Disulfide-linked manganese mesoporphyrin derivatives separated by spacer methylene groups (Figure 1) were synthesized and then the porphyrin derivatives were assembled on a gold electrode. Cyclic voltammetry (CV) of the porphyrin monolayer on a gold electrode showed that one set of waves was clearly visible, corresponding to the consecutive monoelectronic reduction of the manganese porphyrin unit, depending upon the spacer methylene groups. Interestingly, a large positive-shift of the redox potential for the mesoporphyrin was observed due to fluorination of the porphyrin ring.
合成了由间隔亚甲基分隔的二
硫键连接的
锰中
卟啉衍
生物(图1),然后将
卟啉衍
生物组装在
金电极上。
金电极上
卟啉单层的循环伏安法(CV)显示,一组波清晰可见,对应于
锰卟啉单元的连续单电子还原,具体取决于间隔亚甲基。有趣的是,由于
卟啉环的
氟化,观察到中
卟啉的氧化还原电位发生很大的正向变化。