Cross-bond energy transfer type Hg<2+> fluorescent probe, preparation method and application thereof

The invention discloses a cross-bond energy transfer type Hg fluorescent probe, a preparation method and application thereof, and belongs to the technical field of fluorescent probes. According to the cross-bond energy transfer type Hg fluorescent probe disclosed by the invention, organic amine is taken as a donor, rhodamine B is taken as a receptor, and detection of the fluorescent probe on Hg in a solution is realized through response of thio-bishydrazide to Hg; and the cross-bond energy transfer type Hg fluorescent probe has a structural formula shown in the specification, can be used for detecting the concentration of trace Hg in an aqueous solution, and also can be applied to trace detection of Hg in Hela cells and preparation of detection paper for detecting the Hg in the solution. 一种跨键能量转移型Hg2+荧光探针、制备方法及其应用，属于荧光探针技术领域。本发明公开的跨键能量转移型Hg2+荧光探针，以有机胺为供体，以罗丹明B为受体，通过硫代双酰肼对Hg2+的响应实现了荧光探针对溶液中Hg2+的检测。该跨键能量转移型Hg2+荧光探针的结构式如下所示，其可以用于检测水溶液中微量Hg2+浓度，还可以在Hela细胞中痕量检测Hg2+、制备检测纸检测溶液中Hg2+方面得