PREPARATION OF A FAC-ISOMER FOR A TRIS HOMOLEPTIC METAL COMPLEX
申请人:Van Pee Veronique
公开号:US20130331577A1
公开(公告)日:2013-12-12
The present application provides a use of a mixture comprising less than 75 vol. % of an organic solvent and more than 25 vol. % of water in a preparation of a fac-isomei of a tris homoleptic metal complex, in the presence or the absence of an added salt, and with the proviso that when an added salt contains at least two oxygen atoms, it is used in an amount such that the molar ratio of the salt to the metal in a metal compound used as starting material is less than 1. The present application also provides a method of preparing a fac-isomer for a tris homoleptic metal complex using the mixture.
This invention pertains to novel phosphorescent light emitting materials and more particularly to blue-emitting materials involving metallic complexes wherein at least one ligand comprises a 9,9'-spirobifluorenyl and/or a 9,9-diphenyl-9H-fluorenyl moiety.