6533b7d8fe1ef96bd126ac4a
RESEARCH PRODUCT
Magnetic Langmuir–Blodgett films of ferritin with different iron loadings
Carlos J. Gómez-garcíaEnrique ColacioMiguel Clemente-leónEugenio CoronadoNatividad GálvezJosé M. Domínguez-veraAlejandra Soriano-portillosubject
Mechanical EngineeringMetals and AlloysAnalytical chemistryCoercivityCondensed Matter PhysicsLangmuir–Blodgett filmElectronic Optical and Magnetic Materialschemistry.chemical_compoundMagnetizationAdsorptionchemistryMechanics of MaterialsBromideMonolayerMaterials ChemistryOrganic chemistrySpectroscopySuperparamagnetismdescription
Abstract Magnetic Langmuir–Blodgett multilayers of two ferritin molecules 1 and 2 , containing, respectively, 4220 and 3062 Fe atoms have been prepared by using the adsorption properties of a 6/1 mixed monolayer of dioctadecyldimethylammonium bromide (DODABr) and methyl stearate (SME). Transfer ratios close to unity were reached giving rise to LB films with a strong red colour. Infrared and UV–vis spectroscopy indicates that ferritin molecules are incorporated within the LB films. Magnetic measurements show that the superparamagnetic properties of these molecules are preserved. Thus, a marked hysteresis loop of magnetisation is obtained for LB films of 1 and 2 with a coercive field of 3400 and 2400 G, respectively.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2005-01-01 | Synthetic Metals |