Fluorescence Studies on Thiol‐Functional Polystyrene‐CdS Nanocomposites

Abstract

Thiol‐functional polystyrene‐CdS nanocomposites have been prepared via an in‐situ method. The products were characterized in detail. The photoluminescence properties of products were also studied. The thiol fraction in thiol‐functional polystyrene can be controlled by the copolymerization of styrene and 4‐chloromethylstyrene. So, the CdS content in polymer and the photoluminescence properties of nanocomposites can be tuned up quantificationally. Results show that the fluorescence of nanocomposites depends on the CdS content. The charge‐transfer mechanism of nanocomposites accords with ligand‐to‐metal charge‐transfer (LMET) model. These nanocomposites can be used as potential optical materials.

Keywords:

• thiol
• polystyrene
• CdS
• nanocomposites
• fluorescence

Acknowledgments

The authors appreciate the generous financial support of this work from the National Nature Science Foundation of China (20476066 and 20571054) the NSF of Jiangsu Province (BK2005031) and project of high technology of Jiangsu Province (BG2005021).