TY - JOUR AB - Purpose This study aims to focus on the possibility of developing new thiazole azo dyes with good colouristic application properties, biological and pharmacological activities.Design/methodology/approach Coupling of curcumin with different aromatic diazonium salts of 2-amino thiazole derivatives, such as 2-aminobenzothiazole, 2-amino-5-phenylthiazole, 2-amino-5-methylthiazole and 2-amino-5-nitrothiazole-produced novel azo dyes. Structures of all synthesised dyes were fully confirmed via spectroscopic and analytical methods. Those compounds were examined for their antimicrobial, anticancer and antioxidant activities. They were applied on polyester fabrics and, subsequently, their dyeing properties, light, washing, perspiration, rubbing and sublimation fastness were determined.Findings Prepared dyestuffs were suitable for dyeing polyester fabrics. It was found that all prepared dyes possess high colour strength, as well as good overall fastness properties. Meanwhile, the synthesised compounds exhibited good biological and pharmacology activity.Research limitations/implications Synthesis of these four azo dyes for textile dyeing was not conveyed earlier.Practical implications Thaizolyl disperse dyes were responsible for giving better colour assessment and fastness properties on polyester fabrics.Social implications Although, most of synthesis eco-friendly dyes are expensive, they are showing a good antimicrobial and anticancer activity.Originality/value It gave straightforward approach to synthesise novel thiazolyl azo dyes with good biological, pharmacology activities, good colour assessment, and fastness properties. VL - 48 IS - 5 SN - 0369-9420 DO - 10.1108/PRT-09-2018-0102 UR - https://doi.org/10.1108/PRT-09-2018-0102 AU - Abu-Melha Sraa PY - 2019 Y1 - 2019/01/01 TI - Synthesis of novel biologically active thiazole dyes and their applications T2 - Pigment & Resin Technology PB - Emerald Publishing Limited SP - 375 EP - 382 Y2 - 2024/09/22 ER -