About the cover

July 2010 Volume 2 No 7

A combined theoretical and experimental study by Matile and co-workers on a series of substituted naphthalenediimides reveals that increasing the pi-acidity of the aromatic system leads to stronger interactions with anions, and results in more effective and selective anion transport across lipid-bilayer membranes. Although the most pi-acidic compound used in this study is a dicyano derivative with a quadrupole moment of +39 Buckinghams, the cover image shows an artist's impression of an elusive +56 Buckinghams-aromatic system with four cyano groups (image courtesy of Roanna Dawson).

Cover design by Alex Wing/Nature Chemistry.

Article p533

News & Views p516