Abstract

The data on polymeric complexes of nickel with salen-type Schiff bases containing electron-withdrawing nitro groups in ligand’s aromatic fragments are acquired by an in situ technique based on collecting electron paramagnetic resonance spectra simultaneously with absorption spectra in the UV, visible, and near IR regions in the course of oxidation-reduction of a polymer film on the surface of an optically transparent electrode under conditions of cyclic voltammetry. Based on the combined analysis of spectroscopic and electrochemical data, it is shown that as the potential of the polymer-modified electrode shifts in the positive region, the different types of charge carriers successively appear in the system (phenoxyl radical cations, radical pairs, and dications). The results obtained suggest that the positive charge can be delocalized either between aromatic rings in monomer fragments or between fragments of neighboring polymer chains.

中文翻译：

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镍与含吸电子取代基的席夫碱的聚合物配合物中电荷载体的性质

抽象的

通过在收集电子顺磁共振光谱以及紫外，可见光和近红外吸收光谱的同时收集原位技术，获得了镍与配体芳族片段中含有吸电子硝基的萨伦型席夫碱的镍聚合物配合物的数据。在循环伏安法条件下，光学透明电极表面上的聚合物膜氧化还原过程中的区域。基于对光谱数据和电化学数据的综合分析，结果表明，随着聚合物修饰电极的电势在正区域移动，系统中会依次出现不同类型的电荷载流子（苯氧基自由基阳离子，自由基对和适应症）。