Synthesis and characterization of copolymer derived from poly-phenylene-vinylene potentially luminescent copolymers

The objective of the present work, described in this paper, is to synthesiz e and characterize new conjugated materials with tunable properties, as wel l as to contribute to a better understanding of their structure and physica l properties. This copolymer, derived from poly-phenylene-vinylene (PPV), d enoted PPV-ether is amorphous and insoluble in common solvents. It was char acterized by infrared absorption (IR), Raman scattering, optical density (O D), gravimetric thermal analysis (GTA), differential thermal analysis (DTA) , X-ray photoelectron spectroscopy (XPS) and photoluminescence. After synth esis and purification the copolymer PPV-ether is obtained with oligomer (F3 ), a fraction of copolymer, which is soluble. The results of GTA and DTA sh ow that this copolymer is very stable. The IR, Raman scattering, and XPS st udies show the good purity of the materials and confirm the proposed struct ure. The OD and photoluminescence (PL) measurements show that this copolyme r can be exploited in optoelectronic applications. (C) 2001 Elsevier Scienc e Ltd, All rights reserved.