Chiral iridium(III) complexes in light-emitting electrochemical cells : exploring the impact of stereochemistry on the photophysical properties and device performances
Date
14/12/2016Author
Funder
Grant ID
EP/M02105X/1
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Abstract
Despite hundreds of cationic bis-cyclometalated iridium(III) complexes having been explored as emitters for light-emitting electrochemical cells (LEECs), uniformly their composition has been in the form of a racemic mixture of Λ and Δ enantiomers. The investigation of LEECs using enantiopure iridium(III) emitters, however, remains unprecedented. Herein, we report the preparation, the crystal structures and the optoelectronic properties of two families of cyclometalated iridium(III) complexes of the form of [(C^N)2Ir(dtBubpy)]PF6 (where dtBubpy is 4,4'-di-tert-butyl-2,2'-bipyridine) in both their racemic and enantiopure configurations. LEEC devices using Λ and Δ enantiomers as well as the racemic mixture of both families have been prepared and the device performances were tested. Importantly, different solid-state photophysical properties exist between enantiopure and racemic emitters, which are also reflected in the device performances.
Citation
Rota Martir , D , Momblona , C , Pertegás , A , Cordes , D B , Slawin , A M Z , Bolink , H J & Zysman-Colman , E 2016 , ' Chiral iridium(III) complexes in light-emitting electrochemical cells : exploring the impact of stereochemistry on the photophysical properties and device performances ' , ACS Applied Materials & Interfaces , vol. 8 , no. 49 , pp. 33907-33915 . https://doi.org/10.1021/acsami.6b14050
Publication
ACS Applied Materials & Interfaces
Status
Peer reviewed
ISSN
1944-8244Type
Journal article
Rights
Copyright 2016 American Chemical Society. This is an open access article published under a Creative Commons Attribution (CC-BY) License, which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.
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