Abstract
The role of the carborane isomer is investigated on the structural and photophysical properties of molecules comprising a carborane cluster and a conjugated organic moiety is investigated by synthesizing isomeric o -, m -, and p -carboranyl-anthracene donor–acceptor dyads. While appending a carborane leads to emission from a low energy intramolecular charge transfer state for the o -isomer, as well as emission from an excited state localized on the anthracene, this is not the case for the m - and p -carborane derivatives. This difference is attributed to a lower electron affinity for the latter two isomers. However, adding both m - and p - deforms the aromatic backbone and increases its structural rigidity, reducing non-radiative decay pathways and hence enhancing photoluminescence quantum efficiency relative to anthracene.
Original language | English (US) |
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Pages (from-to) | 2000312 |
Journal | Advanced Electronic Materials |
DOIs | |
State | Published - Jun 23 2020 |
Bibliographical note
KAUST Repository Item: Exported on 2020-10-01Acknowledgements: The authors thank the EPRSC for funding (EP/G037515/1 & EP/ L016702/1) and AWE for their input and financial support of A.V.M. The authors also thank the Marie Skłodowska-Curie Actions Innovative Training Networks “H2020-MSCA-ITN-2014 INFORM-675867” for funding.