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US-2024425484-A1 · Dec 26, 2024 · US
Carbazole end capped bipyridine compounds and process for preparation thereof
US9493488B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9493488-B2 |
| Application number | US-201213985085-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 14, 2012 |
| Priority date | Feb 14, 2011 |
| Publication date | Nov 15, 2016 |
| Grant date | Nov 15, 2016 |
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Abstract
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The present invention is to provide highly solid state emissive fluorophores of the formula 1 and 2 useful for the solid state lighting. The formula 1 and 2 have good solid state emission in blue and green region respectively. The zinc complexes of formula 1A and 2A have yellow and red emission respectively in solid state. The present invention also provide high solid state emissive assay of formula 1 and 2 to convert UV light into visible light by coating the color tunable materials on the 365-nm emitting solid state LED. The present invention further provides carbazole end-capped bipyridine for screening of metal salts with different counterions in solutions. The discrimination of the various metal salts can be monitored by noting the fluorescence change in solution. The zinc salts with different counterions have different emission color in solution. The present invention also develop a new two photon active fluorescent Zn 2+ specific probe for detecting Zn 2+ in cellular environments. Assay with formula 3 is used as a fluorescent probe for two photon imaging of Zn 2+ ions in HeLa cells. The high two photon absorption cross section and fluorescence quantum yield of formula 3 made it as a useful probe for detecting Zn 2+ in cellular environment by two photon excited fluorescence imaging.
First claim
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We claim: 1. A carbazole end capped bipyridine compound of formula A 2. The carbazole end capped bipyridine compounds as claimed in claim 1 , wherein the structural formulae of the representative compounds are:
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Classifications
Wavelength conversion materials · CPC title
- C07D401/14Primary
containing three or more hetero rings · CPC title
- C07F3/06Primary
Zinc compounds · CPC title
containing organic luminescent materials · CPC title
characterised by the electroluminescent [EL] layers · CPC title
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- What does patent US9493488B2 cover?
- The present invention is to provide highly solid state emissive fluorophores of the formula 1 and 2 useful for the solid state lighting. The formula 1 and 2 have good solid state emission in blue and green region respectively. The zinc complexes of formula 1A and 2A have yellow and red emission respectively in solid state. The present invention also provide high solid state emissive assay of fo…
- Who is the assignee on this patent?
- Ayyappanpillai Ajayaghosh, Kizhumuri Divya, Sampath Srinivasan, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification C07D401/14. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Nov 15 2016 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).