摘要

Double-layered NiPt nanobowls with diameter of similar to 200 nm and layer thickness of similar to 3 nm have been synthesized through a "one-pot'' route in water at room temperature without premade templates. The nanobowls are self-assembled with asymmetric double layers and exhibit alignment behavior with different orientation on silicon wafer within different dispersant solutions. The as-prepared nanobowls can serve as fluorescence modifiers of Rhodamine 6G (R6G) molecules, attributed to their bowl-like shape with a hollow cavity between layers. It provides a new facile route for synthesis and manipulation of bowl-like nanostructures through a self-assembly method without pre-made templates.