A sulfur-free iridium(III) complex for highly selective and multi-signaling mercury(II)-chemosensors
作者： Hong-Tao Cao , Lei Ding , Guo-Gang Shan , Hai-Zhu Sun , Yong Wu
DOI: 10.1039/C5DT03129J
关键词:
摘要: A sulfur-free iridium(III) complex (pbi)2Ir(mtpy) (1) was successfully prepared and adopted as a Hg(II)-chemosensor with high selectivity sensitivity. Multi-signaling responses towards Hg(II) ions were observed by UV−vis absorption, phosphorescence electrochemistry measurements. With addition of ions, 1 presented quenched emission in its spectrum the detection limit low 2.5 × 10−7 M. Additionally, redox peak currents showed broad linear relationship concentration ranging from 0 to 500 μM, which beneficial for quantitative detection. Based on 1H NMR ESI-MS analyses, probing mechanism tentatively supposed be Hg2+-induced changes local environment 1. Such response process useful achieving simple effective well developing more chemosensors.
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