132053 20240301161205.0 doi 10.1002/pola.27373 sideral 93603 ART-2014-93603 eng Concellón, Alberto Universidad de Zaragoza (orcid)0000-0002-8932-9085 Photoresponsive polymers and block copolymers by molecular recognition based on multiple hydrogen bonds 2014 A new methacrylate containing a 2,6-diacylaminopyridine (DAP) group was synthesized and polymerized via RAFT polymerization to prepare homopolymethacrylates (PDAP) and diblock copolymers combined with a poly(methyl methacrylate) block (PMMA-b-PDAP). These polymers can be easily complexed with azobenzene chromophores having thymine (tAZO) or carboxylic groups with a dendritic structure (dAZO), which can form either three or two hydrogen bonds with the DAP groups, respectively. The supramolecular polymers were characterized by spectroscopic techniques, optical microscopy, TGA, and DSC. The supramolecular polymers and block copolymers with dAZO exhibited mesomorphic properties meanwhile with tAZO are amorphous materials. The response of the supramolecular polymers to irradiation with linearly polarized light was also investigated founding that stable optical anisotropy can be photoinduced in all the materials although higher values of birefringence and dichroism were obtained in polymers containing the dendrimeric chromophore dAZO info:eu-repo/grantAgreement/ES/MINECO/MAT2011-27978-C02-01 info:eu-repo/grantAgreement/ES/MINECO/MAT2011-27978-C02-02 info:eu-repo/semantics/closedAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 3.113 2014 POLYMER SCIENCE 18 / 82 = 0.22 2014 Q1 T1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Blasco, Eva Piñol, Milagros Universidad de Zaragoza (orcid)0000-0001-5556-2172 Oriol, Luis Universidad de Zaragoza (orcid)0000-0002-0922-5615 Díez, Isabel Berges, Cristina Sánchez-Somolinos, Carlos Universidad de Zaragoza (orcid)0000-0003-3900-2866 Alcalá, Rafael Universidad de Zaragoza (orcid)0000-0002-2813-3177 2013 765 Universidad de Zaragoza Dpto. Química Orgánica Área Química Orgánica 2003 395 Universidad de Zaragoza Dpto. Física Materia Condensa. Área Física Materia Condensada 52, 22 (2014), 3173-3184 J. polym. sci., A, Polym. chem. JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY 0887-624X 2047381 http://zaguan.unizar.es/record/132053/files/texto_completo.pdf Postprint 729628 http://zaguan.unizar.es/record/132053/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:132053 articulos driver 2024-03-01-14:35:48 ARTICLE