期刊
INORGANIC CHEMISTRY
卷 50, 期 13, 页码 5969-5977出版社
AMER CHEMICAL SOC
DOI: 10.1021/ic102481x
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资金
- National Natural Science Funds for Distinguished Young Scholars [20825101]
- National Natural Science Foundation of China [91027004, 50803028, 20804019]
- Shanghai Sci. Tech. Comm. [10431903100]
- Shanghai Leading Academic Discipline Project [IRT0911, B108]
Phosphorescent iridium(III) complexes have been attracting increasing attention in applications as luminescent chemosensors. However, no instance of an iridium(III) complex being used as a molecular logic gate has hitherto been reported. In the present study, two iridium(III) complexes, [Ir(ppy)(2)(PBT)] and [Ir(ppy)(2)(PBO)], have been synthesized (PBT, 2-(2-Hydroxyphenyl)-benzothiazole; PBO, 2-(2-hydroxyphenyl)-benzoxazole), and their chemical structures have been characterized by single-crystal X-ray analysis. Theoretical calculations and detailed studies of the photophysical and electrochemical properties of these two complexes have shown that the N boolean AND O ligands dominate their luminescence emission properties. Moreover, [Ir(ppy)(2)(PBT)], containing a sulfur atom in the N boolean AND O ligand, can serve as a highly selective chemodosimeter for Hg2+ with ratiometric and naked-eye detection, which is associated with the dissociation of the N boolean AND O ligand PBT from the complex. Furthermore, complex [Ir(ppy)(2)(PBT)] has been further developed as an AND and INHIBIT logic gate with Hg2+ and histidine as inputs.
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