• Obrien, Paul
• Skabara, Peter J.
• Pickett, Nigel
• Liu, Eric Chun Yeung
• Sutherland, Andrew J.
• Ryley, Stephen
• Li, Yang
• Cummins, Siobhan S.

Abstract

<p>Polystyrene microbeads doped with highly luminescent CdS quantum dots (QDs) have been prepared. Polystyrene particles with diameters ranging from 100 nm to 500 urn were prepared by a suspension polymerization method and with different loadings of QDs. The resulting organic-inorganic microspheres have been characterized by FTIR, elemental analysis and SEM. Confocal microscopy and photoluminescence studies proved that the CdS nanoparticles were evenly distributed throughout the polystyrene spheres. The QD-containing composites have similar optical properties to isolated CdS QDs. The thermal decomposition of the hybrid materials occurred at higher temperature than for the parent organic materials.</p>

Topics

• nanoparticle
• photoluminescence
• scanning electron microscopy
• composite
• thermal decomposition
• quantum dot
• elemental analysis
• confocal microscopy