Universal Display Corporation

Elena Sheina

Tyler Fleetham

Hsiao-Fan Chen

Jui-Yi Tsai

Alexey Borisovich Dyatkin

Pierre-Luc T Boudreault

Chun Lin

Zhiqiang Ji

Jerald Feldman

Peter Wolohan

Morgan C Macinnis

Rasha Hamze

Tongxiang Lu

Joseph A Macor

Sean Michael Ryno

Muazzam Idris

Neil Palmer

Mahesh Paudyal

Provided are compounds having the structure of Formula I: Formula I;

Organic electroluminescent materials and devices

Provided are compounds having the structure of Formula I: wherein rings A, B, and D are each independently a 5-membered or 6-membered carbocyclic or heterocyclic ring; X-Xare each independently C or N; Yis selected from the group consisting of a direct bond, O, S, Se, NR, SiRR', CRR′, and P(O)R; R, R′, R, R, R, and Reach independently represents mono to the maximum allowable substitution, or no substitution; each R, R′, R, R, R, and Ris independently a hydrogen or a substituent; and any two adjacent groups of R, R, R, and Rmay be joined or fused to form a ring Also provided are formulations comprising these compounds. Further provided are OLEDs and related consumer products that utilize these compounds.

A compound comprising a ligand Lcomprising a moiety L having a structure of Formula I is provided. In Formula I, Lcoordinated to a metal M; Ais selected from B, N, P, P═O, P═S, Al, Ga, SiR″, GeR″, and SnR″; where rings A, B, and C are 5- or 6-membered rings; Y, Y, and Yare selected from direct bonds, the metal M, and a variety of linkers; a+b+c=2 or 3; and one of a number of specific conditions is met. OLED devices, consumer products, and formulations including the compound are also provided.

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Langhorne, PA, United States of America

Elena Sheina