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Heterogeneous local order in self-assembled nanoparticle films revealed by X-ray cross-correlations
We report on the self-assembly of gold nanoparticles coated with a soft poly(ethylene glycol) shell studied by X-ray cross-correlation analysis. Depending on the initial concentration of gold nanoparticles used, structurally heterogeneous films were formed. The films feature hot spots of dominating...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
International Union of Crystallography
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5929381/ https://www.ncbi.nlm.nih.gov/pubmed/29755751 http://dx.doi.org/10.1107/S2052252518005407 |
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author | Lehmkühler, Felix Schulz, Florian Schroer, Martin A. Frenzel, Lara Lange, Holger Grübel, Gerhard |
author_facet | Lehmkühler, Felix Schulz, Florian Schroer, Martin A. Frenzel, Lara Lange, Holger Grübel, Gerhard |
author_sort | Lehmkühler, Felix |
collection | PubMed |
description | We report on the self-assembly of gold nanoparticles coated with a soft poly(ethylene glycol) shell studied by X-ray cross-correlation analysis. Depending on the initial concentration of gold nanoparticles used, structurally heterogeneous films were formed. The films feature hot spots of dominating four- and sixfold local order with patch sizes of a few micrometres, containing 10(4)–10(5) particles. The amplitude of the order parameters suggested that a minimum sample amount was necessary to form well ordered local structures. Furthermore, the increasing variation in order parameters with sample thickness demonstrated a high degree of structural heterogeneity. This wealth of information cannot be obtained by the conventional microscopy techniques that are commonly used to study nanocrystal superstructures, as illustrated by complementary scanning electron microscopy measurements. |
format | Online Article Text |
id | pubmed-5929381 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | International Union of Crystallography |
record_format | MEDLINE/PubMed |
spelling | pubmed-59293812018-05-11 Heterogeneous local order in self-assembled nanoparticle films revealed by X-ray cross-correlations Lehmkühler, Felix Schulz, Florian Schroer, Martin A. Frenzel, Lara Lange, Holger Grübel, Gerhard IUCrJ Research Papers We report on the self-assembly of gold nanoparticles coated with a soft poly(ethylene glycol) shell studied by X-ray cross-correlation analysis. Depending on the initial concentration of gold nanoparticles used, structurally heterogeneous films were formed. The films feature hot spots of dominating four- and sixfold local order with patch sizes of a few micrometres, containing 10(4)–10(5) particles. The amplitude of the order parameters suggested that a minimum sample amount was necessary to form well ordered local structures. Furthermore, the increasing variation in order parameters with sample thickness demonstrated a high degree of structural heterogeneity. This wealth of information cannot be obtained by the conventional microscopy techniques that are commonly used to study nanocrystal superstructures, as illustrated by complementary scanning electron microscopy measurements. International Union of Crystallography 2018-04-28 /pmc/articles/PMC5929381/ /pubmed/29755751 http://dx.doi.org/10.1107/S2052252518005407 Text en © Felix Lehmkühler et al. 2018 http://creativecommons.org/licenses/by/2.0/uk/ This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.http://creativecommons.org/licenses/by/2.0/uk/ |
spellingShingle | Research Papers Lehmkühler, Felix Schulz, Florian Schroer, Martin A. Frenzel, Lara Lange, Holger Grübel, Gerhard Heterogeneous local order in self-assembled nanoparticle films revealed by X-ray cross-correlations |
title | Heterogeneous local order in self-assembled nanoparticle films revealed by X-ray cross-correlations |
title_full | Heterogeneous local order in self-assembled nanoparticle films revealed by X-ray cross-correlations |
title_fullStr | Heterogeneous local order in self-assembled nanoparticle films revealed by X-ray cross-correlations |
title_full_unstemmed | Heterogeneous local order in self-assembled nanoparticle films revealed by X-ray cross-correlations |
title_short | Heterogeneous local order in self-assembled nanoparticle films revealed by X-ray cross-correlations |
title_sort | heterogeneous local order in self-assembled nanoparticle films revealed by x-ray cross-correlations |
topic | Research Papers |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5929381/ https://www.ncbi.nlm.nih.gov/pubmed/29755751 http://dx.doi.org/10.1107/S2052252518005407 |
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