Layered Inorganic Materials as Redox Agents: Ferrocenium-Intercalated Zirconium Phosphate
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- 作者：Mitk'El B. Santiago ; Chasterie Declet-Flores ; Agustí ; n Dí ; az ; Meredith M. Vé ; lez ; Myrna Zoé ; Bosques ; Yannis Sanakis ; Jorge L. Coló ; n
- 刊名：Langmuir
- 出版年：2007
- 出版时间：July 3, 2007
- 年：2007
- 卷：23
- 期：14
- 页码：7810 - 7817
- 全文大小：284K
- 年卷期：v.23,no.14(July 3, 2007)
- ISSN：1520-5827
文摘
The direct intercalation reaction of ferrocene (bis(
5-cyclopentadienyl)iron(II), Fc) with a highly hydrated layeredzirconium phosphate (ZrP) resulted in the formation of the ferrocenium ion (Fc+) within the ZrP material. TheFc+-intercalated ZrP material has an interlayer distance of 10.7 Å. The intercalated material was used as an electronacceptor for the oxidation of both ferro-cytochrome c and the excited state of tris(2,2'-bipyridine)ruthenium(II) ([Ru(bpy)3]2+). Upon contact of the material with a 1.5 × 10-5 M solution of ferro-cytochrome c, the UV-vis absorptionspectrum shows the successful formation of ferri-cytochrome c. Luminescence spectroscopy shows that the Fc+-intercalated ZrP material quenches the luminescence of [Ru(bpy)3]2+. The excited-state quenching mechanism of[Ru(bpy)3]2+* by Fc+-intercalated ZrP follows a dynamic plus sphere of action model. The second-order dynamicquenching rate constant kq is 2.2 × 108 M-1 s-1.
5-cyclopentadienyl)iron(II), Fc) with a highly hydrated layeredzirconium phosphate (ZrP) resulted in the formation of the ferrocenium ion (Fc+) within the ZrP material. TheFc+-intercalated ZrP material has an interlayer distance of 10.7 Å. The intercalated material was used as an electronacceptor for the oxidation of both ferro-cytochrome c and the excited state of tris(2,2'-bipyridine)ruthenium(II) ([Ru(bpy)3]2+). Upon contact of the material with a 1.5 × 10-5 M solution of ferro-cytochrome c, the UV-vis absorptionspectrum shows the successful formation of ferri-cytochrome c. Luminescence spectroscopy shows that the Fc+-intercalated ZrP material quenches the luminescence of [Ru(bpy)3]2+. The excited-state quenching mechanism of[Ru(bpy)3]2+* by Fc+-intercalated ZrP follows a dynamic plus sphere of action model. The second-order dynamicquenching rate constant kq is 2.2 × 108 M-1 s-1.