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1,8-Naphthyridine and 8-hydroxyquinoline modified Rhodamine B derivatives: “Turn-on” fluorescent and colorimetric sensors for Al3+ and Cu2+
Dyes and Pigments ( IF 4.1 ) Pub Date : 2013-08-06 , DOI: 10.1016/j.dyepig.2013.07.030
Mingming Yu , Ruili Yuan , Caixia Shi , Wan Zhou , Liuhe Wei , Zhanxian Li

Based on Rhodamine B, two Al3+/Cu2+-selective chemosensors were synthesized, which display a high selectivity for Al3+ and Cu2+ among environmentally and biologically relevant metal ions. A 1,8-Naphthyridine modified rhodamine derivative can detect Al3+ in ethanol with off–on fluorescence behavior, and detect Cu2+ in aqueous solution with colorimetric method. The 8-Hydroxyquinoline-based rhodamine sensor can detect Al3+ in ethanol with both off–on fluorescence and colorimetric methods. The detection mechanism involves a ring-opening process as a consequence of metal complex formation. Job's plots and a time-of-flight mass spectral study indicated that each chemosensor chelated Al3+/Cu2+ with 1:1 stoichiometry. The binding of the chemosensors and Al3+/Cu2+ is chemically reversible by the addition of F/EDTA solution, respectively.



中文翻译:

1,8-萘啶和8-羟基喹啉修饰的若丹明B衍生物:用于Al 3+和Cu 2+的“开启”荧光和比色传感器

基于罗丹明B,合成了两个Al 3+ / Cu 2+选择性化学传感器,在环境和生物相关的金属离子中,Al 3+和Cu 2+具有很高的选择性。1,8-萘啶修饰的若丹明衍生物可以检测乙醇中的Al 3+,具有不连续的荧光特性,并且可以使用比色法检测水溶液中的Cu 2+。基于8-羟基喹啉的若丹明传感器可以检测Al 3+在乙醇中使用关闭式荧光法和比色法。由于形成金属络合物,检测机制涉及开环过程。Job的图和飞行时间质谱研究表明,每个化学传感器都以1:1的化学计量比螯合了Al 3+ / Cu 2+。该化学传感器的结合和Al 3+ /铜2+在化学上是可逆通过添加的F - / EDTA溶液,分别。

更新日期:2013-08-06
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