Large-Scale Organizations of MoO3 Nanoplatelets with Single-Crystalline MoO3(4,4‘-bipyridyl)0.5

We report a novel assembly approach for fabrication of molybdenum trioxide nanoplatelets with precise controls of stack architecture and crystallographic phase (either β-MoO 3 or α-MoO 3, or their mixture) at 300−450 °C. The self-assembly of these metal oxides occurs within a predefined space of original hybrid single-crystals (i.e., the assemblies have a dimension as large as 50−250 μm), and an overall oxide assembly is strictly integrated throughout the original crystal space provided. In this sense, each single-crystal of the hybrid precursor can be viewed as a microscopic “green compact” analogous to the macroscopic one in ceramic processing.