Indigo – From Jeans to Semiconductors: Indigo ‐ A Natural Pigment for High Performance Ambipolar Organic Field Effect Transistors and Circuits (Adv. Mater. 3/2012)

The cover shows a stylized electronic circuit in the shape of an indigo molecule embedded in an elastomer. Originally extracted from plants of the Indigofera genus more than 4000 years ago, indigo is nowadays the most industrially produced pigment. On page 375, Mihai Irimia-Vladu and co-workers present a new perspective this molecule brings to the field of organic electronics: long-range order, stability against degradation, and ambipolar semiconductor operation using fully biodegradable materials. (Image design by Georg Wieser, WIEsuell-3D Animation & Multimedia, Austria)