SYNTHESIS AND SPECTRAL-LUMINESCENCE PROPERTIES OF AROMATIC POLYAMIDESAND POLYESTERS WITH CHROMOPHORES IN THE POLYMER MAIN-CHAIN

We report copolycondensation reactions of several benzimidazole-, benz oxazole- and diphenylanthracenyl-containing chromophores with m-phenyl enediamine (MPD), isophthaloyl chloride (IPC) and bisphenol A (BPA) to form polyamides and polyesters. The absorbance and fluorescence spect ra of the polymers were measured and the actual molar ratios of lumino phoric and nonluminophoric moieties in their structures were determine d by comparison to model compounds. Most copolymers showed intense blu e fluorescence, from solution and film, with a maximum in the 410-515 nm range. The present results demonstrate that non-conjugated luminesc ent polymers, which are potentially useful for light-emitting diode ap plications, may be obtained by a one-stage copolycondensation techniqu e.