Synthesis and characterization of a series of transition metal polypyridyl complexes and the pH-induced luminescence switch of Zn(II) and Ru(II) complexes

被引：9

作者：

Xu, Hui-Hua ^{[1
]}

Tao, Xian ^{[1
]}

Li, Yue-Qin ^{[1
]}

Shen, Ying-Zhong ^{[1
]}

Wei, Yan-Hong ^{[1
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Sch Mat Sci & Engn, Dept Appl Chem, Nanjing 210016, Jiangsu, Peoples R China

来源：

POLYHEDRON | 2012年 / 33卷 / 01期

关键词：

Imidazo[4,5-f][1,10]phenanthroline; Transition metal complex; UV-Vis absorption; Luminescence; Fluorescence; pH switch; ACID-BASE PROPERTIES; DNA-BINDING; RUTHENIUM(II) COMPLEX; SPECTROSCOPIC CHARACTERIZATION; LIGAND;

D O I：

10.1016/j.poly.2011.11.049

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Five new transition metal complexes, formulated as [Zn(DMBPIP)(3)](FF6)(2) (1), [Ni(DMBPIP)(3)](PF6)(2) (2), [Co(DMBPIP)(3)](FF6)(2) (3).[Fe(DMBPIP)(3)](PF6)(2) (4),[Ru(DMBPIP)(3)](PF6)(2)(5) {where DMBPIP = 2-(3',5'-dimethoxybiphenyl-4-yl)-1H-imidazo[4,5-f] [1,10]phenanthroline) were synthesized and characterized by means of elemental analysis, IR, H-1 NMR, C-13{H-1} NMR, standard spectroscopy techniques and cyclic voltammetry. The pH effects on UV-Vis absorption and luminescence spectra of the Zn(II) and Ru(II) complexes are studied, and ground- and excited-state ionization constants of the two complexes are derived. The two complexes acting as pH-induced "off-on-off" luminescence switches through protonation and deprotonation in buffer solution at room temperature are studied and discussed as well. (C) 2011 Elsevier Ltd. All rights

引用

页码：347 / 352

页数：6

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