Thin-layer electrochemistry of ferrocenylbenzene derivatives : Intramolecular electronic communication
Thin-layer electrochemistry of ferrocenylbenzene derivatives : Intramolecular electronic communication
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DOI：
10.1016/j.electacta.2008.05.043
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发表时间：
2008-11
影响因子：
6.6
通讯作者：
Michael C. P. Wang;Yunchao Li;N. Merbouh;Hua-Zhong Yu
中科院分区：
文献类型：
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作者：
Michael C. P. Wang;Yunchao Li;N. Merbouh;Hua-Zhong Yu
合成了3种芳基二茂铁衍生物：二茂铁基苯（MFcB）、1，3-双二茂铁基苯（DFcB）和1，3，5-三二茂铁基苯（TFcB），并利用薄层循环伏安法（CV）和微分脉冲伏安法（DPV）系统地研究了它们的氧化还原性质.在传统的CV测量，只产生一对氧化还原波的所有三种化合物，薄层技术之间的多步电子转移过程的DFcB和TFcB的区别。特别是，两个和三对对称峰，分别观察到，当CV曲线记录在石墨电极涂有DFcB-含有和TFcB-含有硝基苯薄膜和浸泡在高氯酸钠水溶液中。这些结果表明，连接到苯环的间位的二茂铁基部分彼此电子通信，作为其不同的面对面取向的结果。
Three arylferrocene derivatives, ferrocenylbenzene (MFcB), 1,3-diferrocenylbenzene (DFcB), and 1,3,5-triferrocenylbenzene (TFcB), were prepared and their redox properties systematically explored by thin-layer cyclic voltammetry (CV) and differential-pulse voltammetry (DPV). In contrast to conventional CV measurements that produced only a single pair of redox waves for all three compounds, the thin-layer technique discriminated between the multistep electron-transfer processes of DFcB and TFcB. In particular, two and three pairs of symmetric peaks were observed, respectively, when CV curves were recorded at a graphite electrode coated with a DFcB-containing and a TFcB-containing thin film of nitrobenzene and immersed in aqueous sodium perchlorate solution. These results demonstrate that the ferrocenyl moieties attached to the meta-positions of a benzene ring communicate electronically with each other, as a result of their distinct face-to-face orientations.