Furan-containing double tetraoxa[7]helicene and its radical cation
| Autor: | Akimitsu Narita, Haoliang Liu, Ji Ma, Klaus Müllen, Qiang Chen, Yunbin Hu, Hao Chang, Xiao-Yu Cao, Pengcai Liu, Evgenia Dmitrieva, Alexey A. Popov, Yingping Zou, Xiao-Ye Wang, Hongjian Peng, Piao He |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Circular dichroism
Resolution (electron density) Metals and Alloys General Chemistry Catalysis Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound Crystallography chemistry Radical ion Helicene Furan Materials Chemistry Ceramics and Composites Enantiomer Absorption (chemistry) Luminescence |
| Zdroj: | Chemical Communications. 56(96):15181-15184 |
| ISSN: | 1359-7345 |
| Popis: | An unprecedented furan-based double oxa[7]helicene 1 was achieved, featuring a stable twisted conformation with π-overlap at both helical ends. The excellent conformational stability allowed for optical resolution of 1, which provided a pair of enantiomers exhibiting pronounced mirror-imaged circular dichroism and circularly polarized luminescence activity. The radical cation of 1 was obtained by chemical oxidation as evidenced by UV-Vis-NIR absorption, electron paramagnetic resonance spectroscopy and in situ spectroelectrochemistry. The present work is the starting point for the investigation of open-shell oxahelicenes. |
| Databáze: | OpenAIRE |
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