Add time:07/17/2019 Source:sciencedirect.com
A series blue phosphorescent emitting materials based on 2-(fluoro substituted phenyl)-4-methylpyridine as the cyclometalated ligands have been synthesized and characterized. The complexes have the general structure (C^N)2Ir(pic), where C^N is a monoanionic cyclometalating ligand (e.g., 2-(2,4-difluorophenyl)-4-methylpyridine (24f2pmpyH), 2-(3,4-difluorophenyl)-4-methylpyridine (34f2pmpyH), 2-(3,5-difluorophenyl)-4-methylpyridine (35f2pmpyH), and 2-(3,4,5-trifluorophenyl)-4-methyl-pyridine (345f3pmpyH)), pic is 2-picolinic acid. The absorption, emission, cyclic voltammetry and thermostability of the complexes were systematically investigated. The (46f2pmpy)2Ir(pic) has been characterized using X-ray crystallography and the electronic ground state calculated using B3LYP density functional theory. HOMO levels are a mixture of Ir and 2-(fluoro phenyl)-4-methylpyridine ligand orbitals, while the LUMO is predominantly pic ligand based. Introduction of fluorine atoms and methyl group into ppy ligand and changing in position of F substituents in phenyl ring can finely tune emission of the complexes, showing bright blue-to-green luminescence at a wavelength of 463–501 nm at room temperature in CH2Cl2.
We also recommend Trading Suppliers and Manufacturers of 2-(4-Fluoro-phenyl)-pyrimidine-5-carbonitrile (cas 960198-60-1). Pls Click Website Link as below: cas 960198-60-1 suppliers
About|Contact|Cas|Product Name|Molecular|Country|Encyclopedia
Message|New Cas|MSDS|Service|Advertisement|CAS DataBase|Article Data|Manufacturers | Chemical Catalog
©2008 LookChem.com,License: ICP
NO.:Zhejiang16009103
complaints:service@lookchem.com Desktop View