Specific embodiment
Pyridine derivate used in the present invention, phenyl-bromide all can have been bought in Chemicals market at home for basic chemical industry raw materials such as aldehyde ketone, aryl boric acid derivative, carbazyl boric acid derivatives, all available common organic procedures synthesis of various condensed-nuclei aromatics bromo-derivative, condensed-nuclei aromatics boric acid derivatives.
The synthesis of various intermediate
The synthesis of intermediate 1
2-amino-5-bromopyridine 0.892g(5mmol is added) in the flask of a 50ml, the bromo-2-phenyl acetophenone (6mmol) of 2-of 1.7g, sodium bicarbonate 0.491g(6mmol), Virahol 15ml, return stirring 12hrs, steam except Virahol, add 30ml Virahol and 60ml methylene dichloride, collect organic phase, use pillar layer separation product, sherwood oil and ethyl acetate drip washing, 3:1 proportioning.Obtain 1.17g, 67% productive rate.
The synthesis of intermediate 2
2-amino-4-bromopyridine 0.892g(5mmol is added) in the flask of a 50ml, the bromo-2-phenyl acetophenone (6mmol) of 2-of 1.7g, sodium bicarbonate 0.491g(6mmol), Virahol 15ml, return stirring 12hrs, steam except Virahol, add 30ml Virahol and 60ml methylene dichloride, collect organic phase, use pillar layer separation product, sherwood oil and ethyl acetate drip washing, 3:1 proportioning.Obtain 1.25g, 71.84% productive rate.
The synthesis of intermediate 3
PA 0.471g(5mmol is added) in the flask of a 50ml, the bromo-2-(4-bromophenyl of 2-of 2.13g) methyl phenyl ketone (6mmol), sodium bicarbonate 0.491g(6mmol), Virahol 15ml, return stirring 12hrs, steam except Virahol, add 30ml Virahol and 60ml methylene dichloride, collect organic phase, use pillar layer separation product, sherwood oil and ethyl acetate drip washing, 3:1 proportioning.Obtain 1.31g, 75.3% productive rate.
The synthesis of intermediate 4
Add as PA 0.471g (5mmol) in the flask of a 50ml, the bromo-2-phenyl of 2-(4-bromophenyl) ethyl ketone (6mmol) of 2.13, sodium bicarbonate 0.491g(6mmol), Virahol 15ml, return stirring 12hrs, steam except Virahol, add 30ml Virahol and 60ml methylene dichloride, collect organic phase, use pillar layer separation product, sherwood oil and ethyl acetate drip washing, 3:1 proportioning.Obtain 1.20g, 69% productive rate.
The synthesis of various intermediate boric acid (for intermediate 1, all the other roughly the same)
At one 500 milliliters of there-necked flasks; join magnetic agitation, Ar gas shielded, add 2 of 14.9g; 3-phenylbenzene-6-bromine imidazo [ 1; 2, a ] THF of pyridine (molecular weight 348,0.0428mol) and 120ml; be chilled to-78 DEG C; drip the nBuLi(0.05mol of 25ml2M), temperature maintains-78 DEG C always, drips the B (OiPr) of 30ml after stirring 10min-78 DEG C time
3(0.153mol), stir and add dilute acid hydrolysis to room temperature, upper strata is white solid.Filter, separate solid product, water layer is neutralized to neutrality, and extract by ethyl acetate, extracting solution evaporate to dryness, adds diluted alkaline, and withdraw not molten impurity in alkali by ethyl acetate, water layer is neutralized to neutrality, and adularescent solid is separated out, and filters, obtains product.Be total to obtain 11.7g solid product, molecular weight 314, productive rate 86.46%.
Embodiment 1
The synthesis of compound 1
The first step,
At one 500 milliliters of there-necked flasks, join electric stirring, Ar gas shielded; add the pentanoic (molecular weight 169,0.10mol) of 16.9g, the bromo-7-of 2-iodo-9; 9-dimethyl fluorene 44g(molecular weight 398,0.11mol), copper powder 15g(molecular weight 64; 0.234mol); salt of wormwood 41.4g(molecular weight 138,0.3mol), 18-hat-6 6.13g(molecular weight 264; 0.023mol), solvent orthodichlorobenzene 300ml is altogether added.Return stirring 4 hours, with TLC monitoring reaction.After reacting completely, be naturally stirred to room temperature, steaming desolventizes.Solid mixture silica gel column chromatography is separated, and obtains micro-yellow monobromo intermediate 40.3g, molecular weight 439, purity 97.5%, productive rate 89.4%.
Second step,
1000 milliliters of there-necked flasks, join magnetic agitation, add 2,3-diphenyl-imidazole also [ 1,2, a ] pyridine-6-boric acid 9.42g(molecular weight 314,0.03mol), the monobromo intermediate 12.3g(molecular weight 437,0.028mol obtained in the first step), Pd (PPh
3)
4usage quantity 1.8g(molecular weight 1154,0.00155mol), sodium carbonate 175ml(2M), toluene 175ml, ethanol 175ml.After argon replaces, backflow, with TLC monitoring reaction, react completely after 4 hours, cooling, separate organic layer, evaporate to dryness, the ethyl acetate/petroleum ether with 1/10 carries out post separation, obtains the compound 1 of 14.31g, molecular weight 627, purity 98.5%, productive rate 74.5%.
Product MS(m/e): 629, ultimate analysis (C
46h
35n
3): theoretical value C:87.73%, H:5.60%, N:6.67%; Measured value C:87.75%, H:5.62%, N:6.63%.
Embodiment 2
The synthesis of compound 2
Building-up process divides work two step.The first step reaction be same as embodiment 1 the first step, with 1-naphtyl phenyl amine replace pentanoic make raw material, other reagent and process constant, obtain corresponding monobromo intermediate; Second step reaction is same as embodiment 1 second step, replaces the monobromo intermediate in embodiment 1 with the monobromo intermediate of the synthesis of the first step here, other reagent and process constant, obtain compound 2.
Product MS(m/e): 679, ultimate analysis (C
50h
37n
3): theoretical value C:88.33%, H:5.49%, N:6.18%; Measured value C:88.30%, H:5.48%, N:6.22%.
Embodiment 3
The synthesis of compound 3
Building-up process divides work two step.The first step reaction is same as embodiment 1 the first step, obtains corresponding monobromo intermediate; Second step reaction is same as embodiment 1 the 2nd step, the monobromo intermediate in embodiment 1 is replaced with the monobromo intermediate of the first step synthesis, with 2,3-diphenyl-imidazole also [ 1,2, a ] pyridine-7-boric acid replacement 2,3-diphenyl-imidazole is [ 1,2, a ] pyridine-6-boric acid also, other reagent and process constant, obtain compound 3.
Product MS(m/e): 629, ultimate analysis (C
46h
35n
3): theoretical value C:87.73%, H:5.60%, N:6.67%; Measured value C:87.70%, H:5.61%, N:6.69%.
Embodiment 4
The synthesis of compound 4
Building-up process divides work two step.The first step reaction be same as embodiment 1 the first step, with 1-naphtyl phenyl amine replace pentanoic make raw material, other reagent and process constant, obtain corresponding monobromo intermediate; Second step reaction is same as embodiment 1 second step, the monobromo intermediate in embodiment 1 is replaced with the monobromo intermediate of the first step synthesis, with 2,3-diphenyl-imidazole also [ 1,2, a ] pyridine-7-boric acid replacement 2,3-diphenyl-imidazole is [ 1,2, a ] pyridine-6-boric acid also, other reagent and process constant, obtain compound 4.
Product MS(m/e): 679, ultimate analysis (C
50h
37n
3): theoretical value C:88.33%, H:5.49%, N:6.18%; Measured value C:88.31%, H:5.46%, N:6.23%.
Embodiment 5
The synthesis of compound 5
Building-up process divides work two step.The first step reaction is same as embodiment 1 the first step, obtains corresponding monobromo intermediate; Second step reaction is same as embodiment 1 second step, the monobromo intermediate in embodiment 1 is replaced with the monobromo intermediate of the first step synthesis, with 4-(3-phenylimidazole also [ 1,2, a ] pyridine-2-base) phenylo boric acid replaces 2,3-diphenyl-imidazole also [ 1,2, a ] pyridine-6-boric acid, other reagent and process constant, obtain compound 5.
Product MS(m/e): 629, ultimate analysis (C
46h
35n
3): theoretical value C:87.73%, H:5.60%, N:6.67%; Measured value C:87.75%, H:5.61%, N:6.64%.
Embodiment 6
The synthesis of compound 6
Building-up process divides work two step.The first step reaction be same as embodiment 1 the first step, with 1-naphtyl phenyl amine replace pentanoic make raw material, other reagent and process constant, obtain corresponding monobromo intermediate; Second step reaction is same as embodiment 1 second step, the monobromo intermediate in embodiment 1 is replaced with the monobromo intermediate of the first step synthesis, with 4-(3-phenylimidazole also [ 1,2, a ] pyridine-2-base) phenylo boric acid replaces 2,3-diphenyl-imidazole also [ 1,2, a ] pyridine-6-boric acid, other reagent and process constant, obtain compound 6.
Product MS(m/e): 679, ultimate analysis (C
50h
37n
3): theoretical value C:88.33%, H:5.49%, N:6.18%; Measured value C:88.34%, H:5.45%, N:6.21%.
Embodiment 7
The synthesis of compound 7
Building-up process divides work two step.The first step reaction is same as embodiment 1 the first step, obtains corresponding monobromo intermediate; Second step reaction is same as embodiment 1 second step, the monobromo intermediate in embodiment 1 is replaced with the monobromo intermediate of the first step synthesis, with 4-(2-phenylimidazole also [ 1,2, a ] pyridin-3-yl) phenylo boric acid replaces 2,3-diphenyl-imidazole also [ 1,2, a ] pyridine-6-boric acid, other reagent and process constant, obtain compound 7.
Product MS(m/e): 629, ultimate analysis (C
46h
35n
3): theoretical value C:87.73%, H:5.60%, N:6.67%; Measured value C:87.74%, H:5.63%, N:6.63%.
Embodiment 8
The synthesis of compound 8
Building-up process divides work two step.The first step reaction be same as embodiment 1 the first step, with 1-naphtyl phenyl amine replace pentanoic make raw material, other reagent and process constant, obtain corresponding monobromo intermediate; Second step reaction is same as embodiment 1 second step, the monobromo intermediate in embodiment 1 is replaced with the monobromo intermediate of the first step synthesis, with 4-(2-phenylimidazole also [ 1,2, a ] pyridin-3-yl) phenylo boric acid replaces 2,3-diphenyl-imidazole also [ 1,2, a ] pyridine-6-boric acid, other reagent and process constant, obtain compound 8.
Product MS(m/e): 679, ultimate analysis (C
50h
37n
3): theoretical value C:88.33%, H:5.49%, N:6.18%; Measured value C:88.36%, H:5.50%, N:6.14%.
Embodiment 9
The synthesis of compound 9
Building-up process divides work two step.The first step reaction is same as embodiment 1 the first step, obtains corresponding monobromo intermediate; Second step reaction is same as embodiment 1 second step, replaces the monobromo intermediate in embodiment 1 with the monobromo intermediate of the first step synthesis, other reagent and process constant, obtain compound 9.
Product MS(m/e): 745, ultimate analysis (C
55h
43n
3): theoretical value C:88.56%, H:5.81%, N:5.63%; Measured value C:88.58%, H:5.83%, N:5.59%.
Embodiment 10
The synthesis of compound 10
Building-up process divides work two step.The first step reaction be same as embodiment 1 the first step, with 1-naphtyl phenyl amine replace pentanoic make raw material, other reagent and process constant, obtain corresponding monobromo intermediate; Second step reaction is same as embodiment 1 second step, replaces the monobromo intermediate in embodiment 1 with the monobromo intermediate of the first step synthesis, other reagent and process constant, obtain compound 10.
Product MS(m/e): 795, ultimate analysis (C
59h
45n
3): theoretical value C:89.02%, H:5.70%, N:5.28%; Measured value C:89.06%, H:5.71%, N:5.23%.
Embodiment 11
The synthesis of compound 11
Building-up process divides work two step.The first step reaction is same as embodiment 1 the first step, obtains corresponding monobromo intermediate; Second step reaction is same as embodiment 1 second step, the monobromo intermediate in embodiment 1 is replaced with the monobromo intermediate of the first step synthesis, with 2,3-diphenyl-imidazole also [ 1,2, a ] pyridine-7-boric acid replacement 2,3-diphenyl-imidazole is [ 1,2, a ] pyridine-6-boric acid also, other reagent and process constant, obtain compound 11.
Product MS(m/e): 745, ultimate analysis (C
55h
43n
3): theoretical value C:88.56%, H:
5.81%, N:5.63%; Measured value C:88.53%, H:5.80%, N:5.67%.
Embodiment 12
The synthesis of compound 12
Building-up process divides work two step.The first step reaction be same as embodiment 1 the first step, with 1-naphtyl phenyl amine replace pentanoic make raw material, other reagent and process constant, obtain corresponding monobromo intermediate; Second step reaction is same as embodiment 1 second step, the monobromo intermediate in embodiment 1 is replaced with the monobromo intermediate of the first step synthesis, with 2,3-diphenyl-imidazole also [ 1,2, a ] pyridine-7-boric acid replacement 2,3-diphenyl-imidazole is [ 1,2, a ] pyridine-6-boric acid also, other reagent and process constant, obtain compound 12.
Product MS(m/e): 795, ultimate analysis (C
59h
45n
3): theoretical value C:89.02%, H:5.70%, N:5.28%; Measured value C:89.00%, H:5.64%, N:5.36%.
Embodiment 13
The synthesis of compound 13
Building-up process divides work two step.The first step reaction is same as embodiment 1 the first step, obtains corresponding monobromo intermediate; Second step reaction is same as embodiment 1 second step, the monobromo intermediate in embodiment 1 is replaced with the monobromo intermediate of the first step synthesis, with 4-(3-phenylimidazole also [ 1,2, a ] pyridine-2-base) phenylo boric acid replaces 2,3-diphenyl-imidazole also [ 1,2, a ] pyridine-6-boric acid, other reagent and process constant, obtain compound 13.
Product MS(m/e): 745, ultimate analysis (C
55h
43n
3): theoretical value C:88.56%, H:5.81%, N:5.63%; Measured value C:88.52%, H:5.80%, N:5.68%.
Embodiment 14
The synthesis of compound 14
Building-up process divides work two step.The first step reaction be same as embodiment 1 the first step, with 1-naphtyl phenyl amine replace pentanoic make raw material, other reagent and process constant, obtain corresponding monobromo intermediate; Second step reaction is same as embodiment 1 second step, the monobromo intermediate in embodiment 1 is replaced with the monobromo intermediate of the first step synthesis, with 4-(3-phenylimidazole also [ 1,2, a ] pyridine-2-base) phenylo boric acid replaces 2,3-diphenyl-imidazole also [ 1,2, a ] pyridine-6-boric acid, other reagent and process constant, obtain compound 14.
Product MS(m/e): 795, ultimate analysis (C
59h
45n
3): theoretical value C:89.02%, H:5.70%, N:5.28%; Measured value C:89.05%, H:5.68%, N:5.27%.
Embodiment 15
The synthesis of compound 15
Building-up process divides work two step.The first step reaction is same as embodiment 1 the first step, obtains corresponding monobromo intermediate; Second step reaction is same as embodiment 1 second step, the monobromo intermediate in embodiment 1 is replaced with the monobromo intermediate of the first step synthesis, with 4-(2-phenylimidazole also [ 1,2, a ] pyridin-3-yl) phenylo boric acid replaces 2,3-diphenyl-imidazole also [ 1,2, a ] pyridine-6-boric acid, other reagent and process constant, obtain compound 15.
Product MS(m/e): 745, ultimate analysis (C
55h
43n
3): theoretical value C:88.56%, H:5.81%, N:5.63%; Measured value C:88.58%, H:5.83%, N:5.59%.
Embodiment 16
The synthesis of compound 16
Building-up process divides work two step.The first step reaction be same as embodiment 1 the first step, with 1-naphtyl phenyl amine replace pentanoic make raw material, other reagent and process constant, obtain corresponding monobromo intermediate; Second step reaction is same as embodiment 1 second step, the monobromo intermediate in embodiment 1 is replaced with the monobromo intermediate of the first step synthesis, with 4-(2-phenylimidazole also [ 1,2, a ] pyridin-3-yl) phenylo boric acid replaces 2,3-diphenyl-imidazole also [ 1,2, a ] pyridine-6-boric acid, other reagent and process constant, obtain compound 16.
Product MS(m/e): 795, ultimate analysis (C
59h
45n
3): theoretical value C:89.02%, H:5.70%, N:5.28%; Measured value C:89.01%, H:5.69%, N:5.30%.
Embodiment 17
The synthesis of compound 17
Building-up process divides work two step.The first step reaction is same as embodiment 1 second step, with the iodo-tetramethyl-indeno [ 3 of the bromo-7-of 2-, 2, b ] iodo-9, the 9-dimethyl fluorenes of the fluorenes replacement bromo-7-of 2-, 2 are replaced with triphenylamine-4-boric acid, 3-diphenyl-imidazole also [ 1,2, a ] pyridine-6-boric acid makes raw material, other reagent and process constant, obtain corresponding monobromo intermediate; Second step reaction is same as embodiment 1 second step, replaces the monobromo intermediate in embodiment 1 with the monobromo intermediate of the first step synthesis, other reagent and process constant, obtain compound 17.
Product MS(m/e): 821, ultimate analysis (C
61h
47n
3): theoretical value C:89.13%, H:5.76%, N:5.11%; Measured value C:89.15%, H:5.73%, N:5.12%.
Embodiment 18
The synthesis of compound 18
Building-up process divides work two step.The first step reaction is same as embodiment 1 second step, with the iodo-tetramethyl-indeno [ 3 of the bromo-7-of 2-, 2, b ] iodo-9, the 9-dimethyl fluorenes of the fluorenes replacement bromo-7-of 2-, 2 are replaced with triphenylamine-4-boric acid, 3-diphenyl-imidazole also [ 1,2, a ] pyridine-6-boric acid makes raw material, other reagent and process constant, obtain corresponding monobromo intermediate; Second step reaction is same as embodiment 1 second step, replaces the monobromo intermediate in embodiment 1, with 2,3-diphenyl-imidazole also [ 1,2, a ] pyridine-7-with the monobromo intermediate of the first step synthesis
Boric acid replaces 2,3-diphenyl-imidazole also [ 1,2, a ] pyridine-6-boric acid, other reagent and process constant, obtain compound 18.
Product MS(m/e): 821, ultimate analysis (C
61h
47n
3): theoretical value C:89.13%, H:5.76%, N:5.11%; Measured value C:89.11%, H:5.74%, N:5.15%.
Embodiment 19
The synthesis of compound 19
Building-up process divides work two step.The first step reaction is same as embodiment 1 second step, with the iodo-tetramethyl-indeno [ 3 of the bromo-7-of 2-, 2, b ] iodo-9, the 9-dimethyl fluorenes of the fluorenes replacement bromo-7-of 2-, 2 are replaced with triphenylamine-4-boric acid, 3-diphenyl-imidazole also [ 1,2, a ] pyridine-6-boric acid makes raw material, other reagent and process constant, obtain corresponding monobromo intermediate; Second step reaction is same as embodiment 1 second step, the monobromo intermediate in embodiment 1 is replaced with the monobromo intermediate of the first step synthesis, with 4-(3-phenylimidazole also [ 1,2, a ] pyridine-2-base) phenylo boric acid replaces 2,3-diphenyl-imidazole also [ 1,2, a ] pyridine-6-boric acid, other reagent and process constant, obtain compound 19.
Product MS(m/e): 821, ultimate analysis (C
61h
47n
3): theoretical value C:89.13%, H:5.76%, N:5.11%; Measured value C:89.10%, H:5.72%, N:5.18%.
Embodiment 20
The synthesis of compound 20
Building-up process divides work two step.The first step reaction is same as embodiment 1 second step, with the iodo-tetramethyl-indeno [ 3 of the bromo-7-of 2-, 2, b ] iodo-9, the 9-dimethyl fluorenes of the fluorenes replacement bromo-7-of 2-, 2 are replaced with triphenylamine-4-boric acid, 3-diphenyl-imidazole also [ 1,2, a ] pyridine-6-boric acid makes raw material, other reagent and process constant, obtain corresponding monobromo intermediate; Second step reaction is same as embodiment 1 second step, the monobromo intermediate in embodiment 1 is replaced with the monobromo intermediate of the first step synthesis, with 4-(3-phenylimidazole also [ 1,2, a ] pyridine-2-base) phenylo boric acid replaces 2,3-diphenyl-imidazole also [ 1,2, a ] pyridine-6-boric acid, other reagent and process constant, obtain compound 20.
Product MS(m/e): 821, ultimate analysis (C
61h
47n
3): theoretical value C:89.13%, H:5.76%, N:5.11%; Measured value C:89.16%, H:5.77%, N:5.07%.
Embodiment 21
The synthesis of compound 21
Building-up process divides work two step.The first step reaction is same as embodiment 1 second step, the bromo-7-of 2-iodo-9 is replaced with the bromo-7-of 2-iodo-tetramethyl-indeno [ 3,2, b ] fluorenes, 9-dimethyl fluorene, with 4 ', 4 '-dimethyltrianiline-4-boric acid replaces 2,3-diphenyl-imidazole also [ 1,2, a ] pyridine-6-boric acid makes raw material, other reagent and process constant, obtain corresponding monobromo intermediate; Second step reaction is same as embodiment 1 second step, the monobromo intermediate in embodiment 1 is replaced with the monobromo intermediate of the first step synthesis, with 4-(3-phenylimidazole also [ 1,2, a ] pyridine-2-base) phenylo boric acid replaces 2,3-diphenyl-imidazole also [ 1,2, a ] pyridine-6-boric acid, other reagent and process constant, obtain compound 21.
Product MS(m/e): 849, ultimate analysis (C
63h
51n
3): theoretical value C:89.01%, H:6.05%, N:4.94%; Measured value C:89.03%, H:6.07%, N:4.90%.
Embodiment 22
The synthesis of compound 22
Building-up process divides work two step.The first step reaction is same as embodiment 1 second step, the bromo-7-of 2-iodo-9 is replaced with the bromo-7-of 2-iodo-tetramethyl-indeno [ 3,2, b ] fluorenes, 9-dimethyl fluorene, with 4 ', 4 '-dimethyltrianiline-4-boric acid replaces 2,3-diphenyl-imidazole also [ 1,2, a ] pyridine-6-boric acid makes raw material, other reagent and process constant, obtain corresponding monobromo intermediate; Second step reaction is same as embodiment 1 second step, the monobromo intermediate in embodiment 1 is replaced with the monobromo intermediate of the first step synthesis, with 4-(2-phenylimidazole also [ 1,2, a ] pyridin-3-yl) phenylo boric acid replaces 2,3-diphenyl-imidazole also [ 1,2, a ] pyridine-6-boric acid, other reagent and process constant, obtain compound 22.
Product MS(m/e): 849, ultimate analysis (C
63h
51n
3): theoretical value C:89.01%, H:6.05%, N:4.94%; Measured value C:89.02%, H:6.03%, N:4.95%.
Here is the Application Example of the compounds of this invention:
Embodiment 23: the preparation of electroluminescent device and result
The preferred implementation of fabricate devices:
(1) device layout
Conveniently compare the performance of these materials, the present invention devises a simple electroluminescent device (substrate/anode/hole transmission layer (HTL)/phosphorescent coloring/phosphorescence host (EL)/electron transfer layer (ETL)/negative electrode), only use compound 1,4,5,8,10,13,15,18,22 as phosphorescent light body material illustration, CBP or NPB or mCP as phosphorescence host comparative material, Ir(ppy)
3, Ir (piq)
3with Firpic respectively as phosphorescent coloring.The structure of CBP and phosphorescent coloring is:
Substrate can use the substrate in conventional organic luminescence device, such as: glass or plastics.In element manufacturing of the present invention, select glass substrate, ITO makes anode material.
Hole transmission layer can adopt various tri-arylamine group material.Hole mobile material selected in element manufacturing of the present invention is NPB.
Electron transport material selected in element manufacturing of the present invention is Bphen.
Negative electrode can adopt metal and composition thereof structure, as Mg:Ag, Ca:Ag etc., can be also electron injecting layer/metal-layer structure, as LiF/Al, Li
2the common cathode structures such as O/Al.Electron injection material selected in element manufacturing of the present invention is LiF, and cathode material is Al.
(2) element manufacturing
Sheet glass supersound process in commercial detergent of ITO transparency conducting layer will be coated with; rinse in deionized water, at acetone: ultrasonic oil removing in alcohol mixed solvent, be baked under clean environment and remove moisture content completely; by UV-light and ozone clean, and with low energy positively charged ion bundle bombarded surface;
The above-mentioned glass substrate with anode is placed in vacuum chamber, is evacuated to 1 × 10
-5~ 9 × 10
-3pa, on above-mentioned anode tunic, vacuum evaporation NPB is as hole transmission layer, and evaporation rate is 0.1nm/s, and evaporation thickness is 40nm;
Vacuum evaporation phosphorescent light body material 1,4,5,8,10,13,15,18,22 of the present invention on hole transmission layer, is total to evaporation phosphorescent coloring Ir(ppy simultaneously)
3(or FIrpic, or Ir(piq)
3), phosphorescent light body material also can replace with CBP or NPB or mCP.Phosphorescence host and dyestuff are total to the luminescent layer of evaporation as device, evaporation rate is 0.1nm/s, evaporation total film thickness is 30nm, luminescent dye Ir(ppy) 3 doping content be 10%, the doping content of FIrpic is 12%, Ir(piq) doping content of 3 is 5%, doping content mentioned here refers to that the evaporation rate ratio of luminescent dye and material of main part is 10:100,12:100,5:100;
On luminescent layer, vacuum evaporation one deck compd B phen is as the electron transfer layer of device, and its evaporation rate is 0.1nm/s, and evaporation total film thickness is 20nm;
At the upper vacuum evaporation LiF of electron transfer layer (ETL) as electron injecting layer, thickness 0.5nm.On LiF layer, evaporating Al layer is as the negative electrode of device, and thickness is 150nm.
Device performance sees the following form (device architecture: ITO/NPB(40nm)/phosphorescent coloring/phosphorescence host (30nm)/Bphen(20nm)/LiF(0.5nm)/Al(150nm))
Luminescent layer |
Require brightness cd/m
2 |
Voltage V |
Current density A/m
2 |
Current efficiency cd/A |
Glow color |
CBP:Ir(ppy)3 |
1000 |
4.1 |
31.25 |
32.2 |
Green glow |
1:Ir(ppy)3 |
1000 |
3.6 |
28.01 |
35.7 |
Green glow |
4:Ir(ppy)3 |
1000 |
3.7 |
27.62 |
36.2 |
Green glow |
5:Ir(ppy)3 |
1000 |
3.6 |
27.85 |
35.9 |
Green glow |
8:Ir(ppy)3 |
1000 |
3.8 |
26.38 |
37.9 |
Green glow |
NPB:Ir(piq)3 |
1000 |
4.5 |
140.84 |
7.1 |
Ruddiness |
10:Ir(piq)3 |
1000 |
4.2 |
123.45 |
8.1 |
Ruddiness |
13:Ir(piq)3 |
1000 |
4.3 |
128.20 |
7.8 |
Ruddiness |
15:Ir(piq)3 |
1000 |
4.3 |
131.57 |
7.6 |
Ruddiness |
mCP:FIrpic |
1000 |
4.7 |
68.49 |
14.6 |
Blue light |
18:FIrpic |
1000 |
4.6 |
64.93 |
15.4 |
Blue light |
22:FIrpic |
1000 |
4.5 |
65.78 |
15.2 |
Blue light |
Above result shows, new organic materials of the present invention is used for organic electroluminescence device, can effectively reduce landing voltage, and improving current efficiency, is phosphorescence host of good performance.
Although describe the present invention in conjunction with the embodiments, the present invention is not limited to above-described embodiment, should be appreciated that, under the guiding of the present invention's design, those skilled in the art can carry out various amendment and improvement, and claims summarise scope of the present invention.