6533b824fe1ef96bd127ff77
RESEARCH PRODUCT
Nanosheets of Two-Dimensional Magnetic and Conducting Fe(II)/Fe(III) Mixed-Valence Metal-Organic Frameworks.
Cristina Vallés-garcíaPatricia Gómez-claramuntCarlos J. Gómez-garcíaAlexandre AbhervéSamia Benmansoursubject
Materials scienceValence (chemistry)Inorganic chemistry02 engineering and technologyConductivity010402 general chemistry021001 nanoscience & nanotechnology01 natural sciences0104 chemical sciencesElectronegativityCrystallographyFerrimagnetismElectrical resistivity and conductivityMonolayerMoleculeGeneral Materials ScienceMetal-organic framework0210 nano-technologydescription
We report the synthesis, magnetic properties, electrical conductivity, and delamination into thin nanosheets of two anilato-based Fe(II)/Fe(III) mixed-valence two-dimensional metal–organic frameworks (MOFs). Compounds [(H3O)(H2O)(phenazine)3][FeIIFeIII(C6O4X2)3]·12H2O [X = Cl (1) and Br (2)] present a honeycomb layered structure with an eclipsed packing that generates hexagonal channels containing the water molecules. Both compounds show ferrimagnetic ordering at ca. 2 K coexisting with electrical conductivity (with room temperature conductivities of 0.03 and 0.003 S/cm). Changing the X group from Cl to Br leads to a decrease in the ordering temperature and room temperature conductivity that is correlated with the decrease of the electronegativity of X. Despite the ionic charge of the anilato-based layers, these MOFs can be easily delaminated in thin nanosheets with the thickness of a few monolayers.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-07-19 | ACS applied materialsinterfaces |