| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Wang, Lina
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (2/2 displayed)
Places of action
| Organizations | Location | People |
|---|
article
The Immobilisation and Reactivity of Fe(CN)63-/4- in an Intrinsically Microporous Polyamine (PIM-EA-TB)
Abstract
<p>Protonation of the molecularly rigid polymer of intrinsic microporosity PIM-EA-TB can be coupled to immobilisation of Fe(CN)<sub>6</sub><sup>3−/4−</sup> (as well as immobilisation of Prussian blue) into 1–2 nm diameter channels. The resulting films provide redox-active coatings on glassy carbon electrodes. Uptake, transport, and retention of Fe(CN)<sub>6</sub><sup>3−/4−</sup> in the microporous polymer are strongly pH dependent requiring protonation of the PIM-EA-TB (pK<sub>A</sub> ≈ 4). Both Fe(CN)<sub>6</sub><sup>4−</sup> and Fe(CN)<sub>6</sub><sup>3−</sup> can be immobilised, but Fe(CN)<sub>6</sub><sup>4−</sup> appears to bind tighter to the polymer backbone presumably via bridging protons. Loss of Fe(CN)<sub>6</sub><sup>3−/4−</sup> by leaching into the aqueous solution phase becomes significant only at pH > 9 and is likely to be associated with hydroxide anions directly entering the microporous structure to combine with protons. This and the interaction of Fe(CN)<sub>6</sub><sup>3−/4−</sup> and protons within the molecularly rigid PIM-EA-TB host are suggested to be responsible for retention and relatively slow leaching processes. Electrocatalysis with immobilised Fe(CN)<sub>6</sub><sup>3−/4−</sup> is demonstrated for the oxidation of ascorbic acid. [Figure not available: see fulltext.].</p>