Abstract Compared with other fluorescent probes, ratiometric fluorescence responses are more attractive because the ratio between the two emission intensities can be used to measure the analyte concentration and provide a built-in correction for environmental effects. A highly selective and sensitive ratiometric fluorescent probe for Fe 3+ was synthesized, which exhibits an enhanced fluorescence with a large red-shift in emission from 361 to 455 nm upon addition of Fe 3+ . The red-shift of the emission peak can be ascribed to the reformed orbital, and the increase of emission intensity may be ascribed to the inhibition of the rotation of C–C bonds between each two aromatic rings.

中文翻译：

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使用多苯基衍生物对 Fe3+ 进行高选择性比率荧光检测

摘要 与其他荧光探针相比，比率荧光响应更具吸引力，因为两种发射强度之间的比率可用于测量分析物浓度并提供对环境影响的内置校正。合成了一种高选择性和灵敏的 Fe 3+ 比率荧光探针，它在加入 Fe 3+ 后表现出增强的荧光，发射从 361 到 455 nm 有很大的红移。发射峰的红移可归因于重整轨道，发射强度的增加可归因于每两个芳环之间的 C-C 键旋转受到抑制。