2026-06-01T22:07:59Zhttps://riuma.uma.es/rest/oai/request

oai:riuma.uma.es:10630/209932026-02-03T10:51:23Zcom_10630_2254col_10630_37953

A Self-Folding Polymer Film Based on Swelling Metal–Organic Frameworks Troyano, Javier Carné-Sánchez, Arnau Pérez-Carvajal, Javier León-Reina, Laura Imaz, Inhar Cabeza-Díaz, Aurelio Maspoch, Daniel Conductores orgánicos Herein, we exploit the well-known swelling behaviour of metal–organic frameworks (MOFs) to create a selffolding polymer film. Namely, we show that incorporating crystals of the flexible MOF MIL-88A into a polyvinylidene difluoride (PVDF) matrix affords a polymer composite film that undergoes reversible shape transformations upon exposure to polar solvents and vapours. Since the self-folding properties of this film correlate directly with the swelling properties of the MIL-88A crystals, it selectively bends to certain solvents and its degree of folding can be controlled by controlling the relative humidity. Moreover, it shows a shapememory effect at relative humidity values from 60% to 90%. As proof of concept, we demonstrate that these composite films can lift cargo and can be used to assemble 3D structures from 2D patterns. Our strategy is a straightforward method for designing autonomous soft materials with folding properties that can be tuned by judicious choice of the constituent flexible MOF. 2021-02-25T12:23:44Z 2021-02-25T12:23:44Z 2018-10-23 journal article Angew. Chem. 2018, 130, 15646 –15650 https://hdl.handle.net/10630/20993 /10.1002/anie.201808433. eng open access Wiley-VCH Verlag GmbH & Co.