Patent ID: 8319213

Claim:
A light-emitting device incorporating as its light emitting element at least one compound having the formula (I): CORE-[DENDRITE(-Q) a ] n (I) in which CORE is a metallic chromophore which is a metalloporphyrin, 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 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 (hetero)aryl group to which more than one conjugated dendritic branch is attached, said atom forming part of the DENDRITE, the CORE and/or DENDRITE being luminescent, and wherein the light emitting element is obtainable by deposition using solution processing.