CN116396744B - Electroluminescent microcapsule core material and preparation method thereof - Google Patents
Electroluminescent microcapsule core material and preparation method thereof Download PDFInfo
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- 239000003094 microcapsule Substances 0.000 title claims abstract description 45
- 239000011162 core material Substances 0.000 title claims abstract description 44
- 238000002360 preparation method Methods 0.000 title abstract description 12
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 66
- 239000000463 material Substances 0.000 claims abstract description 45
- 239000011787 zinc oxide Substances 0.000 claims abstract description 33
- 239000002096 quantum dot Substances 0.000 claims abstract description 29
- 239000000203 mixture Substances 0.000 claims abstract description 24
- 238000002156 mixing Methods 0.000 claims abstract description 18
- 238000001755 magnetron sputter deposition Methods 0.000 claims abstract description 12
- 239000011248 coating agent Substances 0.000 claims abstract description 10
- 238000000576 coating method Methods 0.000 claims abstract description 10
- 239000002245 particle Substances 0.000 claims description 15
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical group [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 7
- 239000010410 layer Substances 0.000 claims description 7
- 229910052725 zinc Inorganic materials 0.000 claims description 7
- 239000011701 zinc Substances 0.000 claims description 7
- 239000011247 coating layer Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 238000009210 therapy by ultrasound Methods 0.000 claims description 3
- 238000009832 plasma treatment Methods 0.000 claims description 2
- 238000001228 spectrum Methods 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 6
- 238000007747 plating Methods 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- 108010010803 Gelatin Proteins 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 229920000159 gelatin Polymers 0.000 description 3
- 239000008273 gelatin Substances 0.000 description 3
- 235000019322 gelatine Nutrition 0.000 description 3
- 235000011852 gelatine desserts Nutrition 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 101100030361 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) pph-3 gene Proteins 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- LVTJOONKWUXEFR-FZRMHRINSA-N protoneodioscin Natural products O(C[C@@H](CC[C@]1(O)[C@H](C)[C@@H]2[C@]3(C)[C@H]([C@H]4[C@@H]([C@]5(C)C(=CC4)C[C@@H](O[C@@H]4[C@H](O[C@H]6[C@@H](O)[C@@H](O)[C@@H](O)[C@H](C)O6)[C@@H](O)[C@H](O[C@H]6[C@@H](O)[C@@H](O)[C@@H](O)[C@H](C)O6)[C@H](CO)O4)CC5)CC3)C[C@@H]2O1)C)[C@H]1[C@H](O)[C@H](O)[C@H](O)[C@@H](CO)O1 LVTJOONKWUXEFR-FZRMHRINSA-N 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 description 1
- 229940093475 2-ethoxyethanol Drugs 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 238000006069 Suzuki reaction reaction Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- JNGZXGGOCLZBFB-IVCQMTBJSA-N compound E Chemical compound N([C@@H](C)C(=O)N[C@@H]1C(N(C)C2=CC=CC=C2C(C=2C=CC=CC=2)=N1)=O)C(=O)CC1=CC(F)=CC(F)=C1 JNGZXGGOCLZBFB-IVCQMTBJSA-N 0.000 description 1
- 239000012769 display material Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000012536 packaging technology Methods 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
- C09K11/025—Use of particular materials as binders, particle coatings or suspension media therefor non-luminescent particle coatings or suspension media
-
- 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
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
- H10K50/115—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers comprising active inorganic nanostructures, e.g. luminescent quantum dots
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
- H10K50/12—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers comprising dopants
-
- 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
- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/18—Metal complexes
- C09K2211/185—Metal complexes of the platinum group, i.e. Os, Ir, Pt, Ru, Rh or Pd
Abstract
The invention provides an electroluminescent microcapsule core material and a preparation method thereof, wherein the core material comprises the following components: an electrophosphorescent luminescent material, tetrapod-like zinc oxide whiskers, and quantum dots, the electrophosphorescent luminescent material: four needle-shaped zinc oxide whisker: the mass ratio of the quantum dots is 1: (1-3): (5-7), the method for producing the core material comprising: uniformly mixing the tetrapod-like zinc oxide whiskers subjected to magnetron sputtering coating treatment with quantum dots according to the mass ratio to obtain a first mixture, and mixing the first mixture with an electrophosphorescent luminescent material according to the mass ratio to obtain the electroluminescent microcapsule core material. The electroluminescent microcapsule core material has uniform luminous spectrum color gamut and can obviously reduce the intensity of blue light.
Description
Technical Field
The invention relates to the field of new display materials, in particular to an electroluminescent microcapsule core material and a preparation method thereof.
Background
The organic electroluminescent device has the advantages of high efficiency, low power consumption, high color gamut and the like, and the phosphorescent luminescent material has been widely paid attention to because of high internal quantum efficiency. However, the phosphorescent light-emitting material is sensitive to moisture, oxygen and the like, so that the phosphorescent light-emitting material needs to be packaged in the prior art, and a conventional packaging mode comprises a cover plate packaging technology such as a metal cover and a glass cover.
In the prior art, the problem that the wavelength power of blue light is higher in the light-emitting spectrum of the LED is mainly caused by that the energy of the blue light is stronger, other color fluorescent materials can be excited by the blue light photons, so that different colors of light can be emitted, the blue light emitting materials and the fluorescent materials are respectively packaged in different structures, the absorption of the blue light photons by the fluorescent materials is low, the blue light spectrum energy is higher, and how to provide an electroluminescent microcapsule core material capable of reducing the blue light spectrum energy for the packaging structure of the microcapsule is a technical problem to be solved at present.
Disclosure of Invention
In view of the above, the invention provides an electroluminescent microcapsule core material and a preparation method thereof, which aim to solve the problem of high energy of a blue light spectrum in the current LED light spectrum.
The technical scheme of the invention is realized as follows: the invention provides an electroluminescent microcapsule core material, which comprises an electrophosphorescent luminescent material, tetrapod-like zinc oxide whiskers and quantum dots, wherein the electrophosphorescent luminescent material comprises: four needle-shaped zinc oxide whisker: the mass ratio of the quantum dots is 1: (1-3): (5-7).
In some embodiments, the electrophosphorescent luminescent material isWherein R is-H, -CH 3 、-C 2 H 5 One of them.
In some embodiments, the electrophosphorescent luminescent material is
In some embodiments, the tetrapod-like zinc oxide whiskers are subjected to a surface magnetron sputtering coating treatment, and the coating layer is a zinc layer.
In the embodiment, the tetrapod-shaped zinc oxide whisker after surface magnetron sputtering coating has better affinity with InP/ZnS quantum dots, and is favorable for improving the adhesion between the two quantum dots, so that the filling amount of the o-quantum dots is improved, and the tetrapod-shaped zinc oxide whisker is used for supporting, so that the space between the electrophosphorescent luminescent material and the quantum dots can be kept, and quenching caused by high local concentration of the electrophosphorescent luminescent material is avoided.
In some embodiments, the thickness of the coating layer is 3-5nm.
In some embodiments, the tetrapod-like zinc oxide whiskers are subjected to a surface plasma treatment prior to the surface magnetron sputtering coating treatment.
In some embodiments, the quantum dots are InP/ZnS quantum dots having a particle size of 2-8nm.
In some embodiments, the mass ratio of quantum dots having a particle size of less than 5nm to quantum dots having a particle size of not less than 5nm is 1:3.
In the above embodiment, the granularity of the quantum dots is controlled within a certain size proportion range, so as to solve the problems of low luminous spectrum intensity and too high blue light intensity of the region between the blue light and the green light in a sealed manner, and the quantum dots are used for absorbing the high-intensity blue light and emitting light in the region between the blue light spectrum and the green light spectrum, thereby reducing the blue light intensity and improving the smoothness of the light intensity curve.
On the other hand, the invention also provides a preparation method of the electroluminescent microcapsule core material, which comprises the following steps:
uniformly mixing the tetrapod-like zinc oxide whiskers subjected to magnetron sputtering coating treatment with quantum dots according to the mass ratio to obtain a first mixture, and mixing the first mixture with an electrophosphorescent luminescent material according to the mass ratio to obtain the electroluminescent microcapsule core material.
In some embodiments, the four needle-shaped zinc oxide whiskers treated by magnetron sputtering coating are mixed with quantum dots and simultaneously subjected to ultrasonic treatment.
Compared with the prior art, the electroluminescent microcapsule core material has the following beneficial effects:
the electroluminescent microcapsule prepared by the electroluminescent microcapsule core material can emit blue light with smoother spectrum, overcomes the serious problem of blue light of the conventional phosphorescence luminescent material, and improves the saturation of the color gamut between the blue light and the green light by adding quantum dots with a certain proportion.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a graph of normalized luminous intensity for some embodiments of the present invention;
FIG. 2 is a graph of normalized luminous intensity for some embodiments of the present invention.
Detailed Description
The following description of the embodiments of the present invention will clearly and fully describe the technical aspects of the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, are intended to fall within the scope of the present invention.
Unless defined otherwise, all technical terms and science used herein have the same meaning as commonly understood by one of ordinary skill in the art to which embodiments of the present invention belong. If the definitions set forth in this section are contrary to or otherwise inconsistent with the definitions set forth in the patents, patent applications, published patent applications and other publications incorporated herein by reference, the definitions set forth in this section are preferentially set forth in the definitions set forth herein.
The preparation method of the electrophosphorescent luminescent material comprises the following steps:
compound a:and compound B: />In the atmosphere of protective gas, pd (PPh 3) 4 or Pd (PPh 3) 2Cl2 is used as a catalyst for catalysis, alkali solution Na2CO3 or K2CO3 and organic solvent AReflux stirring for 6-12h at 85-95 ℃ in the presence of benzene or tetrahydrofuran, performing suzuki reaction, separating and purifying to obtain a compound C:wherein R is-H, -CH 3 or-C 2 H 5 。
Under the atmosphere of protective gas, the compound C and IrCl3.3H2O are mixed according to the molar ratio of (2-3): 1 is dissolved in a mixed solution composed of 2-ethoxyethanol and water in a volume ratio of 3:1, the concentration of C in the mixed solution is 0.05-0.125mol/L, stirring treatment is carried out for 22-25h in a reflux state, and a compound D is obtained after separation and purification:
dissolving the compound D in dichloromethane, dropwise adding an organic solution of an organic salt of Ag at room temperature, filtering after the reaction is completed, removing a solvent after the filtrate is reserved to obtain a solid residue, and reacting the solid residue with the compound E under the atmosphere of protective gas:dissolving in acetonitrile, refluxing for 22-25h, separating and purifying to obtain the electrophosphorescent material:
example 1
The present embodiment provides a microcapsule core material, including: electrophosphorescent luminescent material:the preparation method comprises the steps of mixing tetrapod-like zinc oxide whiskers and InP/ZnS quantum dots with the particle size of 3nm according to the mass ratio of 1:5 to obtain a first mixture, and mixing the first mixture with an electrophosphorescent luminescent material according to the mass ratio of 6:1 to obtain the electroluminescent microcapsule core material.
Example 2
The embodiment providesA microcapsule core material comprising: electrophosphorescent luminescent material:the preparation method comprises the steps of mixing tetrapod-like zinc oxide whiskers and InP/ZnS quantum dots with diameters of 3nm according to a mass ratio of 1:5 to obtain a first mixture, and mixing the first mixture with an electrophosphorescent luminescent material according to a mass ratio of 6:1 to obtain the electroluminescent microcapsule core material.
Example 3
The present embodiment provides a microcapsule core material, including: electrophosphorescent luminescent material:the preparation method comprises the steps of mixing tetrapod-like zinc oxide whiskers and InP/ZnS quantum dots with diameters of 3nm according to a mass ratio of 1:5 to obtain a first mixture, and mixing the first mixture with an electrophosphorescent luminescent material according to a mass ratio of 6:1 to obtain the electroluminescent microcapsule core material.
Example 4
The present embodiment provides a microcapsule core material, including: electrophosphorescent luminescent material:the preparation method comprises the steps of mixing tetrapod-like zinc oxide whiskers and InP/ZnS quantum dots with diameters of 3nm according to a mass ratio of 1:7 to obtain a first mixture, and mixing the first mixture with an electrophosphorescent luminescent material according to a mass ratio of 8:1 to obtain the electroluminescent microcapsule core material.
Example 5
The present embodiment provides a microcapsule core material, including: electrophosphorescent luminescent material:the four-needle zinc oxide whisker and InP/ZnS quantum dot with the diameter of 3nm are mixed according to the mass ratio3:5 to obtain a first mixture, and mixing the first mixture with an electrophosphorescent luminescent material according to a mass ratio of 8:1 to obtain the electroluminescent microcapsule core material.
Example 6
The present embodiment provides a microcapsule core material, including: electrophosphorescent luminescent material:four needle-shaped zinc oxide whiskers and InP/ZnS quantum dots, wherein the particle size distribution of the InP/ZnS quantum dots is as follows: quantum dots with particle size greater than 2nm and less than 5 nm: the ratio of the quantum dots with the particle size of 5-8nm is 1:1, the tetrapod-like zinc oxide whisker and the InP/ZnS quantum dots are mixed according to the mass ratio of 1:5 to obtain a first mixture, and the first mixture is mixed with the electrophosphorescent luminescent material according to the mass ratio of 6:1 to obtain the electroluminescent microcapsule core material.
Example 7
The present embodiment provides a microcapsule core material, including: electrophosphorescent luminescent material:four needle-shaped zinc oxide whiskers and InP/ZnS quantum dots, wherein the particle size distribution of the InP/ZnS quantum dots is as follows: quantum dots with particle size greater than 2nm and less than 5 nm: the ratio of the quantum dots with the particle size of 5-8nm is 1:3, the tetrapod-like zinc oxide whisker and the InP/ZnS quantum dots are mixed according to the mass ratio of 1:5 to obtain a first mixture, and the first mixture is mixed with the electrophosphorescent luminescent material according to the mass ratio of 6:1 to obtain the electroluminescent microcapsule core material.
Example 8
The present embodiment provides a microcapsule core material, including: electrophosphorescent luminescent material:the zinc plating layer comprises four needle-shaped zinc oxide whiskers and InP/ZnS quantum dots with the particle size of 3nm, wherein the four needle-shaped zinc oxide whiskers are subjected to surface magnetron sputtering zinc plating treatment, and the thickness of the zinc plating layer is 3-5nm. Amount of tetrapod-like zinc oxide whisker and InP/ZnSMixing the sub-points according to the mass ratio of 1:5 to obtain a first mixture, and mixing the first mixture with an electrophosphorescent luminescent material according to the mass ratio of 6:1 to obtain the electroluminescent microcapsule core material.
Example 9
The present embodiment provides a microcapsule core material, including: electrophosphorescent luminescent material:the zinc oxide crystal whisker comprises four needle-shaped zinc oxide crystal whiskers and InP/ZnS quantum dots with the particle size of 3nm, wherein the four needle-shaped zinc oxide crystal whiskers are subjected to argon plasma surface treatment firstly and then surface magnetron sputtering zinc plating treatment, and the thickness of a zinc plating layer is 3-5nm. Mixing tetrapod-like zinc oxide whiskers and InP/ZnS quantum dots according to the mass ratio of 1:5, simultaneously assisting in ultrasonic treatment to obtain a first mixture, and mixing the first mixture with an electrophosphorescent luminescent material according to the mass ratio of 6:1 to obtain the electroluminescent microcapsule core material.
Comparative example
Directly combining the electrophosphorescent luminescent material:as a core material.
The core material is respectively prepared into microcapsules, and the preparation method of the microcapsules comprises the following steps:
dissolving gelatin in n-hexane to obtain 5% gelatin solution, adding the core material into gelatin solution, stirring to form emulsified dispersion system, regulating pH to 3.5 with 10% acetic acid, maintaining the emulsion temperature at 50deg.C, adding 20% sodium sulfate solution into the dispersion system, and reducing the emulsion temperature to 15deg.C to obtain microcapsule with particle diameter of 200 μm.
The microcapsule prepared by the method is mixed with a red light material and a green light phosphorescence material to be doped in the same luminescent layer, the luminescent layer is used in an LED luminescent display structure, and the luminescent spectrum is detected under the same power, and the obtained result is shown in figures 1 and 2.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (7)
1. An electroluminescent microcapsule core material comprising: an electrophosphorescent luminescent material, tetrapod-like zinc oxide whiskers, and quantum dots, the electrophosphorescent luminescent material: four needle-shaped zinc oxide whisker: the mass ratio of the quantum dots is 1: (1-3): (5-7) the electrophosphorescent luminescent material isWherein R is-H, -CH 3 、-C 2 H 5 The quantum dots are InP/ZnS quantum dots, and the granularity of the quantum dots is 2-8nm.
2. The electroluminescent microcapsule core material of claim 1, wherein the tetrapod-like zinc oxide whiskers are subjected to surface magnetron sputtering coating treatment, and the coating layer is a zinc layer.
3. The electroluminescent microcapsule core of claim 2, wherein the thickness of the coating layer is 3-5nm.
4. The electroluminescent microcapsule core material of claim 2, wherein the tetrapod-like zinc oxide whiskers are subjected to a surface plasma treatment prior to the surface magnetron sputtering coating treatment.
5. The electroluminescent microcapsule core material of claim 1, wherein the mass ratio of quantum dots having a particle size of less than 5nm to quantum dots having a particle size of not less than 5nm is 1:3.
6. The method for preparing an electroluminescent microcapsule core material according to any one of claims 1 to 5, comprising the steps of:
uniformly mixing the tetrapod-like zinc oxide whiskers subjected to magnetron sputtering coating treatment with quantum dots according to the mass ratio to obtain a first mixture, and mixing the first mixture with an electrophosphorescent luminescent material according to the mass ratio to obtain the electroluminescent microcapsule core material.
7. The method for preparing an electroluminescent microcapsule core material as claimed in claim 6, characterized in that the tetrapod-like zinc oxide whiskers treated by magnetron sputtering coating are mixed with quantum dots and simultaneously subjected to ultrasonic treatment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310242451.5A CN116396744B (en) | 2023-03-14 | 2023-03-14 | Electroluminescent microcapsule core material and preparation method thereof |
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| CN202310242451.5A CN116396744B (en) | 2023-03-14 | 2023-03-14 | Electroluminescent microcapsule core material and preparation method thereof |
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| CN116396744A CN116396744A (en) | 2023-07-07 |
| CN116396744B true CN116396744B (en) | 2024-01-09 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0358078A1 (en) * | 1988-08-29 | 1990-03-14 | Matsushita Electric Industrial Co., Ltd. | Fluorescent materials comprising zinc oxide whiskers |
| CN101638216A (en) * | 2001-03-30 | 2010-02-03 | 加利福尼亚大学董事会 | Methods of fabricating nanostructures and nanowires and devices fabricated therefrom |
| CN104170113A (en) * | 2012-01-27 | 2014-11-26 | 韦克森林大学 | Electroluminescent devices and applications thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0358078A1 (en) * | 1988-08-29 | 1990-03-14 | Matsushita Electric Industrial Co., Ltd. | Fluorescent materials comprising zinc oxide whiskers |
| CN101638216A (en) * | 2001-03-30 | 2010-02-03 | 加利福尼亚大学董事会 | Methods of fabricating nanostructures and nanowires and devices fabricated therefrom |
| CN104170113A (en) * | 2012-01-27 | 2014-11-26 | 韦克森林大学 | Electroluminescent devices and applications thereof |
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