Facile Preparation of Optically Tailored Hybrid Nanocomposite

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 pr...

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Bibliographic Details
Published in:Journal of nanomaterials 2014-01, Vol.2014 (2014), p.1-7
Main Authors: Mallavia, R., Alonso, J. L., Ferrer, J. C., Fernández de Ávila, Susana, Rakkaa, B.
Format: Article
Language:English
Subjects:
Deposition
Energy transfer
Nanocomposites
Nanocrystals
Nanomaterials
Nanoparticles
Nanostructure
Optical properties
Polymer films
Quenching
Solvents
Spin coating
Thin films
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Summary: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.
ISSN:1687-4110
1687-4129
DOI:10.1155/2014/671670