Controlled nucleation and growth of CdS nanoparticles in a polymer matrix

Tiziana Di Luccio, Anna Maria Laera, Leander Tapfer, Susanne Kempter, Robert Kraus, Bert Nickel

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Abstract

In-situ synchrotron X-ray diffraction (XRD) was used to monitor the thermal decomposition (thermolysis) of Cd thiolates precursors embedded in a polymer matrix and the nucleation of CdS nanoparticles. A thiolate precursor/polymer solid foil was heated to 300°C in the X-ray diffraction setup of beamline W 1.1 at Hasylab, and the diffraction curves were each recorded at 10°C. At temperatures above 240°C, the precursor decomposition is complete and CdS nanoparticles grow within the polymer matrix forming a nanocomposite with interesting optical properties. The nanoparticle structural properties (size and crystal structure) depend on the annealing temperature. Transmission electron microscopy (TEM) and photoluminescence (PL) analyses were used to characterize the nanoparticles. A possible mechanism driving the structural transformation of the precursor is inferred from the diffraction features arising at the different temperatures. © 2006 American Chemical Society.
Original languageEnglish
Pages (from-to)12603 - 12609
Number of pages7
JournalJournal of Physical Chemistry B
Volume110
Issue number25
DOIs
Publication statusPublished - 29 Jun 2006
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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