Synthesis of Imporved Monodispersion of Copper Cysteamine via Thermoylsis

A new efficient and facile one-pot synthesis route to produce highly mono-disperse oleylamine and oleic acid capped Copper Cysteamine (Cu-Cy) nanoparticles is achieved by controlling the precursor mass and oleylamine (OAm) to oleic acid (Oa) volumes. The improved mono-dispersion seen gives a consistent nanoparticle diameter at roughly 20 (+/- 3) nm with 30 \% yield. Higher near-infrared absorption was measured in some samples when compared to the hydrothermal synthesis. The relative quantum yield when compared to Rhodamine B 6G was 0.24. The oleylamine and oleic acid ratios also had an effect in the peak luminescence under 365 nm excitation with 16 to 4 ml giving best peak luminescence and Cu-Cy yield.