INOR 198 |
| Gold electrode cast with multilayers of tetraoctylammonium bromide (TOAB) are utilized to study the electrochemical behavior of cytochrome c (cyt c). The reduction potential of cyt c on modified electrode is more negative (-0.1V vs. SCE) than that observed in the solution (+0.025V vs. SCE). This result may cause by the hydrophobic effect of the TOAB-modified surface. Immersing the water-insoluble TOAB modified Au-electrode into cyt c solution showed the shifted reduction potential peak immediately. The current of the reduction peak increases with the increasing immersing time. When HAuCl4 was added into TOAB solution, the change on cyt c seems more dramatic. It is possible of AuCl4- induced inverse micelles formation, and influence the cyt c. The conformational changes of cyt c have been investigated by circular dichroism (CD). The results show that the AuCl4-/TOAB causes cyt c precipitation and fractions of a-helix decrease. |
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Electrochemistry
7:00 PM-10:00 PM, Sunday, 10 September 2006 Moscone Center -- Hall D, Poster
Division of Inorganic Chemistry |