ArticleAdvanced science (Weinheim, Baden-Wurttemberg, Germany)2025
Dual Regulation of Molecular Rigidity and Orbital Engineering of Pt(II) Emitters for High-Performance Deep-Blue OLEDs.
Article in Advanced science (Weinheim, Baden-Wurttemberg, Germany), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Pure-Blue Emission at the Edge of the CIE Diagram: Carbazolyl NHC Platinum Butterfly Complexes with Near-Unity Quantum Yield and Their Application in Organic Light-Emitting Diodes.Inorganic chemistry · 2026Article
- Dual Regulation of Molecular Rigidity and Orbital Engineering of Pt(II) Emitters for High-Performance Deep-Blue OLEDs.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Article
- Introduction of a 4-Hexyl-2-thienyl Substituent on Pyridine Rings as a Route for Brightly Luminescent 1,3-Di-(2-pyridyl)benzene Platinum(II) Complexes.Molecules (Basel, Switzerland) · 2025Article
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Authors and funding
5 authors.
Funding
Abstract
Blue phosphorescent organic light-emitting diodes (PhOLEDs) face critical challenges in terms of low color purity and severe efficiency roll-off. In this study, four novel tetradentate Pt(II) emitters (PtCY, PtCY-F, PtCY-tBu, PtCY-tBuF) are designed through a synergistic strategy of molecular orbital engineering and steric hindrance effect. By introducing a bulky diisopropylbiphenyl (diPrPh) group at the N-heterocyclic carbene (NHC) moiety to increase molecular rigidity and suppress intermolecular interactions, the Pt(II) emitters achieve narrowband deep-blue emission (452-457 nm) in dichloromethane, with full width at half maximum (FWHM) values of 18-23 nm. Combined with the introduction of fluorine atoms (─F) away from the lowest unoccupied molecular orbital (LUMO) distribution, the external quantum efficiency (EQE) is improved while avoiding the breakage of the C─F bond. PtCY-tBuF-based device B4 achieved a high maximum luminance of 45621 cd m
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