Due to hydrogen bonding and π‐stacking, indigo and Tyrian purple form highly‐ordered crystalline thin films. Herein we review the history of these materials, their chemistry and physical properties, and their semiconducting characteristics in the solid state.
Indigoids are natural dyes that have been produced for centuries, and indigo is currently the most produced dye worldwide. We describe the history of indigo dye and its derivative Tyrian purple, from their roles in the ancient world to recent research showing the semiconducting properties of indigoids. Głowacki, Eric Daniel Voss, Gundula Leonat, Lucia Irimia‐Vladu, Mihai Bauer, Siegfried Sariciftci, Niyazi Serdar Indigo and Tyrian Purple – From Ancient Natural Dyes to Modern Organic Semiconductors Indigo and Tyrian Purple – From Ancient Natural Dyes to Modern Organic Semiconductors
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