Projects per year
Abstract
Metal-organic framework (MOF) materials based on zinc(II) and aluminium(III) dicarboxylate frameworks with covalently attached ferrocene functional redox groups were synthesised by post-synthetic modification and investigated by voltammetry in aqueous and non-aqueous media. In the voltammetry experiments, ferrocene oxidation occurs in all cases, but chemically reversible and stable ferrocene oxidation without decay of the voltammetric response requires a "mild" dichloroethane solvent environment. The voltammetric response in this case is identified as "surface-confined" with fast surface-hopping of electrons and without affecting the bulk of MOF microcrystals. In aqueous media a more complex pH-dependent multi-stage redox process is observed associated with chemically irreversible bulk oxidation and disintegration of the MOF framework. A characteristic 30 mV per pH unit dependence of redox potentials is observed attributed to a "framework effect": the hydroxide-driven MOF framework dissolution.
Original language | English |
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Pages (from-to) | 1475-1480 |
Number of pages | 6 |
Journal | Dalton Transactions |
Volume | 41 |
Issue number | 5 |
DOIs | |
Publication status | Published - 2012 |
Fingerprint Dive into the research topics of 'Metal-organic frameworks post-synthetically modified with ferrocenyl groups: framework effects on redox processes and surface conduction'. Together they form a unique fingerprint.
Projects
- 1 Finished
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Nano-Integration of Metal-Organic Frameworks and Catalysis for the Uptake and Utilisation of CO2
Marken, F., Burrows, A., Cameron, P., Edler, K., Jones, M., Pascu, S. & Raithby, P.
Engineering and Physical Sciences Research Council
1/05/10 → 14/02/14
Project: Research council