Synthesis and photophysical characterization of 4,7-bis(4-hydroxyphenyl)-5,6-BINOL-Benzo[2,1,3]thiadiazole and 4,7-bis(4-hydroxystyryl)-5,6-BINOL-Benzo[2,1,3]thiadiazole and application for luminescent hair dyes. Vietnam j. catal. adsorp. 2026;15(2):41-45. doi:10.62239/jca.2026.022