An efficient multichannel probe to detect anions in different media and its real application in human blood plasma
作者:Syed S. Razi、Rashid Ali、Priyanka Srivastava、Mohammad Shahid、Arvind Misra
DOI:10.1039/c4ra02388a
日期:——
A simple coumarin derived chromo and fluorogenic chemosensor has been synthesized and tested to detect anions in different medium. The designed chemosensor has shown a high colorimetric response for F− and AcO− ions in acetonitrile in which the color of solution changed from a yellow-green to red and orange respectively whereas, in aqueous medium the probe showed high fluorogenic response and selectively reacted with cyanide through a Michael type nucleophilic addition reaction in which a nonfluorescent (switched-off) color of the solution, “turn-on” to became fluorescent blue (switched-on). The multichannel mode of interaction between the probe and anions has been confirmed by absorption, emission, FT-IR, NMR, ESI-MS spectral data analysis. Moreover, the probe has shown high sensitivity to detect cyanide in a real sample, human blood plasma as well as on paper strips.
我们合成并测试了一种简单的香豆素衍生色荧光化学传感器,用于检测不同介质中的阴离子。所设计的化学传感器对乙腈中的 F- 和 AcO- 离子显示出很高的比色反应,溶液的颜色分别从黄绿色变为红色和橙色;而在水介质中,探针显示出很高的荧光反应,并通过迈克尔型亲核加成反应与氰化物发生选择性反应,溶液的非荧光颜色(关闭)"打开",变成荧光蓝色(打开)。探针与阴离子之间的多通道相互作用模式已通过吸收、发射、傅立叶变换红外光谱、核磁共振、ESI-MS 光谱数据分析得到证实。此外,该探针在实际样品、人体血浆和纸条中检测氰化物时显示出极高的灵敏度。