In situ fabrication and optical properties of a novel polystyrene/semiconductor nanocomposite embedded with CdS nanowires by a soft solution processing route

Shu Hong Yu, Masahiro Yoshimura, Jose Maria Calderon Moreno, Takeshi Fujiwara, Takahiro Fujino, Ryo Teranishi

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68 Citations (Scopus)

Abstract

A novel one-step soft solution-processing route called the solvothermal-copolymerization technique was successfully developed for in situ fabrication of polystyrene (PS)/CdS nanocomposites embedded with CdS nanowires in ethylenediamine media at lower temperatures (80-140 °C). In this route, the polymerization of the monomers and the formation of the CdS nanocrystallites occur simultaneously in a certain temperature range. The results of X-ray powder diffraction, transmission electron microscopy, and high-resolution transmission electron microscopy confirmed that the embedded CdS nanowires, with diameters of 4-15 nm and lengths up to several micrometers, have [001] preferential orientation. Both temperature and solvent were found to play a key role in the synthesis of the nanocomposites. The produced novel hybrid nanocomposites display obvious quantum size effects and interesting fluorescence features. The spectroscopic properties of the PS/CdS nanowire nanocomposites were found to be sensitive to synthetic conditions, including the concentrations of Cd2+ or the monomer, temperature, and reaction time.

Original languageEnglish
Pages (from-to)1700-1707
Number of pages8
JournalLangmuir
Volume17
Issue number5
DOIs
Publication statusPublished - Mar 6 2001
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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