School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China.
School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China.
Spectrochim Acta A Mol Biomol Spectrosc. 2019 May 5;214:7-13. doi: 10.1016/j.saa.2019.01.089. Epub 2019 Feb 1.
A new Schiff base derivative fluorescence-colorimetric chemosensor 2-hydroxy-5-[(2-hydroxy-1-naphthyl)methylideneamino]benzoic acid (HL), has been designed and synthesized. HL displayed high selectivity and sensitivity for detecting Cr, Cu, Fe and Al ions in DMF/HO (v/v = 1/1) solution. When Cr, Cu or Fe ions were added, the solution of HL in DMF/HO exhibited different color changes. While with the addition of Fe or Al ions, the solution of HL in DMF/HO displayed different fluorescence responses. The bonding modes and bonding ratios of HL and metal ions were explored by the Job's plot, H NMR titration, and electrospray ionization mass spectrometry (ESI-MS). The detection limits of HL with Cr, Cu, Feand Al ions were 3.37 × 10 M, 4.65 × 10 M, 3.58 × 10 M and 4.89 × 10 M, respectively.
一种新的席夫碱衍生物荧光比色化学传感器 2-羟基-5-[(2-羟基-1-萘基)亚甲基氨基]苯甲酸（HL）已被设计和合成。HL 在 DMF/HO（v/v = 1/1）溶液中对 Cr、Cu、Fe 和 Al 离子具有高选择性和灵敏度。当加入 Cr、Cu 或 Fe 离子时，HL 在 DMF/HO 中的溶液表现出不同的颜色变化。而当加入 Fe 或 Al 离子时，HL 在 DMF/HO 中的溶液表现出不同的荧光响应。通过 Job 的图谱、H NMR 滴定和电喷雾电离质谱（ESI-MS）探究了 HL 与金属离子的键合模式和键合比。HL 与 Cr、Cu、Fe 和 Al 离子的检测限分别为 3.37 × 10 M、4.65 × 10 M、3.58 × 10 M 和 4.89 × 10 M。
