Polymeric colorants: Statistical copolymers of indigo building blocks with defined structures

…, D Gunzelmann, S Mondal, S van Smaalen…

Index: Voss, Gundula; Drechsler, Markus; Eller, Steffen; Gradzielski, Michael; Gunzelmann, Daniel; Mondal, Svastik; Van Smaalen, Sander; Voertler, Claus S. Helvetica Chimica Acta, 2009 , vol. 92, # 12 p. 2675 - 2697

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Citation Number: 4

Abstract

Abstract Statistical copolymers of indigo (1a) and N-acetylindigo (1b) building blocks with defined structures were studied. They belong to the class of polymeric colorants. The polymers consist of 5, 5′-connected indigo units with keto structure and N-acetylindigo units with uncommon tautomeric indoxyl/indolone (= 1H-indol-3-ol/3H-indol-3-one) structure (see 2a and 2b in Fig. 1). They formed amorphous salts of elongated monomer lengths as ...