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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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Tedim, J.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (22/22 displayed)
- 2021Insights into corrosion behaviour of uncoated Mg alloys for biomedical applications in different aqueous mediacitations
- 2021Insights into corrosion behaviour of uncoated Mg alloys for biomedical applications in different aqueous mediacitations
- 2020Layered double hydroxides (LDHs) as functional materials for the corrosion protection of aluminum alloys: A reviewcitations
- 2019Layered Double Hydroxide Clusters as Precursors of Novel Multifunctional Layers: A Bottom-Up Approachcitations
- 2018A novel bilayer system comprising LDH conversion layer and sol-gel coating for active corrosion protection of AA2024citations
- 2017PEO Coatings with Active Protection Based on In-Situ Formed LDH-Nanocontainerscitations
- 2017How Density Functional Theory Surface Energies May Explain the Morphology of Particles, Nanosheets, and Conversion Films Based on Layered Double Hydroxidescitations
- 2017Hierarchically organized Li–Al-LDH nano-flakes: a low-temperature approach to seal porous anodic oxide on aluminum alloyscitations
- 2016Corrosion protection of AA2024-T3 by LDH conversion films. Analysis of SVET resultscitations
- 2016Sealing of tartaric sulfuric (TSA) anodized AA2024 with nanostructured LDH layerscitations
- 2016Corrosion protection of AA2024 by sol–gel coatings modified with MBT-loaded polyurea microcapsulescitations
- 2016Interlayer intercalation and arrangement of 2-mercaptobenzothiazolate and 1,2,3-benzotriazolate anions in layered double hydroxides: In situ X-ray diffraction studycitations
- 2015Polyelectrolyte-modified layered double hydroxide nanocontainers as vehicles for combined inhibitorscitations
- 2014Active sensing coating for early detection of corrosion processescitations
- 2012Chitosan-based self-healing protective coatings doped with cerium nitrate for corrosion protection of aluminum alloy 2024citations
- 2011Modulating spectroelectrochemical properties of [Ni(salen)] polymeric films at molecular levelcitations
- 2011Self-healing protective coatings with "green" chitosan based pre-layer reservoir of corrosion inhibitorcitations
- 2010Solid-State Electrochromic Cells Based on [M(salen)]-Derived Electroactive Polymer Filmscitations
- 2010Structural and electrochemical characterisation of [Pd(salen)]-type conducting polymer filmscitations
- 2009Modulation of electroactive polymer film dynamics by metal ion complexation and redox switchingcitations
- 2008Preparation and characterization of poly[Ni(salen)(crown receptor)]/multi-walled carbon nanotube composite filmscitations
- 2007Correlating structure and ion recognition properties of [Ni(salen)]-based polymer filmscitations
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article
Correlating structure and ion recognition properties of [Ni(salen)]-based polymer films
Abstract
The structural origins of ion recognition by electrochemically addressable poly[Ni(salen)] thin films are explored using in situ X-ray spectroscopy. XANES and EXAFS provided the local environment (nearest and next-nearest neighbours) around the Ni atom and solution-derived Ba2+ bound to the film. The Ni is covalently bound to two N and two O donors in square planar geometry, irrespective of film redox state and the presence (or absence) of bound Ba2+. The role of the Ni is purely structural; dramatic changes in i-E response accompanying Ba2+ uptake are assigned to the delocalised poly(salen) polymer spine. Ba2+ is trapped in a pseudo-crown formed by two methoxy O donors and two O donors shared with the Ni atom. The Ba2+ EXAFS signal from thick films (10 mu m) is significantly below that anticipated from electrochemical observations on thin films (<100 nm). Since EXAFS and XANES integrate populations over the entire film, this suggests that slow transport restricts Ba2+ access to the outer region of the film; surface sensitive XPS data confirm this. Combination of spectroscopic and electrochemical data suggest that, for exposure times of ca. 10(3) s, only sites in the outer ca. 1 mu m of the film are occupied; the implied diffusion coefficient of 10(-11) cm(2) s(-1) is consistent with a relatively compact solvated film.