Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, Department of Chemistry, Northwest University, Xi'an, 710069, China.
J Fluoresc. 2010 Jul;20(4):851-6. doi: 10.1007/s10895-010-0628-y. Epub 2010 Feb 25.
A coumarin-based fluorescent chemosensor 1 for Zn(2+) was designed and synthesized. Compound 1 exhibits lower background fluorescence due to intramolecular photoinduced electron transfer. However, upon mixing with Zn(2+) in 30% (v/v) aqueous ethanol, a "turn-on" fluorescence emission is observed. The fluorescence emission increases linearly with Zn(2+) concentration in the range 0.5-10 micromol L(-1) with a detection limit of 0.29 micromol L(-1). No remarkable emission enhancement was, however, observed for other metal ions. The proposed chemosensor was applied to the determination of Zn(2+) in water samples with satisfactory results.
一种基于香豆素的荧光化学传感器 1 被设计并合成用于检测 Zn(2+)。由于分子内光诱导电子转移，化合物 1 显示出较低的背景荧光。然而，当与 Zn(2+)在 30%（v/v）乙醇水溶液中混合时，观察到“开启”的荧光发射。荧光发射强度随 Zn(2+)浓度在 0.5-10 微摩尔/升范围内呈线性增加，检测限为 0.29 微摩尔/升。然而，对于其他金属离子，没有观察到显著的发射增强。该化学传感器被应用于水样中 Zn(2+)的测定，结果令人满意。
