Evolution of CdTe Nanoparticles Into Twisted-Nanoribbons by Light-Control.

Cadmium telluride (CdTe) nanowires were successfully synthesized from individual nanoparticles and the evolutionary process was investigated. Slow oxidation of Te(2-) in CdTe nanoparticles resulted in the generation of ribbons consisting of several layers of individual nanocrystals. The length of nanowires ranged from 1 to 8 μm. The presence of unusual shapes of multiparticle assemblies, such as bouquet, dog-bone, and ribbon bunches was observed as intermediate stages. The images of nanoribbons were analysed based on transmission electron microscopy and scanning electron microscopy. The suggested synthetic procedure provides a viable pathway for the fabrication of nanomaterials with helical conformations.