Publications by authors named "V Oison"
We discuss the inhomogeneous stress relaxation of a monolayer of hexahydroxytriphenylene (HHTP) which adopts the rare line-on-line (LOL) coincidence on KCl(001) and forms moiré patterns. The fact that the hexagonal HHTP layer is uniaxially compressed along the LOL makes this system an ideal candidate to discuss the influence of inhomogeneous stress relaxation. Our work is a combination of noncontact atomic force microscopy experiments, density functional theory and potential energy calculations, and a thorough interpretation by means of the Frenkel-Kontorova model.
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- The text discusses a study on the two-dimensional polymerization of 1,4-benzene diboronic acid molecules on the Ag(111) surface, resulting in a covalent organic framework.
- The study evaluates the free enthalpy, considering the constraints from molecular adsorption on the surface, and uses DFT calculations to derive thermodynamic functions like enthalpies, entropies, and free enthalpies.
- The effects of entropy from the surface are highlighted as significant for the polymerization free energy, and a germination threshold for the process has been identified.
Alcohol oxidation and self-assembly: the in situ oxidation of hydroxyl functional groups to quinone groups promotes the formation of enhanced hydrogen bonds and allows reorganization of the resulting supramolecular self-assemblies, which evolve from a weakly bound dense phase to a strongly bound nanoporous open structure (see picture).
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