CN102924518A - Carbazole-containing organic semiconductor material, preparation method and applications thereof - Google Patents
Carbazole-containing organic semiconductor material, preparation method and applications thereof Download PDFInfo
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Abstract
The present invention discloses a carbazole-containing organic semiconductor material, a preparation method and applications thereof. The carbazole-containing organic semiconductor material is a polymer represented by a molecule structure general formula (I), wherein R is alkoxy in the general formula (I). The carbazole-containing organic semiconductor material has characteristics of excellent bipolar transmission, high thermal stability, good solubility and good film forming property so as to expand an application range. Spectrum test results show that the maximum emission wavelength of the carbazole-containing organic semiconductor material is in a blue light range, and the carbazole-containing organic semiconductor material has a high triplet state energy level. According to the preparation method for the carbazole-containing organic semiconductor material, the carbazole-containing organic semiconductor material can be obtained only by controlling reaction conditions and the amount of reactants, a process is simple, the method is easy to operate and control, safety is high, product yield is high, production cost is reduced, and the method is suitable for industrial production.
Description
Technical field
The invention belongs to the photoelectric material technical field, relate to specifically a kind of organic semiconductor material that contains carbazole and its preparation method and application.
Background technology
Along with the development of information age, have efficient, energy-conservation, the organic EL display (OLEDs) of lightweight and the concern that the big area white-light illuminating more and more is subject to people.The OLED technology is paid close attention to by the scientist in the whole world, and relevant enterprise and laboratory are all in the research and development of carrying out this technology.As a kind of novel LED technology, have active illuminating, light, thin, good contrast, energy consumption organic electroluminescence device low, that can be made into the characteristics such as flexible device material has been proposed higher requirement.
1987, the Tang of U.S. Eastman Kodak company and VanSlyke reported the breakthrough in the organic electroluminescent research.And to realize the application purposes such as panchromatic demonstration and illumination, luminescent device must have certain efficient and life-span.Efficient, stable blue light electroluminescence, white light parts are fewer at present, and the efficient of especially high-octane blue light and life-span are all also lower.
When OLED making and real work, can be subject to the effect of heat, this moment is for the organic materials of some poor heat stability, other form that rete produces crystalline form or film change (such as glass transition) is lured in the effect that is vulnerable to these heat into, so will change organic materials physical properties originally, and then cause the phenomenons such as OLED brightness, efficient decline, changed by heat effect, material is easily aging, and must reduce its device lifetime of making.Therefore the material of main part of selecting to have high thermal stability is a very important factor to the life-span of boost device.
Summary of the invention
The object of the invention is to overcome the above-mentioned deficiency of prior art, a kind of bipolarity transmission and the high organic semiconductor material that contains carbazole of thermostability are provided.
Another object of the present invention is to provide that a kind of technique is simple, productive rate is high, safe, the organic semiconductor material preparation method who contains carbazole that is easy to operate and control.
Further aim of the present invention be to provide the above-mentioned organic semiconductor material that contains carbazole at organic electroluminescent device, organic solar batteries, organic field effect tube, organic optical memory, organic non-linear optical properties or/and the application in the organic laser.
In order to realize the foregoing invention purpose, the technical scheme of the embodiment of the invention is as follows:
A kind of organic semiconductor material that contains carbazole, its general formula of molecular structure are following (I):
(I) in the formula, R is alkoxyl group.
And the above-mentioned organic semiconductor material preparation method who contains carbazole comprises the steps:
Obtain the compd A that following structural formula represents, wherein, D is alkoxyl group,
A：
In the system of anhydrous, oxygen-free environment and organic solvent, under-70 ℃～-78 ℃ temperature, with compd A and n-Butyl Lithium hybrid reaction, add again diphenyl phosphine chloride first, be warming up to 20 ℃～25 ℃ and continue reaction down, obtain intermediate product;
With the dissolving of described intermediate product, and add oxygenant and react, obtain the organic semiconductor material that contains carbazole of following general structure (I) expression,
Further, the above-mentioned organic semiconductor material that contains carbazole is at the organic electroluminescent device, organic solar batteries, and organic field effect tube, organic optical memory, organic non-linear optical properties is or/and the application in the organic laser.
The above-mentioned organic semiconductor material that contains carbazole has good bipolarity transmission and the characteristic of high thermal stability.This its carbazole group unit that contains of organic semiconductor material that contains carbazole is the electron rich group, and the existence of this group has effectively improved this and contained the organic semiconductor material hole transport performance of carbazole; The diphenyl phosphine oxygen base that contains is the electron deficiency group, and this group effective improved the electronic transmission performance that this contains the organic semiconductor material of carbazole; This carbazolyl-containing single group unit and diphenyl phosphine oxygen groups unit are so that this organic semiconductor material that contains carbazole has higher electronics and hole mobility, be conducive to contain the transmission of current carrier in the device of this organic semiconductor material that contains carbazole, effectively utilize hole, electronics (exciton energy that they are compounded to form is transferred to object and radioluminescence) from electrode injection, obtain high luminous efficiency.This organic semiconductor material that contains carbazole contain 9,9-two (3 '-(N-phenyl carbazole base)) spiral shell is fluorene structured because its rigidity and large sterically hindered structure make this organic semiconductor material that contains carbazole have higher thermostability; The alkoxy grp that contains has improved this organic semiconductor material that contains carbazole and has also had good solubility and film-forming properties, thereby has expanded its range of application.Learn by spectrum test, this maximum emission wavelength of organic semiconductor material that contains carbazole at blue light range, have high triplet.
This organic semiconductor material preparation method who contains carbazole only need can obtain by the consumption of control reaction conditions and reactant, and technique is simple, is easy to operate and control, and is safe high with productive rate product, reduced production cost, is fit to suitability for industrialized production.
Description of drawings
Fig. 1 is the schematic flow sheet that the embodiment of the invention contains the organic semiconductor material preparation method of carbazole;
Fig. 2 is with the organic semiconductor material that contains carbazole of the embodiment 1 preparation structural representation as the organic electroluminescence device of making luminescent layer;
Fig. 3 is the fluorescence radiation spectrogram of organic electroluminescence device when voltage is 7V of Application Example 1 preparation;
Fig. 4 is with the organic semiconductor material that contains carbazole of the embodiment 2 preparation structural representation as the solar cell device of active coating;
Fig. 5 is with the organic semiconductor material that contains carbazole of the embodiment 3 preparation structural representation as the organic field effect tube device of organic semiconductor layer.
Embodiment
In order to make the technical problem to be solved in the present invention, technical scheme and beneficial effect clearer, below in conjunction with specific embodiments and the drawings, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
The embodiment of the invention provides a kind of bipolarity transmission and the high organic semiconductor material that contains carbazole of thermostability, and its general formula of molecular structure is following (I):
(I) in the formula, R is alkoxyl group.
Like this, the above-mentioned organic semiconductor material that contains carbazole has good bipolarity transmission and the characteristic of high thermal stability.This its carbazole group unit that contains of organic semiconductor material that contains carbazole is the electron rich group, and the existence of this group has effectively improved this and contained the organic semiconductor material hole transport performance of carbazole; The diphenyl phosphine oxygen base that contains is the electron deficiency group, and this group effective improved the electronic transmission performance that this contains the organic semiconductor material of carbazole; This carbazolyl-containing single group unit and diphenyl phosphine oxygen groups unit are so that this organic semiconductor material that contains carbazole has higher electronics and hole mobility, be conducive to contain the transmission of current carrier in the device of this organic semiconductor material that contains carbazole, effectively utilize hole, electronics (exciton energy that they are compounded to form is transferred to object and radioluminescence) from electrode injection, obtain high luminous efficiency.This organic semiconductor material that contains carbazole contain 9,9-two (3 '-(N-phenyl carbazole base)) spiral shell is fluorene structured because its rigidity and large sterically hindered structure make this organic semiconductor material that contains carbazole have higher thermostability; The alkoxy grp that contains has improved this organic semiconductor material that contains carbazole and has also had good solubility and film-forming properties, thereby has expanded its range of application.Learn by spectrum test, this maximum emission wavelength of organic semiconductor material that contains carbazole at blue light range, have high triplet.
Preferably, in above-mentioned (I) formula, it is C that alkoxyl group is preferably carbonatoms
1～C
8Alkoxyl group.Therefore, this preferred alkoxy base can further improve solvability, film forming properties, the thermal stability of the organic semiconductor material that contains carbazole.
The embodiment of the invention also provides the above-mentioned preparation method who contains the organic semiconductor material of carbazole, and the technical process of the method sees also Fig. 1.This organic semiconductor material preparation method who contains carbazole comprises the steps:
S1: obtain the compd A that following structural formula represents, wherein, R is alkoxyl group,
A：
S2: in the system of anhydrous, oxygen-free environment and organic solvent, under-70 ℃～-78 ℃ temperature, with this compd A and n-Butyl Lithium hybrid reaction, add again diphenyl phosphine chloride first, be warming up to 20 ℃～25 ℃ and continue reaction down, obtain intermediate product;
S3: with the dissolving of this intermediate product, and add oxygenant and react, obtain the organic semiconductor material that contains carbazole of following general structure (I) expression;
This chemical equation that contains the organic semiconductor material of carbazole can be expressed as follows:
Particularly, among the above-mentioned organic semiconductor material preparation method's who contains carbazole the step S1, the preferably obtain manner as follows of compd A:
S11: obtain compound 2,7-dibromo fluorenone and 9-(4-alkoxyl phenyl) azoles;
S12: under the condition of anaerobic and methylsulphonic acid existence, with this compound 2,7-dibromo fluorenone (5mmol) and 9-(4-alkoxyl phenyl) azoles (70mmol) mixes, under 140 ℃, carry out condensation reaction 6h, obtain the compd A of said structure general formula (I) expression, the chemical equation of this compd A can be expressed as follows:
In this step S12, after condensation reaction finishes, be cooled to room temperature, use again dichloromethane extraction, then use respectively saturated sodium bicarbonate solution and distilled water wash, concentrated organic layer obtains blue coarse product solid, then with this crude product behind the silica gel column chromatography separating-purifying, obtain solid product with acetone recrystallization at last.
Particularly, among the above-mentioned organic semiconductor material preparation method's who contains carbazole the step S2, the mol ratio of n-Butyl Lithium, compd A and diphenyl phosphine chloride three reactants is preferably 2: 1: 2～and 2.5: 1: 2.5.Add reactant according to this ratio, can guarantee that reactant fully reacts, thereby further improve the productive rate of product, reduce production costs.Wherein, preferred-78 ℃ of the temperature of compd A and n-Butyl Lithium reaction, the time of reaction is preferably 1～3 hour; Be preferably 3～12 hours 20 ℃～25 ℃ lower times of continuing reaction, react complete after, add the shrend termination reaction of going out.The temperature and time of this preferred coupled reaction can promote further that the chemical reaction forward in this step carries out, and further improves the speed of reaction and the yield of the organic semiconductor material that intermediate product contains carbazole, simultaneously, has shortened the reaction times, has reduced energy consumption.
Must react in anhydrous and oxygen-free environment among this step S2, this is because there is water can cause n-Butyl Lithium to be decomposed, so that should react unsuccessfully; Aerobic can cause reactant oxidized, and reaction failure or productive rate are greatly reduced.Oxygen-free environment can adopt vacuum or be full of rare gas element and realize, preferably is full of rare gas element and realizes oxygen-free environment, and this rare gas element is the art rare gas element commonly used, such as argon gas etc., can also be nitrogen, because the nitrogen cost is low, easily obtain, so preferred nitrogen.Wherein, in the reaction system of this step, organic solvent is preferably at least a in tetrahydrofuran (THF), benzene, hexanaphthene, the ether, more preferably tetrahydrofuran (THF), because under-78 ℃～-70 ℃ conditions, this tetrahydrofuran (THF) can better the solubilizing reaction thing, and guarantees the activity of reaction.
Further preferred, also comprise the processing step that the intermediate product that obtains is carried out separation and purification among this step S2, the processing step of this separation and purification is preferably but not only be: adopt first ethyl acetate extraction, concentrated also collected organic layer, use again the anhydrous magnesium sulfate drying organic layer, obtain thick intermediate product, then thick intermediate product being adopted sherwood oil/methylene dichloride to obtain white solid product as leacheate through the silica gel column chromatography separating-purifying is pure intermediate product.Simultaneously can be referring to step (3) among the embodiment 1.
Particularly, among the above-mentioned organic semiconductor material preparation method's who contains carbazole the step S3, the dissolving of intermediate product obtains the solution of intermediate product, this solvent preferably but not only be methylene dichloride, its concentration can be according to being to want flexible configuration.Oxygenant is preferably H
2O
2, when oxygenant is H
2O
2The time, this H
2O
2The addition mol ratio that is preferably itself and described intermediate product be 100: 1～160: 1, the time of oxidizing reaction is preferably 3～12 hours.Under the usefulness of oxygenant, so that containing in the organic semiconductor material molecule of carbazole, the embodiment of the invention forms ketone group.Certainly, this oxygenant not only is H
2O
2, also can substitute with other oxygenants of this area.
The above-mentioned organic semiconductor material preparation method who contains carbazole only need can obtain by the consumption of control reaction conditions and reactant, and technique is simple, is easy to operate and control, and is safe high with yield product, reduced production cost, is suitable for suitability for industrialized production.
The above-mentioned organic semiconductor material of carbazole that contains makes it have good bipolarity transmission, characteristic and the solubility property of high thermal stability owing to the molecular structure of self.The organic semiconductor material that contains carbazole just because of the embodiment of the invention has above-mentioned good performance, makes it can be at organic electroluminescent device, organic solar batteries, organic field effect tube, organic optical memory, organic non-linear optical properties or/and the application in the organic laser.
Now in conjunction with specific embodiments, the present invention is further elaborated.
Embodiment 1
The present embodiment contains the organic semiconductor material 2 of carbazole, 7-two (diphenyl phosphine oxygen base)-9,9-two (9-(4-p-methoxy-phenyl) carbazole-3-yl) fluorenes (DMOPCF) and preparation method thereof, the following I of its structural formula
1Shown in:
The preparation process of the above-mentioned organic semiconductor material that contains carbazole is as follows:
(1): obtaining compd A is 9; 9-two (9-(4-p-methoxy-phenyl) carbazole-3-yl)-2; 7-dibromo fluorenes: under argon shield; in the there-necked flask of 250mL; add respectively 2; 7-dibromo fluorenone 5mmol; 9-(4-p-methoxy-phenyl) carbazole 70mmol and methylsulphonic acid 5mmol; at 140 ℃ of lower stirring reaction 6h; stopped reaction also is cooled to room temperature, uses first dichloromethane extraction, more respectively with saturated sodium bicarbonate solution and distillation washing; then concentrated organic layer; obtain the blue solid crude product, then with crude product behind the silica gel column chromatography separating-purifying, obtaining solid product with acetone recrystallization is compd A.The productive rate 70% of compd A, its mass spectroscopy MALDI/TOF-MS:m/z:865 (M
+); The chemical equation of this compd A can be expressed as follows:
(compd A)
(2) 2,7-two (diphenylphosphine)-9, the preparation of 9-two (9-(4-p-methoxy-phenyl) carbazole-3-yl) fluorenes intermediate product: at anhydrous and oxygen-free, under-78 ℃ of temperature condition, n-Butyl Lithium 3.3mmol is added drop-wise to 9,9-two (9-(4-p-methoxy-phenyl) carbazole-3-yl)-2, in tetrahydrofuran (THF) (75mL) solution of 7-dibromo fluorenes 1.5mmol, at-78 ℃ of lower 3h that stir, again diphenyl phosphine chloride 3.3mmol is injected wherein rapidly by syringe, obtain transparent pale yellow solution, naturally after being warming up to 25 ℃ behind the stirring reaction 8h, with the 90mL shrend termination reaction of going out, generate 2,7-two (diphenylphosphine)-9,9-two (9-(4-p-methoxy-phenyl) carbazole-3-yl) fluorenes intermediate product, these are 2 years old, 7-two (diphenylphosphine)-9, the fluorene structured formula of 9-two (9-(4-p-methoxy-phenyl) carbazole-3-yl) is as follows:
(3) 2,7-two (diphenyl phosphine oxygen base)-9, the preparation of 9-two (9-(4-p-methoxy-phenyl) carbazole-3-yl) fluorenes (DMOPCF) will contain 2 in the above-mentioned steps (2), 7-two (diphenylphosphine)-9, the reaction mixture of 9-two (9-(4-p-methoxy-phenyl) carbazole-3-yl) fluorenes intermediate product adopts ethyl acetate extraction, concentrated organic layer, use again anhydrous magnesium sulfate drying, obtain thick intermediate product, adopt sherwood oil/methylene dichloride to obtain the intermediate product of pure white solid through the silica gel column chromatography separating-purifying as leacheate this crude product, then dissolve this pure intermediate product with the 60mL methylene dichloride, and add 30% hydrogen peroxide 4.6mL in the solution that contains intermediate product, under the room temperature behind the stirring reaction 12h, separate organic layer, then respectively with saturated aqueous common salt and distillation washing, revolve the steaming solvent, obtain the white solid crude product, adopt at last ethyl acetate/methanol to obtain pure solid product DMOPCF as leacheate through silica gel column chromatography separating-purifying crude product.This DMOPCF productive rate is 35%, and its mass spectroscopy is MALDI/TOF-MS:m/z:1110 (M
+).
This DMOPCF chemical equation can be expressed as follows:
The DMOPCF organic semiconductor material of the present embodiment 1 preparation is detected by thermogravimetric analyzer (TGA), analysis condition is nitrogen atmosphere, when sweep velocity is 10 ℃/min, the heat decomposition temperature that records the DMOPOF organic semiconductor material of preparation in the present embodiment 1 is 420 ℃, has illustrated that this DMOPOF organic semiconductor material thermal stability is high.
Embodiment 2
The present embodiment contains the organic semiconductor material 2 of carbazole, 7-two (diphenyl phosphine oxygen base)-9,9-two (9-(4-tert.-butoxy phenyl) carbazole-3-yl) fluorenes (DBOPCF) and preparation method thereof, the following I of its structural formula
2Shown in:
The preparation process of the above-mentioned organic semiconductor material that contains carbazole is as follows:
(1): obtaining compd A is 9; 9-two (9-(4-tert.-butoxy phenyl) carbazole-3-yl)-2; 7-dibromo fluorenes: under argon shield; in the there-necked flask of 250mL; add respectively 2; 7-dibromo fluorenone 5mmol; 9-(4-tert.-butoxy phenyl) carbazole 70mmol and methylsulphonic acid 5mmol; at 140 ℃ of lower stirring reaction 7h; stopped reaction also is cooled to room temperature, uses first dichloromethane extraction, more respectively with saturated sodium bicarbonate solution and distillation washing; then concentrated organic layer; obtain the blue solid crude product, then with crude product behind the silica gel column chromatography separating-purifying, obtaining solid product with acetone recrystallization is compd A.The productive rate 71% of compd A, its mass spectroscopy MALDI/TOF-MS:m/z:949 (M
+); The chemical equation of this compd A can be expressed as follows:
(compd A)
(2) 2,7-two (diphenylphosphine)-9, the preparation of 9-two (9-(4-tert.-butoxy phenyl) carbazole-3-yl) fluorenes intermediate product: at anhydrous and oxygen-free, under-70 ℃ of temperature condition, n-Butyl Lithium 3.0mmol is added drop-wise to 9,9-two (9-(4-tert.-butoxy phenyl) carbazole-3-yl)-2, in ether (75mL) solution of 7-dibromo fluorenes 1.5mmol, at-78 ℃ of lower 3h that stir, again diphenyl phosphine chloride 3.0mmol is injected wherein rapidly by syringe, obtain transparent pale yellow solution, naturally after being warming up to 20 ℃ behind the stirring reaction 4h, with the 90mL shrend termination reaction of going out, generate 2,7-two (diphenylphosphine)-9,9-two (9-(4-tert.-butoxy phenyl) carbazole-3-yl) fluorenes intermediate product, its structural formula is as follows:
(3) 2,7-two (diphenyl phosphine oxygen base)-9, the preparation of 9-two (9-(4-tert.-butoxy phenyl) carbazole-3-yl) fluorenes (DBOPCF) is adopted ethyl acetate extraction with the reaction mixture that contains intermediate product in the above-mentioned steps (2), concentrated organic layer, use again anhydrous magnesium sulfate drying, obtain thick intermediate product, adopt sherwood oil/methylene dichloride to obtain the intermediate product of pure white solid through the silica gel column chromatography separating-purifying as leacheate this crude product, then dissolve this pure intermediate product with the 60mL methylene dichloride, and add 30% hydrogen peroxide 7mL in the solution that contains intermediate product, under the room temperature behind the stirring reaction 7h, separate organic layer, then respectively with saturated aqueous common salt and distillation washing, revolve the steaming solvent, obtain the white solid crude product, adopt at last ethyl acetate/methanol to obtain pure solid product DBOPCF as leacheate through silica gel column chromatography separating-purifying crude product.This DBOPCF productive rate is 37%, and its mass spectroscopy is MALDI/TOF-MS:m/z:1193 (M
+).
This DBOPCF chemical equation can be expressed as follows:
The DBOPCF organic semiconductor material of the present embodiment 2 preparations is detected by thermogravimetric analyzer (TGA), analysis condition is nitrogen atmosphere, when sweep velocity is 10 ℃/min, the heat decomposition temperature that records the DBOPCF organic semiconductor material of preparation in the present embodiment 1 is 424 ℃, has illustrated that this DBOPCF organic semiconductor material thermal stability is high.
Embodiment 3
The present embodiment contains the organic semiconductor material 2 of carbazole, 7-two (diphenyl phosphine oxygen base)-9,9-two (9-(4-n-octyloxy phenyl) carbazole-3-yl) fluorenes (DOOPCF) and preparation method thereof, the following I of its structural formula
3Shown in:
(I
3)
The preparation process of the above-mentioned organic semiconductor material that contains carbazole is as follows:
(1): obtaining compd A is 9; 9-two (9-(4-n-octyloxy phenyl) carbazole-3-yl)-2; 7-dibromo fluorenes: under argon shield; in the there-necked flask of 250mL; add respectively 2; 7-dibromo fluorenone 5mmol; 9-(4-n-octyloxy phenyl) carbazole 70mmol and methylsulphonic acid 5mmol; at 140 ℃ of lower stirring reaction 6h; stopped reaction also is cooled to room temperature, uses first dichloromethane extraction, more respectively with saturated sodium bicarbonate solution and distillation washing; then concentrated organic layer; obtain the blue solid crude product, then with crude product behind the silica gel column chromatography separating-purifying, obtaining solid product with acetone recrystallization is compd A.The productive rate 75% of compd A, its mass spectroscopy MALDI/TOF-MS:m/z:1061 (M
+); The chemical equation of this compd A can be expressed as follows:
(compd A)
(2) 2,7-two (diphenylphosphine)-9, the preparation of 9-two (9-(4-n-octyloxy phenyl) carbazole-3-yl) fluorenes intermediate product: at anhydrous and oxygen-free, under-75 ℃ of temperature condition, n-Butyl Lithium 3.75mmol is added drop-wise to 9,9-two (9-(4-n-octyloxy phenyl) carbazole-3-yl)-2, in tetrahydrofuran (THF) (75mL) solution of 7-dibromo fluorenes 1.5mmol, at-78 ℃ of lower 3h that stir, again diphenyl phosphine chloride 3.75mmol is injected wherein rapidly by syringe, obtain transparent pale yellow solution, naturally after being warming up to 22 ℃ behind the stirring reaction 12h, with the 90mL shrend termination reaction of going out, generate 2,7-two (diphenylphosphine)-9,9-two (9-(4-n-octyloxy phenyl) carbazole-3-yl) fluorenes intermediate product, its structural formula is as follows:.
(3) 2,7-two (diphenyl phosphine oxygen base)-9, the preparation of 9-two (9-(4-n-octyloxy phenyl) carbazole-3-yl) fluorenes (DOOPCF) is adopted ethyl acetate extraction with the reaction mixture that contains intermediate product in the above-mentioned steps (2), concentrated organic layer, use again anhydrous magnesium sulfate drying, obtain thick intermediate product, adopt sherwood oil/methylene dichloride to obtain the intermediate product of pure white solid through the silica gel column chromatography separating-purifying as leacheate this crude product, then dissolve this pure intermediate product with the 60mL methylene dichloride, and add 30% hydrogen peroxide 7.4mL in the solution that contains intermediate product, under the room temperature behind the stirring reaction 3h, separate organic layer, then respectively with saturated aqueous common salt and distillation washing, revolve the steaming solvent, obtain the white solid crude product, adopt at last ethyl acetate/methanol to obtain pure solid product DOOPCF as leacheate through silica gel column chromatography separating-purifying crude product.This DOOPCF productive rate is 38%, and its mass spectroscopy is MALDI/TOF-MS:m/z:1305 (M
+).This DOOPCF chemical equation can be expressed as follows:
The DOOPCF organic semiconductor material of the present embodiment 3 preparations is detected by thermogravimetric analyzer (TGA), analysis condition is nitrogen atmosphere, when sweep velocity is 10 ℃/min, the heat decomposition temperature that records the DOOPOF organic semiconductor material of preparation in the present embodiment 1 is 435 ℃, has illustrated that this DOOPCF organic semiconductor material thermal stability is high.
Application Example 1
With 2 of embodiment 1 preparation, 7-two (diphenyl phosphine oxygen base)-9, the preparation of the organic electroluminescence device (OLED) of luminescent layer is done in the conduct of 9-two (9-(4-p-methoxy-phenyl) carbazole-3-yl) fluorenes (DMOPCF) organic semiconductor material:
See also Fig. 2, show the DMOPCF that adopts above-described embodiment 1 preparation as the organic electroluminescence device of making luminescent layer, it comprises matrix 11, anode layer 12, hole injection layer 13, hole transmission layer 14, luminescent layer 15, hole blocking layer-electron transfer layer 16, electron injecting layer 17, the cathode layer 18 that is cascading.Wherein, matrix 11 is glass, and anode 12 can adopt tin indium oxide (referred to as ITO), is preferably the tin indium oxide that square resistance is 10-20 Ω/; Hole injection layer 13 is 4,4 ', 4 " three (N-3-aminomethyl phenyl-N-phenyl amino) carbazoles (m-MTDATA); Hole transmission layer 14 is N, N '-two (Alpha-Naphthyl)-N, N '-phenylbenzene-4,4 '-diamines (NPB); Luminescent layer 15 is that two (4,6-difluorophenyl pyridine-N, C2 ') pyridine formyls of doping 10wt.% close iridium (FIrpic) phosphor material mixture layer in the DMOPCF main body; Hole barrier-electron transfer layer 16 is 1,3, the 5-three (benzene (TPBI) of 1-phenyl-1H-benzimidazolyl-2 radicals-yl); Electron injecting layer 17 is LiF; Cathode layer 18 be Mg: Ag (10: 1, alloy wt%).
The manufacturing processed of this organic electroluminescence device is as follows:
1) ito glass is carried out ultrasonic cleaning, and with after oxygen-Plasma processing, form the substrate of glass basis 11 and anode 12 combinations;
2) at ito anode 12 surperficial spin coating one deck m-MTDATA as hole injection layer, then at hole injection layer surface spin coating one deck NPB as hole transmission layer, thereby form respectively hole injection layer 13 and hole transmission layer 14;
3) at the mixture layer of hole transmission layer 14 surperficial spin coatings take DMOPCF FIrpic phosphor material of doping 10wt.% in the main body of preparation in embodiment 1, form luminescent layer 15;
4) the thick TPBI of spin coating one deck 40nm successively on luminescent layer 15 consists of hole barrier/electron transfer layer 16;
5) in hole barrier/electron transfer layer 16 outside surfaces plating a layer thickness be the LiF formation electron injecting layer 17 of 1nm;
6) at electron injecting layer 17 surface vacuum evaporation metal magnesium silver alloys, form metallic cathode 18, obtain organic electroluminescence device.
DMOPCF film among this application embodiment 1 is carried out the fluorescence radiation spectroscopic analysis, its fluorescence radiation spectrogram as shown in Figure 3, its maximum emission wavelength belongs to blue light range at 447nm.
With the OLED device of this application embodiment 1 preparation at room temperature, carry out performance test under the atmospheric environment, test result shows that this OLED device obtained very high efficient, and external quantum efficiency is up to 17.1%.
Application Example 2
With 2 of the embodiment of the invention 2 preparation, 7-two (diphenyl phosphine oxygen base)-9,9-two (9-(4-tert.-butoxy phenyl) carbazole-3-yl) fluorenes (DBOPCF) organic semiconductor material are as the preparation of the solar cell device of active coating:
See also Fig. 4, this solar cell device comprises glass-base 21, transparent anode 22, middle supplementary layer 23, active coating 24, the negative electrode 25 that stacks gradually.Transparent anode 22 can adopt tin indium oxide (referred to as ITO), is preferably the tin indium oxide that square resistance is 10-20 Ω/.Middle supplementary layer 23 adopts poly-3,4-ethylenedioxy thiophene and polystyrene-sulfonic acid matrix material (referred to as PEDOT:PSS).Active coating 24 comprises electron donor material and electron acceptor material, and electron donor material adopts the DBOPCF of embodiment 2 preparations, and electron acceptor material can be [6,6] phenyl-C
61-methyl-butyrate (referred to as PCBM).Negative electrode 25 can adopt aluminium electrode or double-metal layer electrode, such as Ca/Al or Ba/Al etc., and its thickness is preferably 170nm, 30nm, 130nm or 60nm.Glass-base 21 can be used as bottom, during making, choose ito glass, and after ultrasonic cleaning, process supplementary layer 23 in the middle of ito glass applies with oxygen-Plasma, in the middle of again the DBOPCF of embodiment 2 preparation and electron acceptor material being coated on after by blend on the supplementary layer 23, form active coating 24, and then by vacuum evaporation technology deposition cathode 25 on active coating 24, obtain above-mentioned solar cell device.This solar cell device also needs through heating under 110 degrees centigrade of air tight conditions 4 hours, drop to again room temperature, can effectively increase order and the regularity arranged between interior each group of molecule and molecule segment after device is annealed, improve transmission speed and the efficient of carrier mobility, and then improve photoelectric transformation efficiency.In the present embodiment, the thickness of negative electrode 25Al layer is respectively 170nm.
As shown in Figure 4, under illumination, light transmission glass-base 21 and ITO electrode 22, the luminescent material in the active coating 24 absorbs luminous energy, and produces exciton, these excitons move to electron donor(ED)/acceptor material at the interface again, and with transfer transport to electron acceptor material, such as PCBM, realize the separation of electric charge, thereby form freely current carrier, i.e. freely electronics and hole.These freely electronics along electron acceptor material to metallic cathode transmission and collected by negative electrode, the hole is along electron donor material to ito anode transmission and collected by anode freely, thereby forms photoelectric current and photovoltage, realizes opto-electronic conversion, during external load 26, can power to it.
Application Example 3
Contain 2 of the embodiment of the invention 3 preparations, 7-two (diphenyl phosphine oxygen base)-9, the preparation of 9-two (9-(4-n-octyloxy phenyl) carbazole-3-yl) fluorenes (DOOPCF) organic field effect tube:
See also Fig. 5, this organic field effect tube comprises substrate 31, insulation layer 32, decorative layer 33, the organic semiconductor layer 34 that is cascading and is located at source electrode 35 and drain electrode 36 on the organic semiconductor layer 34.Wherein, substrate 31 can be but be not limited to highly doped silicon chip (Si), and insulation layer 32 can be but be not limited to micro-nano (such as 450nm) thick SiO
2Organic semiconductor layer 34 adopts the DOOPCF of above-described embodiment 3 preparations.Source electrode 35 and drain electrode 36 all can adopt but be not limited to gold.Decorative layer 33 can be but be not limited to octadecyl trichlorosilane alkane (OTS).
The manufacturing processed of this organic field effect tube is as follows:
1) clean doped silicon substrate 31, deposition has the SiO of insulating effect
2Layer 32;
2) at SiO
2Apply OTS on the insulation layer 32, form OTS layer 33;
3) apply one deck at the DOOPCF of embodiment 3 preparations at OTS layer 33, form organic semiconductor layer 34;
4) source electrode 35 and the drain electrode 36 of metallic gold material are set at organic semiconductor layer 34, obtain organic field effect tube.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. organic semiconductor material that contains carbazole, its general formula of molecular structure is following (I):
(I) in the formula, R is alkoxyl group.
2. the organic semiconductor material that contains carbazole according to claim 1, it is characterized in that: carbonatoms is C in the described alkoxyl group
1～C
8
3. an organic semiconductor material preparation method who contains carbazole comprises the steps:
Obtain the compd A that following structural formula represents, wherein, R is alkoxyl group,
A：
In the system of anhydrous, oxygen-free environment and organic solvent, under-78 ℃～-70 ℃ temperature, with compd A and n-Butyl Lithium hybrid reaction, add again diphenyl phosphine chloride first, be warming up to 20～25 ℃ and continue reaction down, obtain intermediate product;
With the dissolving of described intermediate product, and add oxygenant and carry out oxidizing reaction, obtain the organic semiconductor material that contains carbazole of following general structure (I) expression,
4. the organic semiconductor material preparation method who contains carbazole according to claim 3, it is characterized in that: the mol ratio of described n-Butyl Lithium, compd A and diphenyl phosphine chloride three reactants is 2: 1: 2～2.5: 1: 2.5.
5. the organic semiconductor material preparation method who contains carbazole according to claim 3 is characterized in that: the time of described compd A and n-Butyl Lithium reaction is 1～3 hour.
6. the organic semiconductor material preparation method who contains carbazole according to claim 3 is characterized in that: be 3～12 hours in described 20～25 ℃ of lower times of continuing reaction.
7. the organic semiconductor material preparation method who contains carbazole according to claim 3, it is characterized in that: described oxygenant is H
2O
2
8. the organic semiconductor material preparation method who contains carbazole according to claim 7 is characterized in that: described H
2O
2With the mol ratio of described intermediate product be: 100: 1～160: 1.
9. the organic semiconductor material preparation method who contains carbazole according to claim 3 is characterized in that: described organic solvent is at least a in tetrahydrofuran (THF), benzene, hexanaphthene, the ether.
According to claim 1 to 2 arbitrary described organic semiconductor material that contain carbazole at organic electroluminescent device, organic solar batteries, organic field effect tube, organic optical memory, organic non-linear optical properties or/and the application in the organic laser.
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Cited By (2)
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| CN113214229A (en) * | 2021-05-20 | 2021-08-06 | 南京邮电大学 | Fluorenyl thermal activation delayed fluorescent material and preparation method and application thereof |
| WO2024043615A1 (en) * | 2022-08-26 | 2024-02-29 | 부경대학교 산학협력단 | Novel organic monomolecular compound with modified electron transport characteristics, and device including same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113214229A (en) * | 2021-05-20 | 2021-08-06 | 南京邮电大学 | Fluorenyl thermal activation delayed fluorescent material and preparation method and application thereof |
| CN113214229B (en) * | 2021-05-20 | 2022-08-30 | 南京邮电大学 | Fluorenyl thermal activation delayed fluorescent material and preparation method and application thereof |
| WO2024043615A1 (en) * | 2022-08-26 | 2024-02-29 | 부경대학교 산학협력단 | Novel organic monomolecular compound with modified electron transport characteristics, and device including same |
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