Synthesis of CdS Nanoparticle/Amphiphilic Block Copolymer Composite Films and its Characteristics of Microstructures and Optoelectronic Properties

Abstract:

In this study, block copolymers of PS-b-PMSMA with various molecular weight were synthesized by atom transfer radical polymerization (ATRP). GPC analysis showed that the molecular weight distribution of the prepared PS-b-PMSMA could be controlled to be lower than 1.3 for the case of molecular weight less than 30,000. The chemical structures of the amphiphilic block copolymers of PS-b-PMSMA were well identified by FTIR. SEM showed that the spherical micelles and compound micelles were produced in hybrid films. The EDX analysis indicated that the nano-sized CdS particles have been successfully prepared in the PS-b-PMSMA composite films. The diameter of CdS particles calculated from Brus formula was about 4-5 nm. PL analysis revealed that the λmax of emission of the prepared composite materials had a red-shift as the CdS particle size increased.

• Periodical: Advanced Materials Research (Volumes 79-82)
• Pages: 887-890
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.79-82.887
• Online since: August 2009
• Authors: Yang Yen Yu, Wen Chen Chien, Yu Heng Chou
• Keywords: Amphiphilic Block Copolymer, CdS, Nanoparticle, Photoluminescence (PL), PS-b-PMSMA, Quantum Effect

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