Facile Synthesis of Monodisperse Gold Nanocrystals …
In this study, we introduce the unique chemical phenomenon of highly shortened SWNTs that allows crafting monodisperse nanocrystals with well-defined size and shape. The simple reaction scheme involves CNTs and metal salts in water at ambient conditions with a step-wise change of metal ion concentration. The fundamental chemistry of our approach is same as that in our recent report (i.e., direct redox reaction between metal ions and nanotubes). Nonetheless, the current approach distinguishes itself by further tempering CNTs’ size and their dispersity in water to synthesize monodisperse single crystalline metal NPs with better control. Also the simplicity allows large-scale production. In this research, the CNTs’ exceptional capability is confirmed using chloroauric acid (HAuCl4) and SWNTs as model compounds. Also we report unique physicochemical features of the synthesized Au nanocrystals.
Facile Synthesis of Monodisperse Gold Nanocrystals Using ..
Synthesis and characterization of nearly monodisperse …
Ionic liquids are considered as organic solvents with high polarity and a pre-organized solvent structure. Crystalline NPs can be synthesized by using ionic liquid at ambient temperature . Warner and coworkers have developed magnetic NPs coated with a group of uniform materials based on organic salts by using ion exchange water-in-oil (w/o) microemulsion approach . These MNPs could potentially be applied in drug delivery, MRI and protein separations.
Journal of Nanoscience and Nanotechnology
Monodisperse gold nanocrystals with unique near-infrared optical properties were synthesized by simple mixing of highly shortened and well disperse single-walled carbon nanotubes and chloroauric acid in water at ambient conditions with a step-wise increase of gold ion concentration.