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MEH-PPV/SiO2 and MEH-PPV/TiO2 nanocomposites with enhanced luminescent stabilities

Sheng Hsiung Yang 2,  Philippe Le Rendu 1,  Thien Phap Nguyen 1

1. LPC, Institut des matériaux Jean Rouxel, BP 32229, Nantes 44322, France
2. National Chiao tung Univ., Dept. of Electronics Eng., Hsinchu 30050, Taiwan

Abstract

Thin films of composites made by incorporation of silicon oxide (SiO2) or titanium oxide (TiO2) nanoparticles into poly[2-methoxy-5-(2'-ethylhexoxy-p-phenylenevinylene] (MEH-PPV) were deposited by spin-coating from p-xylene solutions and their optical properties were investigated. Several techniques have been used for investigating the composite films: scanning electron microscopy (SEM), Fourier transform infrared (FT-IR) and Raman, and photoluminescence (PL). It was observed that the structure of MEH-PPV films was not affected by blending the polymer with nanoparticles, but their absorption and emission were modified and were assigned to the different extents of aggregates in the composites. Furthermore, the degradation experiments showed that the blended films present a higher stability than that of pristine polymers.


 

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Presentation: Oral at E-MRS Fall Meeting 2006, Symposium A, by Thien Phap Nguyen
See On-line Journal of E-MRS Fall Meeting 2006

Submitted: 2006-05-15 08:31
Revised:   2009-06-07 00:44