Synthesis, Structure, Photophysics, Electrochemistry, and Ion-Binding Studies of Ruthenium(II) 1,10-Phenanthroline Complexes Containing Thia-, Selena-, and Aza-Crown Pendants

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• 作者：Mei-Jin Li ; Ben Wai-Kin Chu ; Nianyong Zhu ; Vivian Wing-Wah Yam
• 刊名：Inorganic Chemistry
• 出版年：2007
• 出版时间：February 5, 2007
• 年：2007
• 卷：46
• 期：3
• 页码：720 - 733
• 全文大小：324K
• 年卷期：v.46,no.3(February 5, 2007)
• ISSN：1520-510X

文摘

A series of ruthenium(II) diimine complexes containing thia-, selena- and aza-crowns derived from 1,10-phenanthrolinehave been synthesized and characterized, and their photophysics and electrochemistry were studied. Their interactionwith metal ions was investigated by UV-vis, luminescence, and ¹H NMR spectroscopy. The crystal structures of[Ru(bpy)₂(L1)](PF₆)₂, [Ru(bpy)₂(L2)](ClO₄)₂, [Ru(bpy)₂(L3)](ClO₄)₂, and [Ru(bpy)₂(L4)](ClO₄)₂ have been determined.The luminescence properties of [Ru(bpy)₂(L1)](ClO₄)₂ were found to be sensitive and selective toward the presenceof Hg²⁺ ions in an acetonitrile solution. The addition of alkaline-earth metal ions, Zn²⁺, Cd²⁺, and Hg²⁺ ions, to thesolution of [Ru(bpy)₂(L6)](ClO₄)₂ in acetonitrile gave rise to large changes in the UV-vis and emission spectra. Thebinding of metal ions to [Ru(bpy)₂(L6)](ClO₄)₂ was found to cause a strong enhancement in the emission intensitiesof the complex, with high specificity toward Hg²⁺ ions.