RT Journal Article T1 Following the light: 3D-printed COF@poly(2-hydroxyethyl methacrylate) dual emissive composite with response to polarity and acidity T2 Siguiendo la luz: compuesto emisivo dual de COF@polietil(2-hidroxietilmetacrilato) impreso en 3D con respuesta a la polaridad y la acidez A1 Martínez-Fernández, Marcos A1 Gavara, Raquel A1 Royuela, Sergio A1 Fernández-Ecija, Laura A1 Ignacio Martínez, José A1 Zamora, Félix A1 Segura Castedo, José Luis AB A new imine-based covalent organic framework (COF) functionalized in its cavities with moieties of the chromophore Nile Red has been synthesized and characterized. Using mechanical (ultrasonics) and chemical (acid-self-exfoliation) methods, exfoliation of the COF powder has been explored in water and water/organic media. In the latter, the obtained colloids exhibit dual emission originating from the Nile Red units (red) and the COF framework (green) that can be employed to prepare ratiometric sensors of polarity and acidity. Thus, taking advantage of the in situ exfoliation of the material in methacrylic monomers, free-standing polymeric films that preserve the optical properties of the exfoliated COF have been prepared. Finally, 3D liquid crystal display (LCD) additive manufacturing has been employed to prepare the dual emissive composites as tailored 3D-printed objects. PB Royal Society of Chemistry SN 2050-7488 SN 2050-7496 YR 2022 FD 2022-01-06 LK https://hdl.handle.net/20.500.14352/100400 UL https://hdl.handle.net/20.500.14352/100400 LA eng NO MINECO NO Comunidad de Madrid DS Docta Complutense RD 25 jul 2024