Biocompatible magnetic fluid precursors based on aspartic and glutamic acid modified maghemite nanostructures

Authors
Sousa, MH Rubim, JC Sobrinho, PG Tourinho, FA
Citation
Mh. Sousa et al., Biocompatible magnetic fluid precursors based on aspartic and glutamic acid modified maghemite nanostructures, J MAGN MAGN, 225(1-2), 2001, pp. 67-72
Citations number
14
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
ISSN journal
03048853 → ACNP
Volume
225
Issue
1-2
Year of publication
2001
Pages
67 - 72
Database
ISI
SICI code
0304-8853(200104)225:1-2<67:BMFPBO>2.0.ZU;2-0
Abstract
Biocompatible magnetic fluid precursors based on chemically modified maghem ite nanostructures (gamma -Fe2O3) are able to chemisorb aspartic and glutam ic acids, as shown by conductometric measurements. The amino acids adsorb o nto the maghemite surface following an adsorption isotherm. The modified na noparticles formed a stable colloidal solution at a pH of 5-8. Raman and FT IR spectroscopy directly showed that the investigated amino acids adsorb on the maghemite surface in the form of their respective salts, glutamate and aspartate. (C) 2001 Published by Elsevier Science B.V.