/cm and up to 10^3 S/cm) of tungsten suboxide W18O(52.4-52.9)(or equivalently WO(2.91-2.94)) nanotubes (2 3 nm in diameter, ca. micrometer long). The is measured the temperature range 120 300K by four probe scanning tunneling microscope ultra vacuum. are synthesized low cost solvothermal method. They selfassemble bundles hundreds forming nanowires (ca. long, few tens wide). observe large anisotropy with ratio (longitudinal...