One-dimensional and three-dimensional long-range orientated superstructures of PbSe nanocrystals

We report the 1D linear, 2D square, 2D honeycomb, and 3D topo-epitaxy long-range superstructures of oriented attached PbSe NCs. In particular, we discovered novel 1D linear and 3D superstructures, which implied different formation mechanisms compared with the PbSe superstructures previously reported. Our study not only demonstrates stronger design capability for oriented-attached PbSe superstructures, but also reveals important information about the interfacial behavior of the PbSe NCs during the self-assembly. Novel one-dimensional linear and 3-dimensional topo-epitaxy superstructures were prepared from PbSe nanocrystals dispersed in toluene by oriented attachment-assisted self-assembly at the ethylene glycol/Ar.

Automated summary

Novel one-dimensional linear and three-dimensional topo-epitaxy superstructures were prepared from PbSe nanocrystals dispersed in toluene by oriented attachment-assisted self-assembly under ethylene glycol/Ar. These superstructures exhibited different formation mechanisms compared to previously reported PbSe superstructures, demonstrating stronger design capability and providing insights into the interfacial behavior of PbSe nanocrystals during self-assembly.