H. Jo, G. Park, Y. Na
Oct 1, 2014
Citations
1
Influential Citations
50
Citations
Journal
Dyes and Pigments
Abstract
Abstract A new chemo-sensor ( E )-4-((2-((2-hydroxynaphthalen-1-yl)methylene)amino)phenyl-amino)-3-nitro-2H-chromen-2-one ( 1 ) based on the combination of 2-hydroxy-1-naphthaldehyde and precursor 4-((2-aminophenyl)amino)-3-nitro-2H-chromen-2-one was designed and synthesized as a selective colorimetric sensor for Cu 2+ . 1 exhibited a color change from yellow to orange in the presence of Cu 2+ in aqueous solution and the resulting 1 -Cu 2+ complex sensed cyanide through naked eye. Moreover, 1 could be used as a practical, visible colorimetric test strip for Cu 2+ in aqueous environment. These results demonstrate a new type of the sequential recognition of Cu 2+ and CN − by a convenient, easy and colorimetric method.