A fluorescence probe with mitochondrial targeting and two-photon property, its preparation method and application in detecting and tracking endogenous H2S in samples or living cells. The fluorescent probe is prepared by a four-step preparation method and demonstrates a UV-vis absorption increment λab=395 nm and ˜43 fold higher fluorescence intensity in the presence of H2S. The probe further demonstrates stability, selectivity for H2S over competing agents and sensitivity as low as 20 nm. A method of detecting endogenous H2S 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 H2S 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、其制备方法以及在检测和追踪样品或活细胞中内源性
H2S 中的应用。该荧光探针采用四步制备法制备而成,在 存在的情况下,其紫外可见吸收增量 λab=395 纳米,荧光强度高出˜43 倍。该探针进一步证明了其稳定性、对 的选择性和低至 20 纳米的灵敏度。提供了一种在没有任何外部刺激物的情况下快速检测内源性 的方法。将样品与探针接触,监测荧光变化以检测
水平。所公开的探针无毒,适合用作癌症和其他疾病的
生物标记和治疗分子。