کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1304210 | 1498972 | 2012 | 5 صفحه PDF | دانلود رایگان |
A new terpyridine derivative ligand 4′-4-(1,2,4-triazol-1-yl)-phenyl-2,2′:6′,2″-terpyridine (L) was prepared and its metal complex [Zn(L)2](NO3)2·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 Co2 + and Ni2 + ions but not for metal ions such as Mg2 +, Pb2 +, Cu2 +, Fe2 +, In3 +, Zn2 +, Cd2 + and Fe3 +. Furthermore, EDTA (ethylene diamine tetraacetic acid) can selectively turn on the quenched fluorescence of complex 1 induced by Co2 + (“on–off–on” type sensor) but cannot turn on the one induced by Ni2 + (“on–off” type sensor).
A Zn(II) complex [Zn(L)2](NO3)2·H2O (1) with terpyridine derivative ligand 4′-4-(1,2,4-triazol-1-yl)-phenyl-2,2′:6′,2″-terpyridine (L) was found to be a “on–off–on” type fluorescence sensor for Co2 + and “on–off” type for Ni2 +.Figure optionsDownload as PowerPoint slideHighlights
► Zinc(II) complex with terpyridine derivative ligand.
► A selective fluorescence sensor.
► “on–off” type probe for cobalt(II) and nickel(II) ions.
Journal: Inorganic Chemistry Communications - Volume 18, April 2012, Pages 87–91