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首页> 外文期刊>Chemistry: A European journal >Covalent Modification of Glassy Carbon Surfaces by Using Electrochemical and Solid-Phase Synthetic Methodologies: Application to Bi- and Trifunctionalisation with Different Redox Centres
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Covalent Modification of Glassy Carbon Surfaces by Using Electrochemical and Solid-Phase Synthetic Methodologies: Application to Bi- and Trifunctionalisation with Different Redox Centres

机译：使用电化学和固相合成方法对玻璃碳表面进行共价修饰：在具有不同氧化还原中心的双官能团和三官能团中的应用

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摘要

Glassy carbon electrodes functionalised with two redox centres have been prepared by using electrochemical and solid-phase synthetic methodologies. Initially the individual coupling of anthraquinone, nitrobenzene and dihydroxybenzene to a glassy carbon electrode bearing an ethylenediamine linker was optimised by using different coupling agents and conditions. Bifunctionalisation was then carried out, either simultaneously, with a mixture of nitrobenzene and dihydroxybenzene, or sequentially, with anthraquinone then nitrobenzene and with anthraquinone then dihydroxybenzene.Characterisation of these lectrodes by cyclic voltammetry and differential pulse voltammetry clearly proved the attachment of the pairs of redox centres to the glassy carbon electrode. Their partial surface coverages can be controlled by varying the coupling agent or by controlling the substrate concentration during the solid-phase coupling process. Trifunctionalisation was also realised according to this methodology.
机译：通过使用电化学和固相合成方法已经制备了具有两个氧化还原中心功能的玻璃碳电极。最初，使用不同的偶联剂和条件优化了蒽醌，硝基苯和二羟基苯与带有乙二胺连接基的玻璃碳电极的单个偶联。然后用硝基苯和二羟基苯的混合物同时进行双官能化，或依次用蒽醌和硝基苯，蒽醌和二羟基苯进行双官能化。通过循环伏安法和差分脉冲伏安法对这些电极进行表征，清楚地证明了氧化还原对的连接以玻璃碳电极为中心。它们的部分表面覆盖率可以通过在固相偶联过程中改变偶联剂或控制底物浓度来控制。根据该方法也实现了三官能化。

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