RT Journal Article
T1 Monodisperse magnetic nanoparticle assemblies prepared at scale by competitive stabiliser desorption
A1 Ninjbadgar, T.
A1 Fox, Eoin K.
A1 Hierrezuelo-Osorio, José Manuel
A1 El Haddassi, Fadwa
A1 Brougham, Dermot F.
K1 Nanopartículas
AB We report a scalable and reproducible method to assemble magnetic nanoparticle clusters from oleic acid stabilised iron oxide nanoparticles. By controlling the surface coverage of oleic acid on the nanoparticle surface we have achieved controlled nanoparticle assembly following exposure of the suspension to a substrate layer of cyanopropyl-modified silica which competes for the ligand. The clusters can be formed reproducibly and their final size can be selected over a range covering almost two orders of magnitude. Most unusually, the relative monodispersity of the cluster suspension is improved compared to the startingnanoparticle suspension, and the yield is close to 100%. Interestingly, we find that the kinetics of assembly is not altered by scaling up, which is surprising for a complex process involving molecular transport. Kinetic studies provided mechanistic insight into the process, and suggested general requirements for controlled assembly of other nanoparticle types.
PB RSC Publishing
YR 2015
FD 2015
LK https://hdl.handle.net/10630/33828
UL https://hdl.handle.net/10630/33828
LA eng
NO Tsedev Ninjbadgar; Eoin K. Fox; Jose Hierrezuelo; Fadwa El Haddassi; Dermot F. Brougham. Monodisperse magnetic nanoparticle assemblies prepared at scale by competitive stabiliser desorption. Journal of Materials Chemistry B (2015), 3, pp. 8638 - 8643
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 23 ene 2026