|United States Of America||Issued Patent||9,937,556||04/10/2018||2012-329|
Nobel material (Gold, Silver, Platinum and Palladium) nanorods have garnered great interest and specifically gold nanorods because of their plasmonic activity. Conventional synthesis methods either rely on solution phase reactions or templating methods. Typical limitations of commonly used templating methods include:
UCR inventors led by Prof. Yadong Yin have developed a patented, robust templating approach to the synthesis of metal nanorods including Gold (Au), Silver (Ag), Platinum (Pt) and Palladium (Pd) in composition with well controlled dimensions and high yield. The success of this method is attributed to the application of silica nanotube templates with tunable dimensions. In addition to the synthesis of well defined templates introducing Au seeds exclusively into the cavities of these templates is another indispensable step.
Picture above shows the general templating approach to the synthesis of metal nanorods.
Picture above shows TEM images of, from left to right, Gold, Silver, Platinum and Palladium prepared by seeded growth in silica nanotubes.
Seed-mediated growth, Shape controlled synthesis, Gold nanorods, Platinum nanorods, Nanoparticles, Nanocrystals