6533b7dbfe1ef96bd1271397

RESEARCH PRODUCT

Polyoxometalates in Langmuir–Blodgett films: toward new magnetic materials

Christophe MingotaudMiguel Clemente-leónCarlos J. Gómez-garcíaEugenio CoronadoPierre Delhaes

subject

LangmuirChemistryMetals and AlloysSurfaces and InterfacesLangmuir–Blodgett filmSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsCrystallographyParamagnetismAdsorptionX-ray crystallographyPolyoxometalateMonolayerMaterials ChemistryOrganic chemistryMolecule

description

Abstract Polyoxometalates having various structures and properties can be organized by the Langmuir–Blodgett (LB) technique. The adsorption of such polyanions along a positively charged monolayer of DODA (dimethyldioctadecylammonium) induces large changes in the compression isotherm and enables the transfer of the Langmuir film onto solid substrate. X-ray diffraction and infrared dichroism experiments demonstrate that the polyoxometalates are organized in monolayers within the LB films. Furthermore, these magnetic multilayers were characterized by their paramagnetic susceptibility measured by a SQUID magnetometer.

https://doi.org/10.1016/s0040-6090(98)00681-6