Ascorbic acid-based quinoxaline derivative as a chromogenic chemosensor for Cu2 +

Abstract Detection of cationic species represents an important field due to its importance in biological and environmental processes. This communication shows the synthesis and application of an ascorbic acid-based quinoxaline derivative ( 1 ) in the colorimetric detection of Cu 2 + against several other cationic species, including Sr 2 + , Fe 2 + , Pb 2 + , Mn 2 + , Mg 2 + , Ni 2 + , Zn 2 + , Sn 2 + , Hg 2 + , Ca 2 + , Ba 2 + , Co 2 + , Cr 3 + , Al 3 + , and Fe 3 + . Based on experimental and theoretical results, a 1:2 binding model involving 1 and Cu 2 + is proposed.