Template-Free Supracolloidal Self-Assembly of Atomically Precise Gold Nanoclusters : From 2D Colloidal Crystals to Spherical Capsids
Nonappa, Lahtinen, Tanja, Haataja, Johannes S., Tero, Tiia-Riikka, Häkkinen, Hannu, Ikkala, Olli. (2016). Template-Free Supracolloidal Self-Assembly of Atomically Precise Gold Nanoclusters : From 2D Colloidal Crystals to Spherical Capsids. Angewandte Chemie International Edition, 55(52), 16035-16038. https://doi.org/10.1002/anie.201609036
Published inAngewandte Chemie International Edition
© 2016 Wiley-VCH Verlag GmbH &Co. KGaA, Weinheim. This is a final draft version of an article whose final and definitive form has been published by Wiley. Published in this repository with the kind permission of the publisher.
We report supracolloidal self-assembly of atomically precise and strictly monodisperse gold nanoclusters involving p-mercaptobenzoic acid ligands (Au102-pMBA44) under aqueous conditions into hexagonally packed monolayer-thick two-dimensional facetted colloidal crystals (thickness 2.7 nm) and their bending to closed shells leading to spherical capsids (d ca. 200 nm), as controlled by solvent conditions. The 2D colloidal assembly is driven in template-free manner by the spontaneous patchiness of the pMBA ligands around the Au102-pMBA44 nanoclusters preferably towards equatorial plane, thus promoting inter-nanocluster hydrogen bonds and high packing to planar sheets. More generally, the findings encourage to explore atomically precise nanoclusters towards highly controlled colloidal self-assemblies.
PublisherWiley - VCH Verlag GmbH & Co. KGaA
ISSN Search the Publication Forum1433-7851
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