Novel Bipolar Phenanthroimidazole Derivative Design for a Nondoped Deep‐Blue Emitter with High Singlet Exciton Yields

Abstract

Both the “D–A” and “two-in-one” strategies are simultaneously applied in designing deep-blue emitters. Two emitters show deep-blue emission with CIE coordinates of (0.15, 0.08) and (0.15, 0.06). Both of them exhibit excellent electro­luminescence performance, high singlet exciton yields (31%), and a small efficiency roll-off (external quantum efficiencies: less than 12% at 1000 cd m−2). As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.