| 论文题目 | A Rhodamine-based Dual Chemosensor for the Simultaneous Detection of Fe3+ and Cu2+ |
| 作者 | 兰韬,王风贺(外),席兴军,成春文(外),雷武(外),夏明珠(外),王风云(外) |
| 年度 | 2016 |
| 发表/出版时间 | 2016/11/10 |
| 发表期刊/会议 | Analytical Sciences |
| 关键词 | Dual chemosensor, Fe3+, Cu2+, Rhodamine B |
| 摘要 | A Rhodamine-based dual chemosensor L1 for simultaneously detecting Fe3+ and Cu2+ was designed and synthesized. The spectroscopic properties of L1 were analyzed, and its recognition mechanism was speculated. We found that the addition of Fe3+ induced a great fluorescence enhancement, while Cu2+ induced a strong UV-Vis absorption enhancement. The results revealed that L1 was highly selective for recognizing Fe3+ and Cu2+ in UV-Vis spectroscopy in CH3OH–H2O (1/1, V/V, pH 7.2) with the interference of other metal ions. A good linear relationship between the fluorescence intensities of L1 and the concentration of Fe3+, as well as the UV-Vis absorption intensities of L1 and the concentration of Cu2+ was observed, respectively. The detection limit was 9.2×10-8 M (5.5 μg/L) for Fe3+ and 3.8×10-8 M (2.4 μg/L) for Cu2+, respectively. The detection capacity for targeted metal ions of Fe3+ and Cu2+ were studied, which are less than 5 min. Job’s plot method for L1 with Fe3+ and ESI-MS for L1 with Cu2+ indicated a 1:1 stoichiometry in the complex. The results may provide an effective strategy for the design of new dual chemosensors for the rapid detection of targeted metal ions. |