Synthesis of Cadmium Selenide and Cobalt Nanorods to Improve Understanding of Shape Morphology of Rods

Eric Meyer with Dr. Bob Hamers and Andrew Mangham

UW-Madison Department of Chemistry

This research studies size morphology of cadmium selenide (CdSe) nanocrystals to increase understanding of how to position nanorods into polymers. Cylindrical cadmium selenide (CdSe) nanorods were created through wet synthesis. CdSe nanocrystals began in a spherical shape. Due to the use of Tetradecylphosphonic acid (TDPA) as a surfactant, the crystals were restricted in their growth to one direction, resulting in rod-shaped crystals. By varying the growing temperature between 200°C and 270°C, different ratios of length to width were obtained. Similar results were obtained when Cobalt nanocrystals were synthesized. Cobalt has many metallic properties that CdSe does not possess such as magnetism. Further research into this area can lead to magnetic positioning of nanocrystals in the polymers.