期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 60, 期 33, 页码 18073-18081出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202103253
关键词
circular dichroism; helicenes; luminescence; nanographene; polycyclic aromatic hydrocarbons
资金
- Deutsche Forschungsgemeinschaft (DFG) [182849149, SFB953]
- Graduate School of Molecular Science (GSMS)
- Royal Society for a University Research Fellowship
- Projekt DEAL
A straightforward synthetic route was designed to create a family of pi-extended helicenes called superhelicenes. By altering the 5-membered ring, a versatile library of molecular building blocks was realized, allowing for easy tuning of both structure and features. Physico-chemical characterizations confirmed the concept, showing potential for outstanding hole transporting properties in charge-carrier mobilities.
We designed a straightforward synthetic route towards a full-fledged family of pi-extended helicenes: superhelicenes. They have two hexa-peri-hexabenzocoronenes (HBCs) in common that are connected via a central five-membered ring. By means of structurally altering this 5-membered ring, we realized a versatile library of molecular building blocks. Not only the superhelicene structure, but also their features are tuned with ease. In-depth physico-chemical characterizations served as a proof of concept thereof. The superhelicene enantiomers were separated, their circular dichroism was measured in preliminary studies and concluded with an enantiomeric assignment. Our work was rounded-off by crystal structure analyses. Mixed stacks of M- and P-isomers led to twisted molecular wires. Using such stacks, charge-carrier mobilities were calculated, giving reason to expect outstanding hole transporting properties.
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