[Paper] Syntheses and Physical Properties of Carbazole-Phthalonitrile-Hybridized Light-Emitting Materials

Abstract

A series of carbazole-phthalonitrile hybridized light-emitting materials having expanded π-systems at the carbazole moieties were synthesized, and their physical properties such as cyclic voltammogram, UV-vis absorption spectra and photoluminescence spectra in solution and the solid states. These measurements showed that 5-carbazolyl-1, 3-phtalonitiriles have more largely expanded π-systems than 2-carbazolyl-1, 3-phtalonitiriles to exhibit bathochromic shifts in UV-vis absorption and emission spectra. Amino-substituted derivatives served as acid-sensors in CH₂Cl₂, and the intensities of their photoluminescence increased in accordance to the amount of 10-camphorsulfonic acid added.