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Dispersion of Metal Oxide Nanoparticles in Conjugated Polymers: Investigation of the Tio2/PPV Nanocomposite

Published online by Cambridge University Press:  10 February 2011

M.-I. Baraton ,
L. Merhari ,
J. Wang  and
K. E. Gonsalves
M.-I. Baraton
Affiliation:
LMCTS, Faculty of Sciences, 123 Av. A. Thomas, F-87060 Limoges (France)
L. Merhari
Affiliation:
CEKAMEC R&D, 64 avenue de la Libération, F-87000, Limoges, (France)
J. Wang
Affiliation:
Polymer Program at the Institute of Materials Science
K. E. Gonsalves
Affiliation:
Polymer Program at the Institute of Materials Science Department of Chemistry, University of Connecticut, Storrs, CT 06269
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Abstract

It is well established that the dispersion of nanosized metal particles in a polymer matrix can induce non linear optical properties, yet very little is known about the effect of semiconducting transition metal oxide nanoparticles on both electrical and luminescence properties of conjugated polymers. In this paper, we report the synthesis of a nanostructured TiO2/poly(pphenylenevinylene) system and show by diffuse reflectance infrared Fourier transform spectrometry (DRIFTS) that a stable conjugated nanocomposite is obtained. Investigation of the photoluminescence (PL) properties reveals both a broadening and a blue shift of the emission spectra. Adsorption of oxygen is found to be stronger on the nanocomposite than on PPV and to reversibly quench the PL emission, thus suggesting enhanced gas sensing properties. A tentative mechanism explaining the role of n-TiO2 is briefly discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 501: Symposium FF – Surface Controlled Nanoscale Materials for High-Added… , 1997 , 59
Copyright
Copyright © Materials Research Society 1998

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References

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