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Mechanochromic luminescence and liquid crystallinity of molecular copper clusters
| hal.structure.identifier | Laboratoire de physique de la matière condensée [LPMC] | |
| dc.contributor.author | HUITOREL, Brendan | |
| hal.structure.identifier | Laboratoire de physique de la matière condensée [LPMC] | |
| dc.contributor.author | BENITO, Quentin | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | FARGUES, Alexandre | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | GARCIA, Alain | |
| hal.structure.identifier | Laboratoire de physique de la matière condensée [LPMC] | |
| dc.contributor.author | GACOIN, Thierry | |
| hal.structure.identifier | Laboratoire de physique de la matière condensée [LPMC] | |
| dc.contributor.author | BOILOT, Jean-Pierre | |
| hal.structure.identifier | Laboratoire de physique de la matière condensée [LPMC] | |
| dc.contributor.author | PERRUCHAS, Sandrine | |
| hal.structure.identifier | Institut des Sciences Chimiques de Rennes [ISCR] | |
| dc.contributor.author | CAMEREL, Franck | |
| dc.date.issued | 2016-11-22 | |
| dc.identifier.issn | 0897-4756 | |
| dc.description.abstractEn | Molecular copper iodide clusters with the [Cu4I4] cubane core have been functionalized by phosphine ligands carrying protomesogenic gallate-based derivatives bearing either long alkyl chains (C8, C12, and C16) or cyanobiphenyl (CBP) fragments. The mesomorphic properties of the functionalized clusters were studied by combining differential scanning calorimetry (DSC), polarized optical microscopy (POM), and small-angle X-ray scattering (SAXS) experiments. Whereas clusters functionalized solely with long alkyl chains present amorphous or crystalline states, the cluster carrying CBP fragments displays liquid crystal properties with the formation of a smectic A mesophase from room temperature up to 100 °C. Temperature-dependent photoluminescence measurements show that the CBP derivative displays an unusual luminescence thermochromism which is possibly due to a resonance energy transfer mechanism between the emissive [Cu4I4] inorganic and CBP moieties. The emission properties of this original cluster are also sensitive to variation of local order of the molecular assembly. Moreover, the liquid crystalline properties imported on the inorganic core allow for a facile deformation of its local environment, leading to mechanochromic properties related to modulation of intramolecular interactions. Indeed, mechanical constraints on the molecularly self-assembled structure induce changes at the molecular level by modification of the [Cu4I4] inorganic cluster core geometry and in particular of the strength of the cuprophilic interactions. | |
| dc.language.iso | en | |
| dc.publisher | American Chemical Society | |
| dc.subject.en | Copper | |
| dc.subject.en | Crystalline materials | |
| dc.subject.en | Differential scanning calorimetry | |
| dc.subject.en | Energy transfer | |
| dc.subject.en | Ligands | |
| dc.subject.en | Liquid crystals | |
| dc.subject.en | Liquids | |
| dc.subject.en | Luminescence | |
| dc.subject.en | Phosphorus compounds | |
| dc.subject.en | X ray scattering | |
| dc.subject.en | Intramolecular interactions | |
| dc.subject.en | Liquid crystalline properties | |
| dc.subject.en | Mechanical constraints | |
| dc.subject.en | Mechanochromic properties | |
| dc.subject.en | Polarized optical microscopy | |
| dc.subject.en | Resonance energy transfer | |
| dc.subject.en | Self assembled structures | |
| dc.subject.en | Temperature dependent photoluminescences | |
| dc.subject.en | Copper compounds | |
| dc.title.en | Mechanochromic luminescence and liquid crystallinity of molecular copper clusters | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1021/acs.chemmater.6b03002 | |
| dc.subject.hal | Chimie | |
| bordeaux.journal | Chemistry of Materials | |
| bordeaux.page | 8190--8200 | |
| bordeaux.volume | 28 | |
| bordeaux.issue | 22 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-01416449 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-01416449v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Chemistry%20of%20Materials&rft.date=2016-11-22&rft.volume=28&rft.issue=22&rft.spage=8190--8200&rft.epage=8190--8200&rft.eissn=0897-4756&rft.issn=0897-4756&rft.au=HUITOREL,%20Brendan&BENITO,%20Quentin&FARGUES,%20Alexandre&GARCIA,%20Alain&GACOIN,%20Thierry&rft.genre=article |
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