| αFluorescent probes are widely used in the field of molecular recognition for itscharacteristics of sensitive, efficient, fast response, accurate and simple operation. Inrecent years, the fluorescent molecular probes were the research hotspot in environmentalmonitoring and life sciences areas. Compared to the other fluorophore, the-arylcinnamonitrile derivatives have many advantages (like simple structure, easy synthesisand high fluorescence quantum yield), so we developed two new kinds of fluorescentprobes which based on-aryl cinnamonitrile derivatives to detect the cyanide and sulfideions.(1) We synthesized-aryl cinnamonitrile derivatives1a,1b,1c and4a, their structurewere characterized by1H NMR,13C NMR and IR.(2) Probe1a,1b and1c were new kinds of cyanide fluorescence probes to detectcyanide based on PET mechanism. All of them could detect low concentration of cyanideanions. The probe1a was the most sensitive one, for the lowest concentration of cyanideanions it could detect was as low as1.0μM. The probe1a could successfully recognizecyanide anions under the interface of other15kinds of anions. Moreover, the probe1acould selectively detect cyanide anions even in the presence of hydrogen sulfite anddicarbonate anions, which was reported to easily interfere with the detection. At last, theprobe1a was able to detect cyanide in real water samples (river water, lake water, tapwater).(3) A new kind of fluorescent probe4a was synthesized for the detection of sulfideion. The recongition was based on AIE mechanism, but the detailed reaction process andmechanism was still being studied. It was found that the probe was very sensitive to detectsulfide ions, for the lowest concentration of sulfide ions it could detect was as low as0.1μM. In addition, the probe could also keep high sensitivity in the real water sample (lakewater). The probe could successfully recognize sulfide anions under the interface of other16kinds of anions. |
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