A new, highly selective and sensitive colorimetric chemosensor 1 for detection of Cu2+ ions in aqueous solution was developed. Receptor 1 detected Cu2+ ions by changing its color from colorless to yellow. Moreover, the Cu2+-sensitive compound was used as a colorimetric pH detector based on a color change due to 1–Cu2+ complex formation identifiable by the naked eye.
J. Y. Noh, G. J. Park, Y. J. Na, H. Y. Jo, S. A. Lee and C. Kim, Dalton Trans., 2014, 43, 5652 DOI: 10.1039/C3DT53637H
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