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Controlled Growth of Nanoparticle Clusters through Competitive Stabilizer Desorption
Author(s) -
Stolarczyk Jacek K.,
Ghosh Swapankumar,
Brougham Dermot F.
Publication year - 2008
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.200803895
Subject(s) - stabilizer (aeronautics) , superparamagnetism , nanoparticle , dispersity , cluster (spacecraft) , chemical engineering , materials science , pulmonary surfactant , nucleation , nanotechnology , desorption , chemistry , adsorption , polymer chemistry , organic chemistry , magnetization , mechanical engineering , physics , quantum mechanics , magnetic field , computer science , engineering , programming language
Size‐controlled clusters : Clusters of preformed 15 nm oleic acid coated superparamagnetic iron oxide nanoparticles were prepared through partially destabilizing suspensions of the dispersed nanoparticles with CN‐modified silica. This effect induced gradual formation of monodisperse, superparamagnetic clusters by competition between the solid phases for the surfactant. The cluster size can be controlled within the range 15–200 nm as the growth process can be stopped and restarted.