ABSTRACT Perimedine labelled rhodamine dye 1 has been designed and synthesised. Metal ion binding studies of 1 have been performed in CH3CN/H2O (3:1, v/v, 10 mM Tris-HCl buffer, pH = 6.90). Compound 1 senses multiple metal ions such as Al3+, Fe3+ and Fe2+ by exhibiting turn on fluorescence and colour change (colourless to pink) under different experimental conditions. Concentration variation distinguishes Al3+ from Fe3+ ion. At low concentration (c = 1 x 10−4 M), only Al3+ ion can exhibit turn on fluorescence with sharp colour change. Sensing of Fe2+ ion through turn on fluorescence and colour change has been possible via in situ oxidation by following Fenton’s reaction. Graphical abstract

中文翻译：

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Perimedine 连接的罗丹明染料在不同实验条件下对水性有机介质中 Al3+、Fe3+ 和 Fe2+ 离子的视觉传感

摘要 Perimedine 标记的罗丹明染料 1 已被设计和合成。1 的金属离子结合研究已在 CH3CN/H2O（3:1，v/v，10 mM Tris-HCl 缓冲液，pH = 6.90）中进行。化合物 1 通过在不同实验条件下显示开启荧光和颜色变化（无色至粉红色）来感应多种金属离子，例如 Al3+、Fe3+ 和 Fe2+。浓度变化将 Al3+ 与 Fe3+ 离子区分开来。在低浓度 (c = 1 x 10−4 M) 下，只有 Al3+ 离子可以显示出具有急剧颜色变化的荧光。通过跟随 Fenton 反应的原位氧化，可以通过开启荧光和颜色变化来感应 Fe2+ 离子。图形概要