164116 20251121161351.0 doi 10.1021/acsami.5c14743 sideral 146218 ART-2025-146218 eng Marín, Iván Phototunable Chiral-Selective Nanoporous Material 2025 Herein, we present the development of tunable chiral nanoporous materials capable of enantioselectively adsorbing racemic mixtures. The materials are based on hydrogen-bonded supramolecular structures formed from a melamine derivative as the central core and three peripheral dendrons functionalized with coumarin and azobenzene moieties that are organized in hexagonal columnar phases. Upon irradiation with circularly polarized light (CPL), the azobenzene units induce controlled chirality in the material, which is stabilized by photodimerization of the coumarin moieties, obtaining mechanically stable films. The elimination of the melamine template results in nanoporous materials that retain their homeotropic hexagonal columnar alignment. These materials show selective adsorption of one particular enantiomer of racemic mixtures of (hexan-2-yl)-4-nitroaniline. Pore chirality can be reversed by changing the handedness of the CPL, allowing nanoporous materials to adsorb predominantly one or the other enantiomer. These findings offer a versatile strategy for enantioselective separation with potential applications in pharmaceuticals and materials science. Access copy available to the general public Unrestricted info:eu-repo/grantAgreement/ES/AEI/CEX2023-001286-S info:eu-repo/grantAgreement/ES/DGA/E47-23R info:eu-repo/grantAgreement/ES/MICIN/PID2024-157398NB-I00 info:eu-repo/grantAgreement/ES/MINECO/PID2021-122882NB-I00 info:eu-repo/grantAgreement/ES/MINECO/PID2021-126132-NB-I00 info:eu-repo/grantAgreement/ES/MINECO/PID2024-156641NB-I00 info:eu-repo/semantics/openAccess by https://creativecommons.org/licenses/by/4.0/deed.es info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion López Ram de Viu, Pilar Universidad de Zaragoza (orcid)0000-0001-8105-2432 Romero, Pilar (orcid)0000-0003-1378-0571 Liu, Danqing Broer, Dirk J. Barberá, Joaquín Universidad de Zaragoza (orcid)0000-0001-5816-7960 Serrano, José Luis Universidad de Zaragoza (orcid)0000-0001-9866-6633 2013 765 Universidad de Zaragoza Dpto. Química Orgánica Área Química Orgánica 17, 44 (2025), 61007-61017 ACS appl. mater. interfaces ACS applied materials & interfaces 1944-8244 12657057 http://zaguan.unizar.es/record/164116/files/texto_completo.pdf Versión publicada 2949253 http://zaguan.unizar.es/record/164116/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:164116 articulos driver 2025-11-21-14:26:50 ARTICLE