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Sherif S. Ragab,Ayman M. K. Sweed,Zeinab K. Hamza,Elkhabiry Shaban,Ahmed A. El-Sayed 한국섬유공학회 2022 Fibers and polymers Vol.23 No.8
We designed and developed a novel series of bioactive disperse dyes by conjugation of spirocyclic 2-thiopyrimidine scaffold with aryl or sulfa drug moieties in the same construct through azo linker to take advantage of thebioactive character of both motifs. The target molecules were simply approached on a gram scale via the diazocoupling ofspirocyclic 2-thiouracil 1 with aryl diazonium chloride derivatives to afford the heterocyclic azo-disperse dyes 4a-e inexcellent yield. These azo dyes were effectively utilized to make pastes for silkscreen printing of polyester fabrics. The colorcharacteristics of the dyes and their fastness properties including washing, rubbing, perspiration, sublimation, and lightfastness were also investigated. The antimicrobial activity of the produced dyes 4a-e was evaluated against some Grampositiveand Gram-negative bacteria, and the results revealed that 4d was more active than the standard drug cefoperazoneagainst the Gram-positive bacteria S. aureus. The antibacterial efficacy of the treated fabrics has also been investigatedrevealing that the dyed fabric 4b was found to have a potent inhibition on B. cereus (93 %), and against E. coli with areduction of (90 %).