CN101125913A - 9,9-disubstitution-3,6-fluorenes polymer, preparing method and application thereof - Google Patents
9,9-disubstitution-3,6-fluorenes polymer, preparing method and application thereof Download PDFInfo
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Abstract
The invention relates to 9, 9-disubstituent-3, 6-fluorine polymer and the preparation method and application thereof. The backbone chain of the polymer contains 9, 9-disubstitution-3, 6-fluorine unit compared with poly (9, 9 disubstituent-2, 7-fluorine). The polymer of the invention is macromolecule material of broadband backlash and ultraviolet light, which is copolymerized with narrowband backlash (singlet, triplet) monomer and can realize luminescence of the whole visible region through energy transfer. The polymer of the invention is appropriately used for light-emitting diode, luminous layer of colorful flat panel display.
Description
Technical field
The invention belongs to organic polymer electroluminescent technology field, be specifically related to 9,9-two replaces-3,6-fluorenes polymer and preparation method thereof and application.
Technical background
The nineteen ninety univ cambridge uk Cavan enlightening electroluminescent of polystyrene support (PPV) of having been permitted people's reported first such as breadboard Burroughes, obtained the bluish-green coloured light output of direct-current biasing driving less than 14V, its external quantum efficiency is 0.05%, this discovery is cited as one of 1992 annual chemical field ten big achievements, and its article that is published on the Nature becomes significant works.Subsequently in 1991, the Alan J.Heeger group of University of California at Santa Barbara with the different octyloxy of methoxyl group replace poly-to vinylbenzene support (MEH-PPV) spin-coating film on ITO, made quantum yield and be 1% orange photodiode.From then on opened the prelude of high molecule electroluminescent research.A lot of academic institutions and some international famous big electronics, chemical companies all drop into huge manpower and materials and study this field.High molecule electroluminescent device (PLED) be from external quantum efficiency less than 0.1%, the life-span only begins to start to walk to grow up for several minutes, has obtained development at full speed now.Developed into external quantum efficiency at present and surpassed 10%, operation life was above up to ten thousand hours.Particularly operating voltage is low owing to its excellent performance, can be with battery-operated, and characteristics such as low in energy consumption are particularly suitable for and small-sized mobile communication equipment.The large-scale application of monochromatic miniscope is within sight.Each electronics corporation then concentrates on the exploitation of active driving full-color display spare at present, and its target is the display screen of hand-held computer.At auto-navigation system, mobile telephone and Backlight For Liquid Crystal Display Panels field, PLED is near commercialization.In addition, people make the PLED device with inkjet technology and have also obtained the living progress of essence.
One of challenge that realizes high-quality display is efficient, the stable red, green, blue three primary colours material of development.With respect to the research of polymkeric substance blue light material, the research of broad-band gap, blue outer photopolymer is less.The ultra-violet light-emitting polymkeric substance can be used as the method for broad-band gap material of main part by physical doping or chemical copolymerization (singlet, triplet state) and realizes the luminous of whole visibility region.The band gap of the polysilico fluorene isomer of report such as Cao Yong and Holmes-poly-(9,9-dialkyl group-3,6-silicon fluorenes) is 4.0eV, is the blue outer photopolymer of broad-band gap; And the band gap of gathering (9,9-dialkyl group-2,7-silicon fluorenes) wide only be 2.9eV, with common poly-(9,9-dialkyl group-2, the 7-fluorenes) band gap wide quite (a.Chem.Commun., 2005,39,4925.b.Chem.Commun., 2005,39,5766.c.J.Am.Chem.Soc., 2005,127,7662.).Cao Yong etc. mix up in broad-band gap material of main part poly-(9,9-dialkyl group-3,6-silicon fluorenes) blue light phosphor material Ir (PPF) 2 (PZ) as the luminescence activity layer, have obtained the external quantum efficiency (Appl.Phys.Lett., 2006,88,051116) up to 4.8%.Poly-(9,9-two replaces-2, the 7-fluorenes) and derivative thereof are typical blue light materials, have good light, heat and chemical stability, are considered to one of polymer blue light material that has most application potential.At present the poly-fluorenes and the derivant material thereof of bibliographical information all are based on 2, and poly-fluorenes and derivative thereof that the 7-position connects, and 3, poly-fluorenes that the 6-position connects and derivative thereof are that a class has more broad-band gap and the broad-band gap of Geng Gao triplet, blue outer photopolymer.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, from Molecular Structure Design, design synthetic wideband crack (9,9-disubstituted-3, the 6-fluorenes) homopolymer, and and the narrow band gap monomer copolymerization, shift to realize that by " intramolecularly " energy efficient, stable red, green and blue is luminous.Described based on 3, the spectrum stability of red, the green and blue streak multipolymer of 6-substituted fluorene class is good, is suitable for the luminescent layer as photodiode, color flat panel display.
(9,9-is disubstituted-3, the 6-fluorenes) provided by the present invention base polymer electroluminescent macromolecule material has following structure:
In the formula, x, y, z are the molar fraction of unit component, satisfy: x+y+z=1 (0≤x≤0.5,0≤z≤0.1); The polymerization degree (n)=10～300; Wherein:
Be 9,9-two replaces-3, and the 6-fluorenes has one of following structure:
9,9-dialkyl group-3,6-substituted fluorene 9,9-diaryl-3,6-substituted fluorene 9,9-two (4-triphenylamine)-3,6-substituted fluorene
Wherein, R
1For carbonatoms is the alkyl of 1-10;
Ar is one of following narrow band gap aromatic nucleus conjugated structure unit:
9,9-dialkyl group-2,7-substituted fluorene N-alkyl-2,7-substituted carbazole N-alkyl-3,6-substituted carbazole
2,8-replaces titanium dioxide dibenzothiophen 4, and 7-replaces diazosulfide 3, and 7-replaces the sulfurous Anhydride fluorenes
4,7-dithienyl diazosulfide 4 ', 4 "-replace-2,5-phenylbenzene-1,3,4-Evil 3 ', 3 "-replace-2, the 5-phenylbenzene
Diazole-1,3, the 4-oxadiazole
4,7-replaces selenole 4,7-dithienyl selenole 2, and 8-replaces dibenzothiophen
Wherein, R
2For carbonatoms is the alkyl of 1-10
M is one of following cyclic metal complex unit:
3,6-substituted carbazole-beta-diketon-complex of iridium 3,6-substituted carbazole-beta-diketon-platinum complex
2,5-substituted alkoxy benzene-beta-diketon-complex of iridium 2,5-substituted alkoxy benzene-beta-diketon-platinum complex
2,7-substituted fluorene-beta-diketon-complex of iridium 2,7-substituted fluorene-beta-diketon-platinum complex
Replace two (2-phenylpyridine) complex of iridium and replace two (1-phenyl isoquinolin quinoline) complex of iridium
Replace two (2-phenylpyridine) complex of iridium generation two (2-thionaphthene yl pyridines) complex of iridium
Replace two (3-phenyl isoquinolin quinoline) complex of iridium and replace two (2-phenyl benzothiazole) complex of iridium
Replace two (2-(4-Phenoxymethyl) phenyl) pyridine) complex of iridium two (2-(2,4 difluorobenzene base) pyridine)-replacement-beta-diketon-complex of iridium
Two (2-phenyl isoquinolin quinoline)-replacement-beta-diketon-complex of iridium two (2-phenylpyridine)-replacement-beta-diketon-complex of iridium
Wherein, R=H
3Or CF
3, R
1=R
2=CH
3, CF
3, C (CH
3)
3,
The preparation of above-mentioned electroluminescent macromolecule (9,9-two replaces-3, the 6-fluorenes) polymkeric substance relates to monomeric synthetic and two kinds of polymerization processs.
(1) 9,9-two replaces-3, the monomeric preparation of 6-dibromo fluorenes
9,9-two replaces-3,6-dibromo fluorenes monomer:
9,9-dialkyl group-3,6-dibromo fluorenes 9,9-diaryl-3,6-dibromo fluorenes 9,9-two (4-triphen amido)-3,6-dibromo fluorenes
Wherein, R
1For being the alkyl of 1-10 for carbonatoms
The preparation method is as follows:
1) 3,6-two bromo-9, the preparation of 10-phenanthrenequione
With 9, the 10-phenanthrenequione is dissolved in the oil of mirbane, and bromination under tungsten lamp irradiation is poured reaction product in the dehydrated alcohol into, suction filtration, absolute ethanol washing repeatedly, drying obtains 3,6-two bromo-9, the 10-phenanthrenequione is directly used in the next step without being further purified;
2) 3, the preparation of 6-dibromo fluorenone
With 3,6-two bromo-9, the 10-phenanthrenequione adds the aqueous solution of potassium hydroxide, be heated to 85 ℃, gradation adds potassium permanganate, reflux then, cooling, suction filtration, washing, solid joins in the aqueous solution of sodium bisulfite of heat, cooling, suction filtration, drying is used the toluene extracting, obtains 3, the 6-dibromo fluorenone is directly used in the next step without being further purified;
3) 3, the preparation of 6-dibromo fluorenes
Prepare zinc amalgam with mercury chloride and zinc powder, add concentrated hydrochloric acid and 3, the 6-dibromo fluorenone, reflux, cooling, dichloromethane extraction, the saturated sodium bicarbonate washing, dry, concentrated, column chromatography for separation obtains 3,6-dibromo fluorenes;
4) 9,9-dialkyl group-3, the monomeric preparation of 6-dibromo fluorenes
Under nitrogen protection, add sodium hydride in the anhydrous tetrahydro furan, add bromo alkane and 3 successively, 6-dibromo fluorenes, reflux, cooling, add entry, with dilute hydrochloric acid neutralization, dichloromethane extraction, the saturated common salt water washing, dry, concentrated, remove unreacted bromo alkane under reduced pressure, column chromatography for separation, obtain 9,9-dialkyl group-3,6-dibromo fluorenes;
5) 9,9-diaryl-3, the monomeric preparation of 6-dibromo fluorenes
At first, with 3, the 6-dibromo fluorenone is dissolved in the ether, add aryl grignard reagent under nitrogen protection, reflux obtains 9-hydroxyl-9-aryl-3,6-dibromo fluorenes, again with 9-hydroxyl-9-aryl-3,6-dibromo fluorenes slowly splashes in the methanesulfonic acid solution of aromatic hydrocarbons, back flow reaction is poured reactant in the water into, separates organic phase, washing repeatedly, drying, recrystallization, obtain 9,9-diaryl-3,6-dibromo fluorenes;
6) 9,9-two (4-triphen amido)-3, the monomeric preparation of 6-dibromo fluorenes
3,6-dibromo fluorenone, triphenylamine and methylsulfonic acid are under nitrogen protection, and reflux is cooled off, washed with dichloromethane, and the residual solid column chromatography for separation obtains 9,9-two (4-triphen amido)-3,6-dibromo fluorenes.
(2) 9,9-are disubstituted-3,6-hypoboric acid ester fluorenes monomer:
9,9-dialkyl group-3,6-hypoboric acid ester fluorenes 9,9-diaryl-3,6-hypoboric acid ester fluorenes 9,9-two (4-triphen amido)-3,6-hypoboric acid
The ester fluorenes
Wherein, R
1For being the alkyl of 1-10 for carbonatoms
The preparation method is as follows:
Under the nitrogen protection, n-Butyl Lithium is joined 9 under-78 ℃, 9-two replaces-3, in the tetrahydrofuran (THF)/diethyl ether solution of 6-dibromo fluorenes; stirring reaction adds excessive 2-sec.-propyl-4,4 down at-78 ℃; 5,5-tetramethyl--1,3; 2-two oxa-pentaboranes, the stirring at room reaction is poured reactant in the water into; separate organic phase, dry, concentrated, column chromatography for separation; obtain 9,9-two replaces-3, the two boric acid ester fluorenes of 6-.
(3) preparation of (9,9-two replaces-3, the 6-fluorenes) base polymer
1) Suzuki polymerization
With 1 mol ratio 3; 3 of 6-hypoboric acid ester fluorene derivatives monomer, 0-1 mol ratio; two bromo comonomers of 6-dibromo fluorene derivatives monomer and 0-1 mol ratio are dissolved in the purified toluene; add mol ratio then and be 2-10 20% the tetraethyl ammonium hydroxide aqueous solution doubly, logical nitrogen deoxidation is under the nitrogen protection; add the palladium of 0.05-10% and the tricyclohexyl phosphine of 0.05-10%; be warming up to 90 ℃, reaction 48h adds phenylo boric acid and bromobenzene successively and carries out end-blocking.Methanol extraction filters, and is eluent with toluene, and silica gel column chromatography separates, and concentrates, and methanol extraction filters, and vacuum-drying obtains fibrous polymer.
2) Yamamoto polymerization
Under nitrogen protection, nickel, 2 is closed in two (1, the 5-cyclooctadiene) of equimolar amount; 2 '-dipyridyl and 1; the 5-cyclooctadiene is dissolved in anhydrous N, and dinethylformamide is heated to 80 ℃; reaction 0.5h; form active catalyst, add 3, the anhydrous toluene solution of 6-dibromo fluorene derivatives monomer and two bromo comonomers (total amount and catalyzer equimolar amount); 80 ℃ were reacted 3 days down, add the bromobenzene end-blocking.Methanol extraction filters, and is eluent with toluene, and silica gel column chromatography separates, and concentrates, and methanol extraction filters, and vacuum-drying obtains fibrous polymer.
Above technical scheme described (9,9-two replaces-3, the 6-fluorenes) base polymer all can be used for preparing the luminescent layer of photodiode and flat-panel monitor.
Description of drawings
Fig. 1 is the ultraviolet-visible and the photoluminescence spectra of poly-(9,9-dioctyl-3,6-fluorenes);
Fig. 2 is the electroluminescent spectrum of poly-(9,9-dioctyl-3,6-fluorenes);
Fig. 3 is the electroluminescent spectrum of (9,9-dioctyl-3,6-fluorenes-co-9,9-dioctyl-2,7-fluorenes) multipolymer;
Fig. 4 is the electroluminescent spectrum of (9,9-dioctyl-3,6-fluorenes-co-3,7-titanium dioxide dibenzothiophen) multipolymer;
Fig. 5 is the electroluminescent spectrum of (9,9-dioctyl-3,6-fluorenes-co-complex of iridium) multipolymer.
Embodiment
Below in conjunction with embodiment each component proposed by the invention is described, but the present invention is not limited to listed example.
1.9 9-two replaces-3,6-fluorenes class is monomeric synthetic
3, the preparation of 6-dibromo fluorenes
(1) 3,6-two bromo-9,10-phenanthrenequione synthetic
41.6g (0.2mol) 9,10-phenanthrenequione and 250mL exsiccant oil of mirbane add in the 500mL there-necked flask, magnetic agitation, oil bath is warming up to 120 ℃, is added dropwise to 70.3g (0.44mol) liquid bromine under the tungsten lamp irradiation, and 1.5h drips complete, continue to stir 20h down at 130 ℃, cooling adds the 200mL dehydrated alcohol, suction filtration, absolute ethanol washing, vacuum-drying, obtain the 72.8g yellow solid, yield 99.4% is not further purified, and is directly used in the next step.
1H NMR,
13C NMR and GC-MASS test shows are target product.
Synthesizing of (2) 3,6-two bromo-9-Fluorenones
13g (35.5mmol) 3,6-two bromo-9,10-phenanthrenequione, 56g (1mol) KOH and 250ml water add in the 500mL there-necked flask, are warming up to 120 ℃, stir 5h, and gradation adds 29g (184mmol) KMnO in 1h
4, finish backflow 2h, cooling, suction filtration, washing.Solid suspension is heated to boiling in 50ml water, add 20g (192mmol) NaHSO
3, suction filtration while hot, drying obtains yellow solid.Product carries out extracting with toluene, obtains 9.7g glassy yellow tabular crystal, yield 80.8%.
1H NMR,
13C NMR and GC-MASS test shows are target product.
Synthesizing of (3) 3,6-dibromo fluorenes
In the 150mL single port bottle, add 3.4g (12.5mmol) HgCl
2, 3mL concentrated hydrochloric acid and 80mL water, vigorous stirring, disposable adding 32g (492mmol) Zn powder stirs 15min, inclining water, washes with water twice.Add 10g (29.6mmol) 3 then, 6-dibromo fluorenone, 40mL toluene and 36mL concentrated hydrochloric acid, magnetic agitation, reflux 26h, during every interval 6h add the 10mL concentrated hydrochloric acid.Tell organic phase, (2 * 30ml) extractions merge organic phase to water, use saturated sodium bicarbonate and saturated common salt water washing successively, anhydrous MgSO with methylene dichloride
4After dry and concentrated, column chromatography for separation (silica gel, sherwood oil/methylene dichloride) obtains 2.5g white solid, yield 26.1%.
1H NMR,
13C NMR and GC-MASS test shows are target product.
Embodiment 2
3,6-two bromo-9,9-dioctyl fluorene synthetic
In the 100mL there-necked flask, add 2.1g (52.5mmol) NaH (60%, be scattered in the mineral oil), 4g (12.3mmol) 3,6-dibromo fluorenes and 25mL exsiccant tetrahydrofuran (THF), under argon shield, stirring at room 0.5h.In 1h, be added dropwise to 5.4g (28mmol) 1-bromooctane, finish reflux 24h.Cooling, with dilute hydrochloric acid neutralization, use then dichloromethane extraction (2 * 30ml), merge organic phase, saturated common salt water washing, anhydrous MgSO
4After dry, concentrated, steam unreacted 1-bromooctane in decompression, column chromatography for separation (silica gel, sherwood oil) is separated then, obtains the 6.50g colorless oil, yield 96.0%.
1H NMR,
13C NMR and GC-MASS test shows are target product.
Embodiment 3
9,9-dioctyl-3, the preparation of 6-hypoboric acid ester fluorenes
Under the nitrogen protection, in the 100mL there-necked flask, add 4g (7.3mmol) 3,6-two bromo-9; the anhydrous THF of 9-dioctyl fluorene and 50mL is cooled to-78 ℃, drips the hexane solution (2.5M) of 7.3mL (18.3mmol) n-Butyl Lithium; maintain the temperature at-78 ℃, drip and finish, stirred 2 hours.One secondary adding 8.15g (44mmol) 2-sec.-propyl-4,4,5,5-tetramethyl--1,3,2-two oxa-pentaboranes are warmed up to stirred overnight at room temperature gradually, reactant are poured in the water into extracted with diethyl ether, saturated common salt water washing, anhydrous magnesium sulfate drying.Filter, be spin-dried for, column chromatography for separation obtains the colourless sticking shape solid of 4.03g, yield 86%.
1H NMR,
13C NMR and GC-MASS test shows are target product.
2. the conjugative monomer of metal-containing complex is synthetic
Embodiment 4
Prepare according to (Chem.Eur.J., 2005,11,5007) disclosed method.
The hydrate of 282mg (1.68mmol) 5-bromo-p-methylphenyl pyridine and 178mg (0.56mmol) iridous chloride is dissolved in the 10mL ethylene glycol monoethyl ether, logical nitrogen 0.5h, add 5mL distilled water, reflux 24h, cooling, filtration, washing and washing with alcohol, with methylene dichloride/normal hexane recrystallization, obtain bridging dimer 476mg yellow solid.This solid is dissolved in the 8mL ethylene glycol monoethyl ether, adds 22mg (0.22mmol) methyl ethyl diketone and 13mg yellow soda ash, under the nitrogen protection, and backflow 13h.Cooling is filtered, washing, and methyl alcohol is washed, and column chromatography for separation obtains yellow powder, productive rate 75%.
1H NMR,
13C NMR and ESI-MASS test shows are target product.
Embodiment 5
(1) 11-bromo-dodecane-2-ketone is synthetic
Prepare according to (J.Am.Chem.Soc., 2003,125,636) disclosed method
10g (37.7mmol) 11-bromine undeeanoic acid is dissolved among the anhydrous THF of 300mL, under the nitrogen protection, is cooled to-78 ℃, drip 47mL (75.4mmol, 1.6M) CH
3The diethyl ether solution of Li, 30min drips complete.After stirring 2h under-78 ℃, be warming up to 0 ℃ naturally.Use the saturated ammonium chloride solution termination reaction, extracted with diethyl ether, washing, anhydrous magnesium sulfate drying, filtration, column chromatography for separation obtain the 7g colourless liquid, productive rate 70%.
1H NMR,
13C NMR and GC-MASS test shows are target product.
(2) 12-(3,6-two bromo-9H-carbazole-9-yls) dodecane-2-ketone
Prepare according to (Macromolecules, 2005,38,4072) disclosed method.
Under nitrogen protection, and the sodium hydride of adding 60% in the 250mL flask (1.104,27.6mmol), drip 3 while stirring with the anhydrous THF of 25mL; the THF solution of 6-dibromo carbazole finishes, and stirring at normal temperature 30min is heated to backflow; add 4.5g (17.2mmol) 11-bromo-dodecane-2-ketone (a), reflux 24h, cooling; slowly add entry, use dichloromethane extraction, washing; anhydrous magnesium sulfate drying filters, and is spin-dried for; the solid ethyl alcohol recrystallization obtains white crystal, productive rate 60%.
1H NMR,
13C NMR and GC-MASS test shows are target product.
(3) 14-(3,6-two bromo-9H-carbazole-9-yls)-1,1, the 1-trifluoro tetradecane-2,4-diketone
Prepare according to (Macromolecules, 2005,38,4072) disclosed method.
8g 12-(3,6-two bromo-9H-carbazole-9-yls) dodecane-2-ketone is dissolved in the 120mL methyl n-butyl ether, is warming up to backflow.Ethanol (10mL) solution that adds the 5g sodium methylate, backflow 1h. drips the 20mL Trifluoroacetic Acid Ethyl Ester, 10min drips more, continue backflow 12h. adding frozen water and acetic acid,diluted and be acidified to the pH=6. extracted with diethyl ether, the saturated sodium bicarbonate washing, anhydrous magnesium sulfate drying, filtration, evaporating column separation obtain 5g white solid, productive rate 60%.
1H NMR,
13C NMR and GC-MASS test shows are target product.
(4) complex of iridium is monomeric synthetic
According to (Bull.Chem.Soc.Jap., 1974,47,767. and Inorg.Chem., 2001,40,1704) disclosed method preparation.
With the hydrate (178mg of 2-phenylpyridine (1.5mmol) with iridous chloride, 0.56mmol) be dissolved in the 15mL ethylene glycol monoethyl ether, logical nitrogen 0.5h adds 5mL distilled water and 100mg benchmark NaCl, reflux 28h, cold filtration obtain 200mg target product bridging dimer.
With 500mg 14-(3,6-two bromo-9H-carbazole-9-yls)-1,1, the 1-trifluoro tetradecane-2,4-diketone (b) is dissolved in the 30mL methylene dichloride with the bridging dimer of 85mg iridium, adds the 1.2g TBAH.Backflow 12h, cooling removes and desolvates, and column chromatography for separation obtains the 130mg complex of iridium.
1H NMR,
13C NMR and ESI-MASS test shows are target product.
Embodiment 6
Prepare according to (SCI, 2006,10,1873) disclosed method.
In the 50mL there-necked flask, add the 20mL ethylene glycol monoethyl ether, 7mL water, 215mg (1.39mmo1) 2-phenylpyridine and 286mg (0.69mmol) potassium chloroplatinite are at N
2Under the gas shiled, be warming up to 80 ℃, react 24h under the magnetic agitation, cooling, suction filtration, solid be spent glycol list ether and petroleum ether successively, and vacuum-drying obtains chlorine bridging platinum complex, is directly used in the next step without being further purified.
With 188mg (0.328mmol) chlorine bridging platinum complex, 67mg (110mmol) 14-(3,6-two bromo-9H-carbazole-9-yls)-1,1, the 1-trifluoro tetradecane-2,4-diketone (b), 360mg yellow soda ash and 18mL ethylene glycol monoethyl ether join in the 50mL there-necked flask, at N
2Under the gas shiled, be warming up to 100 ℃, magnetic agitation, reaction 24h, cooling removes and desolvates, and column chromatography for separation obtains the 95mg platinum complex.
1HNMR,
13C NMR and ESI-MASS test shows are target product.
3. polymkeric substance is synthetic
Embodiment 7
The preparation of poly-(9,9-dioctyl-3,6-fluorenes)
Under nitrogen protection, 0.165g (0.6mmol) two (1, the 5-cyclooctadiene) closes nickel, 0.094g (0.6mmol) 2; 2 '-dipyridyl and 0.065g (0.6mmol) 1,5-cyclooctadiene are dissolved in the anhydrous N of 1mL, dinethylformamide; be heated to 80 ℃; reaction 0.5h forms active catalyst, adds 0.6mmol 3; the monomeric anhydrous toluene solution of 6-dibromo fluorene derivatives (5mL); 80 ℃ are reacted 3d down, add 314mg (2mmol) bromobenzene end-blocking, continue reaction 24h.Methanol extraction filters, and is eluent with toluene, and silica gel column chromatography separates, and concentrates, and methanol extraction filters, and vacuum-drying obtains white fibrous polymer 188mg, yield 80%.Number-average molecular weight is 7000, and polydispersity coefficient is 1.8.
Film absorption spectrum and fluorescence spectrum that this polymers soln spin coating on quartz substrate is become are seen accompanying drawing 1.The element manufacturing condition is with embodiment 11.Device electroluminescent properties: open bright voltage 11.5V, high-high brightness 115cd/m
2, maximum external quantum efficiency 0.13%, its electroluminescent spectrum is seen accompanying drawing 2.
Embodiment 8
The preparation of (9,9-dioctyl-3,6-fluorenes-co-9,9-dioctyl-2,7-fluorenes) multipolymer
Add 321mg (0.5mmol) 9 in two mouthfuls of bottles of 50mL, 9-dioctyl 3,6-hypoboric acid ester fluorenes and 274mg (0.5mmol) 2; 7-two bromo-9, the 9-dioctyl fluorene is under the nitrogen protection; add the 2.5mg palladium; the 8mg tricyclohexyl phosphine; the 8mL refined toluene; the 2mL deionized water and the 1mL tetraethyl ammonium hydroxide aqueous solution (35%) are warming up to 90 ℃, reaction 48h; add the 20mg phenylo boric acid; reaction 6h adds the 0.3mL bromobenzene, continues reaction 6h; cooling; methanol extraction filters, and is eluent with toluene; silica gel column chromatography separates; concentrate, methanol extraction filters; vacuum-drying obtains fibrous polymer.Number-average molecular weight is 11000, and polydispersity coefficient is 2.0.
The element manufacturing condition is with embodiment 11.Device electroluminescent properties: open bright voltage 8.6V, high-high brightness 441cd/m
2, maximum external quantum efficiency 0.34%.Its electroluminescent spectrum is seen accompanying drawing 3.
Embodiment 9
The preparation of (9,9-dioctyl-3,6-fluorenes-co-3,7-titanium dioxide dibenzothiophen) multipolymer
Add 321mg (0.5mmol) 9 in two mouthfuls of bottles of 50mL, 9-dioctyl 3,6-hypoboric acid ester fluorenes; 27.4mg (0.1mmol) 3; 7-dibromo titanium dioxide dibenzothiophen and 219.2mg (0.4mmol) 3,6-two bromo-9,9-dioctyl fluorene; under the nitrogen protection, add the 2.5mg palladium; the 8mg tricyclohexyl phosphine; the 8mL refined toluene; the 2mL deionized water and the 1mL tetraethyl ammonium hydroxide aqueous solution (35%) are warming up to 90 ℃; reaction 48h; add the 20mg phenylo boric acid, reaction 6h adds the 0.3mL bromobenzene; continue reaction 6h; cooling, methanol extraction filters; with toluene is eluent; silica gel column chromatography separates, and concentrates methanol extraction; filter, vacuum-drying obtains fibrous polymer.Number-average molecular weight is 9500, and polydispersity coefficient is 1.8.
The element manufacturing condition is with embodiment 11.Device electroluminescent properties: open bright voltage 8.8V, high-high brightness 411cd/m
2, maximum external quantum efficiency 1.29%.Its electroluminescent spectrum is seen accompanying drawing 4.
Embodiment 10
The preparation of (9,9-dioctyl-3,6-fluorenes-co-complex of iridium) multipolymer
Add 321mg (0.5mmol) 9 in two mouthfuls of bottles of 50mL, 9-dioctyl-3,6-hypoboric acid ester fluorenes; 22mg (0.02mmol) complex of iridium and 263mg (0.48mmol) 3; 6-two bromo-9, the 9-dioctyl fluorene is under the nitrogen protection; add the 2.5mg palladium; the 8mg tricyclohexyl phosphine; the 8mL refined toluene; the 2mL deionized water and the 1mL tetraethyl ammonium hydroxide aqueous solution (35%); be warming up to 90 ℃, reaction 48h adds the 20mg phenylo boric acid; reaction 6h; add the 0.3mL bromobenzene, continue reaction 6h, cooling; methanol extraction; filtering, is eluent with toluene, and silica gel column chromatography separates; concentrate; methanol extraction filters, and vacuum-drying obtains fibrous polymer.Number-average molecular weight is 9800, and polydispersity coefficient is 1.9.
The element manufacturing condition is with embodiment 11.Device electroluminescent properties: open bright voltage 8V, high-high brightness 1100cd/m
2, maximum external quantum efficiency 4.3%.Its electroluminescent spectrum is seen accompanying drawing 5.
4. the preparation of polymer electroluminescent device
Embodiment 11
(device architecture is: making processes ITO/PEDOT/PVK/polymer/Ba/Al): ito glass is through after the ultrasonic cleaning for device, use oxygen plasma treatment, the square resistance of ito glass is 10 Ω/, spin coating one deck conducting polymer-PEDOT:PSS aqueous dispersions (about 1%) (available from Bayer company) subsequently, with the spin coating of sol evenning machine (KW-4A) high speed, thickness is by strength of solution and rotating speed decision, with surface profiler (Alpha-Tencor500 of Tritek company type) actual measurement monitoring.After the film forming; in the constant temperature vacuum drying oven, drive away solvent residues, post bake; spin coating one deck hole transmission layer PVK on the PEDOT layer subsequently; then with above synthetic polymer in white vase after the weighing; change nitrogen protection film forming special gloves case (VAC company) over to, in toluene, dissolve, with 0.45 micron membrane filtration; spin coating, polymer light-emitting layer optimum thickness is 70～90nm.At last, under the condition of high vacuum, the barium metal of coating by vaporization 4nm and the metallic aluminium of 120nm.
Claims (10)
1. one kind 9,9-two replaces-3, and the 6-fluorenes polymer is characterized in that containing 9 in its main chain, and 9-two replaces-3, and 6-fluorenes unit has following chemical structure:
In the formula, x, y, z are the molar fraction of unit component, satisfy: x+y+z=1,0≤x≤0.5,0≤z≤0.1; Polymerization degree n=10～300; Wherein:
9,9-dialkyl group-3,6-substituted fluorene 9,9-diaryl-3,6-substituted fluorene 9,9-two (4-triphenylamine)-3,6-substituted fluorene
Wherein, R
1For carbonatoms is the alkyl of 1-10;
Ar is one of following narrow band gap aromatic nucleus conjugated structure unit:
9,9-dialkyl group-2,7-substituted fluorene N-alkyl-2,7-substituted carbazole N-alkyl-3,6-substituted carbazole
Wherein, R
2For carbonatoms is the alkyl of 1-10;
M is one of following cyclic metal complex unit:
3,6-substituted carbazole-beta-diketon-complex of iridium 3,6-substituted carbazole-beta-diketon-platinum complex
2,5-substituted alkoxy benzene-beta-diketon-complex of iridium 2,5-substituted alkoxy benzene-beta-diketon-platinum complex
2,7-substituted fluorene-beta-diketon-complex of iridium 2,7-substituted fluorene-beta-diketon-platinum complex
Replace two (2-phenylpyridine) complex of iridium and replace two (1-phenyl isoquinolin quinoline) complex of iridium
Replace two (2-phenylpyridine) complex of iridium and replace two (2-thionaphthene yl pyridines) complex of iridium
Replace two (3-phenyl isoquinolin quinoline) complex of iridium and replace two (2-phenyl benzothiazole) complex of iridium
Replace two (2-(4-Phenoxymethyl) phenyl) pyridine) complex of iridium
Two (2-(2,4 difluorobenzene base) pyridine)-replacement-beta-diketon-iridium
Title complex
Two (2-phenyl isoquinolin quinoline)-replacement-beta-diketon-complex of iridium two (2-phenylpyridine)-replacement-beta-diketon-complex of iridium
Wherein, R=CH
3Or CF
3, R
1=R
2=CH
3, CF
3, C (CH
3)
3 
Be one of following structure:
2. claim 1 described 9; 9-two replaces-3; the preparation method of 6-fluorenes polymer; it is characterized in that adopting the Suzuki polymerization process; comprise 1 mol ratio 3; 6-hypoboric acid ester fluorene derivatives monomer; 3 of 0-1 mol ratio; two bromo narrow band gap comonomers of 6-dibromo fluorene derivatives monomer and 0-1 mol ratio are dissolved in the purified toluene; add mol ratio then and be 2-10 20% the tetraethyl ammonium hydroxide aqueous solution doubly, logical nitrogen deoxidation is under the nitrogen protection; add the palladium of 0.05-10% and the tricyclohexyl phosphine of 0.05-10%; be warming up to 90 ℃, reaction 48h adds phenylo boric acid and bromobenzene successively and carries out end-blocking.Methanol extraction filters, and is eluent with toluene, and silica gel column chromatography separates, and concentrates, and methanol extraction filters, and vacuum-drying obtains fibrous polymer.
3. method according to claim 2 is characterized in that describedly 3, and 6-dibromo fluorene derivatives monomer is 9,9-dialkyl group-3, and 6-dibromo fluorenes, 9,9-diaryl-3,6-dibromo fluorenes or 9,9-two (4-triphen amido)-3,6-dibromo fluorenes, its molecular structural formula is as follows:
9,9-dialkyl group-3,6-dibromo fluorenes 9,9-diaryl-3,6-dibromo fluorenes 9,9-two (4-triphen amido-3,6-dibromo fluorenes
Wherein, R
1For carbonatoms is the alkyl of 1-10.
4. method according to claim 3 is characterized in that describedly 3, and 6-dibromo fluorene derivatives is monomeric preparation method comprise the steps:
1) 3,6-two bromo-9, the preparation of 10-phenanthrenequione
With 9, the 10-phenanthrenequione is dissolved in the oil of mirbane, and bromination under tungsten lamp irradiation is poured reaction product in the dehydrated alcohol into, suction filtration, absolute ethanol washing repeatedly, drying obtains 3,6-two bromo-9, the 10-phenanthrenequione is directly used in the next step without being further purified;
2) 3, the preparation of 6-dibromo fluorenone
With 3,6-two bromo-9, the 10-phenanthrenequione adds the aqueous solution of potassium hydroxide, be heated to 85 ℃, gradation adds potassium permanganate, reflux then, cooling, suction filtration, washing, solid joins in the aqueous solution of sodium bisulfite of heat, cooling, suction filtration, drying is used the toluene extracting, obtains 3, the 6-dibromo fluorenone is directly used in the next step without being further purified;
3) 3, the preparation of 6-dibromo fluorenes
Prepare zinc amalgam with mercury chloride and zinc powder, add concentrated hydrochloric acid and 3, the 6-dibromo fluorenone, reflux, cooling, dichloromethane extraction, the saturated sodium bicarbonate washing, dry, concentrated, column chromatography for separation obtains 3,6-dibromo fluorenes;
4) 9,9-dialkyl group-3, the monomeric preparation of 6-dibromo fluorenes
Under nitrogen protection, in anhydrous tetrahydro furan, add sodium hydride, add bromo alkane and 3 successively, 6-dibromo fluorenes, reflux, cooling, add entry, with dilute hydrochloric acid neutralization, dichloromethane extraction, the saturated common salt water washing, dry, concentrated, remove unreacted bromo alkane under reduced pressure, column chromatography for separation, obtain 9,9-dialkyl group-3,6-dibromo fluorenes;
5) 9,9-diaryl-3, the monomeric preparation of 6-dibromo fluorenes
At first, with 3, the 6-dibromo fluorenone is dissolved in the ether, add aryl grignard reagent under nitrogen protection, reflux obtains 9-hydroxyl-9-aryl-3,6-dibromo fluorenes, again with 9-hydroxyl-9-aryl-3,6-dibromo fluorenes slowly splashes in the methanesulfonic acid solution of aromatic hydrocarbons, back flow reaction is poured reactant in the water into, separates organic phase, washing repeatedly, drying, recrystallization, obtain 9,9-diaryl-3,6-dibromo fluorenes; 6) 9,9-two (4-triphen amido)-3, the monomeric preparation of 6-dibromo fluorenes
3,6-dibromo fluorenone, triphenylamine and methylsulfonic acid are under nitrogen protection, and reflux is cooled off, washed with dichloromethane, and the residual solid column chromatography for separation obtains 9,9-two (4-triphen amido)-3,6-dibromo fluorenes.
5. method according to claim 4 is characterized in that describedly 3, and 6-hypoboric acid ester fluorene derivatives monomer is 9, and 9-two replaces-3, and the two boric acid ester fluorenes of 6-have one of following structure:
9,9-dialkyl group-3,6-hypoboric acid ester fluorenes 9,9-diaryl-3,6-hypoboric acid ester fluorenes 9,9-two (4-triphen amido)-3,6-hypoboric acid ester fluorenes
Wherein, R
1For being the alkyl of 1-10 for carbonatoms.
6. method according to claim 5 is characterized in that describedly 9, and 9-two replaces-3, and the preparation method of the two boric acid ester fluorenes of 6-comprises:
Under the nitrogen protection, n-Butyl Lithium is joined 9 under-78 ℃, 9-two replaces-3, in the tetrahydrofuran (THF)/diethyl ether solution of 6-dibromo fluorenes; stirring reaction adds excessive 2-sec.-propyl-4,4 down at-78 ℃; 5,5-tetramethyl--1,3; 2-two oxa-pentaboranes, the stirring at room reaction is poured reactant in the water into; separate organic phase, dry, concentrated, column chromatography for separation; obtain 9,9-two replaces-3, the two boric acid ester fluorenes of 6-.
7. claim 1 described 9; 9-two replaces-3; the preparation method of 6-fluorenes polymer; it is characterized in that adopting the Yanmamoto polymerization process; comprise: under nitrogen protection, nickel, 2 is closed in two (1, the 5-cyclooctadiene) of equimolar amount; 2 '-dipyridyl and 1; the 5-cyclooctadiene is dissolved in anhydrous N, and dinethylformamide is heated to 80 ℃; reaction 0.5h; form active catalyst, add 3, the anhydrous toluene solution of 6-dibromo fluorene derivatives monomer and two bromo narrow band gap comonomers (total amount and catalyzer equimolar amount); 80 ℃ were reacted 3 days down, add the bromobenzene end-blocking.Methanol extraction filters, and is eluent with toluene, and silica gel column chromatography separates, and concentrates, and methanol extraction filters, and vacuum-drying obtains fibrous polymer.
8. method according to claim 7 is characterized in that describedly 3, and 6-dibromo fluorene derivatives monomer is 9,9-dialkyl group-3, and 6-dibromo fluorenes, 9,9-diaryl-3,6-dibromo fluorenes or 9,9-two (4-triphen amido)-3,6-dibromo fluorenes, its molecular structural formula is as follows:
9,9-dialkyl group-3,6-dibromo fluorenes 9,9-diaryl-3,6-dibromo fluorenes 9,9-two (4-triphen amido)-3,6-dibromo fluorenes
Wherein, R
1For carbonatoms is the alkyl of 1-10.
9. method according to claim 8 is characterized in that describedly 3, and 6-dibromo fluorene derivatives is monomeric preparation method comprise the steps:
1) 3,6-two bromo-9, the preparation of 10-phenanthrenequione
With 9, the 10-phenanthrenequione is dissolved in the oil of mirbane, and bromination under tungsten lamp irradiation is poured reaction product in the dehydrated alcohol into, suction filtration, absolute ethanol washing repeatedly, drying obtains 3,6-two bromo-9, the 10-phenanthrenequione is directly used in the next step without being further purified;
2) 3, the preparation of 6-dibromo fluorenone
With 3,6-two bromo-9, the 10-phenanthrenequione adds the aqueous solution of potassium hydroxide, be heated to 85 ℃, gradation adds potassium permanganate, reflux then, cooling, suction filtration, washing, solid joins in the aqueous solution of sodium bisulfite of heat, cooling, suction filtration, drying is used the toluene extracting, obtains 3, the 6-dibromo fluorenone is directly used in the next step without being further purified;
3) 3, the preparation of 6-dibromo fluorenes
Prepare zinc amalgam with mercury chloride and zinc powder, add concentrated hydrochloric acid and 3, the 6-dibromo fluorenone, reflux, cooling, dichloromethane extraction, the saturated sodium bicarbonate washing, dry, concentrated, column chromatography for separation obtains 3,6-dibromo fluorenes;
4) 9,9-dialkyl group-3, the monomeric preparation of 6-dibromo fluorenes
Under nitrogen protection, in anhydrous tetrahydro furan, add sodium hydride, add bromo alkane and 3 successively, 6-dibromo fluorenes, reflux, cooling, add entry, with dilute hydrochloric acid neutralization, dichloromethane extraction, the saturated common salt water washing, dry, concentrated, remove unreacted bromo alkane under reduced pressure, column chromatography for separation, obtain 9,9-dialkyl group-3,6-dibromo fluorenes;
5) 9,9-diaryl-3, the monomeric preparation of 6-dibromo fluorenes
At first, with 3, the 6-dibromo fluorenone is dissolved in the ether, add aryl grignard reagent under nitrogen protection, reflux obtains 9-hydroxyl-9-aryl-3,6-dibromo fluorenes, again with 9-hydroxyl-9-aryl-3,6-dibromo fluorenes slowly splashes in the methanesulfonic acid solution of aromatic hydrocarbons, back flow reaction is poured reactant in the water into, separates organic phase, washing repeatedly, drying, recrystallization, obtain 9,9-diaryl-3,6-dibromo fluorenes;
6) 9,9-two (4-triphen amido)-3, the monomeric preparation of 6-dibromo fluorenes
3,6-dibromo fluorenone, triphenylamine and methylsulfonic acid are under nitrogen protection, and reflux is cooled off, washed with dichloromethane, and the residual solid column chromatography for separation obtains 9,9-two (4-triphen amido)-3,6-dibromo fluorenes.
10. the application of the described polymkeric substance of claim 1 in preparation photodiode, flat-panel monitor luminescent layer is characterized in that with organic solution by method film forming such as spin coating, spray ink Printing, printings, its thickness is the 50-100 nanometer.
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Effective date of registration: 20121106 Address after: 510730, A1 building, No. 11, Kaiyuan Avenue, Science City, Guangzhou hi tech Industrial Development Zone, Guangdong, first, second Patentee after: Guangzhou New Vision Optoelectronic Co., Ltd. Address before: 510640 Tianhe District, Guangdong, No. five road, No. 381, Patentee before: Guangzhou South China University of Technology Asset Management Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091209 Termination date: 20200918 |
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| CF01 | Termination of patent right due to non-payment of annual fee |