SOME SPECIFIC FEATURES THE SYNTHESIS OF LUMINESCENT POLYMERIC SCHIFF-BASES

A number of luminescent polymeric Schiff bases were prepared by condensation polymerization of luminophoric diamines with aromatic dialdehydes in N-methylpyrrolidone. Specific features of the synthetic procedure as affected by the nature of the starting reagents were examined. The absolute quantum yield of polymer solution luminescence was measured, and the glass transition temperatures were calculated for all the polymers synthesized. The luminescence efficiency of polymer solutions was found to directly correlate with the glass transition temperature of the polymers, which may be regarded as a measure of the chain stiffness.