Heterocyclic compound, organic light-emitting device including the same, and electronic apparatus including the organic light-emitting device
US-2024373662-A1 · Nov 7, 2024 · US
Electroluminescent compositions
US9902903B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9902903-B2 |
| Application number | US-201314416755-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 26, 2013 |
| Priority date | Jul 27, 2012 |
| Publication date | Feb 27, 2018 |
| Grant date | Feb 27, 2018 |
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- Title
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Abstract
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The present invention relates to compositions capable of emitting circularly polarized electroluminescence comprising an electroluminescent polymer and a chiral dopant, processes for the synthesis of such compositions and light emitting devices incorporating such compositions.
First claim
Opening claim text (preview).
The invention claimed is: 1. A composition comprising an electroluminescent polymer and a scalemic chiral dopant. 2. The composition of claim 1 , wherein the chiral dopant is a helical compound. 3. The composition of claim 1 , wherein the chiral dopant is a helicene, a helicenoidal compound, a helical peptide or a DNA molecule. 4. The composition of claim 1 , wherein the chiral dopant is an axially chiral biaryl compound. 5. The composition of claim 1 , wherein the chiral dopant is 1-aza[6]helicene or 7-helicene. 6. The composition of claim 1 , wherein the chiral dopant has a M W of up to 4000. 7. The composition of claim 1 , wherein the electroluminescent polymer is a polymer, the electroluminescence of which in the absence of chiral dopant is not circularly polarized. 8. The composition of claim 1 , wherein the electroluminescent polymer is an achiral electroluminescent polymer. 9. The composition of claim 1 , wherein the electroluminescent polymer is a polyfluorene or poly(p-phenylene vinylene) derivative. 10. The composition of claim 9 , wherein the electroluminescent polymer is poly[9,9-dioctylfluorene-co-benzothiadiazole]. 11. The composition of claim 1 , wherein the chiral dopant is present within the composition at a doping ratio of up to 55% (by weight). 12. The composition of claim 11 , wherein the chiral dopant is present at a doping ratio of 0.1 to 55%.
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Classifications
containing nitrogen and sulfur as heteroatoms · CPC title
characterised by the chemical or physical composition or the arrangement of the electroluminescent material {, or by the simultaneous addition of the electroluminescent material in or onto the light source} · CPC title
containing one nitrogen atom as the heteroatom · CPC title
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US9902903B2 cover?
- The present invention relates to compositions capable of emitting circularly polarized electroluminescence comprising an electroluminescent polymer and a chiral dopant, processes for the synthesis of such compositions and light emitting devices incorporating such compositions.
- Who is the assignee on this patent?
- Imperial Innovations Ltd
- 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 27 2018 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).