| Autor: |
Yang, Lin, Ju, Yang-Yang, Medel, Miguel A., Fu, Yubin, Komber, Hartmut, Dmitrieva, Evgenia, Zhang, Jin-Jiang, Obermann, Sebastian, Campaña, Araceli G., Ma, Ji, Feng, Xinliang |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
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| Druh dokumentu: |
Článek |
| ISSN: |
1521-3773 |
| DOI: |
10.1002/anie.202216193 |
| Popis: |
The precision synthesis of helical bilayer nanographenes (NGs) with new topology is of substantial interest because of their exotic physicochemical properties. However, helical bilayer NGs bearing non-hexagonal rings remain synthetically challenging. Here we present the efficient synthesis of the first helical bilayer nonbenzenoid nanographene (HBNG1) from a tailor-made azulene-embedded precursor, which contains a novel [10]helicene backbone with two embedded heptagons. Single-crystal X-ray analysis reveals its highly twisted bilayer geometry with a record small interlayer distance of 3.2 Å among the reported helical bilayer NGs. Notably, the close interlayer distance between the two layers offers intramolecular through-space conjugation as revealed by in situ spectroelectrochemistry studies together with DFT simulations. Furthermore, the chiroptical properties of the P/M enantiomers of HBNG1 are also evaluated by circular dichroism and circularly polarized luminescence. |
| Databáze: |
Networked Digital Library of Theses & Dissertations |
| Externí odkaz: |
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