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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Investigations on the electronic effects of the peripheral 4 '-group on 5-(4 '- substituted)phenylazo-8-hydroxyquinoline ligands: zinc and aluminium complexes
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Investigations on the electronic effects of the peripheral 4 '-group on 5-(4 '- substituted)phenylazo-8-hydroxyquinoline ligands: zinc and aluminium complexes

机译：外围4'-基团对5-（4'-取代）苯基偶氮8-羟基喹啉配体的电子效应的研究：锌和铝配合物

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摘要

A new series of 5-(4'-substituted)phenylazo-8-hydroxyquinolines (H[L-R]; R=N(CH3)(2), I, C2H5, II, n-C4H9, III, C(CH3)(3), IV, H, V and F, VI) has been prepared and the corresponding Zn[L-R](2) (1a-6a) and Al[L-R](3) (1b-6b) complexes successfully synthesized. These compounds have been studied in order to design new molecular materials with enhanced electron transport properties. The obtained species have been extensively characterized by absorption and emission spectra and by cyclic voltammetric measurements. Experimental and computational results show that the Zn[L-N(CH3)(2)].2H(2)O (1a) and Al[L-N(CH3)(2)] (1b) complexes only feature luminescence (at 620 and 600 nm), respectively. The unique effects, which are induced by the N=N-C6H4-N(CH3)(2) group, are further proved by a reversible electron transfer process detected by cyclic voltammetry. These outcomes, discussed on the basis of theoretical calculations performed on the {H[L-N(CH3)(2)]}-, H[L-N(CH3)(2)] and {H[L-N(CH3)(2)]}(+) species, suggest that metal complexes formed by 5-(4'-N,N-dimethylamino)phenylazo-8-hydroxyquinoline should be considered as electron transport materials suitable for applications in photonic devices.
机译：一系列新的5-（4'-取代）苯基偶氮-8-羟基喹啉（H [LR]; R = N（CH3）（2），I，C2H5，II，n-C4H9，III，C（CH3）（ 3）制备了IV，H，V和F，VI），并成功合成了相应的Zn [LR]（2）（1a-6a）和Al [LR]（3）（1b-6b）配合物。为了设计具有增强的电子传输性能的新型分子材料，已经对这些化合物进行了研究。所获得的物质已通过吸收光谱和发射光谱以及循环伏安法进行了广泛表征。实验和计算结果表明，Zn [LN（CH3）（2）]。2H（2）O（1a）和Al [LN（CH3）（2）]（1b）配合物仅具有发光特性（在620和600 nm下） ）， 分别。由N = N-C6H4-N（CH3）（2）基团诱导的独特效应通过循环伏安法检测到的可逆电子转移过程进一步得到证明。这些结果在{H [LN（CH3）（2）]}-，H [LN（CH3）（2）]和{H [LN（CH3）（2）]}进行的理论计算的基础上进行了讨论（+）物种表明，应将由5-（4'-N，N-二甲基氨基）苯基偶氮8-羟基喹啉形成的金属络合物视为适合在光子器件中应用的电子传输材料。

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