Stereospecific Synthesis and Photophysical Properties of Propeller-Shaped C\(_{90}\)H\(_{48}\) PAH
Please always quote using this URN: urn:nbn:de:bvb:20-opus-208682
- Herein, we have synthesized an enantiomerically pure propeller‐shaped PAH, C\(_{90}\)H\(_{48}\), possessing three [7]helicene and three [5]helicene subunits. This compound can be obtained in gram quantities in a straightforward manner. The photophysical and chiroptical properties were investigated using UV/Vis absorption and emission, optical rotation and circular dichroism spectroscopy, supported by DFT calculations. The nonlinear optical properties were investigated by two‐photon absorption measurements using linearly and circularly polarizedHerein, we have synthesized an enantiomerically pure propeller‐shaped PAH, C\(_{90}\)H\(_{48}\), possessing three [7]helicene and three [5]helicene subunits. This compound can be obtained in gram quantities in a straightforward manner. The photophysical and chiroptical properties were investigated using UV/Vis absorption and emission, optical rotation and circular dichroism spectroscopy, supported by DFT calculations. The nonlinear optical properties were investigated by two‐photon absorption measurements using linearly and circularly polarized light. The extremely twisted structure and packing of the homochiral compound were investigated by single‐crystal X‐ray diffraction analysis.…
| Author: | Fangyuan Zhang, Evripidis Michail, Fridolin Saal, Ana-Maria Krause, Prince Ravat |
|---|---|
| URN: | urn:nbn:de:bvb:20-opus-208682 |
| Document Type: | Journal article |
| Faculties: | Fakultät für Chemie und Pharmazie / Institut für Organische Chemie |
| Language: | English |
| Parent Title (English): | Chemistry - A European Journal |
| Year of Completion: | 2019 |
| Volume: | 25 |
| Issue: | 71 |
| Pagenumber: | 16241-16245 |
| Source: | Chemistry - A European Journal (2019) 25(71):16241-16245. DOI: 10.1002/chem.201904962 |
| DOI: | https://doi.org/10.1002/chem.201904962 |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 54 Chemie / 547 Organische Chemie |
| Tag: | chirality; enantiomers; helicenes; polycyclic aromatic hydrocarbons; stereospecific sythesis |
| Release Date: | 2020/10/22 |
| Licence (German): |  CC BY-NC-ND: Creative-Commons-Lizenz: Namensnennung, Nicht kommerziell, Keine Bearbeitungen 4.0 International |