Publication at Nanoscale: Magnetic gold nanotriangles by microwave-assisted polyol synthesis

Siming Yu,a   Jordan A. Hachtel,bc   Matthew F. Chisholm,c  Sokrates T. Pantelides,bc   Anna Laromaine*a and   Anna Roig*a  

Nanoscale, 2015,7, 14039-14046, DOI: 10.1039/C5NR03113C
Received 12 May 2015, Accepted 16 Jul 2015, First published online 21 Jul 2015
Simple approaches to synthesize hybrid nanoparticles with magnetic and plasmonic functionalities, with high control of their shape and avoiding cytotoxic reactants, to target biomedical applications remain a huge challenge. Here, we report a facile, fast and bio-friendly microwave-assisted polyol route for the synthesis of a  complex multi-material consisting of monodisperse gold nanotriangles around 280 nm in size uniformly decorated by superparamagnetic iron oxide nanoparticles of 5 nm. These nanotriangles are readily dispersible in water, display a strong magnetic response (10 wt% magnetic fraction) and exhibit a localized surface plasmon resonance band in the NIR region (800 nm). Moreover, these hybrid particles can be easily self-assembled  at the liquid–airinterfaces.


gold nanotriangles, hot off the press, magnetic, microwave, Nanoscale, polyol synthesis, SPIONs