Structural characterization of CdS nanoparticles grown in polystyrene matrix by thermolytic synthesis

F. Antolini, M. Pentimalli, T. Di Luccio, R. Terzi, M. Schioppa, M. Re, L. Mirenghi, L. Tapfer

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Abstract

Cadmium sulfide nanoparticles embedded in a polystyrene matrix (CdS/PS) were successfully prepared by in situ thermolysis of a cadmium thiolate precursor dispersed in the polymer. The heat-induced formation of cadmium sulfide was studied by thermogravimetric analysis and differential thermal analysis, while the chemistry of the reaction forming the CdS/PS compound was investigated by nuclear magnetic resonance and X-ray photoelectron spectroscopy. The structural characterization was performed by X-ray diffraction and transmission electron microscopy. The CdS nanocrystals are single crystals of cubic phase (zincblende structure) of spherical shape. The average diameter of the nanocrystals embedded in the polystyrene matrix achieved by our synthesis process is as small as 2.5 ± 0.5 nm. Room temperature UV-VIS absorption spectra exhibit a shoulder at 412 nm that is consistent with the presence of CdS nanocrystals of Ø ≈ 2 nm. The role of the polymer on the nanoparticle growth was also discussed. © 2005 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)3181 - 3187
Number of pages7
JournalMaterials Letters
Volume59
Issue number24-25
DOIs
Publication statusPublished - Oct 2005
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Antolini, F., Pentimalli, M., Di Luccio, T., Terzi, R., Schioppa, M., Re, M., ... Tapfer, L. (2005). Structural characterization of CdS nanoparticles grown in polystyrene matrix by thermolytic synthesis. Materials Letters, 59(24-25), 3181 - 3187. https://doi.org/10.1016/j.matlet.2005.05.047