CN106750193A - Even tripyrrole and pyrroledione polymer and its synthetic method and application - Google Patents

Even tripyrrole and pyrroledione polymer and its synthetic method and application Download PDF

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CN106750193A
CN106750193A CN201611138353.3A CN201611138353A CN106750193A CN 106750193 A CN106750193 A CN 106750193A CN 201611138353 A CN201611138353 A CN 201611138353A CN 106750193 A CN106750193 A CN 106750193A
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polymer
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field effect
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刘云圻
杨杰
王翰林
姜莹莹
陈金佯
郭云龙
王帅
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Institute of Chemistry CAS
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Abstract

The invention discloses one kind even tripyrrole and pyrroledione polymer and its synthetic method and application.The structure of the polymer as shown in formula I, wherein, R is C1~C60Straight or branched alkyl.Present invention also offers the preparation method of polymer shown in Formulas I.Raw material of the invention is commercially produced product;Synthetic route is simple;Yield is high.Hole mobility with the even organic field effect tube that tripyrrole and pyrroledione polymer are prepared as organic semiconductor layer of the invention is up to 1.12cm2V‑1s‑1, electron mobility is up to 1.27cm2V‑1s‑1, there is good application prospect in organic field effect tube device.

Description

Even tripyrrole and pyrroledione polymer and its synthetic method and application
Technical field
The invention belongs to Material Field, be related to a kind of even tripyrrole and pyrroledione polymer and its synthetic method with should With.
Background technology
Organic field effect tube (Organic field-effect transistors, abbreviation OFETs) is a kind of electricity Pressure controller part, it regulates and controls source-electric leakage interpolar size of current by grid voltage, and organic semiconductor active layer is the core of the device Center portion point.Its semiconductor layer can select organic conjugate small molecule and conjugated polymer.With inorganic field effect transistor (semiconductor Layer is inorganic matter, such as monocrystalline silicon) to compare, organic field effect tube has device preparation technology simple, can large area solwution method Printing processing, the advantages of flexible device can be prepared.Therefore, organic field effect tube receives the extensive concern of people, by the phase Prestige can be applied to various display devices and memory aspect, such as electronic trademark, sensor, memory, large-scale integrated Circuit and Active Matrix Display etc..Organic field effect tube is expected to take as the essential elements device of organic photoelectric circuit For traditional inorganic field effect transistor device, brand-new business opportunities will be brought.
The semiconductor layer material played a crucial role in OFETs devices can be divided into p-type, N-shaped by its carrier transmission characteristics With bipolar semiconductor material, its carrier is respectively hole, electronics, hole and electronics.Current research shows there are three individualities The polymeric material of system shows excellent OFETs performances, and they are respectively pyrrolo-pyrrole-dione (diketopyrrolopyrrole, abbreviation DPP), isoindigo green grass or young crops (Isoindigo, abbreviation IID) and naphthalimide (Naphthalenedicarboximide, abbreviation NDI).In this three classes material, NDI classes material typically shows N-shaped performance, And DPP and IID classes material typically shows p-type performance, this three classes material can show bipolarity performance in a few cases. {X.Guo.;A.Facchetti.;T.J.Marks.Chem.Rev.2014,114,8943 } because bipolar materials are in CMOS There is important purposes in (complementary metal-oxide-semiconductor) device, therefore synthesize new bipolar Property material is extremely urgent.For DPP class materials, because the electron-withdrawing power of DPP cores is not strong, the lumo energy of its polymer compared with Height, is unfavorable for electron injection and the transmission of transport layer, therefore such polymer is usually p-type material.
The content of the invention
It is an object of the invention to provide one kind even tripyrrole and pyrroledione polymer and its synthetic method and application.
Company's tripyrrole and pyrroledione polymer that the present invention is provided, namely 3DPP birds of the same feather flock together compound, its general structure such as Formulas I It is shown:
In the Formulas I, R is that the total number of carbon atoms is the straight or branched alkyl of 1-60, and concretely the total number of carbon atoms is 1- 30th, the straight or branched alkyl of 10-30 or 20-30, more specifically can be 2- decyl myristyls, namely-CH2-CH(C10H21) C12H25
Ar groups are selected from any one in following group:
In the Ar groups,Represent substitution position;
N is 5-100, specifically, n is 8 or 11.
Polymer shown in the Formulas I is specially polymer P 3DPP-BT and P3DPP-TT;
Wherein, the P3DPP-BT structural formulas of the polymer are as follows:
The P3DPP-TT structural formulas of the polymer are as follows:
The method of polymer, comprises the following steps shown in the formula I that the present invention is provided:
Compound shown in Formula V (3DPP-2Br) is polymerized with double methyl tin compounds under catalyst and part effect Reaction, obtains polymer shown in the Formulas I;
The definition of R is identical with the definition of R in previously described formula I.
In the above method, double methyl tin compounds are selected from any one in following compound:
(i.e. 5,5 '-bis- (tin trimethyls) -2,2 '-di- thiophene),
(i.e. double (tin trimethyl) thieno [3,2-b] thiophene of 2,5-)
The catalyst is selected from tetrakis triphenylphosphine palladium, two (triphenylphosphine) palladium chlorides and three (dibenzalacetones) two At least one in palladium;
The part is selected from least one in triphenylphosphine, three (o-tolyl) phosphines and triphenylarsine.
The molfraction that feeds intake of compound (3DPP-2Br) shown in the Formula V is for 1.00 parts;
The described pair of molfraction that feeds intake of methyl tin compound is for 0.95~1.05 part;
The molfraction that feeds intake of the catalyst is for 0.01~0.10 part;
The molfraction that feeds intake of the part is for 0.08~0.80 part;
The mole dosage that feeds intake of compound (3DPP-2Br) shown in the Formula V, double methyl tin compounds, catalyst and part Than being specially 1.0:1.0:0.04:0.32;
In the polymerization procedure, temperature be 90~140, DEG C be specially 120 DEG C;
Polymerization time is 2 hours~80 hours;
The solvent of the polymerisation is chosen in particular from least one in toluene, chlorobenzene and dimethylbenzene.
Methods described may also include following purification step:
After the polymerisation is finished, concentrated hydrochloric acid and methyl alcohol are sequentially added after gained reaction system is cooled down, at room temperature Agitation and filtration, gained precipitation is extracted with methyl alcohol, acetone, n-hexane successively with apparatus,Soxhlet's, and extracting is removed small to after colourless Molecule and catalyst, then extracted with chloroform and obtained;Wherein, the volume ratio of methyl alcohol and hydrochloric acid concretely 20:1, hydrochloric acid Concentration concretely 12M.
Additionally, compound shown in initiation material Formula V described above falls within protection scope of the present invention.
The definition of R is identical with the definition of R in Formulas I.
Compound shown in above-mentioned Formula V can in accordance with the following steps prepare gained:
1) excessive 2,5- dialkyl group -3,6- two (thienyl) pyrrolo- [3,4-c] pyrroles -1,4- diketone and N- bromo fourths Imidodicarbonic diamide reacts in chloroform soln, obtains 3- (5- bromothiophene -2- bases) -2, the 5- dialkyl group -6- (thiophenes shown in Formula II Fen -2- bases) pyrrolo- [3,4-c] pyrroles's -1,4- diketone;
The definition of R is identical with the definition of R in Formulas I.
2) 2,5- dialkyl group -3,6- two (thienyl) pyrrolo- [3,4-c] pyrroles -1,4- diketone and excessive diisopropyl Lithium amide and trimethyltin chloride react in tetrahydrofuran solution, obtain 2,5- dialkyl group -3 shown in the formula III, (5- of 6- bis- (trimethyl-tin-radical) thienyl) pyrrolo- [3,4-c] pyrroles's -1,4- diketone;
The definition of R is identical with the definition of R in Formulas I.
3) by step 1) gained Formula II shown in 3- (5- bromothiophene -2- bases) -2,5- dialkyl group -6- (thiophene -2- bases) pyrrole Cough up simultaneously [3,4-c] pyrroles -1,4- diketone and step 2) gained formula III shown in (5- (the tin trimethyls of 2,5- dialkyl group -3,6- two Base) thienyl) pyrrolo- [3,4-c] pyrroles-Isosorbide-5-Nitrae-diketone carries out coupling reaction under tetrakis triphenylphosphine palladium catalytic action, obtains To connecting tripyrrole and pyrroledione (i.e. 3DPP) shown in formula IV;
The definition of R is identical with the definition of R in Formulas I.
4) by step 3) connect tripyrrole and pyrroledione (i.e. 3DPP) shown in gained formula IV and exist with N- bromo-succinimides Reacted in chloroform soln, obtain the dibromo shown in Formula V and connect tripyrrole and pyrroledione (i.e. 3DPP-2Br).
Above method step 1) in, 2,5- dialkyl group -3,6- bis- (thienyl) pyrrolo- [3,4-c] pyrroles-Isosorbide-5-Nitrae - Diketone is 1.5 with the mole dosage ratio that feeds intake of N- bromo-succinimides:1.0~1.5, preferably 1.5:1;In reactions steps, temperature It is -10~25 DEG C to spend, and the time is 2~24 hours;
Above-mentioned steps 2) in, 2,5- dialkyl group -3,6- bis- (thienyl) pyrrolo- [3,4-c] pyrroles-Isosorbide-5-Nitrae-diketone Mole dosage ratio is fed intake for 1 with lithium diisopropylamine and trimethyltin chloride:2.0~3.0:2.0~4.0, preferably 1:2.5: 3;In reactions steps, temperature is -80~0 DEG C, and the time is 1~24 hour;
Above-mentioned steps 3) in, 3- (5- bromothiophene -2- bases) -2,5- dialkyl group -6- (thiophene -2- bases) pyrrolo- [3, 4-c] pyrroles -1,4- diketone, 2,5- dialkyl group -3,6- two (5- (trimethyl-tin-radical) thienyl) pyrrolo- [3,4-c] pyrroles -1, The mole dosage ratio that feeds intake of 4- diketone and tetrakis triphenylphosphine palladium is 1:2.0~4.0:0.01~0.2, preferably 1:2.5:0.1;Instead Answer in step, temperature is 80~140 DEG C, the time is 2~48 hours;
Above-mentioned steps 4) in, simultaneously pyrroledione (i.e. 3DPP) rubs the even tripyrrole with feeding intake for N- bromo-succinimides Your amount ratio is 1:2.0~2.5, preferably 1:2.2;In reactions steps, temperature is -10~25 DEG C, and the time is 2~24 hours;
Above-mentioned steps 1) to step 4) reaction carries out in organic solvent.The step 1) in, the solvent tool Body can be chloroform;The step 2) in, the solvent concretely tetrahydrofuran;The step 3) in, the solvent tool Body may be selected from least one in toluene, chlorobenzene and dimethylbenzene;The step 4) in, the solvent concretely chloroform.
The synthetic route of the above method is as shown in Figure 5.
Application of the compound in organic field effect tube is prepared shown in the Formulas I that the invention described above is provided and containing described The organic field effect tube of polymer shown in Formulas I, falls within protection scope of the present invention.The organic field effect tube In, the material for constituting semiconductor layer is polymer shown in any Formulas I of claim 1 or 2.
The advantage of the invention is that:
1st, raw material is commercially produced product, and synthetic route is simple, and yield is high, can also be generalized to various straight or branched 3DPP Birds of the same feather flock together the synthesis of compound;
2nd, 3DPP birds of the same feather flock together compound symmetry and flatness it is all fine, birdsed of the same feather flock together compound compared to DPP, 3DPP birdss of the same feather flock together compound electrophilic Ability is stronger, with lower lumo energy, is conducive to the injection and transmission of semiconductor layer electronics, can be used for bipolarity field-effect In transistor;
3rd, 3DPP compounds of birdsing of the same feather flock together have suitable energy level and band gap, can be used in the photoelectric devices such as organic solar batteries;
4. mobility higher is had with 3DPP of the present invention organic field effect tubes that compound prepared as semiconductor layer of birdsing of the same feather flock together (μ) (hole mobility is up to 1.12cm2V-1s-1;Electron mobility is up to 1.27cm2V-1s-1), in bipolarity OFETs There is good application prospect.
Brief description of the drawings
Fig. 1 is the company's tripyrrole provided with the present invention and the ultraviolet-visible absorption spectroscopy figure of pyrroledione polymer.
Fig. 2 is the company's tripyrrole provided with the present invention and the cyclic voltammetry curve figure of pyrroledione polymer.
Fig. 3 is the company's tripyrrole provided with the present invention and the structural representation of pyrroledione polymer field effect transistor.
Fig. 4 is brilliant for the polymer field-effect of the company's tripyrrole and pyrroledione polymer as semiconductor layer that are provided with the present invention The output characteristic curve figure and transfer characteristic curve figure (P3DPP-BT and P3DPP-TT) of body pipe.
The synthetic route of compound shown in the formula I that Fig. 5 is provided for the present invention.
Specific embodiment
With reference to specific embodiment, the present invention is further elaborated, but the present invention is not limited to following examples.Institute State method and be conventional method unless otherwise instructed.The raw material can be obtained from open commercial sources unless otherwise instructed.
Embodiment 1, polymer P 3DPP-BT
1) 3- (5- bromothiophene -2- bases) -2,5- two (2- decyls myristyl) -6- (thiophene -2- bases) pyrrolo- [3,4-c] Pyrroles's -1,4- diketone
N- bromo-succinimides (0.64g, 3.59mmol) are dividedly in some parts (the 2- decyls 14 of 2,5- bis- under ice bath Alkyl) -3,6- two (thienyl) pyrrolo- [3,4-c] pyrroles -1,4- diketone (5.25g, 5.39mmol) chloroform In (30mL) solution, after stirring 20min, ice bath is removed, 6h is reacted at room temperature.Extracted with water and dichloromethane, dried.Solution revolves Post is crossed after dry, and (eluant, eluent is petroleum ether:Dichloromethane=8:1) red solid 2.6g, is obtained.Yield:68.9%.
Structural characterization data are as follows:
Mass spectrum:HR-MALDI-TOF:[M+Na]+calcd for C62H103BrN2NaO2S2:1073.654234,found: 1073.654192.
Nucleus magnetic hydrogen spectrum and carbon are composed:1H NMR(400MHz,CDCl3) δ 8.88 (d, J=4.0Hz, 1H), 8.61 (d, J= 4.0Hz, 1H), 7.63 (d, J=4.0Hz, 1H), 7.28 (m, 1H), 7.21 (d, J=4.0Hz, 1H), 4.05-3.90 (dd, J1 =7.8Hz, J2=7.8Hz, 4H), 1.88 (br, 2H), 1.44-1.05 (m, 80H), 0.88 (m, 12H)13C NMR(100MHz, CDCl3)δ161.84,161.67,141.08,140.10,135.71,135.26,131.54,131.44,130.99,129.94, 118.92,108.48,107.41,46.46,37.96,37.92,32.13,31.35,30.21,29.91,29.89,29.87, 29.85,29.76,29.58,26.38,22.91,14.34.
2) 2,5- bis- (2- decyls myristyl) -3,6- two (5- (trimethyl-tin-radical) thienyl) pyrrolo- [3,4-c] pyrrole Cough up -1,4- diketone
By 2,5- bis- (2- decyls myristyl) -3,6- two (thienyl) pyrrolo- [3,4-c] pyrroles's -1,4- diketone (1.0g, 1.027mmol) is dissolved in anhydrous THF (20mL), is cooled to -20 DEG C, and lithium diisopropylamine solution is dropwise added dropwise (2M, 1.28mL, 2.57mmol), reaction 30min after, add trimethyltin chloride tetrahydrofuran solution (1M, 3.08mL, 3.08mmol), 8h is reacted.Water quenching is added dropwise to go out reaction, dichloromethane is extracted, saturation potassium fluoride solution washes away excessive trimethyl ammonia chloride Tin.Organic phase anhydrous sodium sulfate drying, is spin-dried for.Product dichloromethane and acetone mixture freezing and crystallizing.After freeze overnight, Filter to obtain solid 0.62g.Yield:46.5%.
Structural characterization data are as follows:
Mass spectrum:HR-MALDI-TOF:[M+H]+calcd for C68H121N2O2S2Sn2:1299.690936,found: 1299.692355.
Nucleus magnetic hydrogen spectrum and carbon are composed:1H NMR(400MHz,CDCl3) δ 8.97 (d, J=3.6Hz, 2H), 7.31 (d, J= 3.6Hz, 2H), 4.03 (d, J=7.5Hz, 4H), 1.90 (m, 2H), 1.24 (m, 80H), 0.87 (t, 12H), 0.44 (s, 18H) .13C NMR(100MHz,CDCl3)δ162.06,146.48,140.10,136.41,136.12,135.83,107.65,46.44, 38.40,32.41,31.84,30.52,30.43,30.12,30.07,29.82,26.85,23.15,14.36,-7.96.
3) tripyrrole and pyrroledione (i.e. 3DPP) are connected
To in bis- mouthfuls of bottles of 100mL add 3- (5- bromothiophene -2- bases) -2,5- two (2- decyls myristyl) -6- (thiophene - 2- yls) pyrrolo- [3,4-c] pyrroles-Isosorbide-5-Nitrae-diketone (1.01g, 0.962mmol), 2,5- bis- (2- decyls myristyls) -3,6- Two (5- (trimethyl-tin-radical) thienyl) pyrrolo- [3,4-c] pyrroles-Isosorbide-5-Nitrae-diketone (0.50g, 0.385mmol), four (triphenyls Phosphine) palladium (44.5mg, 0.0385mmol), leads to argon gas protection.The toluene that 20mL ultrasounds are crossed is subsequently added into, mixed liquor is under 110 degree Reaction 24h.Room temperature is cooled to, water and dichloromethane extraction is added, dried.Solution crosses post after being spin-dried for, and (eluant, eluent is petroleum ether:Two Chloromethanes=1:1) blue solid 0.59g, is obtained.Yield:52.8%.
Structural characterization data are as follows:
Mass spectrum:HR-MALDI-TOF:[M+Na]+calcd forC186H308N6NaO6S6:2939.226981,found: 2939.224302。
Nucleus magnetic hydrogen spectrum and carbon are composed:1H NMR(400MHz,CD2Cl2) δ 9.03 (d, 2H), 8.96 (d, J=4.2Hz, 2H), 8.89 (d, 2H), 7.59 (d, J=4.2Hz, 2H), 7.36 (d, J=3.9Hz, 4H), 7.22 (t, 2H), 3.99 (d, J= 7.5Hz,12H),1.94(m,6H),1.30–1.18(m,240H),0.86(m,36H).13C NMR(100MHz,CDCl3)δ 160.54,160.52,160.43,140.16,139.80,139.46,138.11,138.02,135.96,135.63,134.51, 129.63,128.82,128.80,128.65,127.41,124.90,108.11,107.87,107.19,45.43,45.35, 37.08,36.79,30.92,30.30,30.24,29.11,29.04,28.70,28.66,28.64,28.57,28.37, 25.32,25.25,21.84,21.68,21.50,13.08,12.90.
4) dibromo connects tripyrrole and pyrroledione (i.e. 3DPP-2Br)
By N- bromo-succinimides (67.1mg, the 0.377mmol) company's of being dividedly in some parts tripyrrole and pyrroles under ice bath In chloroform (10mL) solution of diketone (i.e. 3DPP) (0.50g, 0.17mmol), after stirring 20min, ice bath, room temperature are removed Lower reaction 6h.Water and dichloromethane extraction are added, is dried.Solution crosses post after being spin-dried for, and (eluant, eluent is petroleum ether:Dichloromethane=1: 1) blue solid 0.32g, is obtained.Yield:61.3%.
Structural characterization data are as follows:
Mass spectrum:HR-MALDI-TOF:[M+Na]+calcd for C124H204Br2N4NaO4S4:3096.042603,found: 3096.045214。
Nucleus magnetic hydrogen spectrum and carbon are composed:1H NMR(400MHz,CDCl3) δ 8.94 (m, 4H), 8.63 (d, J=4.0Hz, 2H), 7.39 (d, J=4.0Hz, 4H), 7.19 (d, J=4.0Hz, 2H), 4.01 (m, 12H), 1.91 (m, 6H), 1.28-1.00 (m, 240H),0.85(m,36H).13C NMR(100MHz,CDCl3)δ160.99,160.91,141.38,138.88,138.67, 138.57,136.65,135.31,131.27,131.07,129.84,129.76,125.58,118.93,108.81,108.33, 108.02,53.29,46.35,37.95,37.87,37.72,31.92,31.32,30.12,30.07,29.70,29.64, 29.37,26.40,26.31,22.67,14.06.
5) polymer P 3DPP-BT
Dibromo is connected into tripyrrole and pyrroledione (i.e. 3DPP-2Br) (100.0mg, 0.0325mmol), 5,5 '-bis- (front threes Ji Xi) -2,2 '-di- thiophene (16.0mg, 0.0325mmol), the palladium of catalyst three (dibenzalacetone) two (1.2mg, 0.0013mmol), part three (o-tolyl) phosphine (3.17mg, 0.0104mmol) and chlorobenzene (3mL) are added in reaction bulb, The deoxygenation of three freezing-pumping-thaw cycles is carried out in argon gas, reactant mixture then is heated into 120 DEG C carries out polymerisation 72h.After cooling, add 5mL 12mol/L concentrated hydrochloric acids, 100mL methyl alcohol to stir 3h at room temperature, filter.The sediment for obtaining loads Apparatus,Soxhlet's is extracted.First extracted to colourless with methyl alcohol, acetone, n-hexane, remove small molecule and catalyst, then use chloroform Extracting obtains final product 84mg, yield 83.9%.
Structural characterization data are as follows:
Molecular weight:GPC:Mn=27.0kDa, PDI=2.65, n=8.
Elementary analysis:Anal.calcd for C194H310N6O6S8:C 75.68,H 10.22,N 2.73,found:C 75.74,H 10.25,N 2.68。
From the foregoing, it will be observed that the compound structure is correct, and it is compound P3DPP-BT shown in Formulas I, structural formula is as follows:
Embodiment 2, polymer P 3DPP-TT
Dibromo is connected into tripyrrole and the double (front threes of pyrroledione (i.e. 3DPP-2Br) (100.0mg, 0.0325mmol), 2,5- Ji Xi) thieno [3,2-b] thiophene (15.1mg, 0.0325mmol), the palladium of catalyst three (dibenzalacetone) two (1.2mg, 0.0013mmol), part three (o-tolyl) phosphine (3.17mg, 0.0104mmol) and chlorobenzene (3mL) are added in reaction bulb, The deoxygenation of three freezing-pumping-thaw cycles is carried out in argon gas, reactant mixture then is heated into 120 DEG C carries out polymerisation 72h.After cooling, add 5mL 12mol/L concentrated hydrochloric acids, 100mL methyl alcohol to stir 3h at room temperature, filter.The sediment for obtaining loads Apparatus,Soxhlet's is extracted.First extracted to colourless with methyl alcohol, acetone, n-hexane, remove small molecule and catalyst, then use chloroform Extracting obtains final product 88mg, yield 88.6%.
Structural characterization data are as follows:
Molecular weight:GPC:Mn=33.6kDa, PDI=2.45, n=11.
Elementary analysis:Anal.calcd for C192H308N6O6S8:C 75.53,H 10.17,N 2.75,found:C 75.54,H 10.20,N 2.68。
From the foregoing, it will be observed that the compound structure is correct, and it is compound P3DPP-TT shown in Formulas I, structural formula is as follows:
Embodiment 3, the spectrum property of polymer P 3DPP-BT and P3DPP-TT, chemical property and field-effect transistor Energy
1) spectrum and chemical property of polymer P 3DPP-BT and P3DPP-TT
Fig. 1 is ultraviolet-visible absorption spectroscopy of the two kinds of polymer in solution and film.
As shown in Figure 1, the optical band gap of polymer P 3DPP-BT and P3DPP-TT films is respectively 1.27eV and 1.26eV (optical band gap is according to formula Eg=1240/ λ is calculated, wherein EgIt is optical band gap, λ is the boundary value of ultraviolet absorption curve).By scheming 1 understands, the polymer all has stronger Intramolecular electron transfer peak, shows that the polymer molecule intermolecular forces are stronger.
Fig. 2 is the cyclic voltammetry curve of two kinds of polymer film.Measure is carried out in CHI660c electrochemical workstations, with biography The three-electrode structure test of system, platinum is working electrode, and platinum filament is that, to electrode, silver/silver chlorate is reference electrode, tetrabutyl hexafluoro phosphorus Sour ammonium is used as supporting electrolyte.Test is carried out in acetonitrile solution.The condition of cyclic voltammetric is:Sweep limits is -1.6~1.6 Volt (vs.Ag/AgCl), sweep speed is 50 millivolts per second.The polymer has oxidation peak and reduction peak, can be used as organic half Conductor material.According to cyclic voltammetry curve, the HOMO energy levels of polymer P 3DPP-BT and P3DPP-TT be respectively -5.45eV and - 5.44eV, lumo energy is respectively -3.51eV and -3.56eV.Polymer has suitable HOMO energy levels and lumo energy, thus It is bipolar materials.
2) field-effect transistor performance of polymer P 3DPP-BT and P3DPP-TT
Fig. 3 is the structural representation of organic field effect tube, as illustrated, it is 200 μm of poly- terephthaldehydes to use thickness Sour glycol ester piece is cleaned by ultrasonic after 80 DEG C of vacuum drying as substrate in secondary water, ethanol, acetone.Source-drain electrode is The 25nm of mask plate hot evaporation thick Jin Weiyuan, drain electrode.The polymer of the gained of embodiment 1 is semiconductor layer, is by its concentration Method in the o-dichlorobenzene solution of 8mg/ml by spin coating forms active layer in polyethylene terephthalate, and thickness is 20nm, and annealed 10 minutes in 160 DEG C of thermal station.
Then the polymeric film surface in the gained of 1~embodiment of embodiment 2 forms the poly- first of 900 nanometer thickness by spin coating Used as FET insulating barrier, 90 DEG C are removed solvent 60 minutes to base methyl acrylate;Pass through mask plate hot evaporation on the insulating layer 50nm thickness aluminium completes FET and prepares as gate electrode.
At room temperature prepared fieldtron is measured with by the SCS semi-conductor test instruments of Keithley 4200 Electric property.Determining two key parameters of the performance of OFET is:The mobility (μ) and the on-off ratio (I of device of carrieron/ Ioff).Mobility refers to that (unit is cm to the average drift velocity of carrier under unit electric field effect2V-1s-1), it is reflected Hole or electronics transfer ability in the semiconductors under the electric field.On-off ratio is defined as:Transistor is in "On" state and "Off" shape The ratio between electric current under state, it reflects the quality of devices switch performance.For a high performance field-effect transistor, its migration Rate and on-off ratio should be high as far as possible.
Fig. 4 is transfer characteristic curve and output characteristic curve based on the field-effect transistor prepared by two kinds of polymer. The polymer field effect transistor shows obvious bipolar transmission characteristic, the company's of explanation tripyrrole and pyrroledione polymer It is a class bipolar materials.
Carrier mobility can be calculated by equation:
IDS=(W/2L) Ciμ(VG–VT)2(saturation region)
Wherein, IDSIt is drain current, μ is carrier mobility, VGIt is grid voltage, VTIt is threshold voltage, W is that raceway groove is wide Degree, L is channel length, CiIt is insulation body capacitance.Utilize (IDS, sat)1/2To VGMapping, and make linear regression, can thus return The slope of line extrapolates carrier mobility (μ), and V is tried to achieve by the section of the tropic and X-axisT
Mobility can be calculated according to formula from the slope of transfer curve, the polymer prepared in above-mentioned each example effect Answer the device performance of transistor as shown in table 1.On-off ratio can be drawn by the ratio between maxima and minima of Fig. 4 sides source-drain current.
The device performance of table 1, polymer field effect transistor
Test result indicate that, the company's tripyrrole and pyrroledione polymer provided with the present invention are as prepared by organic semiconductor layer The hole mobility of organic field effect tube be up to 1.12cm2V-1s-1, electron mobility is up to 1.27cm2V-1s-1。 It can be seen that, the company's tripyrrole and pyrroledione polymer that the present invention is provided are the excellent new bipolar materials of a class.The present invention This material reported is not limited to, changing different side chain substituents can obtain a series of polymer, and the present invention The synthetic method for being given is simple, effective, and the bipolar materials for synthesizing new have very big directive significance.

Claims (10)

1. polymer shown in Formulas I:
In the Formulas I, R is that the total number of carbon atoms is the straight or branched alkyl of 1-60;
Ar groups are selected from any one in following group;
In the Ar groups,Represent substitution position;
N is 5-100.
2. polymer according to claim 1, it is characterised in that:R is that the total number of carbon atoms is the straight chain of 1-30 in the Formulas I Or branched alkyl or 2- decyl myristyls.
3. a kind of method for preparing polymer shown in any Formulas I of claim 1 or 2, comprises the following steps:
Compound shown in Formula V is carried out into polymerisation with double methyl tin compounds in the presence of catalyst and part, has been reacted Polymer shown in the Formulas I is obtained after;
In the Formula V, the definition of R is identical with the definition of R in Formulas I in claim 1.
4. method according to claim 3, it is characterised in that:Described pair of methyl tin compound is selected from following compound Any one:
The catalyst is selected from tetrakis triphenylphosphine palladium, two (triphenylphosphine) palladium chlorides and three (dibenzalacetone) two palladium At least one;
The part is selected from least one in triphenylphosphine, three (o-tolyl) phosphines and triphenylarsine.
5. the method according to claim 3 or 4, it is characterised in that:The molfraction that feeds intake of compound shown in the Formula V is 1.00 parts;
The described pair of molfraction that feeds intake of methyl tin compound is for 0.95~1.05 part;
The molfraction that feeds intake of the catalyst is for 0.01~0.10 part;
The molfraction that feeds intake of the part is for 0.08~0.80 part.
6. according to any described method in claim 3-5, it is characterised in that:In the polymerization procedure, temperature is 90 ~140 DEG C;Time is 2 hours~80 hours;
The polymerisation is carried out in a solvent;
The solvent of the polymerisation is chosen in particular from least one in toluene, chlorobenzene and dimethylbenzene.
7. application of the polymer in organic field effect tube is prepared shown in any Formulas I of claim 1 or 2.
8. the organic field effect tube of polymer shown in any Formulas I of claim 1 or 2 is contained.
9. it is according to claim 7 application or claim 8 described in organic field effect tube, it is characterised in that:Institute State in organic field effect tube, the material for constituting semiconductor layer is polymer shown in any Formulas I of claim 1 or 2.
10. compound shown in Formula V,
In the Formula V, the definition of R is identical with the definition of R in Formulas I described in claim 1.
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