Please use this identifier to cite or link to this item: http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/5176
Title: Templating Sub-10 nm Atomic Layer Deposited Oxide Nanostructures on Graphene via One-Dimensional Organic Self-Assembled Monolayers
Authors: Alaboson, Justice M. P.
DESHPANDE, APARNA et al.
Dept. of Physics
Keywords: Epitaxial grapheme
Silicon carbide
Pentacosadiynoic acid
ALD|Zinc oxide
Alumina
2013
Issue Date: Mar-2013
Publisher: American Chemical Society
Citation: Nano Letters, 13(12), 5763-5770.
Abstract: Molecular-scale control over the integration of disparate materials on graphene is a critical step in the development of graphene-based electronics and sensors. Here, we report that self-assembled monolayers of 10,12-pentacosadiynoic acid (PCDA) on epitaxial graphene can be used to template the reaction and directed growth of atomic layer deposited (ALD) oxide nanostructures with sub-10 nm lateral resolution. PCDA spontaneously assembles into well-ordered domains consisting of one-dimensional molecular chains that coat the entire graphene surface in a manner consistent with the symmetry of the underlying graphene lattice. Subsequently, zinc oxide and alumina ALD precursors are shown to preferentially react with the functional moieties of PCDA, resulting in templated oxide nanostructures. The retention of the original one-dimensional molecular ordering following ALD is dependent on the chemical reaction pathway and the stability of the monolayer, which can be enhanced via ultraviolet-induced molecular cross-linking.
URI: http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/5176
https://doi.org/10.1021/nl4000932
ISSN: 1530-6984
1530-6992
Appears in Collections:JOURNAL ARTICLES

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