title: Nanocomposites of Highly Monodisperse Encapsulated Superparamagnetic Iron Oxide Nanocrystals Homogeneously Dispersed in a Poly(ethylene Oxide) Melt.
abstract: Nanocomposite materials based on highly stable encapsulated superparamagnetic iron oxide nanocrystals (SPIONs) were synthesized and characterized by scattering methods and transmission electron microscopy (TEM). The combination of advanced synthesis and encapsulation techniques using different diblock copolymers and the thiol-ene click reaction for cross-linking the polymeric shell results in uniform hybrid SPIONs homogeneously dispersed in a poly(ethylene oxide) matrix. Small-angle X-ray scattering and TEM investigations demonstrate the presence of mostly single particles and a negligible amount of dyads. Consequently, an efficient control over the encapsulation and synthetic conditions is of paramount importance to minimize the fraction of agglomerates and to obtain uniform hybrid nanomaterials.
authors.affiliation: Institute of Physical Chemistry, University of Hamburg , Grindelallee 117, 20146 Hamburg, Germany.
authors.forename: Artur
authors.identifier: 0000-0001-9745-3185
authors.initials: A
authors.lastname: Feld
authors.affiliation: Institute of Physical Chemistry, University of Hamburg , Grindelallee 117, 20146 Hamburg, Germany.
authors.forename: Rieke
authors.initials: R
authors.lastname: Koll
authors.affiliation: JCNS-1 and ICS-1, Forschungszentrum Jülich GmbH , Leo-Brandt-Straße, 52425 Jülich, Germany.
authors.forename: Lisa Sarah
authors.initials: LS
authors.lastname: Fruhner
authors.affiliation: JCNS-1 and ICS-1, Forschungszentrum Jülich GmbH , Leo-Brandt-Straße, 52425 Jülich, Germany.
authors.forename: Margarita
authors.initials: M
authors.lastname: Krutyeva
authors.affiliation: JCNS-1 and ICS-1, Forschungszentrum Jülich GmbH , Leo-Brandt-Straße, 52425 Jülich, Germany.
authors.forename: Wim
authors.initials: W
authors.lastname: Pyckhout-Hintzen
authors.affiliation: JCNS-1 and ICS-1, Forschungszentrum Jülich GmbH , Leo-Brandt-Straße, 52425 Jülich, Germany.
authors.forename: Christine
authors.initials: C
authors.lastname: Weiß
authors.affiliation: Institute of Physical Chemistry, University of Hamburg , Grindelallee 117, 20146 Hamburg, Germany.
authors.forename: Hauke
authors.initials: H
authors.lastname: Heller
authors.affiliation: Institute of Physical Chemistry, University of Hamburg , Grindelallee 117, 20146 Hamburg, Germany.
authors.forename: Agnes
authors.initials: A
authors.lastname: Weimer
authors.affiliation: Institute of Physical Chemistry, University of Hamburg , Grindelallee 117, 20146 Hamburg, Germany.
authors.forename: Christian
authors.initials: C
authors.lastname: Schmidtke
authors.affiliation: Jülich Centre for Neutron Science (JCNS) at MLZ, Forschungszentrum Jülich GmbH , 52425 Garching, Germany.
authors.forename: Marie-Sousai
authors.initials: MS
authors.lastname: Appavou
authors.affiliation: Jülich Centre for Neutron Science JCNS and Peter Grünberg Institut PGI, JARA-FIT, Forschungszentrum Jülich GmbH , D-52425 Jülich, Germany.
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Kentzinger
authors.affiliation: JCNS-1 and ICS-1, Forschungszentrum Jülich GmbH , Leo-Brandt-Straße, 52425 Jülich, Germany.
authors.forename: Jürgen
authors.identifier: 0000-0002-9276-597X
authors.initials: J
authors.lastname: Allgaier
authors.affiliation: Institute of Physical Chemistry, University of Hamburg , Grindelallee 117, 20146 Hamburg, Germany.|The Hamburg Center for Ultrafast Imaging, University of Hamburg , Luruper Chaussee 149, 22761 Hamburg, Germany.|Center for Applied Nanotechnology (CAN) GmbH , Grindelallee 117, 20146 Hamburg, Germany.|Department of Chemistry, Faculty of Science, King Abdulaziz University , P.O. Box 80203, Jeddah 21589, Saudi Arabia.
authors.forename: Horst
authors.identifier: 0000-0003-2967-6955
authors.initials: H
authors.lastname: Weller
keywords: cross-linking; diblock copolymer; encapsulation; hybrid materials; iron oxide nanocrystals; nanocomposite; thiol−ene click reaction