Structure of Nanocomposite films of CdS nanoparticles in a polymer matrix

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Abstract

A thiolate precursor was dispersed in a polymer solution and a precursor/polymer film was obtained by casting. Thermal annealing of the precursor/polymer film leads to the formation of a nanocomposite of nanometer-sized CdS dispersed in the polymer (thermolytic process). Different polymers were used as matrix material; in particular we employed a cyclo-olefin copolymer for its good optical properties and extremely low water absorption. After annealing with a temperature between 230 and 250°C in vacuum (pressure of about 6×10-3 mbar) the CdS nanoparticles are found to be crystalline with a diameter of about 2nm in size. The nanoparticle size can be increased up to 15nm by annealing at higher temperatures (300°C). The details of the structural properties of the nanocomposite films have been investigated by small and wide angle x-ray scattering (SAXS and WAXS, respectively). A simple dependence of the nanoparticle dimensions on the annealing temperature was found. Furthermore, SAXS measurements indicate that the separation between the nanoparticles compares with their diameter. © 2005 Materials Research Society.
Original languageEnglish
Publication statusPublished - 2005
Externally publishedYes
Event2004 Materials Research Society Fall Meeting - , United States
Duration: 1 Jan 2005 → …

Conference

Conference2004 Materials Research Society Fall Meeting
CountryUnited States
Period1/1/05 → …

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All Science Journal Classification (ASJC) codes

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

Cite this

Di Luccio, T., Nickel, B., Antolini, F., Pentimalli, M., & Tapfer, L. (2005). Structure of Nanocomposite films of CdS nanoparticles in a polymer matrix. Paper presented at 2004 Materials Research Society Fall Meeting, United States.