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Role of the Supporting Electrolyte Ions and Additives on the Electron Transport Properties of Electrografted Films Bearing Ferrocenyl Moieties
ChemElectroChem ( IF 3.5 ) Pub Date : 2021-09-02 , DOI: 10.1002/celc.202101014 Felipe J Gonzalez-Bravo 1 , Daniel Enrique Ramírez-Chan 2 , Blanca R Díaz-Sánchez 3 , Rogelio Enrique Fragoso 4
ChemElectroChem ( IF 3.5 ) Pub Date : 2021-09-02 , DOI: 10.1002/celc.202101014 Felipe J Gonzalez-Bravo 1 , Daniel Enrique Ramírez-Chan 2 , Blanca R Díaz-Sánchez 3 , Rogelio Enrique Fragoso 4
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The electrochemical oxidation of 6-ferrocenylheptanoate was used to modify the surface of glassy carbon electrodes with thin films bearing ferrocene molecules. These films grow layer by layer and behave as surface redox catalyst during the electrografting. The electrografted films have a structure with pinholes or channels, whose existence was deduced from the redox behavior of the film in acetonitrile solution containing different supporting electrolytes and organic additives. The electron transport through this film requires the presence of the electrolyte anions in the film channels. However, the voltametric feature of the grafted films is sensitive to the electrolyte cation size. The supporting electrolyte anions inside the film channels stabilize the ferrocenium species during the film oxidation. However, the presence of the cations is required to keep the inner charge balance. The inclusion of both anions and cations inside the grafted film determines the surface coverage obtained from the voltammetric experiments.
中文翻译：
支持电解质离子和添加剂对带有二茂铁基部分的电接枝薄膜的电子传输特性的作用
6-二茂铁基庚酸酯的电化学氧化用于用带有二茂铁分子的薄膜修饰玻碳电极的表面。这些薄膜逐层生长，并在电接枝过程中充当表面氧化还原催化剂。电接枝薄膜具有针孔或通道结构，其存在是由薄膜在含有不同支持电解质和有机添加剂的乙腈溶液中的氧化还原行为推断出来的。通过该薄膜的电子传输需要薄膜通道中存在电解质阴离子。然而，接枝薄膜的伏安特性对电解质阳离子尺寸敏感。膜通道内的支持电解质阴离子在膜氧化过程中稳定二茂铁物种。然而，需要阳离子的存在来保持内部电荷平衡。接枝膜内包含阴离子和阳离子决定了从伏安实验中获得的表面覆盖率。
更新日期：2021-10-01
中文翻译：
支持电解质离子和添加剂对带有二茂铁基部分的电接枝薄膜的电子传输特性的作用
6-二茂铁基庚酸酯的电化学氧化用于用带有二茂铁分子的薄膜修饰玻碳电极的表面。这些薄膜逐层生长，并在电接枝过程中充当表面氧化还原催化剂。电接枝薄膜具有针孔或通道结构，其存在是由薄膜在含有不同支持电解质和有机添加剂的乙腈溶液中的氧化还原行为推断出来的。通过该薄膜的电子传输需要薄膜通道中存在电解质阴离子。然而，接枝薄膜的伏安特性对电解质阳离子尺寸敏感。膜通道内的支持电解质阴离子在膜氧化过程中稳定二茂铁物种。然而，需要阳离子的存在来保持内部电荷平衡。接枝膜内包含阴离子和阳离子决定了从伏安实验中获得的表面覆盖率。
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