Lessons learned in tuning the optoelectronic properties of phosphorescent iridium(III) complexes
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This perspective illustrates our approach in the design of heteroleptic cationic iridium(III) complexes for optoelectronic applications, especially as emitters in electroluminescent devices. We discuss changes in the photophysical properties of the complexes as a consequence of modification of the electronics of either the cyclometalating (C^N) or the ancillary (N^N) ligands. We then broach the impact on these properties as a function of modification of the structure of both types of ligands. We explain trends in the optoelectronic behaviour of the complexes using a combination of rationally designed structure-property relationship studies and theoretical modelling that serves to inform subsequent ligand design. However, we have found cases where the design paradigms do not always hold true. Nevertheless, all these studies contribute to the lessons we have learned in the design of heteroleptic cationic phosphorescent iridium(III) complexes.
Henwood , A F & Zysman-Colman , E 2017 , ' Lessons learned in tuning the optoelectronic properties of phosphorescent iridium(III) complexes ' , Chemical Communications , vol. 53 , no. 5 , pp. 807-826 . https://doi.org/10.1039/C6CC06729H
© 2016 the Authors. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1039/C6CC06729H
DescriptionEZ-C acknowledges past and present group members for their tireless efforts and enthusiasm and the University of St Andrews for financial support. The authors would like to thank the Engineering and Physical Sciences Research Council for financial support for Adam Henwood (EPSRC DTG Grants: EP/J500549/1; EP/K503162/1; EP/L505097/1)
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