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dc.contributor.authorPitto-Barry, Anaïs*
dc.contributor.authorBarry, Nicolas P.E.*
dc.contributor.authorRusso, V.*
dc.contributor.authorHeinrich, B.*
dc.contributor.authorDonnio, B.*
dc.contributor.authorTherrien, B.*
dc.contributor.authorDeschenaux, R.*
dc.date.accessioned2017-01-30T15:59:46Z
dc.date.available2017-01-30T15:59:46Z
dc.date.issued2014-12
dc.identifier.citationPitto-Barry A, Barry NPE, Russo V et al (2014) Designing supramolecular liquid-crystalline hybrids from pyrenyl-containing dendrimers and arene ruthenium metallacycles. Journal of the American Chemical Society. 136(50): 17616-17625.en_US
dc.identifier.urihttp://hdl.handle.net/10454/11221
dc.descriptionYesen_US
dc.description.abstractThe association of the arene ruthenium metallacycle [Ru4(p-cymene)4(bpe)2(donq)2][DOS]4 (bpe = 1,2-bis(4-pyridyl)ethylene, donq = 5,8-dioxydo-1,4-naphtoquinonato, DOS = dodecyl sulfate) with pyrenyl-functionalized poly(arylester) dendrimers bearing cyanobiphenyl end-groups is reported. The supramolecular dendritic systems display mesomorphic properties as revealed by polarized optical microscopy, differential scanning calorimetry and small-angle X-ray scattering measurements. The multicomponent nature of the dendrimers and of the corresponding host–guest supramolecules (i.e., end-group mesogens, dendritic core, pyrene unit, aliphatic spacers, and metallacycle) leads to the formation of highly segregated mesophases with a complex multilayered structure due to the tendency of the various constitutive building-blocks to separate in different organized zones. The pyrenyl dendrimers exhibit a multilayered smectic A-like phase, thereafter referred to as LamSmA phase to emphasize this unaccustomed morphology. As for the corresponding Ru4–metallacycle adducts, they self-organize into a multicontinuous thermotropic cubic phase with the Im3̅m space group symmetry. This represents a unique example of liquid-crystalline behavior observed for such large and complex supramolecular host–guest assemblies. Models of their supramolecular organizations within both mesophases are proposed.en_US
dc.description.sponsorshipR.D. thanks the Swiss National Science Foundation (Grant No 200020-140298) for financial support.en_US
dc.language.isoenen_US
dc.relation.isreferencedbyhttp://dx.doi.org/10.1021/ja510338ren_US
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in the Journal of the American Society, © 2014 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://dx.doi.org/10.1021/ja510338ren_US
dc.subjectArene ruthenium metallacycles; Pyrenyl-containing dendrimers; Supramolecular dendritic systems; Liquid-crystalline hybridsen_US
dc.titleDesigning supramolecular liquid-crystalline hybrids from pyrenyl-containing dendrimers and arene ruthenium metallacyclesen_US
dc.status.refereedYesen_US
dc.date.application2014-11-24
dc.typeArticleen_US
dc.type.versionAccepted Manuscripten_US
refterms.dateFOA2018-07-26T09:43:56Z


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