excellent sensing properties. First, CyT is highly selective against other biologically relevant anions, cations, reactive sulfur and small molecules; meanwhile, it has a low limit of detection (LOD) to H2S (7.33 nM) In addition, CyT exhibits rapid response to H2S (rate constant is 1464 M−1 s−1) and apparent color change from dark blue to very pale green, which is observed with the naked-eye. Furthermore, it
硫化氢(H 2 S)是涉及许多生物过程的显着内源性气体递质,因此迫切需要在活细胞和动物中进行无创,快速和准确的测量。在此,我们报告了一种比例荧光H 2 S特异性探针(CyT)。这种新的探针可以通过修改三氟甲磺酸基(CF容易地制备3 SO 3 - )成半菁,它显示出优异的传感特性。首先,CyT对其他生物学相关的阴离子,阳离子,反应性硫和小分子具有高度选择性。同时,它具有检测(LOD)的至H的低限2 S(7.33 nM)的另外,CYT表现出对H 2 S的快速响应(速率常数为1464 M -1 s -1),并且用肉眼观察到明显的颜色从深蓝色变为非常浅的绿色。此外,它对HeLa细胞显示出低细胞毒性,可成功用于检测细胞和斑马鱼中的H 2 S活性。
Construction of a near-infrared fluorescence turn-on and ratiometric probe for imaging palladium in living cells
作者:Hua Chen、Weiying Lin、Lin Yuan
DOI:10.1039/c3ob27507h
日期:——
A new NIR fluorescent probe, NIR-Pd, for palladium species was designed and synthesized, based on a HD NIR fluorophore and deprotection of aryl propargyl ethers by palladium. The probe NIR-Pd displayed either a large NIR fluorescence turn-on or ratiometric response to palladium with high sensitivity and selectivity. Additionally, the novel NIR probe can monitor palladium species in live HeLa cells by NIR fluorescence imaging.
基于高清近红外荧光团和钯对芳基丙炔醚的脱保护作用,设计并合成了一种新的钯类近红外荧光探针 NIR-Pd。探针 NIR-Pd 显示出较大的近红外荧光开启或对钯的比率反应,具有高灵敏度和高选择性。此外,这种新型近红外探针还能通过近红外荧光成像监测活体 HeLa 细胞中的钯物种。
A NIR fluorescent probe: imaging endogenous hydrogen peroxide during an autophagy process induced by rapamycin