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US8957217B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8957217-B2 |
| Application number | US-201213482448-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 29, 2012 |
| Priority date | May 31, 2011 |
| Publication date | Feb 17, 2015 |
| Grant date | Feb 17, 2015 |
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Abstract
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The subject invention is directed to tetradentate bis-(NHC carbenes) alkylene ligand Pt(II) complexes, tetradentate bis-(NHC carbenes) alkylene ligands, and its ligand precursors, for preparation of the Pt(II) complexes. The Pt(II) complexes show a deep blue emission with an improved quantum efficiency and can be used for fabrication of OLEDs with an electroluminescence layer that comprise the bis-(NHC carbenes) alkylene ligand Pt(II) complexes.
First claim
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We claim: 1. A tetradentate bis-(NHC carbenes) alkylene ligand Pt(II) complex, comprising the structure: wherein R 1 -R 8 are independently hydrogen, fluoro, chloro, bromo, iodo, alkyl, substituted alkyl, cycloalkyl, or substituted cycloalkyl; wherein at least one of R 1 -R 8 is not hydrogen; and wherein X is O. 2. The tetradentate bis…
Assignees
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Chemistry & Metallurgy · mapped topic
- C09K11/06Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Electricity · mapped topic
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- What does patent US8957217B2 cover?
- The subject invention is directed to tetradentate bis-(NHC carbenes) alkylene ligand Pt(II) complexes, tetradentate bis-(NHC carbenes) alkylene ligands, and its ligand precursors, for preparation of the Pt(II) complexes. The Pt(II) complexes show a deep blue emission with an improved quantum efficiency and can be used for fabrication of OLEDs with an electroluminescence layer that comprise the …
- Who is the assignee on this patent?
- Che Chi Ming, Li Kai, Univ Hong Kong, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification C09K11/06. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Feb 17 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).