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dc.contributor.authorBergueiro Álvarez, Julián
dc.contributor.authorNúñez Martínez, Manuel
dc.contributor.authorArias López, Sandra
dc.contributor.authorQuiñoá Cabana, Emilio
dc.contributor.authorRiguera Vega, Ricardo
dc.contributor.authorFreire Iribarne, Félix Manuel
dc.date.accessioned2020-10-09T07:30:28Z
dc.date.available2020-10-09T07:30:28Z
dc.date.issued2020
dc.identifier.citationNanoscale Horiz., 2020, 5, 495
dc.identifier.urihttp://hdl.handle.net/10347/23375
dc.description.abstractA novel type of stimuli-responsive dynamic helical polymer–metal nanoparticle nanocomposite formed by a helical poly(phenylacetylene) (PPA) combined with gold nanoparticles (AuNPs) is described. Thus, several PPA copolymers containing the ethynyl-4-benzamide of (S)-phenylglycine methyl ester (M1) to dictate the helical structure/sense of the copolymer, and the ethynyl-4-benzamide of the 11-((2-(2-(2-aminoethoxy)ethoxy)ethyl)amino)undecane-1-thiol (M2) to link the copolymer to the AuNPs are prepared. Different morphologies of these nanocomposites were obtained by considering the thiol ratio and the self-assembly properties of the PPA, which generates from dispersed AuNPs to fibre-like structures. All these nanocomposites show a dynamic chiral behaviour, it being possible to manipulate their helical sense by the action of external stimuli. Moreover, it is possible to control the aggregation of these nanocomposites into macroscopically chiral nanospheres with low polydispersity by using Ba2+ as a crosslinking agent
dc.description.sponsorshipWe thank Servicio de Microscopía Electrónica (RIAIDT, USC). Financial support from MINECO (CTQ2015-70519-P), Xunta de Galicia (ED431C 2018/30, Centro singular de investigación de Galicia accreditation 2016-2019, ED431G/09) and the European Regional Development Fund (ERDF) is gratefully acknowledged. M. N.-M. thanks MICINN for an FPI contract (BES-2016-078107)
dc.language.isoeng
dc.publisherRoyal Society of Chemistry
dc.rights© The Royal Society of Chemistry 2020. This article may be used for non-commercial purposes in accordance with RSC Terms and Conditions for Use of Self-Archived Versions
dc.titleChiral gold–PPA nanocomposites with tunable helical sense and morphology
dc.typejournal article
dc.identifier.doi10.1039/C9NH00659A
dc.relation.publisherversionhttps://doi.org/10.1039/C9NH00659A
dc.type.hasVersionAM
dc.identifier.essn2055-6764
dc.rights.accessRightsopen access
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
dc.relation.projectIDinfo:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTQ2015-70519-P/ES/ATERIALES QUIROPTICOS MODULABLES A PARTIR DE POLIMEROS INTELIGENTES


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