College of Chemistry, Jilin University, Changchun, People's Republic of China.
The Second Hospital of Jilin University, Changchun, People's Republic of China.
Luminescence. 2020 Dec;35(8):1231-1237. doi: 10.1002/bio.3882. Epub 2020 Jun 5.
A fluorescent probe L-Cu based on quinoline, coumarin and Cu has been synthesized and characterized for hypochlorite determination. After copper ion was added to the solution of ligand L, the fluorescence quenching at 490 nm might result from a ligand-metal charge transfer (LMCT) process and its strong coordination ability for Cu . In the presence of hypochlorite, the structure of ligand L was destroyed to form 7-(diethylamino)-coumarin-3-carboxylic acid, and the fluorescence was restored at 460 nm. In this case, L-Cu complex could be used as a fluorescent probe to detect hypochlorite, with the advantages of rapid, selective, wide linear range and low detection limit.
基于喹啉、香豆素和铜的荧光探针 L-Cu 已被合成并用于次氯酸盐的测定。配体 L 的溶液中加入铜离子后，490nm 处的荧光猝灭可能是由于配体-金属电荷转移（LMCT）过程及其对 Cu 的强配位能力所致。在次氯酸盐存在下，配体 L 的结构被破坏，形成 7-(二乙氨基)-香豆素-3-羧酸，荧光在 460nm 处恢复。在这种情况下，L-Cu 配合物可用作检测次氯酸盐的荧光探针，具有快速、选择性、宽线性范围和低检测限的优点。
