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Optical spectroscopic studies on the complexation of stilbazolium dyes with a water soluble pillar[5]arene

机译:用水溶性柱的斯莱唑鎓染料络合的光学光谱研究[5]芳烃

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The host–guest interactions of a water soluble carboxylato-pillar[5]arene ( WPA5 ) and three stilbazolium dyes (containing 9-anthryl, 1-pyrenyl and 4-dimethylaminophenyl groups) were studied by UV-Vis and fluorescence spectroscopy giving a detailed description of the spectral changes. A different spectroscopic response was observed in each case, with the most significant result of 28-fold fluorescence enhancement and intense color change in the case of 4-dimethylaminostyryl- N -methylpyridinium iodide ( DAST , G3 ). In addition, a FID (fluorescence indicator displacement) system comprised of WPA5 and G3 was shown to detect paraquat by turn-off fluorescence in aqueous solution.
机译:通过UV-Vis和荧光光谱学研究水溶性羧酸氨基柱[5]芳烃[5]芳烃(WPA5)和三个斜氮吡喃染料(含有9-苯基,1-芘基和4-二甲基氨基苯基)的宿主 - 客体相互作用。光谱变化的描述。在每种情况下观察到不同的光谱响应,在4-二甲基氨基吡啶吡啶碘化物(DAST,G3)的情况下,在28倍的荧光增强和强烈变色的最显着结果。另外,显示由WPA5和G3组成的FID(荧光指示剂位移)系统通过水溶液中的截止荧光检测截止杀虫。

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