CN106432349A - Iridium complex, preparation method thereof and electroluminescent device employing iridium complex - Google Patents
Iridium complex, preparation method thereof and electroluminescent device employing iridium complex Download PDFInfo
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- CN106432349A CN106432349A CN201610804191.6A CN201610804191A CN106432349A CN 106432349 A CN106432349 A CN 106432349A CN 201610804191 A CN201610804191 A CN 201610804191A CN 106432349 A CN106432349 A CN 106432349A
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- bis
- iridium
- trifluoromethyl pyridine
- complex
- quinoline
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- 229910052741 iridium Inorganic materials 0.000 title claims abstract description 56
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 238000002360 preparation method Methods 0.000 title claims description 11
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 claims abstract description 46
- AWJUIBRHMBBTKR-UHFFFAOYSA-N isoquinoline Chemical compound C1=NC=CC2=CC=CC=C21 AWJUIBRHMBBTKR-UHFFFAOYSA-N 0.000 claims abstract description 22
- LFSXCDWNBUNEEM-UHFFFAOYSA-N phthalazine Chemical compound C1=NN=CC2=CC=CC=C21 LFSXCDWNBUNEEM-UHFFFAOYSA-N 0.000 claims abstract description 20
- JWVCLYRUEFBMGU-UHFFFAOYSA-N quinazoline Chemical compound N1=CN=CC2=CC=CC=C21 JWVCLYRUEFBMGU-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000003446 ligand Substances 0.000 claims abstract description 16
- -1 tetraphenylphosphonium imide Chemical class 0.000 claims abstract description 5
- NZFDZFJVWFDFQV-UHFFFAOYSA-N 2,4-bis(trifluoromethyl)pyridine Chemical compound FC(F)(F)C1=CC=NC(C(F)(F)F)=C1 NZFDZFJVWFDFQV-UHFFFAOYSA-N 0.000 claims description 53
- 150000001875 compounds Chemical class 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 19
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 16
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 14
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 11
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 8
- 241001597008 Nomeidae Species 0.000 claims description 7
- 238000006471 dimerization reaction Methods 0.000 claims description 7
- 150000002466 imines Chemical class 0.000 claims description 7
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims description 7
- UJOBWOGCFQCDNV-UHFFFAOYSA-N 9H-carbazole Chemical compound C1=CC=C2C3=CC=CC=C3NC2=C1 UJOBWOGCFQCDNV-UHFFFAOYSA-N 0.000 claims description 6
- 239000000758 substrate Substances 0.000 claims description 6
- 238000004440 column chromatography Methods 0.000 claims description 5
- 239000012141 concentrate Substances 0.000 claims description 5
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 5
- 150000003222 pyridines Chemical class 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 4
- 125000001424 substituent group Chemical group 0.000 claims description 4
- ATRQECRSCHYSNP-UHFFFAOYSA-N 2-(trifluoromethyl)pyridine Chemical compound FC(F)(F)C1=CC=CC=N1 ATRQECRSCHYSNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000010405 anode material Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- MRNHPUHPBOKKQT-UHFFFAOYSA-N indium;tin;hydrate Chemical compound O.[In].[Sn] MRNHPUHPBOKKQT-UHFFFAOYSA-N 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 3
- 230000004044 response Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 238000005292 vacuum distillation Methods 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- 239000012043 crude product Substances 0.000 claims description 2
- 238000004821 distillation Methods 0.000 claims description 2
- 238000000605 extraction Methods 0.000 claims description 2
- 230000027756 respiratory electron transport chain Effects 0.000 claims description 2
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 claims description 2
- HIISVQYDQWJITQ-UHFFFAOYSA-N 1h-pyrrole;quinoline Chemical class C=1C=CNC=1.N1=CC=CC2=CC=CC=C21 HIISVQYDQWJITQ-UHFFFAOYSA-N 0.000 claims 1
- UJJMLGJZQGGQAZ-UHFFFAOYSA-N 2-(fluoromethyl)pyridine Chemical compound FCC1=CC=CC=N1 UJJMLGJZQGGQAZ-UHFFFAOYSA-N 0.000 claims 1
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 claims 1
- 229940093475 2-ethoxyethanol Drugs 0.000 claims 1
- BSKHPKMHTQYZBB-UHFFFAOYSA-N 2-methylpyridine Chemical compound CC1=CC=CC=N1 BSKHPKMHTQYZBB-UHFFFAOYSA-N 0.000 claims 1
- YJLPIKFDEXHCNQ-UHFFFAOYSA-N iridium;quinoline Chemical compound [Ir].N1=CC=CC2=CC=CC=C21 YJLPIKFDEXHCNQ-UHFFFAOYSA-N 0.000 claims 1
- ODHXBMXNKOYIBV-UHFFFAOYSA-N triphenylamine Chemical compound C1=CC=CC=C1N(C=1C=CC=CC=1)C1=CC=CC=C1 ODHXBMXNKOYIBV-UHFFFAOYSA-N 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 3
- 238000004020 luminiscence type Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000000746 purification Methods 0.000 abstract description 3
- 238000000859 sublimation Methods 0.000 abstract description 3
- 230000008022 sublimation Effects 0.000 abstract description 3
- 150000002503 iridium Chemical class 0.000 abstract 2
- XSCHRSMBECNVNS-UHFFFAOYSA-N benzopyrazine Natural products N1=CC=NC2=CC=CC=C21 XSCHRSMBECNVNS-UHFFFAOYSA-N 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 18
- 238000005401 electroluminescence Methods 0.000 description 13
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- GLUUGHFHXGJENI-UHFFFAOYSA-N Piperazine Chemical compound C1CNCCN1 GLUUGHFHXGJENI-UHFFFAOYSA-N 0.000 description 2
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 description 2
- 239000004327 boric acid Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000010189 synthetic method Methods 0.000 description 2
- 125000006617 triphenylamine group Chemical class 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- IMRWILPUOVGIMU-UHFFFAOYSA-N 2-bromopyridine Chemical compound BrC1=CC=CC=N1 IMRWILPUOVGIMU-UHFFFAOYSA-N 0.000 description 1
- CINYXYWQPZSTOT-UHFFFAOYSA-N 3-[3-[3,5-bis(3-pyridin-3-ylphenyl)phenyl]phenyl]pyridine Chemical compound C1=CN=CC(C=2C=C(C=CC=2)C=2C=C(C=C(C=2)C=2C=C(C=CC=2)C=2C=NC=CC=2)C=2C=C(C=CC=2)C=2C=NC=CC=2)=C1 CINYXYWQPZSTOT-UHFFFAOYSA-N 0.000 description 1
- ZOKIJILZFXPFTO-UHFFFAOYSA-N 4-methyl-n-[4-[1-[4-(4-methyl-n-(4-methylphenyl)anilino)phenyl]cyclohexyl]phenyl]-n-(4-methylphenyl)aniline Chemical compound C1=CC(C)=CC=C1N(C=1C=CC(=CC=1)C1(CCCCC1)C=1C=CC(=CC=1)N(C=1C=CC(C)=CC=1)C=1C=CC(C)=CC=1)C1=CC=C(C)C=C1 ZOKIJILZFXPFTO-UHFFFAOYSA-N 0.000 description 1
- 208000019901 Anxiety disease Diseases 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000005525 hole transport Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000012044 organic layer Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000006862 quantum yield reaction Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- DANYXEHCMQHDNX-UHFFFAOYSA-K trichloroiridium Chemical compound Cl[Ir](Cl)Cl DANYXEHCMQHDNX-UHFFFAOYSA-K 0.000 description 1
- XPDWGBQVDMORPB-UHFFFAOYSA-N trifluoromethane acid Natural products FC(F)F XPDWGBQVDMORPB-UHFFFAOYSA-N 0.000 description 1
- RIOQSEWOXXDEQQ-UHFFFAOYSA-N triphenylphosphine Chemical compound C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 RIOQSEWOXXDEQQ-UHFFFAOYSA-N 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F15/00—Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
- C07F15/0006—Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table compounds of the platinum group
- C07F15/0033—Iridium compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
- H10K50/12—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers comprising dopants
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/30—Coordination compounds
- H10K85/341—Transition metal complexes, e.g. Ru(II)polypyridine complexes
- H10K85/342—Transition metal complexes, e.g. Ru(II)polypyridine complexes comprising iridium
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/18—Metal complexes
- C09K2211/185—Metal complexes of the platinum group, i.e. Os, Ir, Pt, Ru, Rh or Pd
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Electroluminescent Light Sources (AREA)
- Pyridine Compounds (AREA)
Abstract
The invention relates to an iridium complex which has a novel main ligand and a tetraphenylphosphonium imide derivative as an auxiliary ligand. The main ligand of a molecule of the series of iridium complexes is 2-(4,6-ditrifluoromethylpyridine-3-)quinoline, 2-(4,6-ditrifluoromethylpyridine-4-)quinoline, 2-(4,6-ditrifluoromethylpyridine-3-)isoquinoline, 2-(4,6-ditrifluoromethylpyridine-4-)isoquinoline, 2-(4,6-ditrifluoromethylpyridine-3-)quinazoline, 2-(4,6-ditrifluoromethylpyridine-4-)quinazoline, 2-(4,6-ditrifluoromethylpyridine-3-)phthalazine or a 2-(4,6-ditrifluoromethylpyridine-4-)phthalazine derivative. The novel iridium complexes provided by the invention have the advantages of high luminescence efficiency, stable chemical properties, easiness in sublimation and purification, and the like; the performance of devices is excellent. Through modifying molecular structures of the ligands, the luminescent intensity and efficiency of the complexes can be adjusted in a red-light wavelength range, so that convenience is provided for the design and production of organic electroluminescent displays and lighting sources.
Description
【Technical field】
The present invention relates to organic electroluminescence device technical field, more particularly, to a kind of complex of iridium and preparation method thereof and
Apply the luminescent device of described complex of iridium.
【Background technology】
Under the overall background that global energy requirements are growing and ecological environment causes anxiety, national governments greatly develop base in succession
In high-tech energy sustainability technology and industry.Organic electroluminescence device (OLEDs) is because its visual angle is wide, brightness is high, energy consumption
Low and many advantages, such as flexible device can be prepared, and receive much attention, it is referred to as to dominate the key technology in the following display world.Closely
Nian Lai, numerous studies show, in numerous heavy metal element coordination compounds, complex of iridium be considered as OLEDs phosphor material
Ideal chose.There is 5d76s2The iridium atom of outer electronic structure, after formation+trivalent cation, has 5d6Electron configuration, has
Stable hexa-coordinate octahedral structure, makes material have higher chemical stability and heat stability.Meanwhile, Ir (III) has
Larger spin orbit coupling constant (ξ=3909cm-1), be conducive to improving the interior quantum yield of coordination compound and reducing the luminous longevity
Life, thus improve the overall performance of luminescent device.
As phosphor material, complex of iridium typically has Microsecond grade, easily causes the triplet-triplet of complex of iridium
And the phosphorescence of triplet-intensify between son is quenched.In addition, in current conventional material, the hole of hole mobile material
Mobility is far above the electron mobility of electron transport material, and conventional material of main part is also based on hole transport, and this can lead
Cause the gathering in luminescent layer and electric transmission bed boundary for the hole of great quantities of spare.These factors all can lead to the reduction of efficiency and tight
The efficiency roll-off of weight.Research shows, if complex of iridium has higher electron transport ability, can effectively increase electronics and exist
The transmission of luminescent layer and distribution, the region widening electron-hole, the quantity in balance electronic-hole pair, greatly improve device
Efficiency, reduces roll-offing of efficiency.
Therefore, it is necessary to provide a kind of complex of iridium with high-luminous-efficiency and electron mobility.
【Content of the invention】
It is an object of the invention to provide a class contains new main part, with tetraphenyl imines derivant for auxiliary
Complexes of red light iridium of part and preparation method thereof, such coordination compound can be applied to organic electroluminescence as the centre of luminescence
In part.
The present invention provides a kind of complex of iridium, and it contains two main parts and an assistant ligand, and described main part is 2-
(4,6- bis- trifluoromethyl pyridine -3-) quinoline, 2- (4,6- bis- trifluoromethyl pyridine -4-) quinoline, 2- (4,6- bis- trifluoromethyl pyrrole
Pyridine -3-) isoquinolin, 2- (4,6- bis- trifluoromethyl pyridine -4-) isoquinolin, 2- (4,6- bis- trifluoromethyl pyridine -3-) quinazoline,
2- (4,6- bis- trifluoromethyl pyridine -4-) quinazoline and 2- (4,6- bis- trifluoromethyl pyridine -3-) phthalazines, 2- (4,6- bis- trifluoro
Picoline -4-) any one in phthalazine derivatives, in described main part and iridium with the pyridine derivate of C Atomic coordinate is：Described assistant ligand is tetraphenyl imines derivant, and its substituting group position is the 2-4 of phenyl ring
Position, substituent group is H, F or-CF3.
Preferably, quinoline, isoquinolin, quinazoline and the phthalazine derivatives choosing being coordinated with nitrogen-atoms with iridium in described main part
From：In any one.
Preferably, described complex of iridium has one of following structure：
The complex of iridium preparation method providing in the present invention is as follows：Will containing four 2- (4,6- bis- trifluoromethyl pyridine-
3-) quinoline, 2- (4,6- bis- trifluoromethyl pyridine -4-) quinoline, 2- (4,6- bis- trifluoromethyl pyridine -3-) isoquinolin, 2- (4,6-
Two trifluoromethyl pyridine -4-) isoquinolin, 2- (4,6- bis- trifluoromethyl pyridine -3-) quinazoline, 2- (4,6- bis- trifluoromethyl pyrrole
Pyridine -4-) quinazoline and 2- (4,6- bis- trifluoromethyl pyridine -3-) phthalazines, 2- (4,6- bis- trifluoromethyl pyridine -4-) phthalazines derive
Thing is as the iridium dimerization bridging coordination compound of main part and assistant ligand and sodium carbonate mixing；Add cellosolvo solution,
Carry out reacting by heating, response time 12-48h at 120-140 DEG C, be cooled to room temperature, vacuum distillation removes solvent, then uses dichloromethane
Alkane extracts, and concentrates, through column chromatography for separation, obtains the crude product of coordination compound, obtains pure complex of iridium through distillation.
Preferably, the mol ratio of described iridium dimerization bridging coordination compound, assistant ligand and sodium carbonate is 1:2:5.
The present invention also provides a kind of luminescent device of this complex of iridium of application, it include substrate, anode, hole transmission layer,
Organic luminous layer, electron transfer layer and negative electrode, described substrate is glass, and anode material is tin indium oxide；Hole transmission layer uses
[N, N- bis- (4- aminomethyl phenyl) aniline, electron transport layer materials use 3,3'- (5'- (3- (pyridine -3- to 4,4'- cyclohexyl two
Base) phenyl)-[1,1':3', 1 "-triphenyl] -3,3 "-diyl) two pyridines, negative electrode adopts LiF/Al.Organic luminous layer is using mixing
The double emitting layers of miscellaneous structure, material of main part is to use 4,4', 4 respectively "-three (carbazole -9- base) triphenylamines and double (3- (the 9- click of 2,6-
Oxazolyl) phenyl) pyridine, selected luminescent material is described complex of iridium, mass fraction 5wt%.
Beneficial effects of the present invention：The complex of iridium that the present invention provides has luminous efficiency height, electron mobility is high and changes
Learn stable in properties, the feature of easy sublimation purification.The preparation method of described complex of iridium is simple, and yield is higher.Due to azacyclo-
Introduce, the electronic transmission performance of coordination compound can Effective Regulation, be the design of display of organic electroluminescence and lighting source
Production is provided convenience.
【Brief description】
Fig. 1 is used for the electroluminescent spectrum of organic electroluminescence device for the complex of iridium RIr3-01 that the present invention provides；
Fig. 2 is used for the brightness-voltage curve of organic electroluminescence device for the complex of iridium RIr3-01 that the present invention provides；
Current efficiency-brightness that Fig. 3 is used for organic electroluminescence device for the complex of iridium RIr3-01 that the present invention provides is bent
Line；
【Specific embodiment】
The present invention is described in further detail with reference to the accompanying drawings and examples.The term being used in the present invention, unless
It is otherwise noted, typically there is the implication of those of ordinary skill in the art's generally reason.
A kind of complexes of red light iridium, it is included containing new main part, with tetraphenyl imines derivant for auxiliary
Part, described main part be 2- (4,6- bis- trifluoromethyl pyridine -3-) quinoline, 2- (4,6- bis- trifluoromethyl pyridine -4-) quinoline,
2- (4,6- bis- trifluoromethyl pyridine -3-) isoquinolin, 2- (4,6- bis- trifluoromethyl pyridine -4-) isoquinolin, 2- (4,6- bis- trifluoro
Picoline -3-) quinazoline, 2- (4,6- bis- trifluoromethyl pyridine -4-) quinazoline and 2- (4,6- bis- trifluoromethyl pyridine -3-)
Any one in phthalazines, 2- (4,6- bis- trifluoromethyl pyridine -4-) phthalazine derivatives.With iridium with C atom in described main part
Coordination pyridine derivate be：Or.In described main part and iridium be coordinated with nitrogen-atoms quinoline, isoquinolin, quinazoline
It is selected from phthalazine derivatives： In any one.Described assistant ligand
Any one for tetraphenyl imines derivant.
The complex of iridium of the present invention has all used iridous chloride, 4,6- bis- trifluoromethyl pyridine -3- boron in building-up process
Acid, 4,6- bis- trifluoromethyl pyridine -4- boric acid, tetraphenyl imines derivant etc., synthetic method is similar to.
Will be containing 2- (4,6- bis- trifluoromethyl pyridine -3-) quinoline, 2- (4,6- bis- trifluoromethyl pyridine -4-) quinoline, 2-
(4,6- bis- trifluoromethyl pyridine -3-) isoquinolin, 2- (4,6- bis- trifluoromethyl pyridine -4-) isoquinolin, 2- (4,6- bis- fluoroform
Yl pyridines -3-) quinazoline, 2- (4,6- bis- trifluoromethyl pyridine -4-) quinazoline and 2- (4,6- bis- trifluoromethyl pyridine -3-) phthalein
Piperazine, 2- (4,6- bis- trifluoromethyl pyridine -4-) phthalazine derivatives are as the iridium dimerization bridging coordination compound of main part and assistant ligand
And sodium carbonate mixing；Add cellosolvo solution, carry out reacting by heating at 120-140 DEG C, response time 12-48h is cold
But to room temperature, vacuum distillation removes solvent, then with dichloromethane extraction, concentrates, through column chromatography for separation, obtain the thick of coordination compound
Product, obtain complex of iridium through sublimation purification.Wherein, described iridium dimerization bridging coordination compound contain 2- (4,6- bis- trifluoromethyl pyridines-
3-) quinoline, 2- (4,6- bis- trifluoromethyl pyridine -4-) quinoline, 2- (4,6- bis- trifluoromethyl pyridine -3-) isoquinolin, 2- (4,6-
Two trifluoromethyl pyridine -4-) isoquinolin, 2- (4,6- bis- trifluoromethyl pyridine -3-) quinazoline, 2- (4,6- bis- trifluoromethyl pyrrole
Pyridine -4-) quinazoline and 2- (4,6- bis- trifluoromethyl pyridine -3-) phthalazines, 2- (4,6- bis- trifluoromethyl pyridine -4-) phthalazines derive
Thing, the mol ratio of described iridium dimerization bridging coordination compound, assistant ligand and sodium carbonate is 1:2:5.
Described complex of iridium has one of following structure：
Below with wherein one embodiment, as a example coordination compound RIr3-01, illustrate present invention, by following embodiments
Will be helpful to further understand the present invention, but do not limit present disclosure.
The synthetic method of coordination compound RIr3-01
2- bromopyridine (26.39mmol), 4,6- bis- trifluoromethyl pyridine -3- boric acid (31.66mmol), four triphenyl phosphorus palladiums
(0.79mmol) it is dissolved in 100mL oxolane with sodium carbonate (60.00mmol), 65 DEG C are reacted 24 hours, cooling adds water
And dichloromethane, organic layer concentrates column chromatography and obtains main part (yield be 52.24%).By main part (13.08mmol) and three
Iridium chloride (6.23mmol) is dissolved in 15mL cellosolvo, 130 DEG C of reaction 12h of mixture, is subsequently adding assistant ligand
(12.46mmol) with sodium carbonate (31.15mmol), 130 DEG C of reaction 24h are continued.System cools down, and adds water and dichloromethane, has
Machine layer concentrates column chromatography and obtains yellow solid RIr3-01, and its yield is 40%.
The present invention with 2- (4,6- bis- trifluoromethyl pyridine -3-) quinoline, 2- (4,6- bis- trifluoromethyl pyridine -4-) quinoline,
2- (4,6- bis- trifluoromethyl pyridine -3-) isoquinolin, 2- (4,6- bis- trifluoromethyl pyridine -4-) isoquinolin, 2- (4,6- bis- trifluoro
Picoline -3-) quinazoline, 2- (4,6- bis- trifluoromethyl pyridine -4-) quinazoline, 2- (4,6- bis- trifluoromethyl pyridine -3-)
Phthalazines and 2- (4,6- bis- trifluoromethyl pyridine -4-) phthalazine derivatives, as main part, with tetraphenyl imines derivant are
Assistant ligand design has synthesized a series of complexes of red light iridium.By designing part or complex structure, and by part
The modification of simple chemical substituents, reaches the purpose that regulation and control coordination compound lights with electron mobility.
Described azacyclo- is all the group having stronger electron-transporting, effectively in injection and the transmission of equilbrium carrier.
Described complex of iridium has higher luminous efficiency and electron mobility, after optimized checking, its preparation method letter
Single, and yield is higher.
The preparation of organic electroluminescence device
As a example below organic electroluminescence device being prepared as luminescent material using RIr3-01, organic electroluminescence of the present invention is described
The preparation of luminescent device.The structure of OLEDs device includes：Substrate, anode, hole transmission layer, organic luminous layer and electric transmission
Layer/negative electrode.
In the element manufacturing of the present invention, substrate is glass, and anode material is tin indium oxide (ITO)；Hole transmission layer uses
[N, N- bis- (4- aminomethyl phenyl) aniline (TAPC), electron transport layer materials use 3,3'- (5'- (3- (pyrrole to 4,4'- cyclohexyl two
Pyridine -3- base) phenyl)-[1,1':3', 1 "-triphenyl] -3,3 "-diyl) two pyridines (TmPyPB), thickness is 60nm, evaporation speed
Rate is 0.05nm/s；Negative electrode adopts LiF/Al.Organic luminous layer adopts the double emitting layers of doped structure, and material of main part is to use respectively
4,4', 4 "-three (carbazole -9- base) triphenylamines (TcTa) and double (3- (9- carbazyl) phenyl) pyridine (26DCzPPy) of 2,6-, institute
From luminescent material be described complex of iridium RIr3-01, mass fraction 5wt%.
Different materials structure in the present invention is as follows：
The present invention selects a kind of HONGGUANG coordination compound to prepare organic electroluminescence device.See also Fig. 1, Fig. 2 and Fig. 3,
Fig. 1 is used for the electroluminescent spectrum of organic electroluminescence device for the complex of iridium that the present invention provides, Fig. 2 and Fig. 3 is the present invention
The complex of iridium providing is used for the photoelectric properties of organic electroluminescence device.As shown in Figures 2 and 3, described organic electroluminescent
The startup voltage of device is 3.5V, and its maximum power efficiency and current efficiency are respectively 60.05cd/A, high-high brightness 98532cd/
m2.By studying photophysical property, show that this kind of phosphorescent iridium complex containing azacyclo- has higher device efficiency, aobvious
The field such as show and illuminate and there is actual application value.
Such phosphor material that the present invention provides can be applied to the emission layer of phosphorescent OLED s as the centre of luminescence, by setting
Meter part or complex structure, and by modifying to the chemical substituents of described part, invention achieves regulation and control cooperation
Thing glow color and the purpose of efficiency.
Above-described is only embodiments of the present invention, it should be noted here that for those of ordinary skill in the art
For, without departing from the concept of the premise of the invention, improvement can also be made, but these belong to the protection model of the present invention
Enclose.
Claims (6)
1. it is characterised in that it includes containing two main parts and an assistant ligand, described main part is a kind of complex of iridium
2- (4,6- bis- trifluoromethyl pyridine -3-) quinoline, 2- (4,6- bis- trifluoromethyl pyridine -4-) quinoline, 2- (4,6- bis- trifluoromethyl
Pyridine -3-) isoquinolin, 2- (4,6- bis- trifluoromethyl pyridine -4-) isoquinolin, 2- (4,6- bis- trifluoromethyl pyridine -3-) quinoline azoles
Quinoline, 2- (4,6- bis- trifluoromethyl pyridine -4-) quinazoline and 2- (4,6- bis- trifluoromethyl pyridine -3-) phthalazines, 2- (4,6- bis- or three
Fluoromethylpyridin -4-) any one in phthalazine derivatives, in described part and the pyridine derivate that is coordinated with carbon atom of iridium
For：Described assistant ligand is tetraphenyl imines derivant, and its substituting group position is phenyl ring
2-4 position, substituent group be H, F or-CF3.
2. complex of iridium according to claim 1 is it is characterised in that in described main part and the quinoline that is coordinated with nitrogen-atoms of iridium
Quinoline, isoquinolin, quinazoline and phthalazine derivatives are selected from： In appoint
Meaning is a kind of.
3. complex of iridium according to claim 1 is it is characterised in that described complex of iridium has one of following structure：
4. a kind of preparation method of complex of iridium it is characterised in that by the iridium dimerization bridging coordination compound containing four main parts and
Assistant ligand and sodium carbonate mixing, described main part is 2- (4,6- bis- trifluoromethyl pyridine -3-) quinoline, 2- (4,6- bis- trifluoros
Picoline -4-) quinoline, 2- (4,6- bis- trifluoromethyl pyridine -3-) isoquinolin, 2- (4,6- bis- trifluoromethyl pyridine -4-) be different
Quinoline, 2- (4,6- bis- trifluoromethyl pyridine -3-) quinazoline, 2- (4,6- bis- trifluoromethyl pyridine -4-) quinazoline and 2- (4,6-
Two trifluoromethyl pyridine -3-) phthalazines, any one in 2- (4,6- bis- trifluoromethyl pyridine -4-) phthalazine derivatives；Add 2-
Ethoxy ethanol solution, carries out reacting by heating, response time 12-48h at 120 140 DEG C, is cooled to room temperature, vacuum distillation is removed
Remove solvent, then with dichloromethane extraction, concentrate, through column chromatography for separation, obtain the crude product of coordination compound, obtain pure iridium through distillation and join
Compound.
5. complex of iridium according to claim 4 preparation method it is characterised in that described iridium dimerization bridging coordination compound and
The mol ratio of sodium carbonate is 1:5.
6. a kind of electroluminescent device of application complex of iridium as described in claim 1-3 any one, it includes substrate, sun
Pole, hole transmission layer, organic luminous layer, electron transfer layer and negative electrode, described substrate is glass, and anode material is tin indium oxide；
Hole transmission layer uses 4,4'- cyclohexyl two, and [N, N- bis- (4- aminomethyl phenyl) aniline, electron transport layer materials use 3,3'-
(5'- (3- (pyridin-3-yl) phenyl)-[1,1':3', 1 "-triphenyl] -3,3 "-diyl) two pyridines, negative electrode adopts LiF/Al.
Organic luminous layer adopts the double emitting layers of doped structure, and material of main part is to use 4,4', 4 respectively "-three (carbazole -9- base) triphenylamine
Double (3- (9- carbazyl) phenyl) pyridines with 2,6-, selected luminescent material is complex of iridium, mass fraction 5wt%.
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