Spiro-containing platinum(II) emitters with tunable emission energies and syntheses thereof
US11958870B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2019 |
| Grant date | Apr 16, 2024 |
| Priority date | — |
| Expiry date | Aug 8, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An asymmetric tetradentate metal complex of a N{circumflex over ( )}C{circumflex over ( )}C{circumflex over ( )}N comprising tetradentate ligand has a metal connected to binding sites which are connected to each other via three or four covalent bonds that can be either single or double bonds with bridging linkers reside between C{circumflex over ( )}C and C{circumflex over ( )}N moieties. These linkers result in three-dimension metal complexes with distorted square planar geometries. The four donor atoms coordinate to a metal center. Upon metal binding a 5-6-6 membered metallocycle is formed upon chelation including a first nitrogen donor bond, a first metal-carbon bond, a second metal-carbon bond, and a second nitrogen donor bond. The light emission from these metal complexes can be tuned by the ligand structure over the entire visible spectrum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.