The Tunable Luminescence of Ruthenium(II) Complexes Containing Different Tetrazolate Ligands |
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| Authors: | Hong-Rui Zhang Yun-Xia Zhang Jing Xiang |
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| Institution: | 1. College of Agronomy, Henan Agricultural University, 450002 Zhengzhou, P. R. China;2. College of Life Science, Zhengzhou Normal University, 450044 Zhengzhou, P. R. China;3. College of Chemistry and Environmental Engineering, Yangtze University, 434020 Jingzhou, HuBei, P. R. China |
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| Abstract: | Three luminescent mononuclear RuII compounds, RuII(bpy)2( L1 )](BF4) ( 1 ), RuII(bpy)2( L2 )](BF4) ( 2 ), and the neutral compound RuII(bpy)2( L3 )] ( 3 ), were obtained, by treatment of RuII(bpy)2Cl2] with the tetrazolate (tz)-containing ligands L1 – L3 . All the compounds were well characterized by IR, UV/Vis, and 1H NMR and their redox properties were also investigated by cyclic voltammogram. The crystal structure of 3 was determined by X-ray crystallography and it clearly shows that the RuII ion is octahedrally coordinated by two bpy ligands and a deprotonated L3 ligand. After introduction of these tz ligands, 1 – 3 are more sensitive towards the change of micro-environment of solvents as compared with that of RuII(bpy)3]2+. This effect is most obvious in 3 , since it contains a 2– ligand L3 . The slight modification of diimine ligand make these complexes have potential applications as sensors. |
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| Keywords: | Tetrazole Ruthenium Luminescent properties Solvatochromism |
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