CN109306265A - Perovskite quantum dot of polymer overmold and preparation method thereof - Google Patents

Perovskite quantum dot of polymer overmold and preparation method thereof Download PDF

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CN109306265A
CN109306265A CN201710631645.9A CN201710631645A CN109306265A CN 109306265 A CN109306265 A CN 109306265A CN 201710631645 A CN201710631645 A CN 201710631645A CN 109306265 A CN109306265 A CN 109306265A
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quantum dot
perovskite quantum
polymer
preparation
polymer overmold
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邓承雨
杨行
杨一行
钱磊
谢相伟
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TCL Corp
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    • C09K11/00Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/02Use of particular materials as binders, particle coatings or suspension media therefor
    • C09K11/025Use of particular materials as binders, particle coatings or suspension media therefor non-luminescent particle coatings or suspension media
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F120/00Homopolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
    • C08F120/02Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F120/52Amides or imides
    • C08F120/54Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
    • C08F120/60Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide containing nitrogen in addition to the carbonamido nitrogen
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2/00Processes of polymerisation
    • C08F2/46Polymerisation initiated by wave energy or particle radiation
    • C08F2/48Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
    • C08F2/50Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light with sensitising agents
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    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G73/00Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
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    • C08G73/0206Polyalkylene(poly)amines
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    • C09K11/00Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/66Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing germanium, tin or lead
    • C09K11/664Halogenides
    • C09K11/665Halogenides with alkali or alkaline earth metals

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Abstract

The present invention provides a kind of preparation methods of the perovskite quantum dot of polymer overmold, the following steps are included: providing perovskite quantum dot, perovskite quantum dot dispersion is formed into perovskite quantum dot solution in a solvent, wherein, the ligand of the perovskite quantum dot surface includes thionothiolic acid class ligand;Polymer monomer and photoinitiator are added in the perovskite quantum dot solution, under the conditions of water vapour content is lower than 30% ultraviolet irradiation, reaction generates the perovskite quantum dot of polymer overmold, wherein the polymer monomer is the unsaturated polymer monomer containing amino.

Description

Perovskite quantum dot of polymer overmold and preparation method thereof
Technical field
The invention belongs to perovskite technical field of quantum dot preparation more particularly to a kind of polymer overmolds and its perovskite amount The preparation method of son point.
Background technique
Inorganic perovskite quantum dot became a newcomer for being concerned and studying in " quantum dot family " in recent years. Inorganic perovskite quantum dot has narrow fluorescent emission half-peak breadth, high fluorescence quantum yield and is easy in the various function of surface modification The advantage of energy group;And also have unrivaled characteristic on biological chemical performance, and such as good bio-compatibility, low cell toxicant Property, it is extensive that these superior optical properties have inorganic perovskite quantum dot in the fields such as biochemical and optical analysis detection Application prospect.
Currently, common perovskite quantum dot, generally using thionothiolic acid class ligand as stabilizer in synthesis process, such as 2- mercapto Guanidine-acetic acid, 3- mercaptopropionic acid, dimercaptosuccinic acid, 4- mercaptobutyric acid etc..Thionothiolic acid class compound is used to coat as ligand Perovskite quantum dot, the carboxylate radical anion that quantum dot surface ionizes out can form the effect that identical charges repel each other, so that quantum dot Do not occur to reunite and precipitate.However, in acid condition, carboxylic acid is difficult to ionize, and therefore, perovskite quantum dot surface hardly band Charge, perovskite quantum dot are still easy to happen coagulation.In addition, although the thionothiolic acid class stabilizer of small molecule can divide to a certain degree It dissipates in quantum dot surface, but is difficult completely to coat perovskite quantum dot surface, the surface defect being consequently formed will lead to luminous The decline of efficiency.
Summary of the invention
The purpose of the present invention is to provide perovskite quantum dots of a kind of polymer overmold and preparation method thereof, it is intended to solve Coagulation occurs in acid condition for the perovskite quantum dot of thionothiolic acid class ligand and thionothiolic acid class ligand is difficult to perovskite quantum The problem of point surface coats completely.
The invention is realized in this way a kind of preparation method of the perovskite quantum dot of polymer overmold, including following step It is rapid:
Perovskite quantum dot is provided, it is molten that the perovskite quantum dot is dissolved in formation perovskite quantum dot in nonpolar solvent Liquid, wherein the perovskite quantum dot surface ligand includes thionothiolic acid class ligand;
It is added polymer monomer and photoinitiator in the perovskite quantum dot solution, under the conditions of ultraviolet irradiation, reaction Generate the perovskite quantum dot of polymer overmold, wherein the polymer monomer is the unsaturated polymer monomer containing amino.
And a kind of perovskite quantum dot of the polymer overmold by above method preparation, the perovskite quantum dot table Face ligand includes thionothiolic acid class ligand, and the perovskite quantum dot is coated with polymeric outer layer, the polymerization of the polymeric outer layer Object is amino-containing polymer.
The preparation method of the perovskite quantum dot of polymer overmold provided by the invention, in the calcium containing thionothiolic acid class ligand Titanium ore quantum dot surface introduces the polymer with flexible branch winding, forms fine and close cladding by Photoinitiated reactions Layer.On the one hand, contain amino in the polymer that Photoinitiated reactions generate, and in the carboxyl and polymer on script mercapto acids ligand Substituted-amino exist simultaneously, improve perovskite quantum dot in acid, the dispersibility in alkali environment, so that the calcium titanium of polymer overmold Under acid, alkaline condition coagulation does not occur for mine quantum dot, improves the quantum yield of perovskite quantum dot.On the other hand, Fine and close clad is formed in the perovskite quantum dot surface by the polymer, can reduce emission defects, further Improve luminous efficiency.
The perovskite quantum dot of polymer overmold provided by the invention does not occur coagulation under acid, alkaline condition, mentions The high quantum yield of perovskite quantum dot.And since the perovskite quantum dot surface forms fine and close clad, reduce Emission defects further increase luminous efficiency.
Specific embodiment
In order to which technical problems, technical solutions and advantageous effects to be solved by the present invention are more clearly understood, below in conjunction with Embodiment, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used to explain The present invention is not intended to limit the present invention.
The embodiment of the invention provides a kind of preparation methods of the perovskite quantum dot of polymer overmold, including following step It is rapid:
S01. perovskite quantum dot is provided, it is molten that perovskite quantum dot dispersion is formed perovskite quantum dot in a solvent Liquid, wherein the perovskite quantum dot includes thionothiolic acid class ligand;
S02. it is added polymer monomer and photoinitiator in the perovskite quantum dot solution, under the conditions of ultraviolet irradiation, Reaction generates the perovskite quantum dot of polymer overmold, wherein the polymer monomer is the unsaturated polymer containing amino Monomer.
Specifically, titanium ore quantum dot of the invention includes inorganic perovskite quantum and organic-inorganic calcium in above-mentioned steps S01 Titanium ore quantum, such as CsPbX3Quantum dot, wherein X is Cl, Br or I, CH3NH3PbX3, wherein X is Cl, Br or I.The calcium titanium Mine quantum dot surface ligand includes thionothiolic acid class ligand.Wherein, the thionothiolic acid class ligand include but is not limited to 2- thioacetic acid, At least one of 3- mercaptopropionic acid, dimercaptosuccinic acid, 4- mercaptobutyric acid.The solvent should have the perovskite quantum dot Preferable solubility property, such as can be conventional nonpolar solvent, it preferably include benzene, carbon tetrachloride, n-hexane, isooctane, first At least one of benzene, methylene chloride, diphenyl ether, chloroform, dichloroethanes, carbon disulfide, hexamethylene, hexane, petroleum ether.This hair In bright embodiment, it is molten that quantum dot is obtained described in 0.1-0.2g/1L configuration by the amount ratio of the perovskite quantum dot and solvent Liquid.
In the embodiment of the present invention, the perovskite quantum dot can use ready-made perovskite quanta point material, can also be with Voluntarily prepare.As a preferred embodiment, the perovskite quantum dot the preparation method is as follows:
S011., IA race metal halide, alkene solvent and thionothiolic acid are provided, are heated to 130 after dissolution under an inert atmosphere DEG C~160 DEG C, after reacting 0.1-24 hours, it is cooled to 80-100 DEG C, constant temperature 4-6 hours, prepares the first presoma;
S012. lead halide is dissolved in alkene solvent, is reacted 0.5-1 hours under vacuum conditions, thionothiolic acid and oil is added Amine is heated to 140-220 DEG C of reaction and prepares the second presoma;
S013. first presoma and the second presoma are mixed under 140-220 DEG C of constant temperature, after reaction Cooling treatment is handled using organic solvent crystallization, obtains perovskite quantum dot.
In above-mentioned steps S011, IA race metal in IA race metal halide be lithium, sodium, potassium, rubidium, in caesium at least One kind, halogen therein are at least one of chlorine, bromine, iodine.Preferably, the thionothiolic acid is 2- thioacetic acid, 3- sulfydryl third At least one of acid, dimercaptosuccinic acid, 4- mercaptobutyric acid, but not limited to this.The alkene solvent is as dissolution solvent, preferably For the long-chain olefin of carbon atom > 12.Specifically, the alkene solvent includes but is not limited to hexadecylene, octadecylene, icosa alkene, sheet Inventive embodiments more preferably have preferable deliquescent octadecylene to IA race metal halide and the thionothiolic acid.
In the embodiment of the present invention, it is preferred that the amount ratio of IA race metal halide and the thionothiolic acid be 0.01g~ 10g:1ml to have preferable reactivity, and avoids the big subsequent purification technique of the largely residual of the thionothiolic acid and calcium Titanium ore quantum dot performance bring influences.Preferably, the amount ratio of IA race metal halide and the alkene solvent is 0.01-1g:1ml, to guarantee that IA race metal halide has preferable solute effect.
It dissolves after IA race metal halide, alkene solvent and thionothiolic acid are mixed, is preferably performed under heating conditions Dissolution, heating temperature are lower than 130 DEG C.Further, after being heated to 130-160 DEG C, reaction 0.1-24 hours under an inert atmosphere, It is not oxidized for the first presoma of protection, it is cooled to 80-100 DEG C, constant temperature 4-6 hours, prepares the first presoma.Wherein, described Inert atmosphere includes but is not limited to nitrogen atmosphere.
In above-mentioned steps S012, the lead halide is at least one of lead chloride, lead bromide, lead iodide.The alkene is molten Agent is as dissolution solvent, the preferably long-chain olefin of carbon atom > 12.It is particularly preferred as that there is compared with good dissolving the lead halide The octadecylene of property.Lead halide is dissolved in alkene solvent, it is preferred that the amount ratio of the lead halide and the alkene solvent is 0.01~1mol:1L.To prevent the second presoma from aoxidizing, reacts 1-3 hours, further, be added under vacuum conditions Thionothiolic acid and oleyl amine are heated to 1-100 minutes the second presomas of preparation of 140-220 DEG C of reaction, and temperature is excessively high to will cause quantum dot Surface ligand is oxidized;Temperature, which crosses low reaction, to be occurred.
In above-mentioned steps S013, under 140-220 DEG C of constant temperature, first presoma and the second forerunner are mixed Body stablizes reaction so as to the two and generates uniform and stable perovskite quantum dot.Cooling treatment after reaction, then using organic Solvent crystallization.Preferably, the organic solvent is benzene kind solvent, specific preferred, and the organic solvent is toluene.Using toluene As crystallization solvent, the perovskite quantum dot for having both high-purity and high yield can be obtained.Further, the dosage of the toluene 5-100% for the solution system total volume obtained after reaction.Perovskite quantum dot is obtained through centrifugation, by the perovskite quantum Point is dispersed in the solvent, obtains the quantum dot solution that concentration is 0.1-0.2g/L.
In above-mentioned steps S02, polymer monomer and photoinitiator are added in the perovskite quantum dot solution, ultraviolet Under the conditions of initiated polymerization, the perovskite quantum dot show coat branch winding polymeric layer.The embodiment of the present invention In, for react formed polymer polymer monomer be the unsaturated polymer monomer containing amino so that cladding institute It states and contains amino on the polymer of perovskite quantum dot, it is possible thereby to guarantee that the perovskite quantum dot in acid condition will not Reunite, there is excellent dispersion performance.Specifically, the polymer monomer be the carbochain polymer monomer containing amino or Heterochain polymer monomer containing amino.Specific preferred, the polymer monomer is N- (3- dimethylamino-propyl) methyl-prop Acrylamide, 4- aminostyryl, 4- dimethylaminostyrene, aziridine, α-aminoacrylic acid, a- acetylamino propylene At least one of acid, dimethylaminoethyl acrylate, it is certainly, without being limited thereto.Preferred polymer monomer not only has preferably Polymerization activity, and also there is preferable reactivity with the perovskite quantum dot, exist so as to stable bond On the perovskite quantum dot, the stable surface of forming properties coats perovskite quantum dot.
Preferably, the amount ratio of the perovskite quantum dot and the polymer monomer is 20~50g:1L.If described poly- Monomer adduct content is excessive, then the remaining polymer monomer of meeting in product, and then influences the luminous intensity and hair of perovskite quantum dot Light efficiency.
In the embodiment of the present invention, the photoinitiator under the irradiation of ultraviolet light, the unsaturated polymer list containing amino Photopolymerization reaction, and sulfydryl substitution in the amino-containing polymer and thionothiolic acid ligand of photopolymerization reaction generation occur for physical efficiency Carbon atom is connected, to form the structure of polymeric layer cladding in the perovskite quantum dot surface.Wherein, the photoinitiator Under ultraviolet irradiation, can promote the methylene that sulfydryl is connected in the thionothiolic acid ligand on the perovskite quantum dot surface or Methine loses hydrogen atom, forms radical structure, the carbon-carbon double bond being formed by radical structure oxypolymer monomer, Finally the methylene containing free radical or methine are attached with the carbon atom on carbon-carbon double bond, and polymer monomer is due to double bond It opens and polymerize and form polymer, reaction generates the amino-containing polymeric outer layer of quantum dot layer surfaces.The embodiment of the present invention In, the photoinitiator be benzoin and its derivative (such as: styrax, benzoin dimethylether, benzoin ethyl ether, styrax Isopropyl ether, benzoin isobutyl ether);Benzil class compound (such as: diphenylethan, α, alpha, alpha-dimethyl oxygroup-α-phenyl acetophenone); Benzophenone compound (such as: benzophenone, 2,4 dihydroxyl benzophenone, Michler's keton);Alkylbenzene ketone compounds (example Such as: α, α-diethoxy acetophenone, alpha-hydroxyalkyl benzophenone, α-amine alkyl phenones);Thioxanthones compound (such as thio third At least one of oxygroup thioxanthone, isopropyl thioxanthone).Preferably, the photoinitiator is benzophenone chemical combination At least one of object, such as benzophenone, 2,4-DihydroxyBenzophenone, Michler's keton.
The amount for the photoinitiator that the present invention needs to be added is less.In the embodiment of the present invention, the perovskite quantum dot and institute The amount ratio for stating photoinitiator is 80g-250g:1mol.
As a specific embodiment, the photoinitiator is benzophenone, and the benzophenone can preferably be accelerated The generation of free radical improves photopolymerization efficiency.
In the embodiment of the present invention, photopolymerization can be carried out in environment in inert atmosphere, air atmosphere, preparing for vacuum atmosphere Reaction.The water vapour content for preparing environment cannot be excessively high, excessively high that photopolymerization reaction cannot occur, in some instances it may even be possible to since hydrone is joined Impurity is introduced with other side reactions.Preferably, in the step of preparing the perovskite quantum dot of polymer overmold, environment is prepared In, vapor volume fraction is lower than 30%.The perovskite quantum dot solution, polymer monomer and the photoinitiator that will be provided After mixing, ultraviolet irradiation under conditions of water vapour content is lower than 30%.
In the embodiment of the present invention, under the conditions of ultraviolet, the sulfydryl second that has been coated on the perovskite quantum dot surface Methylene in acid loses hydrogen and forms radical structure, and then radical structure oxypolymer monomer, and it is anti-to form chain grafting It answers, it is thioacetic acid cladding, the perovskite quantum dot that outside is polymer overmold that final reaction, which generates internal,.Preferably, described Ultraviolet irradiation condition are as follows: ultraviolet light luminous intensity is 1~10mw/cm2, light application time is 0.2~2 hour.In the embodiment of the present invention, The thickness of polymeric layer can be adjusted by adjusting ultraviolet light luminous intensity and irradiation time within this range, and then obtain difference The perovskite quantum dot of luminescent color.Specifically, ultraviolet light light intensity is smaller, light application time is shorter, and clad is thin, the calcium titanium of preparation Mine quantum point grain diameter is smaller, and perovskite quantum dot emission wavelengths are shorter, and color is bluer;Ultraviolet light light intensity is bigger, when illumination Between it is longer, coat thickness, the perovskite quantum point grain diameter of preparation is bigger, and perovskite quantum dot emission wavelengths are longer, and color is more inclined It is red.
Specifically, reaction system can be poured into glass culture dish, quartz plate is covered, is irradiated under strong ultraviolet light, i.e., The perovskite quantum dot of polymer overmold can be obtained.
The preparation method of the perovskite quantum dot of polymer overmold provided in an embodiment of the present invention is matched containing thionothiolic acid class The perovskite quantum dot surface of body introduces the polymer with flexible branch winding, forms densification by Photoinitiated reactions Clad.On the one hand, contain amino in the polymer that Photoinitiated reactions generate, and perovskite quantum dot itself contains with carboxyl Thionothiolic acid class ligand, amino and carboxyl while, exist, and improve dispersibility of the perovskite quantum dot in acid or alkali environment, so that poly- Under acid, alkaline condition coagulation does not occur for the perovskite quantum dot for closing object cladding, improves the quantum of perovskite quantum dot Yield.On the other hand, fine and close clad is formed in the perovskite quantum dot surface by the polymer, can reduce hair Optical defect further increases luminous efficiency.
And the embodiment of the invention also provides a kind of perovskite amounts of polymer overmold prepared by the above method Sub- point.The perovskite quantum dot is coated with polymeric outer layer, and the polymer of the polymeric outer layer is amino-containing polymer.
The perovskite quantum dot of polymer overmold provided in an embodiment of the present invention does not occur under acid, alkaline condition Coagulation improves the quantum yield of perovskite quantum dot.And since the perovskite quantum dot surface forms fine and close clad, Emission defects are reduced, luminous efficiency is further increased.
It is illustrated combined with specific embodiments below.
Embodiment 1
A kind of preparation method of the perovskite quantum dot of polymer overmold, comprising the following steps:
S11., perovskite quantum dot is provided, 0.02g perovskite quantum dot is dispersed in 100ml n-hexane and forms perovskite Quantum dot solution, wherein the perovskite quantum dot is the perovskite quantum dot containing thionothiolic acid class ligand, and preparation method includes Following steps:
S111. three necks for taking 0.332g potassium iodide and 58ml octadecylene and 3.3ml 2 mercaptopropionic acid to be added to 100ml are burnt It in bottle, is heated 1 hour at 100 DEG C, is then warming up to 160 DEG C under nitrogen protection, reaction cooled to 100 DEG C after 0.5 hour, And 100 DEG C are kept the temperature at, prepare the first presoma;
S112. the lead iodide of 0.189mol and the octadecylene of 6ml are added in the three-neck flask of 25ml, it is true at 120 DEG C It is reacted 1 hour under empty condition.Then 0.5ml 2 mercaptopropionic acid and 0.5ml oleyl amine are rapidly added.It is all molten to lead iodide solid Reaction temperature is increased to 160 DEG C after solution, prepares the second presoma;
S113. under 160 DEG C of constant temperature, first presoma is rapidly added in second presoma, instead Cooling treatment after answering 1 minute.Under room temperature state, 300ml volumes toluene is added, solution is made to be in hypersaturated state, after standing Perovskite quantum dot crystal is collected to be dried.
S12. under magnetic agitation state, N- (the 3- dimethylamino of 0.8ml is added in the perovskite quantum dot solution Propyl) methacryl amine aqueous solution and 0.2ml concentration be 1mol/L benzophenone ethanol solution, reaction system solution is stirred It is transferred in vacuum glove box after uniformly, half is taken out in the case where ensuring glove box vapour content lower than 30% and pours into glass In glass culture dish, quartz plate is covered, luminous intensity keeps 3mw/cm in the case where light source is the high-pressure sodium lamp of 500W2Irradiation 0.5 hour, obtains The green perovskite quantum dot coated to N- (3- dimethylamino-propyl) methacrylamide polymer.
Embodiment 2
A kind of preparation method of the perovskite quantum dot of polymer overmold, comprising the following steps:
S21., perovskite quantum dot is provided, 0.035g perovskite quantum dot is dissolved in 210ml n-hexane and forms perovskite Quantum dot solution, wherein the perovskite quantum dot is the perovskite quantum dot containing thionothiolic acid class ligand, and preparation method includes Following steps:
S211. three necks for taking 0.421g cesium chloride and 35ml octadecylene and 2.5ml 2 mercaptopropionic acid to be added to 100ml are burnt It in bottle, is heated 1 hour at 130 DEG C, is then warming up to 160 DEG C under nitrogen protection, reaction cooled to 100 DEG C after 1.5 hours, And 100 DEG C are kept the temperature at, prepare the first presoma;
S212. the lead chloride of 0.164mol and the octadecylene of 4.8ml are added in the three-neck flask of 25ml, at 120 DEG C It is reacted 1 hour under vacuum condition.Then 0.8ml 2 mercaptopropionic acid and 0.6ml oleyl amine are rapidly added.Lead solid to be chlorinated is whole Reaction temperature is increased to 180 DEG C after dissolution, prepares the second presoma;
S213. under 180 DEG C of constant temperature, first presoma is rapidly added in second presoma, instead Cooling treatment after answering 15 minutes.Under room temperature state, 350ml volumes toluene is added, solution is made to be in hypersaturated state, after standing Perovskite quantum dot crystal is collected to be dried.
S22. under magnetic agitation state, the aziridine solution of 0.75ml is added in the perovskite quantum dot solution It is the ethanol solution of 1mol/L benzophenone with 0.15ml concentration, reaction system solution is transferred to vacuum glove after mixing evenly In case, half is taken out in the case where ensuring glove box vapour content lower than 30% and is poured into glass culture dish, quartz is covered Piece, in the case where light source is the high-pressure sodium lamp of 500W, luminous intensity keeps 5mw/cm2Irradiation 1 hour, obtains polyethyleneimine polymers packet The red perovskite quantum dot covered.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.

Claims (10)

1. a kind of preparation method of the perovskite quantum dot of polymer overmold, which comprises the following steps:
Perovskite quantum dot is provided, perovskite quantum dot dispersion is formed into perovskite quantum dot solution in a solvent, wherein The ligand of the perovskite quantum dot surface includes thionothiolic acid class ligand;
Polymer monomer and photoinitiator, under the conditions of ultraviolet irradiation, thionothiolic acid are added in the perovskite quantum dot solution The carbon atom that sulfydryl replaces in class ligand forms free radical and makes polymer monomer that photopolymerization occur, and polymer overmold is prepared Perovskite quantum dot, wherein the polymer monomer be the unsaturated polymer monomer containing amino.
2. the preparation method of the perovskite quantum dot of polymer overmold as described in claim 1, which is characterized in that described ultraviolet In the step of preparing the perovskite quantum dot of polymer overmold under irradiation condition, the volume fraction for preparing the vapor in environment is low In 30%.
3. the preparation method of the perovskite quantum dot of polymer overmold as described in claim 1, which is characterized in that the calcium titanium The amount ratio of mine quantum dot and the polymer monomer is 20~50g:1L.
4. the preparation method of the perovskite quantum dot of polymer overmold as described in claim 1, which is characterized in that the polymerization Object monomer is N- (3- dimethylamino-propyl) Methacrylamide, 4- aminostyryl, 4- dimethylaminostyrene, ethylene Asia At least one of amine, α-aminoacrylic acid, a- acetamidoacrylic acid and dimethylaminoethyl acrylate.
5. the preparation method of the perovskite quantum dot of polymer overmold according to any one of claims 1-4, which is characterized in that The photoinitiator is benzoin and its derivative, benzil class compound, alkylbenzene ketone compounds and thioxanthones Close at least one of object.
6. the preparation method of the perovskite quantum dot of polymer overmold as claimed in claim 5, which is characterized in that the light draws Hair agent is at least one of benzophenone, 2,4 dihydroxyl benzophenone, Michler's keton.
7. the preparation method of the perovskite quantum dot of polymer overmold according to any one of claims 1-4, which is characterized in that The ultraviolet irradiation condition are as follows: ultraviolet light luminous intensity is 1~10mw/cm2, light application time is 0.2~2 hour.
8. the preparation method of the perovskite quantum dot of polymer overmold according to any one of claims 1-4, which is characterized in that Solvent in the perovskite quantum dot solution be benzene, carbon tetrachloride, n-hexane, isooctane, toluene, methylene chloride, diphenyl ether, At least one of chloroform, dichloroethanes, carbon disulfide, hexamethylene, hexane, petroleum ether.
9. the preparation method of the perovskite quantum dot of polymer overmold according to any one of claims 1-4, which is characterized in that The amount ratio of the perovskite quantum dot and the photoinitiator is 80-250g:1mol.
10. a kind of perovskite quantum dot of polymer overmold, which is characterized in that the perovskite quantum dot is coated with outside polymer Layer, the polymer of the polymeric outer layer are amino-containing polymer.
CN201710631645.9A 2017-07-28 2017-07-28 Perovskite quantum dot of polymer overmold and preparation method thereof Pending CN109306265A (en)

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CN110511739A (en) * 2019-09-20 2019-11-29 深圳扑浪创新科技有限公司 A kind of preparation method of acrylic polymer coated quantum dots
CN110804233A (en) * 2019-09-27 2020-02-18 苏州星烁纳米科技有限公司 Perovskite quantum dot composite film and preparation method thereof
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WO2021088220A1 (en) * 2019-11-07 2021-05-14 深圳市华星光电半导体显示技术有限公司 Method for preparing perovskite film, composition for preparing perovskite film, and display device
CN110943186B (en) * 2019-11-28 2021-01-01 深圳市华星光电半导体显示技术有限公司 Perovskite patterned thin film, preparation method thereof and display device
CN110943186A (en) * 2019-11-28 2020-03-31 深圳市华星光电半导体显示技术有限公司 Perovskite patterned thin film, preparation method thereof and display device
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JP2023153161A (en) * 2019-12-25 2023-10-17 東洋インキScホールディングス株式会社 Luminescent material, luminescent material composition, luminescence conversion member, backlight unit, and liquid crystal display device
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CN112608403A (en) * 2020-11-20 2021-04-06 西安交通大学 Preparation method and application of high-stability polymer microsphere @ all-inorganic lead-halogen perovskite quantum dot
CN112608403B (en) * 2020-11-20 2022-02-22 西安交通大学 Preparation method and application of high-stability polymer microsphere @ all-inorganic lead-halogen perovskite quantum dot
WO2022107297A1 (en) * 2020-11-20 2022-05-27 シャープ株式会社 Quantum dot production method and quantum dots
CN114672315A (en) * 2020-12-25 2022-06-28 Tcl科技集团股份有限公司 Quantum dot ligand exchange method, preparation method of quantum dot film and QLED device
CN113321971A (en) * 2021-04-13 2021-08-31 北京理工大学 Photo-curing ink and preparation method thereof
CN113249113A (en) * 2021-04-27 2021-08-13 苏州大学 Perovskite quantum dot material, preparation method and application thereof
CN113249113B (en) * 2021-04-27 2022-03-11 苏州大学 Perovskite quantum dot material, preparation method and application thereof
CN114262474A (en) * 2021-08-24 2022-04-01 致晶科技(北京)有限公司 Preparation method of quantum dot composite material
CN114262474B (en) * 2021-08-24 2023-05-30 致晶科技(北京)有限公司 Preparation method of quantum dot composite material
CN115851260A (en) * 2021-09-26 2023-03-28 苏州星烁纳米科技有限公司 Quantum dot compound and preparation method thereof, quantum dot diffusion plate and preparation method thereof, and light-emitting device
CN116536042A (en) * 2023-04-28 2023-08-04 中山大学 Perovskite-polymer composite luminescent microsphere and preparation method and application thereof
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