Structural changes in the shell of plasmonic core-shell microgels upon in-situ overgrowth of the gold cores
We want to study the form factor of core-shell microgels before and after the wet-chemical overgrowth of the gold nanoparticle cores. Apart from other core-shell microgel systems known from literature, those ones containing single gold nanoparticle cores allow for the overgrowth of the core by a seeded growth protocol. This way the core can be increased in volume by almost 300 times. While following this growth is possible by rather standard analytical tools such as electron microscopy and SAXS, measuring and understanding the corresponding structural changes in the microgel shell has not bee done yet and will rely on small-angle neutron scattering. We propose to use gold-PNIPAM core-shell microgels with two differently cross-linked shells and for each of these two different sizes of the cores, i.e. the initial core size after the first synthesis and overgrown cores obtained after in-situ overgrowth. The scattering contrast will be varied by mixing D2O and H2O in order to perform measurements under full contrast as well as core matching conditions. The experimental results will also be used to complement the results from the proposed neutron reflectometry experiment (#88254).
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The recommended format for citing this dataset in a research publication is in the following format:
KARG Matthias; FELLER Deborah and PREVOST Sylvain. (2023). Structural changes in the shell of plasmonic core-shell microgels upon in-situ overgrowth of the gold cores. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-11-2100
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This data is not yet public
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