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Synthesis, characterization, and DC electrical conductivity of some oligomer metal complexes

机译:一些低聚物金属配合物的合成,表征和直流电导率

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The synthesis of the oligomer metal complexes was carried out systematically starting from condensing terephthaldehyde with 2,5-diamino-3,4-dicyanothiophene in DNIF. The dithienylenephenylene (di-TBT) oligomer produced was complexed with the metal salts of Fe, Co, Ni, Cu, Zn, Cd, or Hg to give di-TBT metal complex [M(TBT)(2)]. For comparison, the metal ion in the complex was substituted with a phenylene ring by reacting terephthaldehyde with thienylenephenylene (TBT) to get the seven ring product B(TBT)(2). The presence of different transition metals and B(TBT)(2) allowed the comparison of the chemical and physical properties. These six ring metal complexes were characterized through the study of FTIR and electronic spectra in addition to the elemental analyses and metal content. A comparative study of DC electrical conductivity of the intrinsic and 5% I-2 doped materials with temperature variation in the range 300-500 K allowed tracing the action of the different transition metals and phenylene ring on the DC electrical conductivity.
机译:低聚物金属配合物的合成从在DNIF中将对苯二甲醛与2,5-二氨基-3,4-二氰基噻吩缩合开始系统地进行。将产生的二噻吩基亚苯基(di-TBT)低聚物与Fe,Co,Ni,Cu,Zn,Cd或Hg的金属盐络合,得到di-TBT金属络合物[M(TBT)(2)]。为了进行比较,通过使对苯二甲醛与亚噻吩基亚苯基(TBT)反应,将络合物中的金属离子替换为亚苯基环,得到七个环的产物B(TBT)(2)。不同过渡金属和B(TBT)(2)的存在允许对化学和物理性质进行比较。除元素分析和金属含量外,还通过研究FTIR和电子光谱对这六种环状金属配合物进行了表征。对本征和5%I-2掺杂材料的直流电导率进行比较研究,温度变化在300-500 K范围内,可以追踪不同过渡金属和亚苯基环对直流电导率的作用。

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