Light-emitting material comprising orthometalated iridium complex, light-emitting device, high efficiency red light-emitting device, and novel iridium complex
AssigneeFuji Photo Film Co., Ltd.
InventorsTatsuya Igarashi, Keizo Kimura, Kazumi Nii
Life of this patent
Estimating the term…
Abstract
A light-emitting material comprises a compound having a partial structure represented by the following formula (1) or tautomer thereof: 1
Claims9
A light-emitting material comprising a compound having a partial structure represented by the following formulae (1) to (10), (21), (22), or tautomer thereof:
- 51 52 53
- wherein R1 and R2 each represent a substituent;
- and q1 and q2 each represent an integer of from 0 to 4, with the proviso that the sum of q1 and q2 is 1 or more, 54
- wherein Z11 and Z12 each represent a nonmetallic atom group required to form a 5- or 6-membered ring with at least one of carbon atom and nitrogen atom, said ring optionally having a substituent or forming a condensed ring with the other ring;
- Ln1 represents a divalent group;
- Y1 represents a nitrogen atom or carbon atom;
- and b1 represents a single bond or double bond,
- (CO)Ir (5)(NC)Ir (6) 55
- wherein Z21 and Z22 each represent a nonmetallic atom group required to form a 5- or 6-membered ring with at least one of carbon atom and nitrogen atom, said ring optionally having a substituent or forming a condensed ring with the other ring;
- Y2 represents a nitrogen atom or carbon atom;
- and b2 represents a single bond or double bond, 56
- wherein X201, X202, X203 and X204 each represent a nitrogen atom or C—R and forms a nitrogen-containing heteroaryl 6-membered ring with —C═N—, with the proviso that at least one of X201, X202, X203 and X204 represents a nitrogen atom;
- R represents a hydrogen atom or substituent;
- and Z201 represents an atomic group for forming an aryl or heteroaryl ring, 57
- wherein Z201 and Z301 each represent an atomic group for forming an aryl or heteroaryl ring, 58
- wherein Z201 and Z401 each represent an atomic group for forming an aryl or heteroaryl ring, 59 60
- wherein Z1 represents an atomic group which forms a heteroaryl ring.
A compound having a partial structure represented by the following formula (4) or a tautomer thereof:
- 61
- wherein Z11 and Z12 each represent a nonmetallic atom group required to form a 5- or 6-membered ring with carbon atom and/or nitrogen atom, said ring optionally having a substituent or forming a condensed ring with the other ring;
- Ln1 represents a divalent group;
- Y1 represents a nitrogen atom or carbon atom;
- and b1 represents a single bond or double bond.
A compound represented by the following formula (23) or (24):
- 62
- wherein R11 and R12 each represent a substituent;
- R13, R14 and R15 each represent a hydrogen atom or substituent;
- m1 represents an integer of from 0 to 4;
- and m2 represents an integer of from 0 to 6, 63
- wherein R11 and R12 each represent a substituent;
- m1 represents an integer of from 0 to 4;
- m2 represents an integer of from 0 to 6;
- Z2 represents an atomic group which forms an aryl or heteroaryl ring;
- Z3 represents an atomic group which forms a nitrogen-containing heteroaryl ring;
- and n1 represents an integer of from 1 to 3.
An organic light-emitting device comprising a light-emitting layer or a plurality of thin organic compound layers containing a light-emitting layer formed interposed between a pair of electrodes, wherein at least one layer comprises a light-emitting material having a partial structure represented by the following formula (1) to (10), (21), (22) or a tautomer thereof:
- 64 65 66
- wherein R1 and R2 each represent a substituent;
- and q1 and q2 each represent an integer of from 0 to 4, with the proviso that the sum of q1 and q2 is 1 or more, 67
- wherein Z11 and Z12 each represent a nonmetallic atom group required to form a 5- or 6-membered ring with at least one of carbon atom and nitrogen atom, said ring optionally having a substituent or forming a condensed ring with the other ring;
- Ln1 represents a divalent group;
- Y1 represents a nitrogen atom or carbon atom;
- and b1 represents a single bond or double bond,
- (CO)Ir (5)(NC)Ir (6) 68
- wherein Z21 and Z22 each represent a nonmetallic atom group required to form a 5- or 6-membered ring with at least one of carbon atom and nitrogen atom, said ring optionally having a substituent or forming a condensed ring with the other ring;
- Y2 represents a nitrogen atom or carbon atom;
- and b2 represents a single bond or double bond, 69
- wherein X201, X202, X203 and X204 each represent a nitrogen atom or C—R and forms a nitrogen-containing heteroaryl 6-membered ring with —C═N—, with the proviso that at least one of X201, X202, X203 and X204 represents a nitrogen atom;
- R represents a hydrogen atom or substituent;
- and Z201 represents an atomic group for forming an aryl or heteroaryl ring, 70
- wherein Z201 and Z301 each represent an atomic group for forming an aryl or heteroaryl ring, 71
- wherein Z201 and Z401 each represent an atomic group for forming an aryl or heteroaryl ring, 72 73
- wherein Z1 represents an atomic group which forms a heteroaryl ring.
An organic light-emitting device comprising a light-emitting layer or a plurality of thin organic compound layers containing a light-emitting layer formed interposed between a pair of electrodes, wherein at least one layer contains an orthometalated iridium complex, and said layer containing an orthometalated iridium complex is formed by a coating process.
An organic light-emitting device having an external quantum efficiency of 5% or more, and a λmax of light emitting of 590 nm or more.
Dependencies are inferred from the claim text.