A5005759251- Surface Chemistry and Catalysis
- Covalent Organic Framework Applications
- Surface and Thin Film Phenomena
- Metal-Organic Frameworks: Synthesis and Applications
- Molecular Junctions and Nanostructures
- Advanced Photocatalysis Techniques
- Luminescence and Fluorescent Materials
- Graphene research and applications
- Crystallization and Solubility Studies
- Protein Structure and Dynamics
- Nanomaterials for catalytic reactions
- Advanced Condensed Matter Physics
- Electron and X-Ray Spectroscopy Techniques
- Pickering emulsions and particle stabilization
- Electrophoretic Deposition in Materials Science
- Photonic Crystals and Applications
- Bacteriophages and microbial interactions
- Metal and Thin Film Mechanics
- Inorganic and Organometallic Chemistry
- Electrochemical Analysis and Applications
- Catalytic Processes in Materials Science
- Biopolymer Synthesis and Applications
- Polymer Surface Interaction Studies
- Catalysis and Oxidation Reactions
- Mesoporous Materials and Catalysis
National University of Singapore
2022-2025
KU Leuven
2019-2022
Franche-Comté Électronique Mécanique Thermique et Optique - Sciences et Technologies
2017-2018
Université Bourgogne Franche-Comté
2017-2018
Observatoire des Sciences de l’Univers Terre Homme Environnement Temps Astronomie
2018
Centre National de la Recherche Scientifique
2017
By using an oriented electric field in a scanning tunneling microscope, one can locally control the condensation of boronic acids at liquid/solid interface. The phase transition between self-assembled molecular networks and covalent organic frameworks is controlled by changing polarity applied bias. electric-field-induced transformation reversible under ambient conditions.
Reducing particle size in supported metal catalysts to single-atom level isolates the active sites and maximizes atomic utilization efficiency. However, large inter-atom distance, particularly low-loading catalyst (SAC), is not favorable for a complex reaction where two (or more) reactants have be activated. A key question how control distances promote dinuclear-type coactivation at adjacent sites. Here, it reported that reducing average distance of copper SACs on carbon nitride (C3 N4 )...
The in situ on-surface conversion process from boroxine-linked covalent organic frameworks (COFs) to boronate ester-linked COFs is triggered and catalyzed at room temperature by an electric field monitored with scanning tunneling microscopy (STM). adaptive behavior within the generated dynamic libraries (DCLs) was revealed, providing in-depth understanding of network switching process.
Synthetic two-dimensional polymers (2DPs) obtained from well-defined monomers via bottom-up fabrication strategies are promising materials that can extend the realm of inorganic 2D materials. The on-surface synthesis such 2DPs is particularly popular, however pathway complexity in growth films formed on solid surfaces poorly understood. In this contribution, we present a straightforward experimental protocol which allows large-area, defect-free based boroxine linkages at room temperature. We...
The role of halogen bonds on the molecular structure large assemblies a weakly reactive surface has been investigated. Our scanning tunneling microscopy (STM) experiments reveal variation compactness along amount within building unit. In brief, we observe an increasing supramolecular structures for zero, one, and two atoms per molecule. experimental results are supported by STM calculations where presence van der Waals interactions was also considered. We found that units adopt structural...
The formation of highly organized structures based on two ligands with pyridyl functionalities, 4,4'-bipyridine (BPY) and 1,4-di(4,4''-pyridyl) benzene (BPYB), Cu adatoms the Cu(111) surface has been studied low temperature variable scanning tunneling microscopy (STM) first-principles calculations. We show that a adlayer built from adatom-molecule molecule-molecule units strongly depends number mobile atoms surface. While high concentration (high adatom/BPY ratio, ≥1) leads systematically to...
The co-deposition of 1,4-di(4',4''-pyridyl)benzene and 1,4-di(4',4''-bromophenyl)benzene on Si(111)-B surface leads to the formation a highly regular self-assembly. this network has been investigated by STM elucidated in light sergeants & soldiers principle due halogen bonding silicon surface.
Over the past decade, on-surface fabrication of organic nanostructures has been widely investigated for development molecular electronic devices, nanomachines, and new materials. Here, we introduce a strategy to obtain alkyl oligomers in controlled manner using radical oligomerisations that are triggered by electrons/holes between sample surface tip scanning tunnelling microscope. The resulting radical-mediated mechanism is substantiated detailed theoretical study. This electron transfer...
Over the past decade, on-surface fabrication of organic nanostructures has been widely investigated for development molecular electronic devices, nanomachines, and new materials. Here, we introduce a strategy to obtain alkyl oligomers in controlled manner using radical oligomerisations that are triggered by electrons/holes between sample surface tip scanning tunnelling microscope. The resulting radical-mediated mechanism is substantiated detailed theoretical study. This electron transfer...