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dc.contributor.authorFernández Villar, Zulema
dc.contributor.authorFernández Rodríguez, Berta
dc.contributor.authorQuiñoá Cabana, Emilio
dc.contributor.authorFreire Iribarne, Félix Manuel
dc.date.accessioned2022-08-05T12:20:07Z
dc.date.available2022-08-05T12:20:07Z
dc.date.issued2021
dc.identifier.citationJ. Am. Chem. Soc. 2021, 143, 20962–20969. https://doi.org/10.1021/jacs.1c10327
dc.identifier.issn0002-7863
dc.identifier.urihttp://hdl.handle.net/10347/29026
dc.description.abstractSupramolecular and covalent polymers share multiple structural effects such as chiral amplification, helical inversion, sergeants and soldiers, or majority rules, among others. These features are related to the axial helical structure found in both types of materials, which are responsible for their properties. Herein a novel material combining information and characteristics from both fields of helical polymers, supramolecular (oligo(p-phenyleneethynylene) (OPE)) and covalent (poly(acetylene) (PA)), is presented. To achieve this goal, the poly(acetylene) must adopt a dihedral angle between conjugated double bonds (ω1) higher than 165°. In such cases, the tilting degree (Θ) between the OPE units used as pendant groups is close to 11°, like that observed in supramolecular helical arrays of these molecules. Polymerization of oligo[(p-phenyleneethynylene)n]phenylacetylene monomers (n = 1, 2) bearing L-decyl alaninate as the pendant group yielded the desired scaffolds. These polymers adopt a stretched and almost planar polyene helix, where the OPE units are arranged describing a helical structure. As a result, a novel multihelix material was prepared, the ECD spectra of which are dominated by the OPE axial array
dc.description.sponsorshipFinancial support from MICINN (PID2019-109733GB-I00, PID2020-117605GB-100), Xunta de Galicia (ED431C 2018/30, PID2020-117605GB-100, Centro Singular de Investigación de Galicia acreditación 2019-2022, ED431G 2019/03), and the European Regional Development Fund (ERDF) is gratefully acknowledged
dc.language.isoeng
dc.publisherACS Publications
dc.relationinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-109733GB-I00/ES/MATERIALES QUIRALES CON PROPIEDADES-ESTIMULO RESPUESTA: DISEÑO, SINTESIS Y APLICACIONES
dc.rights© 2021 American Chemical Society. This work is licenced under a Creative Commons Attribution 4.0 International licence (https://creativecommons.org/licenses/by/4.0/legalcode
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectChemical structure
dc.subjectCircular dichroism spectroscopy
dc.subjectMaterials
dc.subjectPolymer scaffolds
dc.subjectPolymers
dc.titleMerging supramolecular and covalent helical polymers: four helices within a single scaffold
dc.typeinfo:eu-repo/semantics/article
dc.identifier.DOI10.1021/jacs.1c10327
dc.relation.publisherversionhttps://pubs.acs.org/doi/10.1021/jacs.1c10327.
dc.type.versioninfo:eu-repo/semantics/publishedVersion
dc.rights.accessrightsinfo:eu-repo/semantics/openAccess
dc.contributor.affiliationUniversidade de Santiago de Compostela. Centro de Investigación en Química Biolóxica e Materiais Moleculares
dc.contributor.affiliationUniversidade de Santiago de Compostela. Departamento de Química Física
dc.contributor.affiliationUniversidade de Santiago de Compostela. Departamento de Química Orgánica
dc.description.peerreviewedSI


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© 2021 American Chemical Society. This work is licenced under a Creative Commons Attribution 4.0 International licence (https://creativecommons.org/licenses/by/4.0/legalcode
Except where otherwise noted, this item's license is described as  © 2021 American Chemical Society. This work is licenced under a Creative Commons Attribution 4.0 International licence (https://creativecommons.org/licenses/by/4.0/legalcode





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