Robust phosphorescent platinum(II) complexes with tetradentate O∧N∧C∧N ligands: high efficiency OLEDs with excellent efficiency stability

Steven C. F. Kui; Pui Keong Chow; Gang Cheng; Chi-Chung Kwok; Chun Lam Kwong; Kam-Hung Low; Chi-Ming Che

doi:10.1039/C2CC37862K

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Robust phosphorescent platinum(ii) complexes with tetradentate O^∧N^∧C^∧N ligands: high efficiency OLEDs with excellent efficiency stability†

Steven C. F. Kui,^a Pui Keong Chow,^a Gang Cheng,^a Chi-Chung Kwok,^a Chun Lam Kwong,^a Kam-Hung Low^a and Chi-Ming Che*^a

Author affiliations

* Corresponding authors

^a State Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
E-mail: cmche@hku.hk

Abstract

The Pt(II) complexes (1–3) bearing tetradentate O^∧N^∧C^∧N ligands display high emission quantum yields (0.76–0.90) and good thermal stability (T_d > 400 °C). Complex 3 is an excellent green phosphorescence dopant for OLEDs with excellent efficiency and low efficiency roll-off (η_L, η_Ext(max) = 66.7 cd A⁻¹, 18.2%; η_L, η_Ext (1000 cd m⁻²) = 65.1 cd A⁻¹, 17.7%).

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Article information

DOI: https://doi.org/10.1039/C2CC37862K
Article type: Communication
Submitted: 30 Oct 2012
Accepted: 19 Dec 2012
First published: 16 Jan 2013

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Chem. Commun., 2013,49, 1497-1499

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Robust phosphorescent platinum(II) complexes with tetradentate O^∧N^∧C^∧N ligands: high efficiency OLEDs with excellent efficiency stability

S. C. F. Kui, P. K. Chow, G. Cheng, C. Kwok, C. L. Kwong, K. Low and C. Che, Chem. Commun., 2013, 49, 1497 DOI: 10.1039/C2CC37862K

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