Organic electroluminescent device

1. An organic electroluminescent device comprising:

a pair of electrodes; and

at least one organic compound layer including a light emitting layer between the pair of electrodes,

wherein the at least one organic compound layer contains a metal complex;

wherein the metal complex is a compound represented by Formula (2) or (3):

in Formula (2), M 21 and M 22 each independently represents a metal ion;

Q 21 , Q 22 , Q 23 and Q 24 each independently represents an atom group coordinating with M 21 ;

Q 25 , Q 26 , Q 27 and Q 28 each independently represents an atom group coordinating with M 22 ;

L 21 , L 22 , L 23 , L 24 , L 25 and L 26 each independently represents a single bond or a connection group;

L 27 is a carbon atom, a silicon atom, an aryl group, or a heteroaryl group;

n 21 and n 22 each independently represents 0 or 1, provided that when n 21 is 0, a bond in which L 23 is interposed between Q 23 and Q 24 does not exist, and when n 22 is 0, a bond in which L 26 is interposed between Q 27 and Q 28 does not exist;

M 21 -Q 21 bond, M 21 -Q 22 bond, M 22 -Q 25 bond and M 22 -Q 26 bond (dotted line) represent coordinate bonds; and

M 21 -Q 23 bond, M 21 -Q 24 bond, M 22 -Q 27 bond and M 22 -Q 28 bond may each be a covalent bond, a coordinate bond or an ion bond, and

in Formula (3), M 31 and M 32 each independently represent a metal ion;

Q 31 , Q 32 , Q 33 and Q 34 each independently represents an atom group coordinating with M 31 ;

Q 35 , Q 36 , Q 37 and Q 38 each independently represents an atom group coordinating with M 32 ;

L 31 , L 32 , L 33 , L 34 , L 35 and L 36 each independently represents a single bond or a connection group;

L 37 is a carbon atom, a silicon atom, an aryl group, or a heteroaryl group;

n 31 and n 32 each independently represents 0 or 1, provided that when n 31 is 0, a bond in which L 33 is interposed between Q 33 and Q 34 does not exist, and when n 32 is 0, a bond in which L 36 is interposed between Q 37 and Q 38 does not exist;

M 31 -Q 33 bond, M 31 -Q 34 bond, M 32 -Q 37 bond and M 32 -Q 38 bond (dotted line) represent coordinate bonds; and

M 31 -Q 31 bond, M 31 -Q 32 bond, M 32 -Q 35 bond and M 32 -Q 36 bond each may be a covalent bond, a coordinate bond or an ion bond.

2. The organic electroluminescent device according to claim 1 ,

wherein the metal complex is a phosphorescent material.

3. The organic electroluminescent device according to claim 1 ,

wherein the metal complex is a compound in which two quadridentate ligands are connected to each other.

4. The organic electroluminescent device according to claim 1 ,

wherein in Formula 2, M 21 and M 22 , and in Formula (3), M 31 and M 32 , are each independently selected from the group consisting of a rhodium ion, a palladium ion, a rhenium ion, a iridium ion and a platinum ion.

5. The organic electroluminescent device according to claim 1 ,

wherein in Formula (2),

M 21 and M 22 each independently represents a platinum ion;

Q 21 , Q 22 , Q 25 and Q 26 each independently represents a nitrogen-containing heterocyclic group coordinating with a nitrogen atom;

Q 23 , Q 24 , Q 27 and Q 28 each independently represents an aryl group coordinating with a carbon atom, a heteroaryl group coordinating with a carbon atom, a heteroaryl group coordinating with a nitrogen atom, or a carboxyl group coordinating with an oxygen atom;

L 21 , L 22 , L 24 and L 25 each independently represents a single bond; and

L 23 and L 26 each independently represents an alkylene connecting group; and

wherein in Formula (3),

M 31 and M 32 each independently represents a platinum ion;

Q 33 , Q 34 , Q 37 and Q 38 each independently represents a nitrogen-containing heterocyclic group coordinating with a nitrogen atom;

Q 31 , Q 32 , Q 35 and Q 36 each independently represents an aryl group coordinating with a carbon atom, or a heteroaryl group coordinating with a carbon atom;

L 31 , L 32 , L 34 and L 35 each independently represents a single bond; and

L 33 and L 36 each independently represents an alkylene connecting group.

6. The organic electroluminescent device according to claim 1 , wherein in Formula (2), L 27 is a carbon atom or a silicon atom; and in Formula (3), L 37 is a carbon atom or a silicon atom.

7. The organic electroluminescent device according to claim 1 , wherein in Formula (2), n 21 and n 22 each independently represents 0; and in Formula (3), n 31 and n 32 each independently represents 0.

8. An organic electroluminescent device comprising:

a pair of electrodes; and

at least one organic compound layer including a light emitting layer between the pair of electrodes,

wherein the at least one organic compound layer contains a metal complex;

wherein the metal complex is a compound represented by Formula (4):

wherein M 41 and M 42 each independently represents a metal ion;

Q 43 and Q 44 each independently represents an atom group coordinating with M 41 ;

Q 47 and Q 48 each independently represents an atom group coordinating with M 42 ;

L 47 is a carbon atom, a silicon atom, an aryl group, or a heteroaryl group;

R 41 , R 42 , R 43 and R 44 each independently represents a substituent group;

m 41 , m 42 , m 43 and m 44 each independently represents an integer of 0 to 3;

M 41 -N bond and M 42 -N bond (dotted line) represent coordinate bonds; and

M 41 -Q 43 bond, M 41 -Q 44 bond, M 42 -Q 47 bond and M 42 -Q 48 bond may each be a covalent bond, a coordinate bond or an ion bond.

9. The organic electroluminescent device according to claim 8 , wherein in Formula (4);

M 41 and M 42 each independently represents a platinum ion;

L 47 is a carbon atom, a silicon atom, an aryl group, or a heteroaryl group;

Q 43 , Q 44 , Q 47 and Q 48 each independently represents an aryl group coordinating with a carbon atom, or a heteroaryl group coordinating with a carbon atom.