期刊
NANO LETTERS
卷 13, 期 12, 页码 5763-5770出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl4000932
关键词
Epitaxial graphene; silicon carbide; pentacosadiynoic acid; ALD; zinc oxide; alumina
类别
资金
- Office of Naval Research [N00014-11-1-0463]
- Air Force Office of Scientific Research [FA95S0-11-1-0275]
- Department of Energy [DE-FG02-09ER16109]
- Northwestern Materials Research Science and Engineering Center (NSF) [DMR-1121262]
- Argonne National Laboratory (ANL)
- U.S. Department of Energy Office of Science Laboratory [DE-ACO2-06CH11357]
- IBM Ph.D. Fellowship
- W. M. Keck Foundation Science and Engineering Grant
- NSF-NSEC
- NSF-MRSEC
- Keck Foundation
- State of Illinois
- ANL
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1121262] Funding Source: National Science Foundation
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.
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