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Title

3D organic nanofabrics: plasma-assisted synthesis and antifreezing behavior of superhydrophobic and lubricant-infused slippery surfaces

AuthorsAlcaire, Maria; López-Santos, Carmen ; Aparicio, Francisco J. ; Sánchez-Valencia, J. R. ; Obrero, Jose M.; Saghi, Zineb; Rico, Víctor J. ; Fuente, Germán F. de la ; González-Elipe, Agustín R. ; Barranco, Ángel ; Borrás, Ana
Issue Date2019
PublisherAmerican Chemical Society
CitationLangmuir 35(51): 16876-16885 (2019)
AbstractHerein, we present the development of supported organic nanofabrics formed by a conformal polymer-like interconnection of small-molecule organic nanowires and nanotrees. These organic nanostructures are fabricated by a combination of vacuum and plasma-assisted deposition techniques to generate step by step, single-crystalline organic nanowires forming one-dimensional building blocks, organic nanotrees applied as three-dimensional templates, and the polymer-like shell that produces the final fabric. The complete procedure is carried out at low temperatures and is compatible with an ample variety of substrates (polymers, metal, ceramics; either planar or in the form of meshes) yielding flexible and low solid-fraction three-dimensional nanostructures. The systematic investigation of this progressively complex organic nanomaterial delivers key clues relating their wetting, nonwetting, and anti-icing properties with their specific morphology and outer surface composition. Water contact angles higher than 150° are attainable as a function of the nanofabric shell thickness with outstanding freezing-delay times (FDT) longer than 2 h at −5 °C. The role of the extremely low roughness of the shell surface is settled as a critical feature for such an achievement. In addition, the characteristic interconnected microstructure of the nanofabrics is demonstrated as ideal for the fabrication of slippery liquid-infused porous surfaces (SLIPS). We present the straightforward deposition of the nanofabric on laser patterns and the knowledge of how this approach provides SLIPS with FDTs longer than 5 h at −5 °C and 1 h at −15 °C.
Publisher version (URL)https://doi.org/10.1021/acs.langmuir.9b03116
URIhttp://hdl.handle.net/10261/203546
DOI10.1021/acs.langmuir.9b03116
ISSN0743-7463
E-ISSN1520-5827
Appears in Collections:(ICMA) Artículos
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