Correlating the Structural and Photophysical Properties of Ortho , Meta , and Para -Carboranyl–Anthracene Dyads

Adam V. Marsh, Matthew J. Dyson, Nathan J. Cheetham, Matthew Bidwell, Mark Little, Andrew J. P. White, Colin N. Warriner, Anthony C. Swain, Iain McCulloch, Paul N. Stavrinou, Stefan C. J. Meskers, Martin Heeney

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

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 languageEnglish (US)
Pages (from-to)2000312
JournalAdvanced Electronic Materials
DOIs
StatePublished - Jun 23 2020

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: 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.

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