Magnetic Langmuir-Blodgett films of ferritin with different iron loadings

被引：10

作者：

Soriano-Portillo, A

Clemente-León, M

Gómez-García, CJ

Coronado, E ^{[1
]}

Gálvez, N

Colacio, E

Domínguez-Vera, JM

机构：

[1] Univ Granada, Dept Quim Inorgan, E-18071 Granada, Spain

[2] Univ Valencia, Inst Ciencia Mol, E-46100 Burjassot, Spain

来源：

SYNTHETIC METALS | 2005年 / 148卷 / 01期

关键词：

Langmuir-Blodgett films; ferritin; magnetic properties; monolayers; thin films;

D O I：

10.1016/j.synthmet.2004.09.003

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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. (C) 2004 Elsevier B.V. All rights reserved.

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页码：7 / 10

页数：4

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