Engineering the Au-Cu O Crystalline Interfaces for Structural and Catalytic Integration.

Precise structural control has attracted tremendous interest in pursuit of the tailoring of physical properties. Here, this work shows that through strong ligand-mediated interfacial energy control, Au-Cu O dumbbell structures where both the Au nanorod (AuNR) and the partially encapsulating Cu O domains are highly crystalline. The synthetic advance allows physical separation of the Au and Cu O domains, in addition to the use of long nanorods with tunable absorption wavelength, and the crystalline Cu O domain with well-defined facets.