1,8‐Naphthalimides as Blue Emitting Fluorophores for Polymer Materials

Abstract

Abstract The copolymerization of 1,8‐naphthalimide derivatives (as fluorophore) with acrylonitrile has been investigated. The photophysical characteristics of monomeric and polymeric fluorophores in N , N ‐dimethylformamide solution have been determined and discussed. During copolymerization, no changes in the chromophoric systems of the fluorophore occur. The influence of the studied monomeric 1,8‐naphthalimide fluorophores upon the structurally bleached polyacrylonitrile has been determined. Infrared absorption characteristics of the polymerizable 4‐alkoxy‐ and 4‐allyloxy‐ N ‐substituted‐1,8‐naphthalimides have been measured and discussed. The effect of the substituents upon the vibration frequencies of the carbonyl and allylic groups has been established. Blue fluorescent polyacrylonitrile copolymers with 1,8‐naphthalimides side‐group. magnified image Blue fluorescent polyacrylonitrile copolymers with 1,8‐naphthalimides side‐group.