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Superparamagnetic Magnetite Colloidal Nanocrystal Clusters
Author(s) -
Ge Jianping,
Hu Yongxing,
Biasini Maurizio,
Beyermann Ward P.,
Yin Yadong
Publication year - 2007
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200700197
Subject(s) - superparamagnetism , nanocrystal , magnetite , dispersity , colloid , nanotechnology , materials science , nonionic surfactant , pulmonary surfactant , magnetization , chemical engineering , physics , engineering , magnetic field , polymer chemistry , metallurgy , quantum mechanics
High‐temperature hydrolysis of FeCl 3 in the presence of a surfactant gives monodisperse superparamagnetic colloidal nanocrystal clusters (CNCs) of magnetite with tunable sizes (30–180 nm; see scheme). The combination of superparamagnetism, high magnetization, and high water dispersibility makes these CNCs ideal candidates for applications such as drug delivery and bioseparation.