Schiff base metal complexes driven quantum dots of ZnSe and CdSe

Abstract

The Schiff base metal complexes of Cd and Zn (popularly known as the salophen complexes) when reacted with cycloocteno-1,2,3-selenadiazole lead to formation of CdSe and ZnSe quantum dots (QDs) via thermal reaction employing octadecenoic acid. Such metal precursors offer versatility in the field of nanomaterials. The QDs were analysed by UV-Visible and Photoluminescence spectroscopy, XRD, TEM and TGA. The method leads to selective formation of cubic quantum dots of less than 3 nm with typical quantum yields of as-prepared samples was estimated to be 15.34% for ZnSe and 7.25% for CdSe.