A Chemosensor Bearing Sulfonyl Azide Moieties for Selective Chromo-Fluorogenic Hydrogen Sulfide Recognition in Aqueous Media and in Living Cells
作者:Luis E. Santos-Figueroa、Cristina de laTorre、Sameh El Sayed、Félix Sancenón、Ramón Martínez-Máñez、Ana M. Costero、Salvador Gil、Margarita Parra
DOI:10.1002/ejoc.201301514
日期:2014.3
A simple chemodosimeter based on a sulfonyl azide dye (1-Az), which displayed a highly selective response toward hydrogen sulfide anion in mixed aqueous media, was synthesised and characterised. Addition of hydrogen sulfide to acetonitrile/HEPES 1:1 solutions of 1-Az induced a clear colour change from red-orange to yellow, which was easily detected by the naked eye, and by an enhancement in the emission
合成并表征了一种基于磺酰叠氮化物染料 (1-Az) 的简单化学剂量计,该染料对混合水性介质中的硫化氢阴离子显示出高度选择性响应。将硫化氢添加到 1-Az 的乙腈/HEPES 1:1 溶液中会引起明显的颜色变化,从红橙色变为黄色,这很容易被肉眼检测到,并且发射强度会增强。其他常见的阴离子、含硫醇的生物分子和氧化剂不会在探针中引起任何明显的颜色或荧光调制。化学剂量计还显示出良好的灵敏度,使用 UV/Vis 或荧光测量的检测限分别为 11.91 和 0.63 μM。此外,1-Az 可用于微摩尔浓度的细胞内 HS 的实时荧光成像。