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Programmable self-assembling 3D architectures generated by patterning of swellable MOF-based composite films
Troyano, Javier (Institut Català de Nanociència i Nanotecnologia)
Carné Sánchez, Arnau (Institut Català de Nanociència i Nanotecnologia)
Maspoch Comamala, Daniel (Institut Català de Nanociència i Nanotecnologia)

Data: 2019
Resum: The integration of swellable metal–organic frameworks (MOFs) into polymeric composite films is a straightforward strategy to develop soft materials that undergo reversible shape transformations derived from the intrinsic flexibility of MOF crystals. However, a crucial step toward their practical application relies on the ability to attain specific and programmable actuation, which enables the design of self-shaping objects on demand. Herein, a chemical etching method is demonstrated for the fabrication of patterned composite films showing tunable self-folding response, predictable and reversible 2D-to-3D shape transformations triggered by water adsorption/desorption. These films are fabricated by selective removal of swellable MOF crystals allowing control over their spatial distribution within the polymeric film. Upon exposure to moisture, various programmable 3D architectures, which include a mechanical gripper, a lift, and a unidirectional walking device, are generated. Remarkably, these 2D-to-3D shape transformations can be reversed by light-induced desorption. The reported strategy offers a platform for fabricating flexible MOF-based autonomous soft mechanical devices with functionalities for micromanipulation, automation, and robotics.
Nota: Número d'acord de subvenció EC/FP7/615954
Nota: Número d'acord de subvenció MINECO/SEV‐2017‐0706
Nota: Número d'acord de subvenció MINECO/IJCI‐2016‐29802
Nota: Número d'acord de subvenció MINECO/MAT2015‐65354‐C2‐1‐R
Drets: Tots els drets reservats.
Llengua: Anglès.
Document: article ; recerca ; acceptedVersion
Matèria: Composite film ; Metal–organic framework ; Self‐folding ; Smart material ; Stimulus‐response
Publicat a: Advanced materials, Vol. 31, issue 21 (May 2019) , art. 1808235, ISSN 1521-4095

DOI: 10.1002/adma.201808235

Disponible a partir de: 2020-05-30

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Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Ciències > Institut Català de Nanociència i Nanotecnologia (ICN2)
Articles > Articles de recerca
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 Registre creat el 2019-07-02, darrera modificació el 2019-07-09

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