Abstract
A multifunctional fluorescent and colorimetric chemosensor 1 (Z)-1-((benzo[d]thiazol-2-ylimino)methyl)naphthalen-2-ol for the detection of both CN− and OAc− in aqueous solution has been developed. This sensor could simultaneously detect two anions through fluorogenic (CN−) and chromogenic (CN− and OAc−) methods. The sensor could function as a “turn-on” fluorescence receptor only to CN−. In addition, the sensor displayed an obvious color change from yellow to colorless upon selective binding with CN− through a nucleophilic addition mechanism. Moreover, the sensor also showed color change from yellow to orange upon deprotonation with OAc−. This is the first report that sensor 1 is able to detect simultaneously both CN− and OAc− by two different detection modes.
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