Resumen: Ultrathin films of a robust RhII-based porous metal–organic polyhedra (MOP) have been obtained. Homogeneous and compact monolayer films (ca. 2.5 nm thick) were first formed at the air–water interface, deposited onto different substrates and characterized using spectroscopic methods, scanning transmission electron microscopy and atomic force microscopy. As a proof of concept, the gas separation performance of MOP-supported membranes has also been evaluated. Selective MOP ultrathin films (thickness ca. 60 nm) exhibit remarkable CO2 permeance and CO2/N2 selectivity, demonstrating the great combined potential of MOP and Langmuir-based techniques in separation technologies. Idioma: Inglés DOI: 10.1002/chem.201904141 Año: 2020 Publicado en: Chemistry - A European Journal 26, 1 (2020), 143-147 ISSN: 0947-6539 Factor impacto JCR: 5.236 (2020) Categ. JCR: CHEMISTRY, MULTIDISCIPLINARY rank: 52 / 178 = 0.292 (2020) - Q2 - T1 Factor impacto SCIMAGO: 1.687 - Catalysis (Q1) - Organic Chemistry (Q1) - Chemistry (miscellaneous) (Q1)