Boracic acid esters polyaryletherketone, azo polyaryletherketone and preparation method thereof
Technical field
The invention belongs to field of polymer material preparing technology, be specifically related to boracic acid esters polyaryletherketone material, the azo polyaryletherketone material being prepared by it and the preparation method of this bi-material.
Background technology
Azobenzene polymer because of its photic two-phase look, photopolymerizable liquid crystal change mutually,, the aspect such as photomechanical effect, nonlinear optical material, information storage, optical drive molecular switch and photonic material shows excellent photoresponse behavior, and shows huge application potential in reversible optical storage, all-optical switch, integrated optoelectronics and photon technology field.For the research and development of azo material, particularly synthetic, the structure of novel, high-performance optical responsive polymer material and the research of property relationship are the emphasis of scientific research personnel's concern all the time.Applied research using azo material as storage medium is at present still in basic stage, and the storage stability of azo material is still a problem demanding prompt solution.Temperature classification is high owing to having for polyarylether polymer, the over-all properties of chemical-resistant resistance, shock-resistant, good excellences such as dimensional stability has a wide range of applications in high-tech sectors such as aerospace, information, telecommunications.Method by azo group by rear grafting is incorporated in the polyarylether polymer of high glass-transition temperature, can improve significantly the storage stability of material.But currently used grafting method is generally the method for esterification, amidation and Liv Ullmann coupling, and these methods all exist some shortcomings.Ester bond, amido linkage as easy as rolling off a log hydrolysis under the effect of acid or alkali or even water, and the copper catalytic condition that Liv Ullmann coupling is used tends to cause the degraded of polyarylether main chain, thus cause the second-order transition temperature of polymkeric substance to decline.Thereby, select a kind of new research direction that method that the performance of polymkeric substance own can generate again stable product becomes this field that neither affects.
Summary of the invention
The object of the invention is to prepare boracic acid esters polyaryletherketone material by the boronation reaction of connection boron pinacol ester (Bis (pinacolato) diboron) and polyaryletherketone, and boracic acid esters polyaryletherketone material and iodo-4 '-(N, N-dimethyl amine) the nitrogen benzide monomer reaction preparation of 4-are contained to azo polyaryletherketone.
The present invention has selected the method for the reaction of 1,5-cyclooctadiene iridium chloride dimer catalysis boronation and four triphenylphosphine palladium catalysis borate esters and iodobenzene coupling, and profit is successfully incorporated into azo monomer in polyaryletherketone in this way.Not only can not affect the performance of polyaryletherketone itself, also can generate the biphenyl structural azo polyaryletherketone of stable performance, what the present invention synthesized is a kind of novel macromolecular material containing azo polyaryletherketone.
It is before this by dihydroxyphenyl propane and 4,4 '-bis-fluoro-benzophenone obtain respectively bisphenol A type polyaromatic ether ketone (PAEK) according to the molar ratio reaction of 1:1, again 1,5-cyclooctadiene iridium chloride dimer and 4,4 '-di-t-butyl-2, under the acting in conjunction of 2 '-dipyridyl, react with connection boron pinacol ester generation boronation, prepare the polyaryletherketone material of novel boracic acid esters; The polyaryletherketone of boracic acid esters generates novel containing azo polyaryletherketone material with iodo-4 '-(N, N-dimethyl amine) the nitrogen benzide monomer reaction of 4-under the acting in conjunction of four triphenylphosphine palladiums and salt of wormwood.
Boracic acid esters polyaryletherketone of the present invention is comprised of polyaryletherketone main chain and pinacol borate side chain, and wherein the content of pinacol borate is 15%~150%.
Boracic acid esters poly aryl ether ketone polymer of the present invention, is the bisphenol A type polyaromatic ether ketone of boracic acid esters, and its structural formula is
N is 15~25 integer, represents the polymerization degree;
2a+b+c=0.075~0.5, d=1-(2a+b+c); Or 2a+b+c=0.5~0.75, d=0;
The azo polyaryletherketone that contains of the present invention is comprised of polyaryletherketone main chain and azo side chain, according to the content of design azo, is wherein 15%~30%.
Of the present invention containing azo poly aryl ether ketone polymer, be the bisphenol A type polyaromatic ether ketone containing azo; Its structural formula is
The integer that wherein p is 12~20; 2e+f+g=0.075~0.15, k=1-(2e+f+g).
The preparation method of boracic acid esters polyaryletherketone material of the present invention, comprises that the synthetic and polyaryletherketone of polyaryletherketone reacts and prepares two steps of boracic acid esters polyaryletherketone process with connection pinacol borate boronation.
The preparation of described boracic acid esters polyaryletherketone, by dihydroxyphenyl propane and equimolar 4,4 '-difluoro benzophenone monomer, the Anhydrous potassium carbonate of 1.05~1.10 times of molar weights of dihydroxyphenyl propane monomer, 3~6 times to the organic solvent of reaction monomers (not comprising salt of wormwood) quality, the azeotropy dehydrant of organic solvent volume 20% is put into the there-necked flask that nitrogen through hole, mechanical stirring and water-taker are housed, logical nitrogen, start stirring, being warmed up to azeotropy dehydrant refluxes, react 1~3 hour, get rid of azeotropy dehydrant, be warmed up to 170~200 ℃ and continue reaction 7~10 hours; Then, the polymers soln obtaining is separated out in deionized water, through pulverizing, wash, being dried, obtain bisphenol A type polyaromatic ether ketone polymkeric substance.
In aforesaid method, organic solvent used can be dimethyl sulfoxide (DMSO), tetramethylene sulfone or N-Methyl pyrrolidone, and azeotropy dehydrant used can be toluene or dimethylbenzene.
Described polyaryletherketone and connection pinacol borate carry out boronation reaction and prepare boracic acid esters polyaryletherketone material, that bisphenol A type polyaromatic ether ketone and the connection pinacol borate that is 1.5~2 times of molar weights of its repeating unit are together encased in the container that is placed with stirrer, adding is 1 of 0.01~0.03 times of molar weight of connection pinacol borate again, 5-cyclooctadiene iridium chloride dimer ([IrCl (COD)]
2), be 4,4 '-di-t-butyl-2 of connection pinacol borate 0.02~0.04 times of molar weight, 2 '-dipyridyl, is filled with high pure nitrogen after vacuumizing, 3~5 times repeatedly, seal after adding organic solvent, at room temperature stirring reaction is 12~48 hours; Then organic solvent is removed in decompression, the polymkeric substance crude product acetone obtaining is washed 3~5 times, filter, dry, by the polymkeric substance obtaining, with after organic solvent dissolution, tlc silica gel filters 1~3 time, again polymkeric substance is washed 3~5 times with acetone, filter, vacuumize post-drying, obtain boracic acid esters polyaryletherketone material.
In above-mentioned reaction, organic solvent used is trichloromethane, tetrahydrofuran (THF) or dioxane etc.Adopting the solvent using in tlc silica gel filtration is trichloromethane, tetrahydrofuran (THF) or N,N-dimethylacetamide etc.
Preparation method containing azo polyaryletherketone material of the present invention, comprise the iodo-4 '-(N of 4-, N-dimethyl amine) the synthetic and boracic acid esters polyaryletherketone of nitrogen benzide monomer and iodo-4 '-(N, N-dimethyl amine) the nitrogen benzide monomer of 4-carry out the preparation of Suzuki-Miyaura linked reaction containing two steps such as azo polyaryletherketone materials.
Iodo-4 '-(the N of described 4-, N-dimethyl amine) nitrogen benzide monomer is synthetic, that 4-Iodoaniline is put into beaker, after adding water, stir into pasty state, dropwise splashing into is concentrated hydrochloric acid (10~15mol/L) solution of 3~5 times of molar weights of 4-Iodoaniline again, is cooled to-5~10 ℃ after reacting 1~2h; Then the Sodium Nitrite that is 2~3 times of molar weights of 4-Iodoaniline is dissolved in water, at-5~10 ℃, this solution is splashed in the hydrochloric acid soln of above-mentioned 4-Iodoaniline, after filtration, at-5~10 ℃, filtrate is dropwise added drop-wise to be again 2~5 times of molar weights of 4-Iodoaniline sodium acetate and be the N of 1~3 times of molar weight of 4-Iodoaniline, in the mixed aqueous solution of accelerine, after dripping off, at room temperature react 3~5h; In the solution of backward gained, drip is that the aqueous sodium hydroxide solution of 5~8 times of molar weights of 4-Iodoaniline neutralizes, reaction product is washed to vacuum-drying at 60~80 ℃ after neutrality, use again organic solvent recrystallization, obtain iodo-4 '-(N, the N-dimethyl amine) nitrogen benzide of 4-.
The organic solvent using in recrystallization process can be methyl alcohol, ethanol or toluene.
The building-up reactions formula of iodo-4 '-(N, N-dimethyl amine) the nitrogen benzide monomer of 4-of the present invention is as follows:
Iodo-4 '-(the N of described boracic acid esters polyaryletherketone and 4-, N-dimethyl amine) nitrogen benzide monomer carries out palladium catalysed cross coupling reaction preparation containing azo polyaryletherketone material, by boric acid ester polyaryletherketone and be the iodo-4 '-(N of 4-of its 1~2 times of molar weight, N-dimethyl amine) nitrogen benzide is put into reaction vessel, adding is four triphenylphosphine palladiums of boric acid ester polyaryletherketone molar weight 1%~3% again, the salt of wormwood of 1~5 times of molar weight of boric acid ester polyaryletherketone, then vacuumize and be filled with high pure nitrogen, 3~5 times repeatedly, inject organic solvent dissolution, finally, slowly inject the distilled water of organic solvent volume 3%~10%, sealing, in oil bath, 60~80 ℃ are reacted 10~20 hours, revolve to steam and remove organic solvent, with acetone extracting 20~30h, with organic solvent dissolution, adopt tlc silica gel to filter, revolve to steam and remove organic solvent, acetone is washed 4~6 times, filters, and dries, and obtains containing azo polyaryletherketone material.
Boracic acid esters polyaryletherketone and 4-be iodo-4 ' and-organic solvent that (N, N-dimethyl amine) nitrogen benzide monomer is used while carrying out linked reaction can be chloroform, tetrahydrofuran (THF) or dioxane.
It can be trichloromethane, tetrahydrofuran (THF) or dioxane that tlc silica gel filters the solvent using.
It is as follows containing the reaction formula of azo polyaryletherketone material that iodo-4 '-(N, N-dimethyl amine) the nitrogen benzide monomer of described boracic acid esters bisphenol A type polyaromatic ether ketone and 4-carries out palladium catalysed cross coupling reaction preparation:
P=12~20 wherein.
First the azo poly aryl ether ketone polymer that contains of the present invention is successfully incorporated into boric acid ester on polyaryletherketone main chain and obtains by a kind of boronation reaction, then utilize the iodo-4 '-(N of this boracic acid esters polyaryletherketone and 4-, N-dimethyl amine) nitrogen benzide obtains by palladium catalysed cross coupling reaction, this method can not affect the molecular weight of polymkeric substance, the biphenyl type azo polyaryletherketone obtaining has stability preferably, has potential application improving aspect the storage stability of material.
Accompanying drawing explanation
Fig. 1: bisphenol A type polyaromatic ether ketone 1H-NMR spectrogram of the present invention;
Fig. 2: boracic acid esters bisphenol A type polyaromatic ether ketone 1H-NMR spectrogram of the present invention;
Fig. 3: iodo-4 '-(N, N-dimethyl amine) the nitrogen benzide monomer 1H-NMR spectrogram of 4-of the present invention;
Fig. 4: of the present invention containing azo bisphenol A type polyaromatic ether ketone 1H-NMR spectrogram;
Fig. 5: the DSC curve of bisphenol A type polyaromatic ether ketone of the present invention;
Fig. 6: the DSC curve of boracic acid esters bisphenol A type polyaromatic ether ketone of the present invention;
Fig. 7: the DSC curve containing azo bisphenol A type polyaromatic ether ketone of the present invention;
Fig. 8: the UV-Vis curve containing azo bisphenol A type polyaromatic ether ketone of the present invention;
Fig. 9: the TGA curve containing azo bisphenol A type polyaromatic ether ketone of the present invention.
What Fig. 1 provided is the hydrogen nuclear magnetic spectrogram of bisphenol A type polyaromatic ether ketone of the present invention (embodiment 1), and each hydrogen in polymer architecture has correct ownership as we can see from the figure.
What Fig. 2 provided is the hydrogen nuclear magnetic spectrogram of boracic acid esters bisphenol A type polyaromatic ether ketone of the present invention (embodiment 2), and each hydrogen in polymer architecture has correct ownership as we can see from the figure.
What Fig. 3 provided is the hydrogen nuclear magnetic spectrogram of iodo-4 '-(N, N-dimethyl amine) the nitrogen benzide monomer (embodiment 3) of 4-of the present invention, and each hydrogen in polymer architecture has correct ownership as we can see from the figure.
What Fig. 4 provided is the hydrogen nuclear magnetic spectrogram containing azo bisphenol A type polyaromatic ether ketone (embodiment 4) of the present invention, and each hydrogen in polymer architecture has correct ownership as we can see from the figure.
What Fig. 5 provided is the DSC curve of bisphenol A type polyaromatic ether ketone of the present invention (embodiment 1), and the Tg of bisphenol A type polyaromatic ether ketone is respectively 159 degrees Celsius as we can see from the figure.
What Fig. 6 provided is the DSC curve of boracic acid esters bisphenol A type polyaromatic ether ketone of the present invention (embodiment 2), and Tg of the present invention is respectively 167 degrees Celsius as we can see from the figure.
What Fig. 7 provided is the DSC curve containing azo bisphenol A type polyaromatic ether ketone (embodiment 4) of the present invention, and Tg of the present invention is respectively 171 degrees Celsius as we can see from the figure.
What Fig. 8 provided is the UV-Vis curve containing azo bisphenol A type polyaromatic ether ketone (embodiment 4) of the present invention; Containing azo bisphenol A type polyaromatic ether ketone, in 426 nanometers, there is obvious uv-absorbing as we can see from the figure.
Fig. 9: the TGA curve containing azo bisphenol A type polyaromatic ether ketone (embodiment 4) of the present invention.As can be seen from the figure polymkeric substance has good thermostability.
Embodiment
Embodiment 1
By 13.6974g dihydroxyphenyl propane monomer, 13.0920g4,4 '-difluoro benzophenone monomer and 9.1205g Anhydrous potassium carbonate, 107mL tetramethylene sulfone, 36mL toluene, puts into the there-necked flask that nitrogen through hole, mechanical stirring and water-taker are housed, logical nitrogen, start stirring, be warming up to 130 ℃ and reflux to azeotropy dehydrant, react 2 hours, get rid of azeotropy dehydrant, be warmed up to 175 ℃ and continue reaction 8 hours; The polymers soln obtaining is separated out in deionized water, through pulverizing, washing, dry, obtain bisphenol A type polyaromatic ether ketone polymkeric substance.
Molecular formula is as follows:
M=15~25 wherein.
Embodiment 2
First there-necked flask is burned with gaslight under the condition vacuumizing, after cooling, pour nitrogen, put into magnetic stirring, add 4.0748g(10mmol) bisphenol A type polyaromatic ether ketone and 2.0316g(8mmol) connection pinacol borate, then add 0.0806g[IrCl (COD)]
2and 0.0644g4,4'-di-t-butyl-2,2'-dipyridyl, vacuumizes and is filled with high pure nitrogen, and 3 times repeatedly, inject 50mL tetrahydrofuran (THF) and dissolve, sealing, in oil bath, 80 ℃ are reacted 12 hours; Cooling rear with chloroform dissolving, use chloroform give solvent to adopt tlc silica gel (200~400 order) to filter, revolve to steam and remove tetrahydrofuran (THF), acetone is washed 5 times, and oven dry, obtains faint yellow block boracic acid esters bisphenol A type polyaromatic ether ketone polymkeric substance.
Molecular formula is as follows:
N=15~25 wherein.
Embodiment 3
Take 21.9g (0.1mol) 4-Iodoaniline and put into 250 ml beakers, add 50mL water, mechanical stirring becomes pasty state, dropwise splashes into 33.6mL concentrated hydrochloric acid (12mol/L).Drip off rear continuation reaction 1.5h, be cooled to-5 ℃.6.9g Sodium Nitrite is dissolved in 50mL water, in the time of-5 ℃, this solution is splashed in the above-mentioned 4-Iodoaniline hydrochloride aqueous solution.After filtration, be dropwise added drop-wise to and contain 16.4g sodium acetate, in the 200mL aqueous solution of 12.1g DMA, solution temperature is controlled at-5 ℃.After dripping off, at room temperature react 3~5h.To dripping 24g aqueous sodium hydroxide solution in the solution of gained, neutralize.Be washed to 60 ℃ of vacuum-dryings in vacuum drying oven after neutrality.With ethanol, carry out recrystallization, obtain iodo-4 '-(N, N-dimethyl amine) the nitrogen benzide monomer of the pulverous 4-of safran.
Molecular formula is as follows:
Embodiment 4
First there-necked flask is burned with gaslight under the condition vacuumizing, poured nitrogen after cooling, put into magnetic stirring, the bisphenol A type polyaromatic ether ketone and the iodo-4 '-(N of 0.2897g4-that add 1.1140g boracic acid esters, N-dimethyl amine) nitrogen benzide, then add 0.0806g tetra-triphenylphosphine palladiums and 0.3420g salt of wormwood, then vacuumize and be filled with high pure nitrogen, 3 times repeatedly, inject 50mL tetrahydrofuran (THF) and dissolve, last, slowly inject 5mL distilled water, sealing, 80 ℃ of reaction 12h in oil bath; Revolve and steam except desolventizing, with acetone extracting 24h, with chloroform, dissolve, adopt tlc silica gel to filter, revolve and steam except desolventizing, acetone is washed 5 times, filters, and dries, and obtains red blocks of solid.
Molecular formula is as follows:
P=12~20 wherein.
Embodiment 5
The molecular weight test of polymer with bis phenol A aryl ether ketone, boracic acid esters polymer with bis phenol A aryl ether ketone and azo polymer with bis phenol A aryl ether ketone.
Test condition:
Use instrument Shimadzu Prominence gpc analysis system;
40 ℃ of column temperatures, tetrahydrofuran (THF) is moving phase, polystyrene is standard specimen.
Bisphenol A type polyaromatic ether ketone, boracic acid esters bisphenol A type polyaromatic ether ketone, containing the molecular weight of azo bisphenol A type polyaromatic ether ketone, list in table 1.
Table 1: the molecular weight of bisphenol A-type polymkeric substance
Polymkeric substance |
Number-average molecular weight |
Specific dispersivity |
Polymer with bis phenol A aryl ether ketone |
7.9×10
4 |
1.44 |
Boracic acid esters bisphenol A type polyaromatic ether ketone |
8.4×10
4 |
1.35 |
Containing azo bisphenol A type polyaromatic ether ketone |
8.1×10
4 |
1.45 |