| abstract |
The present invention relates to a bi-nuclear phosphorescent emitter according to formula I wherein the emitter comprises metal atoms M1 and M2, fluorescent emitter ligands LF, LF', terminal ligands LT, LT' and bridging ligands Lv, Lv' wherein M1 and M2 are chosen independently of one another from the group of heavy main group metals comprising In, TI, Sn, Pb, Sb, and Bi; LF, LF' are chosen independently of one another from the group comprising substituted or non-substituted C6-C70 aromatics or heteroaromatics; Lv, Lv' are chosen independently of one another from the group comprising fluorinated or non-fluorinated, bi-dentate C2-C30 heteroalkyl or heteroaromatics; LT, LT' are chosen independently of one another from the group comprising fluorinated or non-fluorinated, mono-, bi-, or tri-dentate C2-C30 0-, S-, N-, heteroalkyl or heteroaromatics; n, m are 1 or 2 independently of one another. |