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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 22: Poster Session III - Charged Soft Matter and Theory and Simulation
CPP 22.40: Poster
Mittwoch, 24. März 2021, 16:30–18:30, CPPp
Magnetic nanogels in magnetic field — •Ivan Novikau1, Pedro Sanchez1, and Sofia Kantorovich1,2 — 1University of Vienna — 2Ural Federal University
Nanogels (NGs) with multifunctionalized magnetic nanoparticles (MNPs) have demonstrated the ability to effectively destroy cancer cells in vivo, without causing visible damage to healthy organs [1]. The presence of MNPs inside the NGs also offers an additional mechanism to control their properties by means of applied magnetic fields.
Our study of a suspension of NGs loaded with MNPs in zero-field case showed that the structural properties of a single gel, and the self-assembly in the given system, strongly depend on the strength of the dipole-dipole interaction (dipolar coupling parameter) between the MNPs [2].
Here, we investigate a suspension of magnetic NGs in a constant external magnetic field by means of molecular dynamics computer simulations [3]. Each NG is initially modeled as a system of bead-spring polymer chains randomly cross-linked into a polymer network. MNPs are arbitrary incorporated into this network.
We find that even weak fields lead to drastic changes in the structure factors of both, the embedded MNPs and of whole NGs. But what is even more curious, is that the polymer matrix of nanogels enhances the magnetization of free MNPs.
[1] Qing Wu et al., Nat. Commun., 10 (240), 2019.
[2] Novikau et al., JMMM, 498, 2020.
[3] Novikau et al., J. Mol. Liq., 307, 2020.