95944 20210820090346.0 doi 10.3390/polym11050885 sideral 116331 ART-2019-116331 eng Royes, J. (orcid)0000-0002-1220-3708 Strategies to stabilize the photoinduced supramolecular chirality in azobenzene liquid crystalline polymers 2019 Access copy available to the general public Unrestricted This paper describes the synthesis, thermal characterization and optical properties of liquid crystalline homopolymers and block copolymers with a repeating unit consisting of two functional units, with at least one of them being an azobenzene. Films of these polymers have been irradiated with circularly polarized light at room temperature, evaluating the intensity of the photoinduced chiral signal and its temporal stability upon storage. The paper also explores two different strategies to restrict the relaxation of the photoinduced order. Firstly, block copolymers have been prepared to confine the photoaddressable segments into nanoscopic domains where relaxation should be restricted. Secondly, an alternative homopolymer has been synthesized where the repeating unit combines two chromophores that can be separately photoaddressed, an azobenzene unit to efficiently photoinduce chirality and a cinnamate to fix the chiral signal by photocrosslinking. info:eu-repo/grantAgreement/ES/DGA/FEDER info:eu-repo/grantAgreement/ES/MINECO/MAT2017-84838-P info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 3.426 2019 POLYMER SCIENCE 16 / 89 = 0.18 2019 Q1 T1 0.704 2019 Polymers and Plastics 2019 Q1 Chemistry (miscellaneous) 2019 Q2 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Oriol, L. Universidad de Zaragoza (orcid)0000-0002-0922-5615 Tejedor, R. M. Universidad de Zaragoza (orcid)0000-0003-1141-5933 Piñol, M. Universidad de Zaragoza (orcid)0000-0001-5556-2172 2013 765 Universidad de Zaragoza Dpto. Química Orgánica Área Química Orgánica 11, 5 (2019), 885 [16 pp] Polymers (Basel) POLYMERS 2073-4360 736737 http://zaguan.unizar.es/record/95944/files/texto_completo.pdf Versión publicada 492542 http://zaguan.unizar.es/record/95944/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:95944 articulos driver 2021-08-20-08:38:16 ARTICLE