Hierarchical functional gradients of pH-responsive self-assembled monolayers using dynamic covalent chemistry on surfaces (vol 1, pg 649, 2009)

Nature Chemistry 1, 649–656 (2009); published online: 23 October 2009; corrected after print: 8 November 2009. In the version of this Article originally published, the units on the x axes of Figs 4a and 5c were incorrect; they should have read (mm). This has been corrected on the HTML and PDF versions of the Article.