Department of Chemistry and Earth Sciences, Qatar University, Doha 2713, Qatar.
Sensors (Basel). 2018 Jul 10;18(7):2219. doi: 10.3390/s18072219.
(E)-2-((benzo[]thiazol-2-ylimino)methyl)-4-nitrophenol and (E)-2-(((6-methoxybenzo[]thiazol-2-yl)imino)methyl)-4-nitrophenol were synthesized efficiently under microwave conditions. The structures were confirmed using IR, ¹H NMR, and C NMR. UV-vis. Fluorescence investigations demonstrated that and are sensitive and selective sensors for detection of cyanide over all other anions SCN, AcO, N₃, H₂PO₄, H₂AsO₄, F, Cl, Br, and I in aqueous media. Cyanide induces colorimetric change from pale yellow to dark yellow and from transparent to pale yellow for and respectively. It enhances the absorption at wavelengths 385 nm and 425 nm of and 385 nm and 435 nm of . Acidic anions H₂PO₄ and H₂AsO₄ displayed significant interference with the interaction of cyanide and sensors and . Sensor has lower detection limit (LDL) 1 × 10 M, while has LDL 1.35 × 10 M.
（E）-2-（（苯并噻唑-2-基亚氨基）甲基）-4-硝基苯酚和（E）-2-（（6-甲氧基苯并噻唑-2-基）亚氨基）甲基）-4-硝基苯酚在微波条件下高效合成。结构通过 IR、1H NMR 和 C NMR 得到确认。UV-vis。荧光研究表明，和是在水介质中检测氰化物的敏感和选择性传感器，可检测到所有其他阴离子 SCN、AcO、N3、H2PO4、H2AsO4、F、Cl、Br 和 I。氰化物诱导从浅黄色到深黄色和从透明到浅黄色的比色变化对于和分别。它增强了在 385nm 和 425nm 处的吸收和在 385nm 和 435nm 处的吸收。酸性阴离子 H2PO4 和 H2AsO4 对氰化物和传感器与酸性阴离子的相互作用显示出显著的干扰。传感器的检测限（LDL）为 1×10M，而传感器的 LDL 为 1.35×10M。
