| 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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Bardeau, Jean-François
Université d'Orléans
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (26/26 displayed)
- 2024Green Luminescence in Zero-Dimensional Lead bromide hybrid material (C5H9N3)2PbBr6: Experimental and Theoretical Studiescitations
- 2023In situ mapping of biomineral skeletal proteins by molecular recognition imaging with antibody-functionalized AFM tipscitations
- 2023Quantitative PEEM and Raman study of nanorough Au SERS-Active substrates for molecular sensing applicationscitations
- 2023One-step electrochemical elaboration of SnO2 modified electrode for lead ion trace detection in drinking water using SWASVcitations
- 2022Synthesis, structural and electrical characterization of a new organic inorganic bromide: [(C3H7)4N]2CoBr4citations
- 2021Phase diagram and transition temperatures in the system (T-T’) La2-xNdxCuO4 (x ≤ 0.5)citations
- 2019Antibiofilm Activity of Polyamide 11 Modified with Thermally Stable Polymeric Biocide Polyhexamethylene Guanidine 2-Naphtalenesulfonatecitations
- 2017Unexpected magnetic properties explained by the homogeneity of mixed ferritescitations
- 2016Structural behavior of laser-irradiated γ-Fe 2 O 3 nanocrystals dispersed in porous silica matrix : γ-Fe 2 O 3 to α-Fe 2 O 3 phase transition and formation of ε-Fe 2 O 3citations
- 2016Structural behavior of laser-irradiated γ-Fe 2 O 3 nanocrystals dispersed in porous silica matrix : γ-Fe 2 O 3 to α-Fe 2 O 3 phase transition and formation of ε-Fe 2 O 3citations
- 2016Understanding of the mechanical and structural changes induced by alpha particles and heavy ions in the French simulated nuclear waste glasscitations
- 2015The Inhibitive Effect of Cerium Carbonate on the Corrosion of Brass in 3% NaCl Solutioncitations
- 2015Experimental evidence of ultrathin polymer film stratification by AFM force spectroscopycitations
- 2015The effect of temperature on carbon steel corrosion under geological conditionscitations
- 2015Full-field and contact-less topography of nanometric thin films based on multiwavelength interferometrycitations
- 2014Assignment of Raman-active vibrational modes of tetragonal mackinawite: Raman investigations and ab initio calculationscitations
- 2014Carbon steel corrosion in clay-rich environmentcitations
- 2014Magnetic interactions in γ-Fe 2 O 3 @SiO 2 nanocompositescitations
- 2014The Corrosion Behavior of Carbon Steel in Sulfide Aqueous Media at 30 degrees Ccitations
- 2013A Preliminary Investigation of the ISG Glass Vapor Hydrationcitations
- 2013Impact of a sulphidogenic environment on the corrosion behavior of carbon steel at 90 °Ccitations
- 2013Insight into the mechanism of carbon steel corrosion under aerobic and anaerobic conditionscitations
- 2012Insights into the Mechanism Related to the Phase Transition from γ-Fe2O3 to α-Fe2O3 Nanoparticles Induced by Thermal Treatment and Laser Irradiationcitations
- 2011Site-Selective Surface Modification Using Enzymatic Soft Lithographycitations
- 2008Morphology and Glass Transition of Thin Polylactic Acid Films
- 2005Metal-insulator transition in thin films of RxR ' 1-xNiO3 compounds: DC electrical conductivity and IR spectroscopy measurementscitations
Places of action
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article
Synthesis, structural and electrical characterization of a new organic inorganic bromide: [(C3H7)4N]2CoBr4
Abstract
International audience ; A new organic inorganic hybrid [TPA]2CoBr4, where TPA = [(C3H7)4N]+ (i.e., tetra-propyl-ammonium) compound has been synthesized by slow evaporation method at room temperature. Single crystal X-ray diffraction (SC-XRD), X-ray powder diffraction (XRPD), thermal analyses, vibrational and complex impedance spectroscopy have been used to characterize both structural, thermal, electrical properties. [TPA]2CoBr4 crystallizes in the monoclinic system (C2/c space group) with the following cell parameters: a = 33.145 (5) Å, b = 14.234 (3) Å, c = 15.081 (2) Å and β = 110.207 (5)°. In the crystal structure, the organic TPA cations which form layers stacked along the a-axis, are separated from each other by inorganic tetrahedral [CoBr4]2− anions. The XRPD pattern confirms both the high purity of the sample and the crystalline nature of the powder. The differential scanning calorimetry (DSC) analysis shows an endothermic peak at 394 K upon heating which is ascribed to a structural phase transition since no decomposition of the titled compound is evidenced by thermogravimetric analysis. The ac conductivity and the dielectric properties confirm the presence of the phase transition. At the structural phase transition around 394 K, a change from a quantum mechanical tunneling to a correlated barrier hopping conduction models is determined from the temperature dependence of the exponent s of the Jonscher's power law. The analysis of complex impedance spectra shows that the electrical properties of the material are heavily dependent on frequency and temperature, indicating a relaxation phenomenon and semiconductor-type behavior. One single semicircle is detectable in the Nyquist plots of the complex impedance spectra which can be satisfactorily fitted with a combination R//CPE elements assigned to the bulk response. This behavior suggests that the sample is electrically homogeneous. Capacitance analysis proves the high effective permittivity at radio frequencies in the sample.