Cy‐NiSe and Cy‐TfSe were designed and synthesized as sensitive near‐infrared (NIR) fluorescent probes for detecting thiols on the basis of SeN bond cleavage both in cells and in tissues. Since a donor‐excited photoinduced electron transfer (d‐PET) process occurs between the modulator and the fluorophore, Cy‐NiSe and Cy‐TfSe have weak fluorescence. On titration with glutathione, the free dye exhibits
Cy-NiSe和Cy-TfSe被设计并合成为敏感的近红外(NIR)荧光探针,用于基于细胞和组织中SeN键的裂解来检测
硫醇。由于在调制器和荧光团之间发生了供体激发的光诱导电子转移(d-PET)过程,因此Cy-NiSe和Cy-TfSe的荧光很弱。用
谷胱甘肽滴定时,游离
染料显示出显着的荧光增强。与其他相关
生物物种相比,这两种探针对
硫醇敏感且具有选择性。它们可以在pH 7.4时快速起作用,并且其发射位于NIR区域。共聚焦成像证实Cy-NiSe和Cy-TfSe可用于检测活细胞和组织中的
硫醇。