Highly Efficient Green Solution Processable Organic Light-Emitting Diodes Based on a Phosphorescent κ3‑(N^C^C)Gold(III)-Alkynyl Complex

Gold­(III) complexes are emerging as promising phosphorescent emitters for high-efficiency organic light-emitting diodes (OLEDs). However, despite recent advances 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.