| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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James, Tony D.
University of Bath
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (7/7 displayed)
- 2023Polymer Indicator Displacement Assay (PIDA) with Boronic Acid Receptors on Graphene Foam Electrodes for Self-Optimised Impedimetric Lactic Acid Determinationcitations
- 2020A simple, azulene-based colorimetric probe for the detection of nitrite in watercitations
- 2018A quick and selective rhodamine based “smart probe” for “signal-on” optical detection of Cu2+ and Al3+ in water, cell imaging, computational studies and solid state analysiscitations
- 2018A quick and selective rhodamine based “smart probe” for “signal-on” optical detection of Cu 2+ and Al 3+ in water, cell imaging, computational studies and solid state analysiscitations
- 2016A study on the AMACR catalysed elimination reaction and its application to inhibitor testingcitations
- 2015Hierarchical supramolecules and organization using boronic acid building blockscitations
- 2010N,N-Butyl-decamethylferrocenyl-amine reactivity at liquid vertical bar liquid interfaces: electrochemically driven anion transfer vs. pH driven proton transfercitations
Places of action
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article
Polymer Indicator Displacement Assay (PIDA) with Boronic Acid Receptors on Graphene Foam Electrodes for Self-Optimised Impedimetric Lactic Acid Determination
Abstract
Synthetic organic receptor molecules are employed based on boronic acids attached to graphene to provide functionality and selectivity in competitive analyte binding. Here, a new electrochemical sensor concept based on a surface redox polymer indicator displacement (avoiding traditional solution redox indicators) is proposed and demonstrated on graphene foam electrodes. A pyrene-derivatised boronic acid chemo-receptor for lactic acid is adsorbed onto graphene foam and coated with poly-nordihydroguaiaretic acid (poly-NHG) as an electrochemically active polymer indicator. When bound to the boronic acid, poly-NHG remains redox silent. Dynamic displacement with lactic acid results in a concentration-dependent Faradaic current response. Effects of pH and detection methodology (voltammetry, chronoamperometry, and impedance spectroscopy) are investigated. Self-optimised impedimetric sensing based on the interfacial electron transfer resistance is demonstrated. While lactic acid sensing in human serum is possible, the sensor response is lower. Surface-active components from human serum are shown to modify the sensor response without affecting performance. Lactic acid sensing in artificial sweat at pH 4.7 is shown to result in a Langmuirian binding curve with apparent binding constant K = 40 M-1.