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Journal of Nanomaterials
Volume 2014, Article ID 671670, 7 pages
http://dx.doi.org/10.1155/2014/671670
Research Article

Facile Preparation of Optically Tailored Hybrid Nanocomposite

1Departamento de Ingeniería de Comunicaciones, Universidad Miguel Hernández, Edificio Innova, Avda. de la Universidad s/n, Elche, 03202 Alicante, Spain
2Instituto de Biología Molecular y Celular, Universidad Miguel Hernández, Edificio Torregaitán, Avda. de la Universidad s/n, Elche, 03202 Alicante, Spain

Received 24 July 2014; Accepted 16 September 2014; Published 13 October 2014

Academic Editor: Joydeep Dutta

Copyright © 2014 Susana Fernández de Ávila et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Lead sulfide nanoparticles (PbS NPs) have been synthesized directly in poly[2-methoxy-5-(3′,7′-dimethyloctyloxy)-1,4-phenylenevinylene] (MDMO-PPV) semiconducting polymer by a simple low temperature method. Hybrid solutions with different concentrations of PbS with respect to the polymer have been prepared and characterized first in solution and then as thin film nanocomposites deposited on quartz substrates by spin coating. Quenching of photoluminescence emission is observed both in solutions and thin films when the ratio of PbS NPs increases with respect to the polymer, suggesting the occurrence of Dexter energy transfer from the polymer to the PbS NPs. Optical absorption is markedly increased for hybrid solutions compared to pure polymer. In thin nanocomposite films an enhancement of absorbance is observed with increasing PbS NPs concentration, which is more pronounced below 400 nm. The reported results could lead to the development of a method for tailoring the optical response of devices based on PbS NP-polymer nanocomposite by controlling the PbS NP concentration inside the polymer matrix.