Synthesis, characterization and dc electrical conductivity of some oligmer mixed metal complexes

被引：15

作者：

El-Shekeil, A ^{[1
]}

Al-Khader, M ^{[1
]}

Abu-Bakr, AO ^{[1
]}

机构：

[1] Sanaa Univ, Fac Sci, Dept Chem, Sanaa, Yemen

来源：

SYNTHETIC METALS | 2004年 / 143卷 / 02期

关键词：

polyazomethine mixed metal complexes; dc electrical conductivity; Doping Electronic spectra and thermal analyses;

D O I：

10.1016/j.synthmet.2003.11.001

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The synthesis of the oligomer metal complexes was systematically carried out in three steps starting from condensing terephthaldehyde with 2,5-diamino-3,4-dicyanothiophene in DMF. Dithienylenephenylene (TBT) produced was complexed with copper acetate to give di-TBT copper complex [Cu(TBT)(2)]. This was complexed once more with a metal salt to give the 12-ring tri-metal oligomerM[Cu(TBT)(2)](2), where M is Co, Ni, or Cu. The presence of different transition metal ions allowed the comparison of the chemical and physical properties of the mixed metal complexes. The 12-ring mixed metal complexes were characterized through a comparative study of FTIR, electronic spectra and thermal analyses (TGA and DSC) in addition to the elemental analyses and metal content. A comparative study of the dc electrical conductivity in its intrinsic and 5% I-2-doped states with temperature variation in the range 300-500 K allowed tracing the action of the three different transition metals on the dc electrical conductivity of the mixed metal complexes. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：147 / 152

页数：6

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