Substituted 1,2,3-Triylidenetris(cyanomethanylylidene) Cyclopropanes for VTE, Electronic Devices and Semiconducting Materials Using Them
US-2017373251-A1 · Dec 28, 2017 · US
Organic light emitting material and organic light emitting device using the same
US8940409B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8940409-B2 |
| Application number | US-65460209-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 24, 2009 |
| Priority date | Dec 30, 2008 |
| Publication date | Jan 27, 2015 |
| Grant date | Jan 27, 2015 |
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Abstract
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Disclosed is an organic light emitting material having the following chemical formula, for improving luminous efficiency, where R1, R2, R3 and R4 denote materials selected from an aromatic group with 6-24 carbon atoms (C6-C24), the group being independently substituted or unsubstituted, preferably, an aromatic group with 6-24 carbon atoms (C6-C24), the group consisting of trimethylsilane (TMS), CN, halogen (F, Cl, Br) alkyl groups with 1-4 carbon atoms (C1-C4).
First claim
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What is claimed is: 1. An organic light emitting material having the following chemical formula, where R1=R3, R2=R4, and R1≠R2, each of R1 and R3 is phenyl substituted with at least one selected from the group consisting of trimethylsilane (TMS), CN, halogen, alkyl group with 1 to 4 carbon atoms (C1-C4) and Phenyl and each of R2 and R4 is anthracene or phenanthrene, each of whi…
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Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Chemistry & Metallurgy · mapped topic
Electricity · mapped topic
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- What does patent US8940409B2 cover?
- Disclosed is an organic light emitting material having the following chemical formula, for improving luminous efficiency, where R1, R2, R3 and R4 denote materials selected from an aromatic group with 6-24 carbon atoms (C6-C24), the group being independently substituted o…
- Who is the assignee on this patent?
- Bin Jong-Kwan, Cha Soon-Wook, Lee Seung-Jae, and 6 more
- What technology area does this patent fall under?
- Primary CPC classification C07C255/51. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 27 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).