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Luminescence Mechanochromism Induced by Cluster Isomerization

hal.structure.identifierLaboratoire de physique de la matière condensée [LPMC]
dc.contributor.authorHUITOREL, Brendan
hal.structure.identifierInstitut de Chimie de Strasbourg [IC]
dc.contributor.authorEL MOLL, Hani
hal.structure.identifierLaboratoire de Chimie Moléculaire [LCM]
dc.contributor.authorCORDIER, Marie
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorFARGUES, Alexandre
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorGARCIA, Alain
hal.structure.identifierInstitut des Matériaux Jean Rouxel [IMN]
dc.contributor.authorMASSUYEAU, Florian
dc.contributor.authorMARTINEAU-CORCOS, Charlotte
hal.structure.identifierLaboratoire de physique de la matière condensée [LPMC]
dc.contributor.authorGACOIN, Thierry
hal.structure.identifierLaboratoire de physique de la matière condensée [LPMC]
dc.contributor.authorPERRUCHAS, Sandrine
dc.date.issued2017-09-25
dc.identifier.issn0020-1669
dc.description.abstractEnLuminescent mechanochromic materials exhibiting reversible changes of their emissive properties in response to external mechanical forces are currently emerging as an important class of stimuli-responsive materials because of promising technological applications. Here, we report on the luminescence mechanochromic properties of a [Cu4I4(PPh3)4] copper iodide cluster presenting a chair geometry, being an isomer of the most common cubane form. This molecular cluster formulated [Cu4I4(PPh3)4]·2CHCl3 (1) exhibits a highly contrasted emission response to manual grinding, and, interestingly, the optical properties of the ground phase present striking similarities with those of the cubane isomer. In order to understand the underlying mechanism, a comparison with two related compounds has been conducted. The first one is a pseudopolymorph of 1 formulated as [Cu4I4(PPh3)4]·CH2Cl2 (2), which exhibits luminescent mechanochromic properties as well. The other one is also a chair compound but with a slightly different phosphine ligand, namely, [Cu4I4(PPh2C6H4CO2H)4] (3), lacking mechanochromic properties. Structural and optical characterizations of the clusters have been analyzed in light of previous electronic structure calculations. The results suggest an unpreceded mechanochromism phenomenon based on a solid-state chair → cubane isomer conversion. This study shows that polynuclear copper iodide compounds are particularly relevant for the development of luminescent mechanochromic materials.
dc.description.sponsorshipIRradiations Multiple-résonance en RMN pour la caractérisation structurale haute-résolution de MAtériaux Fluorés - ANR-12-JS08-0008
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.title.enLuminescence Mechanochromism Induced by Cluster Isomerization
dc.typeArticle de revue
dc.identifier.doi10.1021/acs.inorgchem.7b01870
dc.subject.halPhysique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]
dc.subject.halChimie/Matériaux
bordeaux.journalInorganic Chemistry
bordeaux.page12379 - 12388
bordeaux.volume56
bordeaux.issue20
bordeaux.peerReviewedoui
hal.identifierhal-01630178
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01630178v1
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