Organic electroluminescent device
View Patent ↗The invention provides an organic electroluminescent device having at least an organic compound layer provided between a pair of electrodes. The organic electroluminescent device has at least a polymer comprising a metal complex containing a tri- or higher-dentate ligand in the polymer molecule. The metal complex preferably contains a tetra- or higher-dentate ligand in the polymer molecule. At least one of the ligands is preferably a chain. The metal complex preferably contains a transition metal ion or a rare earth metal ion. The metal complex preferably contains a nitrogen atom in its complex structure. Further, the polymer preferably contains the metal complex in its main chain or its side chain.
1. An organic electroluminescent device comprising an organic compound layer provided between a pair of electrodes, which comprises a polymer represented by the formula
wherein Uem represents a unit comprising a metal complex represented by the following Formula (3-C):
wherein R C1 and R C2 each independently represent an alkyl group or an aryl group; R C3 , R C4 , R C5 , and R C6 each independently represent a hydrogen atom, an alkyl group, an aryl group, a heteroaryl group, a halogen atom, or a cyano group; each of n C3 and n C6 represents an integer of 0 to 3; each of n C4 and n C5 represents an integer of 0 to 4; when there are plural R C3 s, R C4 s, R C5 s, or R C6 s, the plural R C3 s, R C4 s, R C5 s, or R C6 s may be the same as each other or different from each other,
the metal complex being linked to the polymer via R C1 ;
wherein Up represents a unit comprising a hole transporting moiety having the following structure:
wherein the asterisk * represents a site at which the hole transporting moiety bonds to the polymer; and
each of m and n represents a mole percentage that satisfies the equation of m+n=100 mol %, with the mole percent ratio of m:n being in the range of from 5:95 to 20:80.