Synthesis and fixation of aminocyanines to microcrystalline cellulose using cyanuric chloride as a cross‐linking agent

Abstract

Although monomethine cyanines and reactive dyes, used mainly in dyeing of textile goods, are well studied, the development of cyanines with groups capable of being bound covalently to a solid support has been largely unexplored. The scope of this study was the synthesis and characterisation of aminocyanines capable of bind to microcrystalline cellulose, through the polyfunctional cross‐linking agent cyanuric chloride. In a second approach, the cyanines bound to microcrystalline cellulose in varying amounts were used as specific ligands in affinity chromatography. Two different methods to determine the amount of cyanine linked to the dyed cellulose were used, based on Fourier transformed infrared spectroscopy and elemental analysis. The fixation yields of the two different cyanines bound to cellulose were determined.