A facile protection–deprotection route for obtaining indigo pigments as thin films and their applications in organic bulk heterojunctions
Chemical Communications2013Vol. 49(54), pp. 6063–6063
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Eric Daniel Głowacki, Gundula Voß, Kadir Demirak, Marek Havlíček, Nevsal Sünger, Aysu Ceren Okur, Uwe Monkowius, Jacek Gąsiorowski, Lucia Leonat, Niyazi Serdar Sariçiftçi
Abstract
Indigo and its derivatives are industrially-important dyes known for centuries. The low solubility of these compounds limits their applications and hinders potential synthetic chemistry using indigo as a building-block. Herein we report attachment of the tert-butoxy carbonyl (tBOC) thermolabile protecting group to indigos, allowing their processing into neat thin films as well as mixed films with a semiconducting polymer. Photoinduced charge transfer is observed to and from these pigments and the polymer.
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