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| Beryllium Ion-Selective Phosphorescence Probes Based on 9-Crown-3 Ether Iridium Complexes |
| Author Name | Affiliation | E-mail | | PAN Miao | Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Ministry of Education, Institute of Molecular Engineering and Applied Chemistry, School of Metallurgy Engineering, Anhui University of Technology, Maanshan, Anhui 243002, China | | | HU Yuan-Yuan | Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Ministry of Education, Institute of Molecular Engineering and Applied Chemistry, School of Metallurgy Engineering, Anhui University of Technology, Maanshan, Anhui 243002, China | | | ZHAO Zhuo | Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Ministry of Education, Institute of Molecular Engineering and Applied Chemistry, School of Metallurgy Engineering, Anhui University of Technology, Maanshan, Anhui 243002, China | | | YAO Yong-Lin | Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Ministry of Education, Institute of Molecular Engineering and Applied Chemistry, School of Metallurgy Engineering, Anhui University of Technology, Maanshan, Anhui 243002, China | | | ZHOU Hui-Dong | Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Ministry of Education, Institute of Molecular Engineering and Applied Chemistry, School of Metallurgy Engineering, Anhui University of Technology, Maanshan, Anhui 243002, China | | | TONG Bi-Hai | Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Ministry of Education, Institute of Molecular Engineering and Applied Chemistry, School of Metallurgy Engineering, Anhui University of Technology, Maanshan, Anhui 243002, China | tongbihai@163.com | | ZHANG Qian-Feng | Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Ministry of Education, Institute of Molecular Engineering and Applied Chemistry, School of Metallurgy Engineering, Anhui University of Technology, Maanshan, Anhui 243002, China | 1665604075@qq.com |
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| Abstract: Ionic iridium complex[Ir(BTZ9C3)2(bpy)]PF6 (1) and neutral iridium complex[Ir(BTZ9C3)2(fppz)] (2) were synthesized with 4'-(2-benzothiazolyl)benzo-9-crown-3 ether(BTZ9C3) primary ligand and different ancillary ligands:2,2'-bipyridine(bpy) and 3-trifluoromethyl-5-(2'-pyridyl)-1,2-diazole(Hfppz). The structures of the complexes were characterized by NMR, high resolution mass spectrometry, and the single crystal structure of 1 was determined by X-ray structural analysis. All these complexes showed a strong Kelly phosphorescent emission. The photoluminescence spectra of complexes 1 and 2 in PMMA (1%(w/w)) showed emission maximum at 535 and 541 nm, respectively. Their quantum efficiencies were 10.8% and 45.0% and the luminescence lifetimes were 3.01 and 2.58 μs. By means of the cyclic voltammogram, the HOMO levels of complexes 1 and 2 were calculated to be -5.60 and -5.35 eV. Both complexes displayed a high selectivity for Be2+ among relevant metal ions, and exhibited luminescence enhancement effect in the presence of Be2+. The stoichiometric ratio of iridium complexes responding to Be2+ was determined to be 1:2, and the detection limit is down to 6.0 μmol·L-1. The ionic iridium complex 1 has good anti-disturbance, however the neutral iridium complex 2 is greatly interfered by Al3+. |
| Keywords: 9-crown-3 derivatives cyclometalated iridium(Ⅲ) complex Be2+ phosphorescence probe |
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| PAN Miao,HU Yuan-Yuan,ZHAO Zhuo,YAO Yong-Lin,ZHOU Hui-Dong,TONG Bi-Hai,ZHANG Qian-Feng.Beryllium Ion-Selective Phosphorescence Probes Based on 9-Crown-3 Ether Iridium Complexes[J].Chinese Journal of Inorganic Chemistry,2019,35(2):293-299. |
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