Supertwistacene: A Helical Graphene Nanoribbon.
Shuang MaJiajian GuChaojun LinZhixing LuoYanpeng ZhuJiaobing WangPublished in: Journal of the American Chemical Society (2020)
This work describes a synthetic chiral graphene nanoribbon, named supertwistacene 1. It has four superbenzene (HBC) units linearly fused in a helical manner. The structure of 1, 4.3 nm in length, with an end-to-end twist of 117°, was confirmed by single-crystal X-ray diffraction. In contrast to various twistacene compounds and their analogues, 1 has a very stable configuration. It resists thermal isomerization even when being heated at 200 °C for 16 h. Enantiopure 1 obtained by chiral HPLC shows distinct CD signals in a broad spectral range until 600 nm. In addition, two smaller congeners of 1, the trimer 2 and the dimer 3, were also prepared and systematically investigated. Combining theoretical and experimental studies on 1-3 presents a big picture on their (chir)optical and electronic characteristics.
Keyphrases
- high resolution
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- capillary electrophoresis
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- ms ms
- ionic liquid
- room temperature
- carbon nanotubes
- optical coherence tomography
- magnetic resonance
- mass spectrometry
- simultaneous determination
- epithelial mesenchymal transition
- walled carbon nanotubes
- electron microscopy
- big data
- molecular docking
- high performance liquid chromatography
- atomic force microscopy
- high speed
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- machine learning
- solid phase extraction
- magnetic resonance imaging
- nk cells
- crystal structure
- artificial intelligence
- single molecule