Diacetylene-containing polymers XII. Synthesis and characterization of dye-containing poly(hexa-2,4-butadiynylenoxydibenzoates)

Abstract

Abstract - Several novel diacetylene-containing polymers containing diacetylenic groups in the main chains and dyes in the side-chains were synthesized using para- and meta- propargyloxybenzoic acids and four azo dyes. The polymers were synthesized by the oxidative coupling polymerization of dye-containing bisacetylenic monomers, and were characterized and their thermal properties examined. All of the polymers gave thin films with excellent optical quality by casting or spin coating. They showed Tg at around 100°C and the diacetylenic groups cross-linked on heating at above 160°C. The UV-irradiated spin-coated films were no longer soluble in the solvent and did not even swell or come off from the substrate, indicating that the films cross-linked completely.

Keywords:

• diacetylene
• cross-linking
• polar dyes
• second order nlo