Controlling Wettability and Photochromism in a Dual‐Responsive Tungsten Oxide Film

A wet and dry paper! Tungsten oxide films prepared by a facile electrochemical deposition process provide the first example of a dual surface functionality. The reversible switch of wettability between superhydrophobicity and superhydrophilicity is realized by alternating irradiation with UV light and storage in the dark; this phenomenon is accompanied by photochromism (see picture). Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2006/z502061_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.