| 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 |
|
Edler, Karen J.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (18/18 displayed)
- 2023Nanostructure in Amphiphile-Based Deep Eutectic Solventscitations
- 2023The effect of polymer end-group on the formation of styrene – maleic acid lipid particles (SMALPs)citations
- 2022Neutron Diffraction Study of Indole Solvation in Deep Eutectic Systems of Choline Chloride, Malic Acid, and Watercitations
- 2022Comparison of Cyclic and Linear Poly(lactide)s Using Small-Angle Neutron Scattering
- 2021Structural Evolution of Iron Forming Iron Oxide in a Deep Eutectic-Solvothermal Reactioncitations
- 2021Self-assembly of ionic and non-ionic surfactants in type IV cerium nitrate and urea based deep eutectic solventcitations
- 2020Mesoporous silica formation mechanisms probed using combined Spin-Echo Modulated Small Angle Neutron Scattering (SEMSANS) and Small Angle Neutron Scattering (SANS)citations
- 2019Structure and properties of ‘Type IV’ lanthanide nitrate hydrate:urea deep eutectic solventscitations
- 2019An introduction to classical molecular dynamics simulation for experimental scattering userscitations
- 2016Atomistic modelling of scattering data in the ollaborative Computational Project for Small Angle Scattering (CCP-SAS)citations
- 2016Atomistic modelling of scattering data in the ollaborative Computational Project for Small Angle Scattering (CCP-SAS)citations
- 2015Structural analysis of a nanoparticle containing a lipid bilayer used for detergent-free extraction of membrane proteinscitations
- 2015Thin-film modified electrodes with reconstituted cellulose-PDDAC films for the accumulation and detection of triclosancitations
- 2011Tuning percolation speed in layer-by-layer assembled polyaniline–nanocellulose composite filmscitations
- 2009Electrochemically Active Mercury Nanodroplets Trapped in a Carbon Nanoparticle - Chitosan Matrixcitations
- 2008Fundamental studies of gas sorption within mesopores situated amidst an inter-connected, irregular networkcitations
- 2008Thin-film modified electrodes with reconstituted cellulose-PDDAC films for the accumulation and detection of triclosancitations
- 2007Layer-by-layer deposition of open-pore mesoporous TiO2-Nafion (R) film electrodescitations
Places of action
| Organizations | Location | People |
|---|
article
Thin-film modified electrodes with reconstituted cellulose-PDDAC films for the accumulation and detection of triclosan
Abstract
A strategy for the formation of thin reconstituted cellulose films (pure or modified)) with embedded receptors or embedded ion-selective components is reported. Cellulose nanofibril ribbons from sisal of typically 3−5 nm diameter and 250 nm length are reconstituted into thin films of typically 1.5−2.0 μm thickness (or into thicker free-standing films). Cellulose and cellulose nanocomposite films are obtained in a simple solvent evaporation process. Poly-(diallyldimethylammonium chloride) or PDDAC is readily embedded into the cellulose film and imparts anion permselectivity to allow binding and transport of hydrophobic anions. The number of binding sites is controlled by the amount of PDDAC present in the film. The electrochemical properties of the cellulose films are investigated first for the Fe(CN)<sub>6</sub><sup>3-/4-</sup> model redox system and then for the accumulation and detection of triclosan (2,4,4‘-trichloro-2‘-hydroxydiphenyl ether, a hydrophobic polychlorinated phenol). Pure nanocellulose thin films essentially block the access to the electrode surface for anions such as Fe(CN)63- and Fe(CN)64-. In contrast, in the presence of cellulose−PDDAC films, accumulation and transport of both Fe(CN)63- and Fe(CN)64- in electrostatic binding sites occurs (Langmuirian binding constants for both are about 1.2 × 104 mol-1 dm3 in aqueous 0.1 M KCl). Facile reduction/oxidation at the electrode surface is observed. Triclosan, a widely used antifungal and antibacterial polychlorinated phenol is similarly accumulated into cationic binding sites (Langmuirian binding constant about 2.1 × 104 mol-1 dm3 in aqueous 0.1 M phosphate buffer pH 9.5) and is shown to give well-defined oxidation responses at glassy carbon electrodes. With a cellulose−PDDAC film electrode (80 wt % cellulose and 20 wt % PDDAC), the analytical range for triclosan in aqueous phosphate buffer at pH 9.5 is about 10<sup>-6</sup>−10<sup>-3</sup> mol dm<sup>-3</sup>.