Yuan-Chih Chu, Cheng-Chien Wang, Yao-Hui Huang and Chuh-Yung Chen.  "Preparation and characterization of luminescent CdS nanoparticles immobilized on poly(St-co-GMA-IDA) polymer microspheres." Nanotechnology 16 (4), 376, (2005).
 

Luminescent CdS (Cadmium Sulfide) nanoparticles immobilized on copolymer microspheres were produced by the chemical precipitation of poly(St-co-GMA-IDA)–Cd2+ (PSG–Cd2+) complexes. PSG latex with GMA-IDA has chelating groups within the copolymer latex with coordination sites for chelating metal ions, at which CdS particles were grown. Using ethanol as a cosolvent improved both the particle monodispersity and the surface charge. The size distribution, morphology and structure of CdS nanoparticles were measured by transmission electron microscope (TEM) and x-ray diffraction (XRD) analysis. The growth kinetics of CdS nanoparticles were studied by TEM and obtaining photoluminescence (PL) spectra. The size and morphology of CdS particles were influenced by the amount of the chelating, iminodiacetic acid group on the surface of the copolymer microsphere, the concentration of Cd2+ ions and the pH. The shown PSG-A3–CdS sample which was formed from ultrafine CdS particles with mean diameters below 5 nm immobilized on the surface of copolymer microspheres, emitted photons with a higher energy than other samples in this investigation.

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