THE EFFECTS OF METHYLENE-BLUE ON THE OPTICAL-PROPERTIES OF NANOMETER-SIZED CDS ORGANOSOL

The inverse micelle system of nanometer-sized CdS doped with Methylene Blue (MB) was synthesized and characterized by using absorption and f luorescence spectra. The results show that MB molecules were absorbed onto the surface of CdS nanoparticles and interacted with surfactants when its concentration was lower than 4X10(-6) mol/L. From the compari son of their spectra, MB molecules by adsorption have a strong quenche d fluorescence emission of CdS nanoparticles with surface defect state s. All responses and main mechanism are ascribed to tile charge transf er between the CdS organosol and Methylene Blue molecules.