含硫杂、硒杂和氮杂冠醚侧基的钌（II）1,10-菲咯啉配合物的合成、结构、光物理、电化学及离子结合研究

Synthesis, structure, photophysics, electrochemistry, and ion-binding studies of ruthenium(II) 1,10-phenanthroline complexes containing thia-, selena-, and aza-crown pendants.

作者信息

Li Mei-Jin, Chu Ben Wai-Kin, Zhu Nianyong, Yam Vivian Wing-Wah

机构信息

Open Laboratory of Chemical Biology of the Institute of Molecular Technology for Drug Discovery and Synthesis, Department of Chemistry, The University of Hong Kong, People's Republic of China.

出版信息

Inorg Chem. 2007 Feb 5;46(3):720-33. doi: 10.1021/ic061507z.

DOI:10.1021/ic061507z

PMID:17257013

Abstract

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

摘要

合成并表征了一系列含有源自1,10-菲咯啉的硫杂、硒杂和氮杂冠醚的钌（II）二亚胺配合物，并研究了它们的光物理和电化学性质。通过紫外可见光谱、发光光谱和1H NMR光谱研究了它们与金属离子的相互作用。测定了Ru(bpy)2(L1)2、Ru(bpy)2(L2)2、Ru(bpy)2(L3)2和Ru(bpy)2(L4)2的晶体结构。发现Ru(bpy)2(L1)2在乙腈溶液中对Hg2+离子的存在具有灵敏且选择性的发光性质。向Ru(bpy)2(L6)2的乙腈溶液中加入碱土金属离子、Zn2+、Cd2+和Hg2+离子，会导致紫外可见光谱和发射光谱发生很大变化。发现金属离子与Ru(bpy)2(L6)2的结合会使配合物的发射强度强烈增强，对Hg2+离子具有高特异性。