| Autor: |
Alaboson JM; Department of Materials Science and Engineering, Northwestern University , 2220 Campus Drive, Evanston, Illinois 60208, United States., Sham CH, Kewalramani S, Emery JD, Johns JE, Deshpande A, Chien T, Bedzyk MJ, Elam JW, Pellin MJ, Hersam MC |
| Jazyk: |
angličtina |
| Zdroj: |
Nano letters [Nano Lett] 2013; Vol. 13 (12), pp. 5763-70. Date of Electronic Publication: 2013 Mar 11. |
| DOI: |
10.1021/nl4000932 |
| Abstrakt: |
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. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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