Organic electroluminescence device
An organic electroluminescence device material comprising a metal complex having a neopentyl group, for example, as shown below; and an organic electroluminescence device comprising a substrate having thereon a pair of electrodes and at least one organic layer between the electrodes, the organic layer containing a light emitting layer, wherein any one of the organic layer contains the organic electroluminescence device material.
1 . A compound represented by formula (3):
wherein M 31 represents iridium; each of A 31 and A 32 independently represents a nitrogen atom or a carbon atom, each of R 33 to R 36 independently represents a hydrogen atom or a substituent; wherein R 33 to R 36 do not combine with each other to form a ring; Z 32 represents an aromatic heterocyclic ring or an aromatic hydrocarbon ring; each of L 32 and L 33 independently represents a carbon atom, a nitrogen atom, an oxygen atom or a phosphorus atom; E 31 represents an atomic group for forming a bidentate ligand together with L 32 and L 33 ; k represents an integer of 1 to 3, l represents an integer of 0 to 2, k+l is 3; each of S 31 and S 32 independently represents a substituent selected from (a), (c), (e), (h), (i), (j), (l), (n), (o), (q), and (w); each of n and m represents an integer of 0 to 4, n+m is an integer of 1 to 4; and each S 31 or S 32 may be the same as or different from every other S 31 or S 32 ;
wherein * indicates the bond to formula (3).
2 . The compound of claim 1 , wherein the compound represented by formula (3) is represented by the following general formula (4):
wherein M 41 represents iridium, each of R 43 to R 46 independently represents a hydrogen atom or a substituent, wherein R 43 to R 46 do not combine with each other to form a ring, each of B 41 to B 44 independently represents a nitrogen atom or C—R 47 , R 47 represents a hydrogen atom or a substituent, each R 47 may be the same as or different from every other R 47 , each of L 42 and L 43 independently represents a carbon atom, a nitrogen atom, an oxygen atom or a phosphorus atom, E 41 represents an atomic group for forming a bidentate ligand together with L 42 and L 43 , k represents an integer of 1 to 3, l represents an integer of 0 to 2, k+l is 3, each of S 41 and S 42 independently represents a substituent selected from (a), (c), (e), (h), (i), (j), (l), (n), (o), (q), and (w), each of n and m represents an integer of 0 to 4, n+m is an integer of 1 to 4, and each S 41 or S 42 may be the same as or different from every other S 41 or S 42 .
3 . The compound of claim 1 , wherein the compound represented by formula (3) is represented by the following general formula (7):
M 71 represents iridium, each of R 73 to R 76 independently represents a hydrogen atom or a substituent, wherein R 73 to R 76 do not combine with each other to form a ring, each of A 71 and A 72 independently represents a nitrogen atom or a carbon atom, each of D 71 to D 73 independently represents an atom selected from carbon, nitrogen, oxygen, sulfur and silicon, the bond between atoms in the 5-membered ring formed by D 71 to D 73 , A 71 and A 72 represents a single bond or a double bond, each of D 71 to D 73 when these can be further substituted may have a substituent, each of L 72 and L 73 represents a carbon atom, a nitrogen atom, an oxygen atom or a phosphorus atom, E 71 represents an atomic group for forming a bidentate ligand together with L 72 and L 73 , k represents an integer of 1 to 3, l represents an integer of 0 to 2, k+l is 3, each of S 71 and S 72 independently represents a substituent selected from (a), (c), (e), (h), (i), (j), (l), (n), (o), (q), and (w), each of n and m represents an integer of 0 to 4, n+m is an integer of 1 to 4, and each S 71 or S 72 may be the same as or different from every other S 71 or S 72 .
4 . A light emitting layer comprising the compound of claim 1 .
5 . The compound of claim 1 , wherein each of S 31 and S 32 independently represents a substituent selected from the group consisting of (n), (o), and (w)
6 . A compound represented by the following general formula (12):
wherein M 121 represents a metal of Groups 8 to 11 in the periodic table of elements, each of R 123 to R 125 independently represents a hydrogen atom or a substituent, wherein R 123 to R 125 do not combine with each other to form a ring, each of B 121 to B 124 independently represents a nitrogen atom or C—R 126 , R 126 represents a hydrogen atom or a substituent, each R 126 may be the same as or different from every other R 126 , each of L 122 and L 123 represents a carbon atom, a nitrogen atom, an oxygen atom or a phosphorus atom, E 121 represents an atomic group for forming a bidentate ligand together with L 122 and L 123 , k represents an integer of 1 to 3, l represents an integer of 0 to 2, k+l is 2 or 3, each of S 121 and S 122 independently represents a substituent selected from (a) to (w), each of n and m represents an integer of 0 to 4, n+m is an integer of 1 to 4, and each S 121 or S 122 may be the same as or different from every other S 121 or S 122 ;
wherein * indicates the bond to formula (12).
7 . An organic electroluminescence device comprising a substrate; a pair of electrodes on the substrate; and at least one organic layer between the electrodes, wherein the organic layer comprises the compound of claim 6 .
8 . A light emitting layer comprising the compound of claim 6 .