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dc.contributor.authorPalomo, Luis
dc.contributor.authorRodríguez Riego, Rafael
dc.contributor.authorMedina, Samara
dc.contributor.authorQuiñoá Cabana, Emilio
dc.contributor.authorCasado, Juan
dc.contributor.authorFreire Iribarne, Félix Manuel
dc.contributor.authorRamírez, Francisco Javier
dc.date.accessioned2020-10-09T08:38:58Z
dc.date.available2021-03-03T02:00:12Z
dc.date.issued2020
dc.identifier.citationL. Palomo, R. Rodríguez, S. Medina, E. Quiñoá, J. Casado, F. Freire, F. J. Ramírez, Angew. Chem. Int. Ed. 2020, 59, 9080
dc.identifier.issn1433-7851
dc.identifier.urihttp://hdl.handle.net/10347/23378
dc.descriptionThis is the peer reviewed version of the following article: L. Palomo, R. Rodríguez, S. Medina, E. Quiñoá, J. Casado, F. Freire, F. J. Ramírez, Angew. Chem. Int. Ed. 2020, 59, 9080, which has been published in final form at https://doi.org/10.1002/anie.202000651. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions
dc.description.abstractPoly(phenylacetylene)s are a family of helical polymers constituted by conjugated double bonds. Raman spectra of these polymers show a structural fingerprint of the polyene backbone which, in combination with its helical orientation, makes them good candidates to be studied by Raman optical activity (ROA). Four different well‐known poly(phenylacetylene)s adopting different scaffolds and ten different helical senses have been prepared. Raman and ROA spectra were recorded and allowed to establish ROA‐spectrum/helical‐sense relationships: a left/right‐handed orientation of the polyene backbone (Mhelix/Phelix) produces a triplet of positive/negative ROA bands. Raman and ROA spectra of each polymer exhibited the same profile, and the sign of the ROA spectrum was opposite to the lowest‐energy electronic circular dichroism (ECD) band, indicating a resonance effect. Resonance ROA appears then as an indicator of the helical sense of poly(phenylacetylene)s, especially for those with an extra Cotton band in the ECD spectrum, where a wrong helical sense is assigned based on ECD, while ROA alerts of this misassignment
dc.description.sponsorshipFinancial support from MINECO (PGC2018‐098533‐B‐I00 and the Junta de Andalucía project reference (UMA18‐FEDERJA‐057) are acknowledged. Xunta de Galicia (ED431C 2018/30, Centro singular de investigación de Galicia accreditation 2016–2019, ED431G/09 and postdoctoral fellowship for R.R.) and the European Regional Development Fund (ERDF) are also gratefully acknowledged
dc.language.isoeng
dc.publisherWiley
dc.relationinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PGC2018‐098533‐B‐I00/ES/SPECTROSCOPY OF PI-CONJUGATED ORGANIC MOLECULES: FROM AROMATICITY TO ANTIAROMATICITY AND NEW FORMS OF CONJUGATION
dc.rights© 2020 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for self-archiving
dc.subjectCircular Dichroism
dc.subjectHelical Polymers
dc.subjectHelical Sense
dc.subjectPoly(phenylacetylene)s
dc.subjectRaman Optical Activity
dc.titleRaman Optical Activity (ROA) as a New Tool to Elucidate the Helical Structure of Poly(phenylacetylene)s
dc.typeinfo:eu-repo/semantics/article
dc.identifier.DOI10.1002/anie.202000651
dc.relation.publisherversionhttps://doi.org/10.1002/anie.202000651
dc.type.versioninfo:eu-repo/semantics/acceptedVersion
dc.identifier.e-issn1521-3773
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 Orgánica
dc.description.peerreviewedSI


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