SYNTHESIS AND SPECTRAL PROPERTIES OF NEW N-SUBSTITUTED NAPHTHALIMIDE LUMINOPHORES FOR STRUCTURAL COLORATION OF POLYMETHYLMETHACRYLATE AND POLYSTYRENE

Two new unsaturated acryloxide derivatives of 4-amino-substituted-1,8- naphthalimide luminophores were synthesized. Their absorption and fluo rescent properties were determined in both CHCl3 and C2H5OH. The lumin ophores display a broad absorption band in the visible spectral region (halfband-width up to 4433 cm(-1)) and a fluorescence in the yellow-g reen region (526-530 nm). The compounds are yellow colored, with a hig h brightness (from 2.92 up to 6.75) and a purity of color. The possibi lity of including naphthalimide luminophores in copolymerization proce ss with ST and MMA resulting in the formation of colored polymers was investigated. It was found that no changes in the chemical structure o f the chromophore group occurred during copolymerization. More than 92 % of the initial luminophores were bound to the polymer chain. The inf luence of the luminophores on the kinetics of polymerization was studi ed, and the average viscosimetric molecular weight, <(M)over bar (v)> of the obtained colored polymers estimated. (C) 1997 John Wiley & Sons , Inc.