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hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDELVILLE, Marie-Hélène
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorBARBUT, David
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorWATTIAUX, Alain
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorBASSAT, Jean-Marc.
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorMÉNÉTRIER, Michel
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorLABRUGÈRE, Christine
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorGRENIER, Jean-Claude
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorETOURNEAU, Jean
dc.date.issued2009
dc.identifier.issn0020-1669
dc.description.abstractEnThe fluorination of La<sub>2</sub>CuO<sub>4</sub> was achieved for the first time under normal conditions of pressure and temperature (1 MPa and 298 K) via electrochemical insertion in <i>organic</i> fluorinated electrolytes and led to lanthanum oxyfluorides of general formula La<sub>2</sub>CuO<sub>4</sub>F<sub><i>x</i></sub>. Analyses showed that, underneath a very thin layer of LaF<sub>3</sub> (a few atomic layers), fluorine is effectively inserted in the material's structure. The fluorination strongly modifies the lanthanum environment, whereas very little modification is observed on copper, suggesting an insertion in the La<sub>2</sub>O<sub>2</sub> blocks of the structure. In all cases, fluorine insertion breaks the translation symmetry and introduces a long-distance disorder, as shown by electron spin resonance. These results highlight the efficiency of electrochemistry as a new “chimie douce” type fluorination technique for solid-state materials. Performed at room temperature, it additionally does not require any specific experimental care. The choice of the electrolytic medium is crucial with regard to the fluorine insertion rate as well as the material deterioration. Successful application of this technique to the well-known La<sub>2</sub>CuO<sub>4</sub> material provides a basis for further syntheses from other oxides.
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.typeArticle de revue
dc.identifier.doi10.1021/ic900912d
dc.subject.halChimie/Matériaux
bordeaux.journalInorganic Chemistry
bordeaux.page7962-7969
bordeaux.volume48
bordeaux.issue16
bordeaux.peerReviewedoui
hal.identifierhal-00418911
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00418911v1
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