Afficher la notice abrégée

Spin crossover-induced colossal positive and negative thermal expansion in a nanoporous coordination framework material

hal.structure.identifierSchool of Chemistry
dc.contributor.authorMULLANEY, Benjamin
hal.structure.identifierSchool of Chemistry
dc.contributor.authorGOUX-CAPES, Laurence
hal.structure.identifierSchool of Chemistry
dc.contributor.authorPRICE, David J.
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorCHASTANET, Guillaume
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorLÉTARD, Jean-François
hal.structure.identifierSchool of Chemistry
dc.contributor.authorKEPERT, Cameron J.
dc.date.issued2017
dc.identifier.issn2041-1723
dc.description.abstractEnExternal control over the mechanical function of materials is paramount in the development of nanoscale machines. Yet, exploiting changes in atomic behaviour to produce controlled scalable motion is a formidable challenge. Here, we present an ultra-flexible coordination framework material in which a cooperative electronic transition induces an extreme abrupt change in the crystal lattice conformation. This arises due to a change in the preferred coordination character of Fe(II) sites at different spin states, generating scissor-type flexing of the crystal lattice. Diluting the framework with transition-inactive Ni(II) sites disrupts long-range communication of spin state through the lattice, producing a more gradual transition and continuous lattice movement, thus generating colossal positive and negative linear thermal expansion behaviour, with coefficients of thermal expansion an order of magnitude greater than previously reported. This study has wider implications in the development of advanced responsive structures, demonstrating electronic control over mechanical motion.
dc.language.isoen
dc.publisherNature Publishing Group
dc.title.enSpin crossover-induced colossal positive and negative thermal expansion in a nanoporous coordination framework material
dc.typeArticle de revue
dc.identifier.doi10.1038/s41467-017-00776-1
dc.subject.halChimie/Matériaux
dc.subject.halChimie/Chimie de coordination
bordeaux.journalNature Communications
bordeaux.page1053
bordeaux.volume8
bordeaux.peerReviewedoui
hal.identifierhal-01626422
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01626422v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Nature%20Communications&rft.date=2017&rft.volume=8&rft.spage=1053&rft.epage=1053&rft.eissn=2041-1723&rft.issn=2041-1723&rft.au=MULLANEY,%20Benjamin&GOUX-CAPES,%20Laurence&PRICE,%20David%20J.&CHASTANET,%20Guillaume&L%C3%89TARD,%20Jean-Fran%C3%A7ois&rft.genre=article


Fichier(s) constituant ce document

FichiersTailleFormatVue

Il n'y a pas de fichiers associés à ce document.

Ce document figure dans la(les) collection(s) suivante(s)

Afficher la notice abrégée