A fluorescence probe with mitochondrial targeting and two-photon property, its preparation method and application in detecting and tracking endogenous H
2
S in samples or living cells. The fluorescent probe is prepared by a four-step preparation method and demonstrates a UV-vis absorption increment λ
ab
=395 nm and ˜43 fold higher fluorescence intensity in the presence of H
2
S. The probe further demonstrates stability, selectivity for H
2
S over competing agents and sensitivity as low as 20 nm. A method of detecting endogenous H
2
S rapidly in the absence of any external stimulators is provided. Samples are contacted with the probe and the changes in fluorescence are monitored to detect H
2
S levels. The disclosed probe is non-toxic and suitable as a biomarker and therapeutic molecule in cancer and other diseases.
一种具有线粒体靶向和双光子特性的荧光探针,其制备方法及在样品或活细胞中检测和跟踪内源
H2S的应用。该荧光探针通过四步制备方法制备,当存在 时,表现出UV-vis吸收增量λab=395 nm和大约43倍的荧光强度增加。该探针进一步表现出稳定性,对 的选择性优于竞争性试剂,并且具有低至20 nm的灵敏度。提供了一种在没有任何外部刺激剂的情况下快速检测内源 的方法。样品与探针接触,监测荧光变化以检测
水平。所公开的探针无毒,适用作为癌症和其他疾病中的
生物标志物和治疗分子。