Painuly, DBhatt, AKrishnan, VK2017-03-102017-03-1020131536 ,;63-6410.1063/1.4810101https://dspace.sctimst.ac.in/handle/123456789/9321Present study aims to modify the thioacid capped CdSe Quantum-dots (Q-dots) surface by ZnS coating by direct synthesis in aqueous medium. CS formation was confirmed by red shift as well as enhancement in the luminescence peak compared to bare Q-dots. Effects of processing parameters during the shell preparation such as core concentration and sulphur concentration on the luminescence properties of CS have been studied. Processing parameters have been optimized at maximum luminescence efficiency. Cytocompatibility behavior was found to be better for CS compared to their bare Q-dots counterpart after evaluation. Cytotoxicity of CS has been further evaluated by changing the sulphur concentration and after aging for 8 days.Materials Science; Physics