丹酰基团修饰的喹啉衍生物作为Cu^(2+)和Hg^(2+)荧光探针研究

Fluorescence Probe for Copper (Ⅱ) and Mercury (Ⅱ) Based on the Dansyl Aminoquinoline

合成并表征了一种具有良好水溶性的荧光探针——8-(丹磺酰氨基)喹啉,它能在水溶液中荧光识别和检测Cu2+和Hg2+.随着2种离子浓度的增加,该探针的荧光发射强度均发生较大程度的猝灭,而相同测试条件下,其他8种重金属离子对该荧光探针的荧光发射性质影响不大,说明8-(丹磺酰氨基)喹啉是一种对Cu2+和Hg2+具有选择性识别的荧光探针.

A good water-soluble fluorescence probe 8-dansyl-aminoquinoline （DK） was synthesized and characterized. The probe showed fluorescence recognition and detection to copper （ Ⅱ） and mercury （ Ⅱ） ions in aqueous solutions. Upon the addition of Cu^2 ＋ and Hg^2＋ , the fluorescent emission intensity of the probe was quenched. Other metal ions did not show similar recognition signals at the same condition. The molecule is a fluorescence probe with selectivity toward Cu^2＋ and Hg^2＋.