Lattice-matched carbon dots induced the oriented self-assembly of Cu nanoparticles

Orientation-induced crystallization is a widely applied method of forming crystal with highly oriented structure. Here, we reported a promising matrix for orientation-induced crystallization–carbon dots (CDs), who exhibited high lattice-matching with Cu crystal. First, CDs induce self-assembly of Cu...

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Bibliographic Details
Published in:Carbon (New York) 2017-07, Vol.118, p.625-633
Main Authors: Cao, Piao-Yang, Liu, Yong-Lin, Lin, Zuan-Tao, Huang, Jian-Fei, Chen, Wen-Zhao, Liang, Jun-Hua, Zhou, Wuyi, Jiang, Gang-Biao
Format: Article
Language:English
Subjects:
Assemblies
Carbon dots
Crystal lattices
Crystal structure
Crystallization
Electron transfer
Forming
Lattice matching
Mathematical morphology
Nanoparticles
Oxidation
Protective coatings
Raman spectra
Scattering
Self-assembly
Surface stability
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Summary:Orientation-induced crystallization is a widely applied method of forming crystal with highly oriented structure. Here, we reported a promising matrix for orientation-induced crystallization–carbon dots (CDs), who exhibited high lattice-matching with Cu crystal. First, CDs induce self-assembly of Cu nanoparticles through organics-inorganics interface interaction, forming self-assembled mesocrystal and single crystal with large size. Second, the CDs selectively deposit on Cu {111} plane via lattice-matching, endowing Cu self-assemblies with tunable morphology including sphere, truncated octahedron, octahedron, concave octahedron and hexpods. Third, CDs also protect Cu self-assemblies from oxidation and act as efficient interface for optical conversion and electron transfer. So using as surface-enhanced Raman scattering (SERS) substrate for the first time, the CDs-coating hexpods Cu mesocrystal require no post processing and exhibit high stability and surface-enhanced Raman scattering (SERS) activity which ordinary Cu nanostructure cannot achieve. CDs induce self-assembly of Cu nanoparticles through organics-inorganics interface interaction, forming self-assembled mesocrystal and single crystal with large size. CDs selectively deposit on Cu {111} plane via lattice-matching and epitaxial growth, endowing Cu self-assemblies with tunable morphology including sphere, truncated octahedron, octahedron, concave octahedron and hexpods. [Display omitted]
ISSN:0008-6223
1873-3891
DOI:10.1016/j.carbon.2017.03.090