论文部分内容阅读
A quinoline-based colorimetric chemosensor(QDB) for Cu2+was synthesized by coupling quinoline-2-carbaldehyde with 4-(dimethylamino)benzohydrazide. Although most transition metal cations can cause redshifts in the UV–vis spectrum of QDB, the response of the chemosensor for Cu2+can be easily distinguished because it exhibits the largest redshift together with a color change from colorless to red in response to Cu2+. Other metal ions have no effect on the specific response of QDB to Cu2+. The significant redshift and color change were attributed to Cu2+-induced deprotonation of NH in the sensor.
A quinoline-based colorimetric chemosensor (QDB) for Cu2 + was synthesized by coupling quinoline-2-carbaldehyde with 4- (dimethylamino) benzohydrazide. Although most transition metal cations can cause redshifts in the UV-vis spectrum of QDB, the response of the chemosensor for Cu2 + can be easily distinguished because it exhibits the largest red shift together with a color change from colorless to red in response to Cu2 +. Other metal ions have no effect on the specific response of QDB to Cu2 +. The significant red shift and color change were attributed to Cu2 + -induced deprotonation of NH in the sensor.