0000000000637194

AUTHOR

Pierre-antoine Albouy

showing 2 related works from this author

In-Plane Anisotropy and Phase Change in Langmuir-Blodgett Films of a Triphenylene Derivative

1993

Abstract The “in-plane anisotropy” of a triphenylene derivative in Langmuir-Blodgett (L.B.) films has been investigated. Upon heating, L.B. films exhibit a reversible phase transition appearing as an abrupt increase from a low to a high “in-plane anisotropy” corresponding to the formation of the same hexagonal liquid crystal phase observed in the bulk material at almost the same temperature, with the columnar axis aligned along the dipping direction.

Phase transitionCondensed matter physicsChemistryTriphenyleneCondensed Matter PhysicsPhotochemistryLangmuir–Blodgett filmCondensed Matter::Soft Condensed Matterchemistry.chemical_compoundIn planeLiquid crystalCondensed Matter::SuperconductivityPhase (matter)AnisotropyDerivative (chemistry)Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
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Preparation of multi-nanocrystalline transition metal oxide (TiO2–NiTiO3) mesoporous thin films

2005

Ordered mesoporous TiO2–NiTiO3 thin films, with nickel content x < 0.5, were prepared by dip-coating an acidic solution of hydrolysed transition metal chlorides in controlled humidity, followed by a very careful annealing treatment. These latter treatments were studied by in situ SAXS-WAXS experiments involving synchrotron radiation and TEM analysis. They revealed that the walls can be composed of amorphous, single crystalline or multi crystalline nanoparticles depending on x and the conditions applied during the thermal treatment.

ChemistryInorganic chemistryOxideNanoparticleGeneral ChemistryThermal treatmentCatalysisNanocrystalline materialAmorphous solidchemistry.chemical_compoundTransition metalMaterials ChemistryThin filmMesoporous materialNew J. Chem.
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