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Published on: April 15, 2013
Effect of nanostructure on the surface dipole moment of photoreversibly tunable superhydrophobic surfaces
Ho Sun Lim1, Wi Hyoung Lee, Seung Goo Lee
1Department of Chemical Engineering, Polymer Research Institute, Pohang University of Science and Technology, Pohang, 790-784, Korea.
Abstract:
Fluorinated azobenzene-modified nanoporous substrates were fabricated such that the surface properties were photoreversibly converted between superhydrophobicity and superhydrophilicity as a result of UV irradiation. This result was attributed to the enhanced surface roughness of the nanostructured surface, which supplied sufficient free space within the monolayer for the tethered azobenzenes to facilely isomerize.
