Mahdi naserimoghadam - Department of Chemical Engineering Shahrood branch, Islamic Azad University Shahrood,Iran
Meysam Namvar - Department of Chemical Engineering Shahrood branch, Islamic Azad University Shahrood,Iran
Meysam Rafiyan - Department of Chemical Engineering Shahrood branch, Islamic Azad University Shahrood,Iran
Mojtaba Hossini Khan bebin - Department of Chemical Engineering Shahrood branch, Islamic Azad University Shahrood,Iran

The effect of additives on the fluorescence spectra of semiconductor nanoparticles was studied using CdSe/ZnS,particles of various sizes and composition. Based on the fluorescence quenching of quantum dots caused by material a simple, sensitive and rapid method was developed. In the end satisfactory results were obtained. The different synthesis methods was also discussed

synthesis, Quantum Dot, Nanoparticles CdSe ، ZnS