Dyes Derived from Carbazole

Dyes derived from carbazole belong to several structural classes of dyes as azo or anthraquinone and to several tincturial classes as VAT, acid, cationic, disperse etc. dyes [1]. Carbazole dyes can dye natural proteic fibers such as wool, silk or synthetic fibers as polyamides or polyesters [2]. These dyes have good tincturial qualities and a great affinity for the fabrics and superior fastness properties to light, wet and humido-thermal treatments. Dyes derived from carbazole contain the carbazole residue linked to anthraquinone, azo and polyazo or azomethine residues. They can be used, depending on their structure, as disperse, cationic or direct dys. The color of the carbazole dyes can range from orange – yellow and red to green, blue, violet and black [4]. Some carbazole derivatives may show fluorescence.