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@ARTICLE{Mascotto:92585,
author = {Mascotto, S. and Wallacher, D. and Kuschel, A. and Polarz,
S. and Zickler, G. A. and Timmann, A. and Smarsly, B. M. and
DESY},
title = {{A}dsorption in periodically ordered mesoporous
organosilica materials studied by in-situ small-angle
{X}-ray scattering and small-angle neutron scattering},
journal = {Langmuir},
volume = {26},
issn = {0743-7463},
address = {Washington, DC},
publisher = {ACS Publ.},
reportid = {PHPPUBDB-13027},
pages = {6583-6592},
year = {2010},
abstract = {Modified periodically ordered mesoporous organosilica
materials were prepared starting from a recently introduced
type of sol-gel precursor, containing both organic moieties
and hydrolyzable Si-OR groups. In order to thoroughly
characterize the mesoporosity and its accessibility,
different probe gases were used in conventional gas
adsorption experiments. Furthermore, in situ small-angle
X-ray scattering (SAXS) and small-angle neutron scattering
(SANS) were applied to study the mesoporosity and the
sorption processes, taking advantage of scattering contrast
matching conditions. Thereby, the materials were
characterized not only by different probe molecules but also
at different temperatures (nitrogen at 77 K, dibromomethane
at 290 K and perfluoropentane at 276 K). The comparison
between the standard and in situ SAXS/SANS adsorption
experiments revealed valuable information about the porosity
and microstructure of the materials. It is demonstrated that
the organic moieties are homogeneously distributed; that is,
they do not phase-separate from silica on the nanometer
scale.},
cin = {HASYLAB},
ddc = {670},
cid = {$I:(DE-H253)HASYLAB_-2012_-20130307$},
pnm = {DORIS Beamline BW4 (POF2-54G13) / FS-Proposal: II-20070030
EC (II-20070030-EC)},
pid = {G:(DE-H253)POF2-BW4-20130405 / G:(DE-H253)II-20070030-EC},
experiment = {EXP:(DE-H253)D-BW4-20150101},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:20201568},
UT = {WOS:000276969700076},
doi = {10.1021/la903934r},
url = {https://bib-pubdb1.desy.de/record/92585},
}