Spiro-chiral tetradentate platinum (II) and / or palladium (II) complex circularly polarized luminescent material based on pyridine-carbazole-phenyl carbene and derived structure thereof, and use thereof
By designing pyridine-carbazole-phenylcarbene-derived chiral tetradentate platinum(II) and palladium(II) complexes, the stability and luminescence efficiency problems of existing materials were solved, enabling the application of highly stable and low-cost circularly polarized luminescent materials.
Patent Information
- Application Number
- PCT/CN2025/121523
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-09-19
- Filing Date
- 2025-09-16
- Publication Date
- 2026-03-26
AI Technical Summary
Existing cyclic platinum(II) and palladium(II) complex materials have shortcomings in terms of chemical stability, thermal stability and circularly polarized light emission properties, making it difficult to apply them to stable and efficient circularly polarized light emission OLED devices.
We designed helical tetradentate platinum(II) and/or palladium(II) complexes based on pyridine-carbazole-phenylcarbene and their derivatives, and induced optically pure helical configurations by central chiral substitution of pyridine. We then utilized the steric hindrance effect to improve the stability and circularly polarized luminescence of the materials.
A circularly polarized luminescent material with high chemical and thermal stability has been developed, which does not require chiral separation and is suitable for circularly polarized luminescent elements, reducing the preparation cost and improving the luminescence quantum efficiency.