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@INPROCEEDINGS{S:1019322,
author = {Süß, Johanna and Güntner, Kilian and Pourshahidi, Ali
Mohammad and Krause, Hans-Joachim and Kaulen, Corinna},
title = {{H}ighly {C}rystalline {I}ron {O}xide {N}anoparticles for
{N}onlinear {M}agnetic {D}etection {M}ethods {S}ynthesized
by {O}xidative {A}ging},
reportid = {FZJ-2023-05296},
year = {2023},
abstract = {In the field of medical diagnostics and therapy, iron oxide
nanoparticles (IONPs) offer auspicious possibilities. For
utilization of IONPs as tracer material for magnetic
particle imaging (MPI), for hyperthermia treatment or for
nonlinear magnetic detection, particle sizes between 15-30
nm and a high crystallinity are required. In this context,
we present oxidative aging as synthesis method to achieve
crystalline magnetite nanoparticles with a narrow size
distribution and a biocompatible coating. The synthesis by
oxidative aging comprises precipitation of ferrous hydroxide
and subsequent oxidation by KNO3 to octahedral magnetite
crystals. The dependence of IONP size on the iron precursor
concentration was investigated. With increasing iron
concentration, increasing size was observed. The synthesized
IONPs were coated with different biocompatible ligands such
as dextran or dopamine to stabilize them in aqueous
solution. The synthesized IONPs were characterized by
dynamic light scattering, infrared spectroscopy, frequency
mixing magnetic detection (FMMD), and scanning electron
microscopy (SEM). Highly crystalline magnetite nanoparticles
with sizes suitable for nonlinear magnetic detection methods
like MPI or FMMD were synthesized by oxidative aging. The
NPs are equipped with a biocompatible coating which is an
excellent prerequisite for biomedical applications.},
month = {Aug},
date = {2023-08-27},
organization = {4th European BioSensor Symposium 2023,
Aachen (Germany), 27 Aug 2023 - 30 Aug
2023},
subtyp = {Other},
cin = {IBI-3},
cid = {I:(DE-Juel1)IBI-3-20200312},
pnm = {5241 - Molecular Information Processing in Cellular Systems
(POF4-524) / DFG project 445454801 - Kombinierter
Feldeffekt-/Magnet-Immunsensor-Chip für den
markierungsfreien Nachweise von Biomarkern (FEMIC)
(445454801)},
pid = {G:(DE-HGF)POF4-5241 / G:(GEPRIS)445454801},
typ = {PUB:(DE-HGF)24},
url = {https://juser.fz-juelich.de/record/1019322},
}