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

被引：108

作者：

Sousa, MH ^{[1
]}

Rubim, JC ^{[1
]}

Sobrinho, PG ^{[1
]}

Tourinho, FA ^{[1
]}

机构：

[1] Univ Brasilia, Inst Quim, Complex Fluids Grp, BR-70919970 Brasilia, DF, Brazil

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2001年 / 225卷 / 1-2期

关键词：

magnetic fluid; ferrofluids; maghemite nanostructure; aspartate-based ferrofluids; glutamate-based ferrofluids; Raman spectroscopy; adsorption isotherm;

D O I：

10.1016/S0304-8853(00)01229-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Biocompatible magnetic fluid precursors based on chemically modified maghemite nanostructures (gamma -Fe2O3) are able to chemisorb aspartic and glutamic acids, as shown by conductometric measurements. The amino acids adsorb onto the maghemite surface following an adsorption isotherm. The modified nanoparticles formed a stable colloidal solution at a pH of 5-8. Raman and FTIR 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.

引用

页码：67 / 72

页数：6

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