Lattice-matched carbon dots induced the oriented self-assembly of Cu nanoparticles. (July 2017)

• Record Type: Journal Article
• Authors: Cao, Piao-Yang; Liu, Yong-Lin; Lin, Zuan-Tao; Huang, Jian-Fei; Chen, Wen-Zhao; Liang, Jun-Hua; Zhou, Wuyi; Jiang, Gang-Biao
• Is Part Of: Carbon. Volume 118(2017)
• Page Start: 625
• Page End: 633
• Publication Date: 2017-07
• Subjects: Carbon -- Periodicals; Carbone -- Périodiques; Koolstof; Toepassingen; Electronic journals; 546.681
• DOI: 10.1016/j.carbon.2017.03.090
• Languages: English
• ISSNs: 0008-6223

Abstract

Abstract: 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. Graphical abstract: 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.