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This research involved the synthesis of poly (1,4-phenylene-1,2-di ( p-phenoxyphenyl) vinylene), dpop-PDV from di (p-phenoxybenzoyl) benzene compound as the monomer. The potential of the produced polymer as sensing reagent for O 2 detection based on fluorescence quenching was studied. Di ( p-phenoxybenzoyl) benzene was synthesised via the Friedel-Crafts benzoylation with terephthaloydichloride and biphenylether as starting materials and anhydrous AlCl 3 as the catalyst, while the dpop-PDV was synthesized via the McMurry coupling reaction. The polymerization was carried out in THF with TiCl 4 and Zn as the catalyst and reducing agent respectively. Characterization on monomer and polymer had been carried out by using FTIR, GCMS, DSC, TGA, GPC and melting point measurement. Response of the polymer towards oxygen gas was described in terms of fluorescence spectra, repeatability, reproducibility and the response curve. Results obtained showed that the fluorescence intensity decreased upon exposure to O2 gas, indicating that the polymer was responsive to the presence of the O 2 gas and the sample was found regenerable by flushing the polymer solution with N 2 gas.

Optical Response of Poly (1,4-Phenylene-1,2-Di (P-Phenoxyphenyl) Vinylene) Towards Oxygen Gas