Highly Efficient Green Solution Processable OLEDs Based on a Phosphorescent Κ3-(N^C^C)Gold(III)-Alkynyl Complex

Gold(III) complexes are emerging as promising phosphorescent emitters for high-efficiency OLEDs. However, despite recent ad-vances in the coordination and organometallic chemistry of gold, only few compounds have been successful in high-performance devices. Here, we disclose the synthesis of a new phosphorescent Κ3-(N^C^C)-aminophenylalkynyl-N,N’-bisfluorenyl-Au(III) complex which exhibits a current efficiency (ηCE) of 56.4 cd A-1 and an external quantum efficiency (ηext) of 16.2% in solution processable OLED devices. Our findings establish a new branch of gold(III)-alkyne compounds with remarkable electroluminescent performance for potential application in highly-efficient OLEDs.