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dc.contributor.authorLiu, Jian
dc.contributor.authorJian, Nan
dc.contributor.authorOrnelas, Isabel
dc.contributor.authorPattison, Alexander J.
dc.contributor.authorLahtinen, Tanja
dc.contributor.authorSalorinne, Kirsi
dc.contributor.authorHäkkinen, Hannu
dc.contributor.authorPalmer, Richard E.
dc.date.accessioned2017-05-17T10:23:08Z
dc.date.available2018-11-22T22:35:23Z
dc.date.issued2017
dc.identifier.citationLiu, J., Jian, N., Ornelas, I., Pattison, A. J., Lahtinen, T., Salorinne, K., . . . , & Palmer, R. E. (2017). Exploring the Atomic Structure of 1.8 nm Monolayer-Protected Gold Clusters with Aberration-Corrected STEM. <em>Ultramicroscopy</em>, 176, 146-150. <a href="https://doi.org/10.1016/j.ultramic.2016.11.021">doi:10.1016/j.ultramic.2016.11.021</a>
dc.identifier.otherTUTKAID_71857
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/53984
dc.description.abstractMonolayer-protected (MP) Au clusters present attractive quantum systems with a range of potential applications e.g. in catalysis. Knowledge of the atomic structure is needed to obtain a full understanding of their intriguing physical and chemical properties. Here we employed aberration-corrected scanning transmission electron microscopy (ac-STEM), combined with multislice simulations, to make a round-robin investigation of the atomic structure of chemically synthesised clusters with nominal composition Au144(SCH2CH2Ph)60 provided by two different research groups. The MP Au clusters were “weighed” by the atom counting method, based on their integrated intensities in the high angle annular dark field (HAADF) regime and calibrated exponent of the Z dependence. For atomic structure analysis, we compared experimental images of hundreds of clusters, with atomic resolution, against a variety of structural models. Across the size range 123–151 atoms, only 3% of clusters matched the theoretically predicted Au144(SR)60 structure, while a large proportion of the clusters were amorphous (i.e. did not match any model structure). However, a distinct ring-dot feature, characteristic of local icosahedral symmetry, was observed in about 20% of the clusters.
dc.language.isoeng
dc.publisherElsevier BV
dc.relation.ispartofseriesUltramicroscopy
dc.subject.othermonolayer-Protected Gold Clusters
dc.subject.otheraberration-Corrected STEM
dc.subject.otherAu144(SR)60
dc.subject.otheratom counting method
dc.subject.otheratomic structure
dc.titleExploring the Atomic Structure of 1.8 nm Monolayer-Protected Gold Clusters with Aberration-Corrected STEM
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201705032156
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosKemian laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.contributor.laitosDepartment of Chemistryen
dc.contributor.oppiaineFysikaalinen kemia
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2017-05-03T06:15:05Z
dc.type.coarjournal article
dc.description.reviewstatuspeerReviewed
dc.format.pagerange146-150
dc.relation.issn0304-3991
dc.relation.volume176
dc.type.versionacceptedVersion
dc.rights.copyright© 2016 Elsevier B.V. This is a final draft version of an article whose final and definitive form has been published by Elsevier. Published in this repository with the kind permission of the publisher.
dc.rights.accesslevelopenAccessfi
dc.relation.doi10.1016/j.ultramic.2016.11.021


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