145135 20241015105721.0 doi 10.1002/marc.201400355 sideral 95732 ART-2014-95732 eng Royes, Jorge (orcid)0000-0002-1220-3708 A bifunctional amorphous polymer exhibiting equal linear and circular photoinduced birefringence 2014 Access copy available to the general public Unrestricted The large and reversible photoinduced linear and circular birefringences in azo-compounds are at the basis of the interest in these materials, which are potentially useful for several applications. Since the onset of the linear and circular anisotropies relies on orientational processes, which typically occur on the molecular and supramolecular length scale, respectively, a circular birefringence at least one order of magnitude lower than the linear one is usually observed. Here, the synthesis and characterization of an amorphous polymer with a dimeric repeating unit containing a cyanoazobenzene and a cyanobiphenyl moiety are reported, in which identical optical linear and circular birefringences are induced for proper light dose and ellipticity. A pump-probe technique and an analytical method based on the Stokes–Mueller formalism are used to investigate the photoinduced effects and to evaluate the anisotropies. The peculiar photoresponse of the polymer makes it a good candidate for applications in smart functional devices. info:eu-repo/grantAgreement/ES/MINECO/MAT2011-27978-C02-01 info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 4.941 2014 POLYMER SCIENCE 8 / 82 = 0.098 2014 Q1 T1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Provenzano, Clementina Pagliusi, Pasquale Tejedor, Rosa M. Universidad de Zaragoza (orcid)0000-0003-1141-5933 Piñol, Milagros Universidad de Zaragoza (orcid)0000-0001-5556-2172 Oriol, Luis Universidad de Zaragoza (orcid)0000-0002-0922-5615 2013 765 Universidad de Zaragoza Dpto. Química Orgánica Área Química Orgánica 35, 1 (2014), 1890-1895 Macromol. rapid commun. Macromolecular Rapid Communications 1022-1336 1294043 http://zaguan.unizar.es/record/145135/files/texto_completo.pdf Postprint 1321066 http://zaguan.unizar.es/record/145135/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:145135 articulos driver 2024-10-15-10:56:34 ARTICLE