TY - JOUR
T1 - Correlating the Structural and Photophysical Properties of
Ortho
,
Meta
, and
Para
-Carboranyl–Anthracene Dyads
AU - Marsh, Adam V.
AU - Dyson, Matthew J.
AU - Cheetham, Nathan J.
AU - Bidwell, Matthew
AU - Little, Mark
AU - White, Andrew J. P.
AU - Warriner, Colin N.
AU - Swain, Anthony C.
AU - McCulloch, Iain
AU - Stavrinou, Paul N.
AU - Meskers, Stefan C. J.
AU - Heeney, Martin
N1 - 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.
PY - 2020/6/23
Y1 - 2020/6/23
N2 - 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.
AB - 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.
UR - http://hdl.handle.net/10754/663896
UR - https://onlinelibrary.wiley.com/doi/abs/10.1002/aelm.202000312
UR - http://www.scopus.com/inward/record.url?scp=85087113587&partnerID=8YFLogxK
U2 - 10.1002/aelm.202000312
DO - 10.1002/aelm.202000312
M3 - Article
SN - 2199-160X
SP - 2000312
JO - Advanced Electronic Materials
JF - Advanced Electronic Materials
ER -