Effects of chalcogen atom variation in chalcogenadiazole fused indolo[2,3-a]carbazoles?
New Journal of Chemistry Pub Date: 2018-03-23 DOI: 10.1039/C7NJ04661H
Abstract
A series of chalcogenadiazole fused indolo[2,3-a]carbazoles 1–3 were prepared, wherein a chalcogen atom was varied from oxygen (O) to sulphur (S) to selenium (Se) in the chalcogenadiazole unit. A Cadogan ring closing reaction was used as the key synthetic step for the preparation of 1–3. The chalcogen alteration (O, S and Se) led to a significant change in the structural, optical and electrochemical properties of 1–3, indicating a subsequent change in their HOMO–LUMO energy levels. Density functional theory (DFT) calculations were performed to further support the experimentally observed trend.
![Graphical abstract: Effects of chalcogen atom variation in chalcogenadiazole fused indolo[2,3-a]carbazoles](http://scimg.chem960.com/usr/1/C7NJ04661H.jpg)
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Journal Name：New Journal of Chemistry
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CAS no.: 89640-58-4
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