摘要/Abstract
一种基于半萘基染料的新型比色和长波长荧光探针SR被设计与合成.该探针基于二硝基苯醚的水解反应导致独特的螺环的关-开机理.荧光强度值（635 nm）和紫外吸光度值（590 nm）与H2S的浓度（2.00~10.00 μmol/L）呈现良好的线性关系，检测限分别为0.50和1.00 μmol/L.离子干扰实验显示探针SR具有良好的抗干扰能力，并能够应用于复杂体系中的H2S检测.同时，该探针进一步应用于滤纸、凝胶和Hela细胞中H2S的快速和有效检测，该工作进一步拓宽了荧光探针对化学和环境中H2S进行检测的应用范围.
关键词: 长波长, 荧光, 凝胶, 硫化氢, 探针
A novel colorimetric and long-wavelength fluorescent probe (SR) based on seminaphthorhodafluor dye was designed and synthesized, which was used to detect H2S through the thiolysis reaction of dinitrophenyl ether and unique OFF-ON mechanism based on the spiro-ring of probe SR. The fluorescent intensity (635 nm) and absorbance (590 nm) changes exhibited an excellent linear relationship with the H2S concentration ranging from 2.00 to 10.00 μmol/L and the detection limits were 0.50 and 1.00 μmol/L, respectively. Ions interference experiments showed that probe SR had an excellent anti-interference ability and could be used to detect H2S in complex systems. The probe SR was further exploited for filter paper, hydrogel and Hela cells for the rapid and convenient detection of H2S, which extended the applications of fluorescent probes for the detection of H2S in chemistry and the environment.
Key words: long-wavelength, fluorescence, hydrogel, H2S, probe
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