2024-03-29T11:07:04Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1578872019-01-04T08:41:55Zcom_10261_2855com_10261_4col_10261_2857
2017-11-30T10:20:38Z
urn:hdl:10261/157887
Magnetic filament brushes: tuning the properties of a magnetoresponsive supracolloidal coating
Sánchez, Pedro A.
Pyanzina, Elena S.
Novak, Ekaterina V.
Cerdà, Joan J.
Sintes, Tomàs
Kantorovich, Sofia
Austrian Science Fund
Ural Federal University
Russian Foundation for Basic Research
Ministry of Education and Science of the Russian Federation
European Commission
Govern de les Illes Balears
This article is part of the themed collection: Nanoparticle Assembly: From Fundamentals to Applications
We present a theoretical study on the design of a supramolecular magnetoresponsive coating. The coating is formed by a relatively dense array of supracolloidal magnetic filaments grafted to a surface in a polymer brush-like arrangement. In order to determine and optimise the properties of the magnetic filament brush, we perform extensive computer simulations with a coarse-grained model that takes into account the correlations between the magnetic moments of the particles and the backbone crosslinks. We show that the self-assembly of magnetic beads from neighbouring filaments defines the equilibrium structural properties of the complete brush. In order to control this self-assembly, we highlight two external stimuli that can lead to significant effects: temperature of the system and an externally applied magnetic field. Our study reveals self-assembly scenarios inherently driven by the crosslinking and grafting constraints. Finally, we explain the mechanisms of structural changeovers in the magnetic filament brushes and confirm the possibility of controlling them by changing the temperature or the intensity of an external magnetic field.
2017-11-30T10:20:38Z
2017-11-30T10:20:38Z
2016
artículo
Faraday Discussions 186: 241-263 (2016)
1359-6640
http://hdl.handle.net/10261/157887
10.1039/c5fd00133a
1364-5498
http://dx.doi.org/10.13039/501100000780
http://dx.doi.org/10.13039/501100003443
http://dx.doi.org/10.13039/501100002261
http://dx.doi.org/10.13039/501100002428
eng
http://doi.org/10.1039/c5fd00133a
Sí
info:eu-repo/grantAgreement/EC/H2020/642774
closedAccess
Royal Society of Chemistry (UK)