RT Journal Article
T1 Multi-responsive hybrid Janus nanoparticles: Surface functionalization through solvent physisorption
A1 Méndez González, Diego
A1 Alonso-Cristobal, Paulino
A1 López Cabarcos, Enrique
A1 Rubio Retama, Benito Jorge
AB In this work, we present a simple methodology to produce multi-responsive Janus nanoparticles using a Pickering emulsion-based approach. In order to use these nanoparticles (NPs) as emulsion stabilizers, tetrahydrofuran was physisorbed on the surface of freshly synthesized Fe3O4@SiO2 NPs, which reduced their inherent hydrophilic character and permitted to create a close packed arrangement of particles at the emulsion interface. This situation allowed selective functionalization of the surface of the nanoparticles exposed to the water phase with a vinyl derivate molecule, which permitted to initiate the sequential polymerization of pNIPAM and poly(vinylimidazole). Thus, we obtained Janus nanoparticles that responded to changes in the temperature and the pH of the media as well as to external magnetic fields. The presented method does not require the surface modification of the original nanoparticles with surfactants or the use of fused silica and provides an easy way to create Janus particles in the nanoscale range.
PB Elsevier
SN 0014-3057
YR 2016
FD 2016
LK https://hdl.handle.net/20.500.14352/101136
UL https://hdl.handle.net/20.500.14352/101136
LA eng
NO Mendez-Gonzalez D, Alonso-Cristobal P, Lopez-Cabarcos E, Rubio-Retama J. Multi-responsive hybrid Janus nanoparticles: Surface functionalization through solvent physisorption. European Polymer Journal 2016;75:363–70. https://doi.org/10.1016/j.eurpolymj.2016.01.013.
NO Ministerio de Educación, Cultura y Deporte (España)
NO MCGL&JAMA Foundation
NO Ministerio de Economía, Comercio y Empresa (España)
DS Docta Complutense
RD 19 sept 2025