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Optical and chemical control of the wettability of nanoporous photoswitchable films.

Zejun ZhangDonghui ChenDragos MutrucStefan HechtLars Heinke
Published in: Chemical communications (Cambridge, England) (2022)
Wettability is a central surface property of functional thin films. Here, we present a nanoporous film made of an azobenzene-containing metal-organic framework material where the wettability is controlled by photoswitching of the fluorinated azobenzene moieties and by reversible incorporation of guest molecules with different polarities in the pores. Using both, the optical and the chemical stimuli, the water contact angle was modified over a wide range, from 23° to 97°.
Keyphrases
  • metal organic framework
  • high resolution
  • room temperature
  • high speed
  • mass spectrometry
  • reduced graphene oxide
  • ionic liquid