基于阳离子交换反应的配合物、量子点和 金属有机骨架化合物荧光化学传感器

Fluorescentmetal ion chemosensors via cation exchange reactions of complexes, quantumdots, and metal-organic frameworks

Jinghui Cheng, Xiangge Zhou, and Haifeng Xiang*

Analyst, 2015, 140, 7082–7115.

Due to their wide range of applications and biological significances, fluorescent sensorshave been an active research area in the past a few years. In the present review, recent research developments towards fluorescent chemosensors that detect metal ions via cation exchange reactions (transmetalation, metaldisplacement, or metal exchange reactions) of complexes, quantum dots, and metal-organicframeworks are described. These complex-based chemosensors might have a much better selectivity than the corresponding free ligands/receptors because of the shielding function of the filled-in metal ions. Moreover, not only the chemical structure of the ligands/receptors but also the identity of the central metalions have a tremendous impact on the sensing performances. Therefore, sensingvia cation exchange reactions potentially provides a new, simple, and powerful way to design fluorescent chemosensors.