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@ARTICLE{Rostek:858612,
author = {Rostek, M. and Breisch, K. and Loza, Kateryna and Garcia,
P. R. A. F. and Oiliveira, C. L. P. and Prymak, O. and
Heggen, Marc and Köller, Maximilian and Sengstock, C. and
Epple, M.},
title = {{W}et-chemical synthesis of {P}d-{A}u core-shell
nanopaticles (8nm): {F}rom nanostructure to biological
properties},
journal = {ChemistrySelect},
volume = {3},
number = {17},
issn = {2365-6549},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {FZJ-2018-07472},
pages = {4994 - 5001},
year = {2018},
abstract = {Pd−Au core‐shell nanoparticles with a palladium core
(diameter about 5.5 nm) and a gold shell (thickness about
1.7 nm) were wet‐chemically synthesized in an easy
water‐based one‐pot synthesis by sequential reduction of
Pd2+ and Au3+ with glucose in the presence of
poly(N‐vinylpyrrolidone) (PVP). The metals are present in
about equal amounts (molar ratio Pd:Au about 2:1) with a
clear separation between core and shell. The reaction was
monitored in‐situ by small‐angle X‐ray scattering
(SAXS), showing the initial growth of the palladium seeds,
followed by the epitactic formation of the gold shell. The
core‐shell character of the particles was confirmed by
high‐resolution scanning transmission electron microscopy
(STEM) and energy‐dispersive X‐ray spectroscopy (EDX).
However, X‐ray powder diffraction with Rietveld analysis
indicated a partial alloying, i. e. a gradual border
between the two metals. Cell culture experiments showed no
adverse effects on human mesenchymal stem cells (hMSCs) with
a Pd−Au nanoparticle concentration (computed as total
metal) up to 50 μg mL−1 after 24 h incubation, i. e.
the particles can be considered as biologically harmless,
even after unintended human exposure.},
cin = {PGI-5},
ddc = {540},
cid = {I:(DE-Juel1)PGI-5-20110106},
pnm = {143 - Controlling Configuration-Based Phenomena (POF3-143)},
pid = {G:(DE-HGF)POF3-143},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000431625900060},
doi = {10.1002/slct.201800638},
url = {https://juser.fz-juelich.de/record/858612},
}