Cheng Xiaohong, Zhang Rui, Sun Jinbo, Xu Ke, Li Wangnan
Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices, Hubei University of Arts and Science, Xiangyang, 441053, China.
School of Chemical Engineering, Hubei University of Arts and Science, Xiangyang, 441053, China.
J Fluoresc. 2025 Jan;35(1):89-97. doi: 10.1007/s10895-023-03492-w. Epub 2023 Nov 21.
Novel fluorescent probes were constructed for the convenient and rapid analysis of Cu ions, taking advantages of the the triphenylamine backbone as chromophore and acylhydrazone group as the Cu recognition site. Especially, probe T2 could act as a dual-channel probe towards Cu through both fluorescent and colorimetric method. Through the fluorescent method, the detection limit of probe T2 was calculated to be as low as 90 nmol/L and there was a good linear relationship between the intensity change and the concentration of Cu ions. By virtue of the two-phase liquid-liquid extraction method, probe T2 could be successfully applied in practical extraction and separation of Cu. Furthermore, by applying a "turn-off-turn-on" circle, compound T2 could act as a sensitive probe towards S anions through the indirect approach and the detection limit of complex T2-Cu for S anion was found to be 110 nmol/L.
利用三苯胺骨架作为发色团和酰腙基团作为铜识别位点，构建了用于方便快速分析铜离子的新型荧光探针。特别是，探针T2可以通过荧光和比色法作为对铜的双通道探针。通过荧光法，计算出探针T2的检测限低至90 nmol/L，强度变化与铜离子浓度之间存在良好的线性关系。借助两相液-液萃取法，探针T2可成功应用于铜的实际萃取和分离。此外，通过应用“关-开”循环，化合物T2可以通过间接方法作为对硫阴离子的灵敏探针，发现配合物T2-Cu对硫阴离子的检测限为110 nmol/L。
