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Enhancing the photo-oxidation resistance of PPV-type polymers: effect of a radical scavenger addition

Published online by Cambridge University Press:  21 March 2011

G. R. Ferreira ,
B. Nowacki ,
E. R. de Azevedo ,
L. C. Akcelrud  and
R. F. Bianchi
G. R. Ferreira
Affiliation:
Universidade Federal de Ouro Preto, Departamento de Física, Laboratório de Polímerose Propriedades Eletrônicas de Materiais
B. Nowacki
Affiliation:
Laboratório de Polímeros Paulo Scarpa, Universidade Federal do Paraná
E. R. de Azevedo
Affiliation:
Universidade de São Paulo, Instituto de Física de São Carlos
L. C. Akcelrud
Affiliation:
Laboratório de Polímeros Paulo Scarpa, Universidade Federal do Paraná
R. F. Bianchi
Affiliation:
Universidade Federal de Ouro Preto, Departamento de Física, Laboratório de Polímerose Propriedades Eletrônicas de Materiais
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Abstract

A hindered phenol type radical scavenger (Irganox 1010®) was used to improve the resistance to photo-oxidation in PPV-type polymers. The degradation was performed under blue light (460 nm), and the effect of the added compound was investigated following the intensity variation of absorbance and photoluminescence spectra. The results showed that the addition of the compound brought about a significant enhancement in photodegration resistance without interfering in the electronic properties of the polymers. These results suggest that the free radical scavenger attenuates the decrease of the polymer conjugation length induced by the radiation. FTIR measurements confirm this evidence.

Keywords

PPV-type polymersphotodegradationradical scavenger
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1286: Symposium E – Molecular and Hybrid Materials for Electronics and Photonics , 2011 , mrsf10-1286-e03-25
Copyright
Copyright © Materials Research Society 2011

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