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@ARTICLE{Gontard:189434,
author = {Gontard, Lionel C. and Fernández, Asunción and
Dunin-Borkowski, Rafal and Kasama, Takeshi and
Lozano-Pérez, Sergio and Lucas, Stéphane},
title = {{T}ransmission electron microscopy of unstained hybrid {A}u
nanoparticles capped with {PPAA} (plasma-poly-allylamine):
{S}tructure and electron irradiation effects},
journal = {Micron},
volume = {67},
issn = {0968-4328},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2015-02601},
pages = {1 - 9},
year = {2014},
abstract = {Hybrid (organic shell–inorganic core) nanoparticles have
important applications in nanomedicine. Although the
inorganic components of hybrid nanoparticles can be
characterized readily using conventional transmission
electron microscopy (TEM) techniques, the structural and
chemical arrangement of the organic molecular components
remains largely unknown. Here, we apply TEM to the
physico-chemical characterization of Au nanoparticles that
are coated with plasma-polymerized-allylamine, an organic
compound with the formula C3H5NH2. We discuss the use of
energy-filtered TEM in the low-energy-loss range as a
contrast enhancement mechanism for imaging the organic
shells of such particles. We also study
electron-beam-induced crystallization and amorphization of
the shells and the formation of graphitic-like layers that
contain both C and N. The resistance of the samples to
irradiation by high-energy electrons, which is relevant for
optical tuning and for understanding the degree to which
such hybrid nanostructures are stable in the presence of
biomedical radiation, is also discussed.},
cin = {PGI-5},
ddc = {570},
cid = {I:(DE-Juel1)PGI-5-20110106},
pnm = {42G - Peter Grünberg-Centre (PG-C) (POF2-42G41)},
pid = {G:(DE-HGF)POF2-42G41},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000343641300001},
pubmed = {pmid:24997304},
doi = {10.1016/j.micron.2014.06.004},
url = {https://juser.fz-juelich.de/record/189434},
}