Abstract
A series of saturated-red emitting iridium complexes with bifunctional charge-transporting peripheral groups were designed and synthesized. The relationship between the structures and their photophysical, electrochemical and electrophosphorescent properties was investigated. Through the incorporation of hole-transporting triphenylamine units and/or electron-transporting phosphine oxide groups to the cyclometalating ligand, the new complexes exhibited good thermal stabilities with high glass-transition temperatures up to 284°C, while maintained the saturated-red emission of the center core. Besides, the peripheries sufficiently protect the emissive core from the intermolecular interactions. Solution-processed single-layer phosphorescent organic light-emitting device (PhOLED) based on phosphor R2 showed a maximum external quantum efficiency of 7.6% with Commission Internationale de l’Eclairage coordinates of (0.68, 0.30).
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
