Xu Jiangchao, Zhang Liyan, Shi Yusheng, Liu Chun
State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Linggong Road 2, Dalian 116024, China.
Sensors (Basel). 2024 Jun 22;24(13):4074. doi: 10.3390/s24134074.
Based on the electron-deficient property of picric acid (PA), two neutral Ir(III) complexes and modified with the electron-rich carbazolyl groups were synthesized and characterized. Both and exhibit aggregation-induced phosphorescence emission (AIPE) properties in THF/HO. Among them, is extremely sensitive for detecting PA with a limit of detection of 0.15 μM in THF/HO. Furthermore, the selectivity for PA is significantly higher compared to other analytes, enabling the efficient detection of PA in four common water samples. The density functional theory calculations and the spectroscopic results confirm that the sensing mechanism is photo-induced electron transfer (PET).
基于苦味酸（PA）的缺电子特性，合成并表征了两种用富电子咔唑基团修饰的中性铱（III）配合物 和 。 和 在四氢呋喃/水（THF/HO）中均表现出聚集诱导磷光发射（AIPE）特性。其中， 在THF/HO中对PA的检测极为灵敏，检测限为0.15 μM。此外，与其他分析物相比，其对PA的选择性显著更高，能够在四种常见水样中高效检测PA。密度泛函理论计算和光谱结果证实传感机制为光诱导电子转移（PET）。
