POLYMERS FROM COUMARINES - 4 - DESIGN AND SYNTHESIS OF NOVEL HYPERBRANCHED AND COMB-LIKE COUMARIN-CONTAINING POLYMERS

Novel monomers containing coumarin groups [2-(7-Cumarinyloxy)Oethoxy] dimethyl terephthalate and [6-(3-carboxy)coumarinyl] diacetylhydroquin one were synthesized and polymerized by high temperature polycondensat ion to give hyperbranched and comb-like coumarin-containing polymers. All polymers were completely soluble in chlorinated aliphatic hydrocar bons and showed M-n in the range of 2000-50000 and gave film of good o ptical quality on casting from solution. All polymers except one were amorphous with T-g in the range of 100-230 degrees C and thermostabili ty of 370-415 degrees C. All polymers were found to be blue emitters e mitting light in the range 450-492 nm. (C) 1998 Elsevier Science Ltd. All rights reserved.