A simple preparation of a stable CdS-polyacrylamide nanocomposite: structure, thermal and optical properties

J Nanosci Nanotechnol. 2013 Nov;13(11):7707-11. doi: 10.1166/jnn.2013.7829.

Abstract

A facile approach was employed for the preparation of stable luminescent nanocomposites of CdS quantum dots (QDs) and polyacrylamide (PAM) through the cross coupling chemistry. Initially, CdS QDs were synthesized in a well controlled manner using 3-mercaptopropionic acid as a capping agent. Then, carboxylic acid groups on CdS QDs were chemically incorporated into PAM matrices with the assistance of 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide hydrochloride and N-hydroxysulfosuccinimide coupling agents. FT-IR analysis was used to investigate the chemical incorporation of CdS QDs in PAM matrices via the covalent protocol. The XPS elemental mapping studies further suggested the formation of CdS-PAM nanocomposites. FE-SEM and TEM images were engaged to study the morphologies, and distribution of CdS QDs in the PAM networks. The physical structure of the CdS-PAM nanocomposites was investigated by XRD analysis. Thermal stability of the nanocomposites was observed to be enhanced in compare to PAM as evidenced from TGA data. The UV-vis and photoluminescence studies of the CdS-PAM nanocomposites suggested their promising optical applications.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acrylic Resins / chemistry*
  • Cadmium Compounds / chemical synthesis*
  • Crystallization / methods*
  • Luminescence*
  • Macromolecular Substances / chemistry
  • Materials Testing
  • Molecular Conformation
  • Nanostructures / chemistry*
  • Nanostructures / ultrastructure*
  • Particle Size
  • Quantum Dots*
  • Refractometry
  • Selenium Compounds / chemical synthesis*
  • Surface Properties
  • Thermal Conductivity

Substances

  • Acrylic Resins
  • Cadmium Compounds
  • Macromolecular Substances
  • Selenium Compounds
  • polyacrylamide
  • cadmium selenide