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A new bi-functional chemosensor 1 based on 3,5-dichlorosalicylaldehyde and 2-(methylthio)aniline has been synthesized. It can detect Cu2+ with a color change from pale yellow to dark yellow in aqueous solution. The selective mechanism of 1 for Cu2+ was proposed to be the enhancement of the intramolecular charge transfer (ICT) band, which was explained by theoretical calculations. The sensor 1 could...
A new colorimetric and fluorescent receptor 1 for the detection of CN− has been simply developed. Receptor 1 showed selectively colorimetric and fluorometric responses to CN− in a near-perfect aqueous solution, respectively. This sensor displayed an obvious color change from yellow to colorless upon selective binding with CN−. In addition, it could function as an “OFF-ON type” fluorescent response...
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