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A new coumarin-derived imine IC1 was designed for highly selective sensing of Zn 2+ over Cd 2+ ions in aqueous solution based on a controllable CN isomerization mechanism. Methyl as a fine controllable unit was incorporated into IC1 to tune the conformational change of imine and thus significantly improve its selectivity to Zn 2+ compared with methyl-free imine IC2. Sensor...
A ‘switching-on’ fluorescent chemosensor for the selective and sensitive signaling of intraceullar Cr 3+ has been designed and synthesized exploiting the guest-induced prohibition of the photoinduced electron transfer process between naphthyridine moiety and 7,10-diphenylfluoranthene moiety, the system shows a Cr 3+ -selective chelation-enhanced fluorescence response not only in ethanol...
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