期刊
ACS NANO
卷 5, 期 10, 页码 8322-8330出版社
AMER CHEMICAL SOC
DOI: 10.1021/nn203049t
关键词
nanocrystals; nanoplates; superlattices; SAXS; liquid crystalline; self-assembly
类别
资金
- Office of Naval Research
- MURI [W911NF-08-1-0364]
- National Science Foundation [DMR-0520020]
- Nano/Bio Interface Center at the University of Pennsylvania [DMR08-32802]
- Department of Energy's Advanced Research Projects Agency, Energy (ARPA-E) [DE-AR0000123]
- Richard Perry University
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1120901] Funding Source: National Science Foundation
Directed self-assembly of colloidal nanocrystals Into ordered superlattices enables the preparation of novel metamaterials with diverse functionalities. Structural control and precise characterization of these superlattices allow the interactions between individual nanocrystal building blocks and the origin of their collective properties to be understood. Here, we report the directed liquid interfacial assembly of gadolinium trifluoride (GdF3) nanoplates into liquid crystalline assemblies displaying long-range orientational and positional order. The macroscopic orientation of superlattices is controlled by changing the subphases upon which liquid interfacial assembly occurs. The assembled structures are characterized by a combination of transmission electron microscopy (TEM) and small-angle X-ray scattering (SAXS) measurements performed on a laboratory diffractometer. By doping GdF3 nanoplates with europium (Eu3+), luminescent phosphorescent superlattices with controlled structure are produced and enable detailed structural and optical characterization.
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