Photocontrolled variations in the wetting capability of photochromic polymers enhanced by surface nanostructuring (Articolo in rivista)

Type
Label
  • Photocontrolled variations in the wetting capability of photochromic polymers enhanced by surface nanostructuring (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1021/la052122g (literal)
Alternative label
  • Athanassiou, A; Lygeraki, MI; Pisignano, D; Lakiotaki, K; Varda, M; Mele, E; Fotakis, C; Cingolani, R; Anastasiadis, SH; (2006)
    Photocontrolled variations in the wetting capability of photochromic polymers enhanced by surface nanostructuring
    in Langmuir
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Athanassiou, A; Lygeraki, MI; Pisignano, D; Lakiotaki, K; Varda, M; Mele, E; Fotakis, C; Cingolani, R; Anastasiadis, SH; (literal)
Pagina inizio
  • 2329 (literal)
Pagina fine
  • 2333 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 22 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 5 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 5 (literal)
Note
  • Scopu (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • FORTH, IESL, Iraklion 71110, Greece; Univ Patras, Dept Phys, Patras 22500, Greece; NNL, CNR, Distretto Technol ISUFI, I-73100 Lecce, Italy; Univ Crete, Phys Dept, Iraklion 71003, Greece (literal)
Titolo
  • Photocontrolled variations in the wetting capability of photochromic polymers enhanced by surface nanostructuring (literal)
Abstract
  • The wetting characteristics of surfaces of polymers doped with photochroinic spiropyran molecules can be tuned when irradiated with laser beams of properly chosen photon energy. The hydrophilicity is enhanced upon UV laser irradiation since the embedded nonpolar spiropyran molecules convert to their polar merocyanine isomers. The process is reversed upon green laser irradiation. Structuring of the photochromic polymeric surfaces with soft lithography enhances significantly the hydrophobicity of the system, indicating that the water droplets on the patterned features interact with air that is trapped in the microcavities, thus creating superhydrophobic air-water contact areas. Furthermore, the light-induced wettability variations of the structured surfaces are enhanced by a factor of 3 compared to those on the flat surfaces. This significant enhancement is attributed to the photoinduced reversible volume changes to the imprinted gratings, which additionally contribute to the wettability changes due to the light-induced photochromic interconversions. (literal)
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