Patent ID: 7632576

Claim:
A method of manufacturing a light-emitting device comprising: forming a light emitting element by depositing a solution comprising at least one compound having the formula (I): CORE-[DENDRITE(-Q) a ] n (I) in which CORE comprises an iridium complex, n represents an integer of at least 1, Q is a proton or a surface group, a is an integer and DENDRITE, which may be the same or different if n is greater than 1, represents a conjugated dendritic structure comprising aryl and/or heteroaryl groups directly connected to each other via bonds between sp 2 hybridized ring atoms of said aryl or heteroaryl groups, CORE terminating in the first single bond which is connected to an sp 2 hybridized ring atom of an aryl group or heteroaryl group to which more than one conjugated dendritic branch is attached, said atom forming part of the DENDRITE, at least one of CORE and DENDRITE being luminescent; provided that the compound is not wherein each Z is a group of formula: