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Red-shifted and pH-responsive imidazole-based azo dyes with potent antimicrobial activity
Daniela Dantas1, Ana I Ribeiro1,2, Filipe Carvalho1
1Centre of Chemistry, Department of Chemistry, University of Minho, Campus of Gualtar, Braga 4710-057, Portugal. ad@quimica.uminho.pt.
Abstract:
A novel route is described to obtain 2-aminoimidazole azo dyes with a unique substituent pattern in the heteroaryl unit that provides halochromic properties, exhibiting vibrant colours that change from magenta to deep blue. Potent antimicrobial properties against infectious yeasts were demonstrated. No cytotoxicity was detected for concentrations lower than 16 μg mL-1.
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