title: Ethylenediaminetetraacetic acid as capping ligands for highly water-dispersible iron oxide particles.
abstract: Monodispersed magnetite (Fe3O4) particles were synthesized using a high-temperature hydrolysis reaction with the assistance of ethylenediaminetetraacetic acid (EDTA) as capping ligands. These particles were composed of small primary nanocrystals and their sizes could be tuned from about 400 to about 800 nm by simply changing the EDTA or precursor concentration. Surface-tethered EDTA made the particles highly water-dispersible. The as-prepared magnetite particles also showed superparamagnetic behavior at room temperature, and their magnetic properties were size dependent. In addition, the particles had a strong response to external magnetic field due to their high magnetization saturation values. These properties were very important for some potential biomedical applications, such as magnetic separation and magnetic-targeted substrate delivery.
authors.forename: Yunfeng
authors.initials: Y
authors.lastname: Yi
authors.forename: Ying
authors.initials: Y
authors.lastname: Zhang
authors.forename: Yixiao
authors.initials: Y
authors.lastname: Wang
authors.forename: Lihua
authors.initials: L
authors.lastname: Shen
authors.forename: Mengmeng
authors.initials: M
authors.lastname: Jia
authors.forename: Yu
authors.initials: Y
authors.lastname: Huang
authors.affiliation: Research Center of Biomedical Engineering, Department of Biomaterials, College of Materials, Xiamen University, Xiamen 361005, China. houzhenqing@xmu.edu.cn.
authors.forename: Zhenqing
authors.initials: Z
authors.lastname: Hou
authors.forename: Guohong
authors.initials: G
authors.lastname: Zhuang