New fluorescent symmetrically substituted perylene-3,4,9,10-dianhydride-azohybrid dyes: Synthesis and spectroscopic studies
作者:Aamer Saeed、Ghulam Shabir
DOI:10.1016/j.saa.2014.04.171
日期:2014.12
Five phenolic azo-dyes (3a–e) were synthesized by diazocoupling of the suitably substituted anilines (1a–e) with phenol at low temperature in alkaline medium. The resulting dyes have low solubility in aqueous medium due to lack of carboxylic or sulfonic solubilizing functionalities. The hybridization of perylene dianhydride with phenolic azo-dyes was achieved by the nucleophilic aromatic substitution