کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1247251 | 969813 | 2007 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: A new fluorescent probe of rhodamine B derivative for the detection of copper ion A new fluorescent probe of rhodamine B derivative for the detection of copper ion](/preview/png/1247251.png)
A new fluorescent probe, rhodamine B hydrazide oxalamide (RBHO), which shows very weak fluorescence, was synthesized, and its fluorescence could be substantially enhanced by the addition of copper ion. The probe shows a high selectivity and sensitivity to copper ion by forming a 1:1 complex in acetonitrile, and the chelating is reversible. Limit of detection for copper ion in acetonitrile was found to be 3.7 × 10−8 mol L−1. It was also found that copper ion could catalyze the hydrolysis of the probe in 50% (v/v) buffered (10 mM Tris–HCl, pH 7.0) water/acetonitrile giving a highly fluorescent product, and the fluorescence detection of copper ion was developed in this neutral buffered media with a detection limit of 6.4 × 10−7 mol L−1. Determination of copper ion in water and synthetic samples in the presence of different interfering metal ions was successfully carried out with the new probe RBHO.
Journal: Talanta - Volume 72, Issue 5, 31 July 2007, Pages 1717–1722