Abstract
The electrochemical behavior of trimetallic nitride clusterfullerene (Sc3N@C78) embedded in films of the cationic surfactant didodecyldimethylammonium bromide (DDAB) on glassy carbon (GC) electrodes in aqueous solution was investigated. Four pairs of reversible redox peaks were observed in the potential range between +0.6 and −0.9 V vs. SCE. Different to the electrochemistry of pristine Sc3N@C78 in organic solution, the first reduction is a one-electron rather than simultaneous two-electron process because of the strong binding between DDA+ and the monoanion of Sc3N@C78. The generated radial monoanion, dianion and trianion of Sc3N@C78 are stable during continuous potential cycling, while some chemical reactions take place when the third anion is further reduced in the films. The cyclic voltammograms of Sc3N@C78/DDAB films checked at different temperatures pointed to strong temperature dependence. The electrochemical processes were also measured in different electrolytes, which showed pronounced anionic dependence and no cathodic dependence on either the cation or anions present. A possible electron-transfer mechanism of a Sc3N@C78/DDAB film was presented.
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This work is financially supported by National Natural Science Foundation of China (20473014, 20773015), the Major State Basic Research Development Programs (2004CB719903) and NNSFC-RGC administrated by the UGC of Hong Kong (N_HKUST604/04).
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Zhao, M., Zhang, L., Chen, N. et al. Electrochemistry of Sc3N@C78 embedded in didodecyldimethylammonium bromide films in aqueous solution. Microchim Acta 165, 45–52 (2009). https://doi.org/10.1007/s00604-008-0095-1
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DOI: https://doi.org/10.1007/s00604-008-0095-1