Zinc(II) complex with teirpyridine derivative ligand as 鈥?span style='font-style: italic'>on-off鈥?type fluorescent probe for cobalt(II) and nickel(II) ions

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• 作者：Peng Wang^a ; Zheng Li^a ; Gao-Chao Lv^a ; Hong-Ping Zhou^b ; Chao Hou^a ; Wei-Yin Sun^a ; ^{sunwy@nju.edu.cn} ; Yu-Peng Tian^b ;
• 关键词：Terpyridine derivative ; Zinc(II) complex ; Crystal structure ; Fluorescent sensor
• 刊名：Inorganic Chemistry Communications
• 出版年：2012
• 期刊代码：39_13877003
• 类别：ch
• 出版时间：April, 2012
• 卷：18
• 期：Complete
• 页码：87-91
• 文件大小：999 K

摘要

A new terpyridine derivative ligand 4鈥?4-(1,2,4-triazol-1-yl)-phenyl-2,2鈥?6鈥?2鈥?terpyridine (L) was prepared and its metal complex [Zn(L)₂](NO₃)₂路H₂O (1) was obtained by reaction of L with zinc(II) nitrate hexahydrate. The structure of the complex was determined by X-ray crystallography. The fluorescent spectral measurements revealed that complex 1 is a selective fluorescent sensor for Co^2 + and Ni^2 + ions but not for metal ions such as Mg^2 +, Pb^2 +, Cu^2 +, Fe^2 +, In^3 +, Zn^2 +, Cd^2 + and Fe^3 +. Furthermore, EDTA (ethylene diamine tetraacetic acid) can selectively turn on the quenched fluorescence of complex 1 induced by Co^2 + (鈥?em>on-off-on鈥?type sensor) but cannot turn on the one induced by Ni^2 + (鈥?em>on-off鈥?type sensor).