CN1176180C - High-molecular luminous material with energy-transfer main chain and its preparing process - Google Patents
High-molecular luminous material with energy-transfer main chain and its preparing process Download PDFInfo
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- CN1176180C CN1176180C CNB021160465A CN02116046A CN1176180C CN 1176180 C CN1176180 C CN 1176180C CN B021160465 A CNB021160465 A CN B021160465A CN 02116046 A CN02116046 A CN 02116046A CN 1176180 C CN1176180 C CN 1176180C
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B57/00—Other synthetic dyes of known constitution
- C09B57/08—Naphthalimide dyes; Phthalimide dyes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B57/00—Other synthetic dyes of known constitution
- C09B57/008—Triarylamine dyes containing no other chromophores
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
Abstract
The present invention relates to a high-molecular luminescent material with energy transferring type main chains and a method for preparing the luminescent material. 4-amido-1, 8-naphthalimide is used as basic raw material to synthesize functional naphthalimide monomers with high fluorescence quantum efficiency, and the high-molecular luminescent material with energy transferring type main chains is formed by copolymerization reaction. The luminescence of base units of naphthalimide derivatives is enhanced to realize the high fluorescence quantum efficiency through the energy transfer from conjugated high-molecular main chains to base groups of the naphthalimide derivatives. The content of the base units of the naphthalimide derivatives is controlled to regulate the effective conjugated length and the forbidden band width to realize the color regulation and control from green light to salmon pink light.
Description
Technical field: the present invention relates to high-molecular luminous material with energy-transfer main chain and preparation method thereof, belong to photoelectron material and technical field.
Background technology: in recent years, high-molecular luminous material and device are subjected to people and greatly pay close attention to and great attention, distinguishing features such as that its key is that polymeric light-emitting element has is ultra-thin, flexibility and big area, and its every performance index have all reached the practicability requirement, and the ripening degree of its technical matters has reached commercialization eve.The high-molecular luminous material system mainly concentrates on following a few class: poly-thiophene phenol (PTh), polystyrene support (PPV), polyhenylene (PPP), poly alkyl fluorene (PAF) etc.Wherein polyhenylene and poly alkyl fluorene are the high molecular typical case's representatives of blue light owing to have big energy gap, have good light and thermally stable, are considered to a most rising family macromolecule electroluminescent material.For realizing the green glow and the red emission of polyhenylene or poly alkyl fluorene family macromolecule, take copolymerization to regulate and control effective conjugate length and adjusting energy gap usually.For example: DOW company developed serial triarylamine fluorene copolymer and diazosulfide base fluorene copolymer (M.Inbasekaran et al., U.S.Patent 99/07876; Synthetic Metal, 111/112,397,2000).At present, blue polyhenylene or poly alkyl fluorene family macromolecule have been realized high fluorescence efficiency, but green, orange and red polyhenylene or poly alkyl fluorene family macromolecule still are faced with problems such as the lower and description of materials of fluorescence efficiency is less.
Summary of the invention: the purpose of this invention is to provide a kind of high-molecular luminous material with energy-transfer main chain;
Another purpose of invention provides a kind of preparation method of high-molecular luminous material with energy-transfer main chain.
Have the characteristics that high fluorescence quantum efficiency and aryl interpolymer have efficient blue emission and the actual needs of development high-level efficiency high-molecular luminous material based on the naphthalimide derivative primitive, the present invention adopts the naphthalimide derivative with high fluorescence quantum efficiency to be the structure primitive, it is copolymerized to the blue light high polymer main chain, constructs high-molecular luminous material with energy-transfer main chain.Shift by the energy of conjugated polymer main chain, strengthen the luminous of naphthalimide derivative primitive, realize its high fluorescence quantum efficiency to the naphthalimide derivative group; By the content of control naphthalimide derivative primitive, regulate effective conjugate length and energy gap, realize color regulation and control from green glow to tangerine light.
High-molecular luminous material with energy-transfer main chain provided by the invention has following basic structure:
The preparation method of high-molecular luminous material with energy-transfer main chain mainly comprises two committed steps, functionalized naphthalimide monomer preparation and polyreaction;
1). functionalized naphthalimide monomer preparation:
Under nitrogen protection to a certain amount of 4-amino-9-alkyl-1, the dibromo aromatic hydrocarbons that adds 3-20 times of molar weight in the 8-naphthalimide, the Anhydrous potassium carbonate that adds 1-3 molar weight doubly again, 0.04-0.3 the cuprous iodide of molar weight doubly, the 18-hat-6 of 0.01-0.1 times of molar weight adds 1 of 0.5-8 molar weight doubly in mixture, 3-dimethyl-3,4,5,6-tetrahydrochysene-2-pyrimidone (DMPU) is a solvent, reacted 24-48 hour in 140-220 ℃ under the magnetic agitation, the dichloromethane extraction product, pickling, ammoniacal liquor is washed, washing, the column chromatography separated product gets pure intermediate product, and productive rate is 45%-76%;
2). the high-molecular luminous material with energy-transfer main chain preparation:
Adopt the Suzuki reaction to prepare the energy transfer high-molecular luminous material by the following method: the aromatics reaction monomers mixture that in nitrogen atmosphere downhill reaction bottle, adds naphthalimide derivative monomer and two bromos, wherein naphthalimide derivative monomeric charge molar content is 2.5%-100%, the two boric acid aryl derivatives that add equimolar amount again, tetrahydrofuran (THF) dissolving with 30-120 molar weight doubly, the Carbon Dioxide potassium solution that adds the 2M of 6-18 times of molar weight again, after the reflux, four (triphenylphosphines) that add boric acid amount of substance 1-8% close palladium, react after 3-5 days, use the chloroform extraction product, washing, the methyl alcohol sedimentation; Product is placed apparatus,Soxhlet's, use the acetone extracting, product vacuum-drying.Polymkeric substance solid state fluorescence quantum yield is the highest to surpass 40%, and glow color can be by green to orange.
Embodiment is as follows:
Embodiment 1:4-N, N-two (4-bromobenzene) amino-9-decyl-1, the 8-naphthalimide is monomeric synthetic
In nitrogen protection downhill reaction bottle, add 0.211g (0.6mmol) 4-amino-9-decyl-1; the 8-naphthalimide; 2.27g (9.6mmol) paradibromobenzene; 0.13g (0.9mmol) Anhydrous potassium carbonate; 0.008g (0.03mmol) the 18-hat-6; 0.025g (0.06mol) mixture of cuprous iodide is a solvent with 0.07 milliliter of DMPU.Reacted 40 hours in 190 ℃ under the magnetic agitation.The dichloromethane extraction product, with the salt pickling of 1N once, it is colourless that ammoniacal liquor is washed till water layer, washing repeatedly, with petrol ether/ethyl acetate=1.5: 8.5 be leacheate through the silica gel column chromatography separated product, must the orange solid, productive rate 76%.
Embodiment 2:4-N, N-two [7-(2-bromo-9,9-dihexyl fluorenyl)] amino-9-decyl-1, the 8-naphthalimide is monomeric synthetic
In nitrogen protection downhill reaction bottle, add 0.211g (0.6mmol) 4-amino-9-decyl-1; the 8-naphthalimide; 5.91g (12mmol) 2; 7-two bromo-9; 9-dihexyl fluorenes, 0.26g (1.8mmol) Anhydrous potassium carbonate, 0.016g (0.06mmol) 18-hat-6; 0.075g (0.18mol) mixture of cuprous iodide is a solvent with 0.56 milliliter of DMPU.Reacted 48 hours in 220 ℃ under the magnetic agitation.The dichloromethane extraction product, with the salt pickling of 1N once, it is colourless that ammoniacal liquor is washed till water layer, washing repeatedly, with petrol ether/ethyl acetate=1.5: 8.5 be leacheate through the silica gel column chromatography separated product, must the orange solid, productive rate 45%.
Embodiment 3:4-N, N-two [4-(4 '-bromo biphenyl base)] amino-9-decyl-1, the 8-naphthalimide is monomeric synthetic
In nitrogen protection downhill reaction bottle, add 0.211g (0.6mmol) 4-amino-9-decyl-1; the 8-naphthalimide; 0.562g (1.8mmol) 4; 4 '-'-dibromobiphenyl; 0.09g (0.6mmol) Anhydrous potassium carbonate; 0.0015g (0.006mmol) the 18-hat-6, the mixture of 0.01g (0.024mol) cuprous iodide is a solvent with 0.035 milliliter of DMPU.Reacted 24 hours in 140 ℃ under the magnetic agitation.The dichloromethane extraction product, with the salt pickling of 1N once, it is colourless that ammoniacal liquor is washed till water layer, washing repeatedly, with petrol ether/ethyl acetate=1.5: 8.5 be leacheate through the silica gel column chromatography separated product, must the orange solid, productive rate 60%.
Embodiment 4:4-N, N-two [7-(2-bromo-9-butyl carbazyl)] amino-9-decyl-1, the 8-naphthalimide is monomeric synthetic
In nitrogen protection downhill reaction bottle, add 0.211g (0.6mmol) 4-amino-9-decyl-1; the 8-naphthalimide; 4.10g (10mmol) 2; 7-bromo-9-butyl carbazole; 0.26g (0.9mmol) Anhydrous potassium carbonate; 0.008g (0.03mmol) the 18-hat-6, the mixture of 0.025g (0.06mol) cuprous iodide is a solvent with 0.07 milliliter of DMPU.Reacted 40 hours in 190 ℃ under the magnetic agitation.The dichloromethane extraction product, with the salt pickling of 1N once, it is colourless that ammoniacal liquor is washed till water layer, washing repeatedly, with petrol ether/ethyl acetate=1.5: 8.5 be leacheate through the silica gel column chromatography separated product, must the orange solid, productive rate 69%.
Embodiment 5: the synthetic and sign of high-molecular luminous material
Under the nitrogen atmosphere protection; in 25 milliliters of there-necked flasks, add 0.654g (1mmol) 4-N; N-two (4-bromobenzene) amino-9-decyl-1; the 8-naphthalimide; 0.246g (1mmol) 1; 4-two (trimethylene boric acid ester) benzene is dissolved in 10 milliliters of tetrahydrofuran (THF)s, adds 4 milliliters of the solution of potassium carbonate of 2M again in solution, and mixture is heated to backflow under induction stirring.Add 36mg (0.03mmol) four (triphenylphosphine) subsequently and close palladium, reacted 3 days.Use the chloroform extraction product, wash repeatedly methyl alcohol sedimentation three times.Product is placed apparatus,Soxhlet's, with acetone extracting one day.Product vacuum-drying gets the orange solid, productive rate 37%.Product property is as follows: weight-average molecular weight is 11000, and heat decomposition temperature is 351 ℃, and the outer maximum absorption of solid violet is 348nm, 450nm, and solid fluorescence is emitted as 606nm, and the solid state fluorescence quantum yield is 2.6%.
Embodiment 6: the synthetic and sign of high-molecular luminous material
For obtaining copolymerized macromolecule, reaction monomers is changed into three kinds by two kinds.Concrete reaction monomers feed ratio is as follows: 0.131g (0.2mmol) 4-N, N-two (4-bromobenzene) amino-9-decyl-1,8-naphthalimide, 0.246g (1mmol) 1,4-two (trimethylene boric acid ester) benzene, 0.438g (0.8mmol) 9,9-dioctyl-2,7-dibromo fluorenes, THF changes 2.5 milliliters into, four (triphenylphosphines) close palladium and change 12mg (0.01mmol) into, and the solution of potassium carbonate of 2M changes 3 milliliters into, and other condition and treatment step are with embodiment 5.Product is the safran solid, productive rate 34%.Product property is as follows: weight-average molecular weight is 31100, and heat decomposition temperature is 420 ℃, and the outer maximum absorption of solid violet is 394nm, and solid fluorescence is emitted as 585nm, and the solid state fluorescence quantum yield is 25.7%.
Embodiment 7: the synthetic and sign of high-molecular luminous material
For obtaining copolymerized macromolecule, reaction monomers is changed into three kinds by two kinds.Concrete reaction monomers feed ratio is as follows: 0.065g (0.1mmol) 4-N, N-two (4-bromobenzene) amino-9-decyl-1,8-naphthalimide, 0.246g (1mmol) 1,4-two (trimethylene boric acid ester) benzene, 0.493g (0.9mmol) 9,9-dioctyl-2,7-dibromo fluorenes, THF changes 8 milliliters into, and four (triphenylphosphines) close palladium and change 96mg (0.08mmol) into, and the solution of potassium carbonate of 2M changes 9 milliliters into, reacted 5 days, other condition and treatment step are with embodiment 5.Product is the tawny solid, productive rate 35%.Product property is as follows: weight-average molecular weight is 26700, and heat decomposition temperature is 414 ℃, and the outer maximum absorption of solid violet is 386nm, and solid fluorescence is emitted as 576nm, and the solid state fluorescence quantum yield is 40.6%.
Embodiment 8: the synthetic and sign of high-molecular luminous material
For obtaining copolymerized macromolecule, reaction monomers is changed into three kinds by two kinds.Concrete reaction monomers feed ratio is as follows: 0.033g (0.05mmol) 4-N, N-two (4-bromobenzene) amino-9-decyl-1, the 8-naphthalimide, 0.246g (1mmol) 1,4-two (trimethylene boric acid ester) benzene, 0.521g (0.95mmol) 9,9-dioctyl-2,7-dibromo fluorenes, other condition and treatment step are with embodiment 5.Product is the tawny solid, productive rate 31%.Product property is as follows: weight-average molecular weight is 27900, and heat decomposition temperature is 421 ℃, and the outer maximum absorption of solid violet is 371nm, and solid fluorescence is emitted as 566nm, and the solid state fluorescence quantum yield is 32.8%.
Embodiment 9: the synthetic and sign of high-molecular luminous material
For obtaining copolymerized macromolecule, reaction monomers is changed into three kinds by two kinds.Concrete reaction monomers feed ratio is as follows: 0.016g (0.025mmol) 4-N, N-two (4-bromobenzene) amino-9-decyl-1, the 8-naphthalimide, 0.246g (1mmol) 1,4-two (trimethylene boric acid ester) benzene, 0.534g (0.975mmol) 9,9-dioctyl-2,7-dibromo fluorenes, other condition and treatment step are with embodiment 5.Product is the tawny solid, productive rate 33%.Product property is as follows: weight-average molecular weight is 23400, and heat decomposition temperature is 420 ℃, and the outer maximum absorption of solid violet is 372nm, and solid fluorescence is emitted as 559nm, and the solid state fluorescence quantum yield is 25.2%.
Embodiment 10: the synthetic and sign reaction monomers of high-molecular luminous material
With reaction monomers 9,9-dioctyl-2,7-dibromo fluorenes are replaced by 0.212g (0.9mmol) paradibromobenzene, and other monomer and reaction conditions and treatment step are with embodiment 6.Product is the safran solid, productive rate 30%.
Embodiment 11: the synthetic and sign of high-molecular luminous material
With reaction monomers 9,9-dioctyl-2,7-dibromo fluorenes is replaced by 0.392g (0.9mmol) 2,5-two hexyloxy-1, the 4-dibromobenzene, other monomer and reaction conditions and treatment step are with embodiment 6.Product is the safran solid, productive rate 36%.
Embodiment 12: the synthetic and sign of high-molecular luminous material
With reaction monomers 9,9-dioctyl-2,7-dibromo fluorenes is replaced by 0.304g (0.9mmol) 9, the 10-dibromoanthracene, other monomer and reaction conditions and treatment step are with embodiment 6.Product is the safran solid, productive rate 32%.
Embodiment 13: the synthetic and sign of high-molecular luminous material
With reaction monomers 9,9-dioctyl-2,7-dibromo fluorenes are replaced by 0.369g (0.9mmol) 9-hexyl-2,7-dibromo carbazole, and other monomer and reaction conditions and treatment step are with embodiment 6.Get the safran solid, productive rate 37%.
Embodiment 14: the synthetic and sign of high-molecular luminous material
With reaction monomers by 9,9-dioctyl-2,7-dibromo fluorenes is replaced by 0.281g (0.9mmol) 4,4 '-'-dibromobiphenyl, other monomer and reaction conditions and treatment step are with embodiment 6.Product is the safran solid, productive rate 34%.
Embodiment 15: the synthetic and sign of high-molecular luminous material
With reaction monomers 1,4-two (trimethylene boric acid ester) benzene is replaced by 0.366g (1mmol) 2,4-two hexyloxy-1, and 4-hypoboric acid base benzene, other monomer and reaction conditions and treatment step are with embodiment 6.Product is the orange solid, productive rate 32%.
Embodiment 16: the synthetic and sign of high-molecular luminous material
With reaction monomers 4-N, N-two (4-bromobenzene) amino-9-decyl-1, the 8-naphthalimide is replaced by 1.168g (1mmol) 4-N, N-two [7-(2-bromo-9,9-dihexyl fluorenyl)] amino-9-decyl-1, the 8-naphthalimide, other monomer and reaction conditions and treatment step are with embodiment 5.Product is the orange solid, productive rate 37%.
Embodiment 17: the synthetic and sign of high-molecular luminous material
With reaction monomers 4-N, N-two (4-bromobenzene) amino-9-decyl-1, the 8-naphthalimide is replaced by 0.806g (1mmol) 4-N, N-two [4-(4 '-bromo biphenyl base)] amino-9-decyl-1, the 8-naphthalimide, other monomer and reaction conditions and treatment step are with embodiment 5.Product is the orange solid, productive rate 35%.
Embodiment 18: the synthetic and sign of high-molecular luminous material
With reaction monomers 4-N, N-two (4-bromobenzene) amino-9-decyl-1, the 8-naphthalimide is replaced by 0.978g (1mmol) 4-N, N-two [7-(2-bromo-9-butyl carbazyl)] amino-9-decyl-1, the 8-naphthalimide, other monomer and reaction conditions and treatment step are with embodiment 5.Product is the orange solid, productive rate 31%.
Claims (10)
1. high-molecular luminous material with energy-transfer main chain is characterized in that having following structure:
R wherein
1, R
2, R
3And R
4Be hydrogen, alkyl, alkoxyl group, R
1, R
2, R
3And R
4Can be identical, also can be different, Ar
1Be phenyl, dialkyl group fluorenyl, xenyl or 9-alkyl carbazole base, 0＜m≤1,0≤n＜1, m+n=1;
2. a kind of high-molecular luminous material with energy-transfer main chain as claimed in claim 1 is characterized in that described alkyl is butyl, hexyl or decyl.
3. a kind of high-molecular luminous material with energy-transfer main chain as claimed in claim 1 is characterized in that described alkoxyl group is a hexyloxy.
4. a kind of high-molecular luminous material with energy-transfer main chain as claimed in claim 1 is characterized in that described dialkyl group fluorenyl is 9,9 '-two hexyl fluorenyls.
5. a kind of high-molecular luminous material with energy-transfer main chain as claimed in claim 1 is characterized in that described 9-alkyl carbazole base is a 9-butyl carbazyl.
6. the preparation method of a high-molecular luminous material with energy-transfer main chain is characterized in that technological process is as follows:
1) functionalized naphthalimide monomer preparation:
Under nitrogen protection to a certain amount of 4-amino-9-alkyl-1, the dibromo aromatic hydrocarbons that adds 3-20 times of molar weight in the 8-naphthalimide, the Anhydrous potassium carbonate that adds 1-3 molar weight doubly again, 0.04-0.3 the cuprous iodide of molar weight doubly, 0.01-0.1 doubly the hexaoxacyclooctadecane-6 of molar weight-6 adds 1 of 0.5-8 molar weight doubly, 3-dimethyl-3 in mixture, 4,5,6-tetrahydrochysene-2-pyrimidone is a solvent, reacts 24-48 hour in 140-220 ℃ under the magnetic agitation, the dichloromethane extraction product, pickling, ammoniacal liquor is washed, washing, the column chromatography separated product gets pure intermediate product;
2) intramolecular energy transfevent high-molecular luminous material preparation:
Adopt the Suzuki reaction, the aromatics reaction monomers mixture that in nitrogen atmosphere downhill reaction bottle, adds naphthalimide derivative monomer and two bromos, wherein naphthalimide derivative monomeric charge molar content is 2.5%-100%, add and 4-amino-9-alkyl-1 again, two boric acid aryl derivatives of 8-naphthalimide equimolar amount, tetrahydrofuran (THF) dissolving with 30-120 molar weight doubly, the Carbon Dioxide potassium solution that adds the 2M of 6-18 times of molar weight again, after the reflux, four (triphenylphosphines) that add boric acid amount of substance 1-8% close palladium, react after 3-5 days, use the chloroform extraction product, washing repeatedly, the methyl alcohol sedimentation, product is placed apparatus,Soxhlet's, use the acetone extracting, product vacuum-drying.
7. the preparation method of a kind of high-molecular luminous material with energy-transfer main chain as claimed in claim 6, it is characterized in that described naphthalimide derivative monomer is 4-N, N-two (4-bromobenzene) amino-9-decyl-1,8-naphthalimide, 4-N, N-two [7-(2-bromo-9,9-dihexyl fluorenyl)] amino-9-decyl-1,8-naphthalimide, 4-N, N-two [4-(4 '-bromo biphenyl base)] amino-9-decyl-1,8-naphthalimide or 4-N, N-two [7-(2-bromo-9-butyl carbazyl)] amino-9-decyl-1, the 8-naphthalimide.
8. the preparation method of a kind of high-molecular luminous material with energy-transfer main chain as claimed in claim 6, the aromatics reaction monomers that it is characterized in that described two bromos is 9,9-dioctyl-2,7-dibromo fluorenes, paradibromobenzene, 2,5-two hexyloxy-1,4-dibromobenzene, 9,10-dibromoanthracene, 9-hexyl-2,7-dibromo carbazole or 4,4 '-'-dibromobiphenyl.
9. the preparation method of a kind of high-molecular luminous material with energy-transfer main chain as claimed in claim 6 is characterized in that described pair of boric acid aryl derivatives is 2,4-two hexyloxy-1,4-hypoboric acid base benzene or 1,4-two (trimethylene boric acid ester) benzene.
10. the preparation method of high-molecular luminous material with energy-transfer main chain as claimed in claim 6 is characterized in that regulating effective conjugate length and energy gap by the content of control naphthalimide derivative primitive, realizes the color regulation and control from green glow to tangerine light.
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| DE10249723A1 (en) * | 2002-10-25 | 2004-05-06 | Covion Organic Semiconductors Gmbh | Conjugated polymers containing arylamine units, their preparation and use |
| CN100357390C (en) * | 2004-05-18 | 2007-12-26 | 统宝光电股份有限公司 | Luminescent materials and preparation method thereof and luminescent elements using same |
| DE112005003100T5 (en) | 2004-12-03 | 2008-01-24 | Sumitomo Chemical Co., Ltd. | Triarylamine-containing polymers and electronic devices |
| CN1295298C (en) * | 2004-12-08 | 2007-01-17 | 中国科学院长春应用化学研究所 | Blue color electroluminescent macromolecular material and method for making same |
| JP5214910B2 (en) * | 2007-05-28 | 2013-06-19 | 国立大学法人九州大学 | Field effect transistor |
| CN101417996B (en) * | 2008-12-09 | 2013-04-10 | 苏州大学 | Compounds with symmetric structure containing carbazole and naphthalimide groups, preparation method and use thereof |
| US9074043B2 (en) | 2012-08-17 | 2015-07-07 | Harvatek Corporation | Compound for carrier transport, element and electronic device using the same |
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