Several novel unconjugated oxdiazole-containing ploy(aryl ether) type organic light emitting materials of PE1

PE2 and PE3 were synthesized through nucleophilic substitution reaction of monomer Ma [2

5-bis(2-ethyl-hexoxy)-1

4-bis{2

2′-〔5-(p-fluorophenyl)〕-1

3

4-oxodiazole}benzene] and another three parts of compounds(biphenol A

sulfonobisphenol A and mixed sulfono-biphenyl) in the mixture solution of N

N-dimethyl acetamide and toluene at a temperature of 165℃

catalysted by potassium carbonate. Their chemical structures were characterized by H 1 NMR and element analysis. Their solubility was apparently improved by introducing of double flexible side-chain substitutes. The polymers were obtained in a good yield via controlling reaction condition and polymerization temperature. Chemical and physical properties of these materials were investigated by absorption spectra

photoluminescent spectra and current-voltage relation. Absorption peaks of PE1

PE2 and PE3 at 374

374

397nm respectively are almost identical. Nevertheless

the photoluminescent peak of PE3 at 572nm exhibits a large bathochromic shift contrast to them of PE1 and PE2 at 439

438nm respectively. Fabrications of simple devices based on these polymers with structure of ITO/polymer/Ca/Ag were firstly performed. Results show these materials have blue light emitting as well as good thermal stability.