Mitk'El Santiago-Berrios - Layered Inorganic Materials as Redox Agents:Ferrocenium-Intercalated Zirconium Phosphate

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      Publication Details (including relevant citation   information):

      DOI: 10.1021/la7005309


      The direct intercalation reaction of ferrocene (bis(η5-cyclopentadienyl)iron(II), Fc) with a   highly hydrated layered zirconium phosphate (ZrP) resulted in the   formation of the ferrocenium ion (Fc+) within the ZrP material. The   Fc+-intercalated ZrP   material has an interlayer distance of 10.7 Å. The intercalated   material was used as an electron acceptor 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 absorption spectrum 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 dynamic quenching   rate constant kq is   2.2 × 108 M-1 s-1.

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