Azaindolo[3,2,1-jk]carbazoles: New Building Blocks for Functional Organic Materials

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Abstract

The preparation and characterization of 12 azaindolo[3,2,1-jk]carbazoles is presented. Ring-closing C−H activation allowed for the convenient preparation of six singly and six doubly nitrogen-substituted indolo[3,2,1-jk]carbazole derivatives in which ten of the materials have not been described in the literature before. The detailed photophysical and electrochemical characterization of the developed materials revealed a significant impact of the incorporation of pyridine-like nitrogen into the fully planar indolo[3,2,1-jk]carbazole backbone. Furthermore, the nitrogen position decisively impacted intermolecular hydrogen bonding and thus the solid-state alignment. Ultimately, the versatility of the azaindolo[3,2,1-jk]carbazoles scaffold makes this class of materials an attractive new building block for the design of functional organic materials.

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Kader, T., Stöger, B., Fröhlich, J., & Kautny, P. (2019). Azaindolo[3,2,1-jk]carbazoles: New Building Blocks for Functional Organic Materials. Chemistry - A European Journal, 25(17), 4412–4425. https://doi.org/10.1002/chem.201805578

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