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Highly Deformed o-Carborane Functionalised Non-linear Polycyclic Aromatics with Exceptionally Long C-C Bonds.
- Source :
-
Chemistry (Weinheim an der Bergstrasse, Germany) [Chemistry] 2021 Jan 26; Vol. 27 (6), pp. 1970-1975. Date of Electronic Publication: 2020 Dec 23. - Publication Year :
- 2021
-
Abstract
- The effect of substituting o-carborane into the most sterically hindered positions of phenanthrene and benzo(k)tetraphene is reported. Synthesised via a Bull-Hutchings-Quayle benzannulation, the crystal structures of these non-linear acenes exhibited the highest aromatic deformation parameters observed for any reported carborane compound to date, and among the largest carboranyl C-C bond length of all organo-substituted o-carboranes. Photoluminescence studies of these compounds demonstrated efficient intramolecular charge-transfer, leading to aggregation induced emission properties. Additionally, an unusual low-energy excimer was observed for the phenanthryl compound. These are two new members of the family of carborane-functionalised non-linear acenes, notable for their peculiar structures and multi-luminescent properties.<br /> (© 2020 The Authors. Published by Wiley-VCH GmbH.)
Details
- Language :
- English
- ISSN :
- 1521-3765
- Volume :
- 27
- Issue :
- 6
- Database :
- MEDLINE
- Journal :
- Chemistry (Weinheim an der Bergstrasse, Germany)
- Publication Type :
- Academic Journal
- Accession number :
- 33044792
- Full Text :
- https://doi.org/10.1002/chem.202004517