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Redox and optically active carbohelicene layers prepared by potentiodynamic polymerization
Electrochemistry Communications ( IF 4.7 ) Pub Date : 2020-02-19 , DOI: 10.1016/j.elecom.2020.106689
Jan Hrbac , Vit Pavelka , Jeanne Crassous , Jaroslav Zadny , Ladislav Fekete , Jan Pokorny , Petr Vanysek , Jan Storch , Jan Vacek

This short paper describes the preparation of thin layers based on carbohelicenes, which are inherently chiral polyaromatics existing in the enantiomeric forms P and M. Specifically, [5]-, [6]- and [7]helicene were subjected to redox cycling between –1.5 and 1.5 V vs. ferrocene/ferrocenium at a scan rate of 10 V/s. This way, enantiopure layers exhibiting redox activity were formed on the surfaces of the glassy carbon and ITO electrodes under anoxic and non-aqueous conditions. The properties of the prepared polymer layers were investigated using electrochemistry with Fe/Ru redox probes, circular dischroism, AFM, impedance measurement and Raman spectroscopy. With [6]helicene, the suggested electropolymerization procedure thus represents a proof-of-concept for the preparation of chiral carbonaceous surfaces.



中文翻译:

通过电位动力聚合制备氧化还原和旋光碳硼碳烯层

这篇简短的论文描述了基于碳螺旋烯的薄层的制备方法,这些化合物是对映体形式P和M固有的手性聚芳族化合物。具体来说,[5]-,[6]-和[7]]烯在以下位置进行了氧化还原循环: 1.5和1.5伏VS。二茂铁/二茂铁,扫描速率为10 V / s。这样,在缺氧和非水条件下,在玻璃碳和ITO电极的表面上形成了具有氧化还原活性的对映纯层。使用电化学法对Fe / Ru氧化还原探针,圆离散,AFM,阻抗测量和拉曼光谱进行了研究,研究了制备的聚合物层的性能。因此,对于[6]螺旋烯,建议的电聚合程序代表了制备手性碳质表面的概念证明。

更新日期:2020-02-20
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