Self-assembly of a covalently attached magnetic film from diazoresin and Fe3O4 nanoparticles

被引：10
|
作者：
Lu, CH [1 ]
Luo, CQ [1 ]
Cao, WX [1 ]
机构：
[1] Peking Univ, Coll Chem & Mol Engn, Beijing 100871, Peoples R China
来源：
JOURNAL OF MATERIALS CHEMISTRY | 2003年 / 13卷 / 02期
关键词：
D O I：
10.1039/b207487g
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
On different substrates, such as the quartz wafer, mica and silicon, a stable magnetic ultrathin film was fabricated layer-by-layer using the self-assembly method, through the electrostatic interaction between the polycations of diazoresin (DR) and negatively charged Fe3O4 nanoparticles. The results of UV-Vis spectra, magnetization measurements and AFM for DR-Fe3O4 films show that the assembly is very successful. After UV irradiation, the ionic bonds of the film convert to covalent ones and the stability of the magnetic film against etching by the polar solvents or salting liquids increases dramatically.
引用
收藏
页码：382 / 384
页数：3
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