CN106398680A - Oil-soluble blue-light quantum dot and preparation method thereof - Google Patents
Oil-soluble blue-light quantum dot and preparation method thereof Download PDFInfo
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- C09K11/58—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing copper, silver or gold
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- H10K50/115—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers comprising active inorganic nanostructures, e.g. luminescent quantum dots
Abstract
The invention provides an oil-soluble blue-light quantum dot and a preparation method thereof. The oil-soluble blue-light quantum dot comprises a water-soluble blue-light quantum dot, a water-soluble metallic nano-particle layer coating the surface of the water-soluble blue-light quantum dot, and an oil-soluble ligand layer formed on the surface of the water-soluble metallic nano-particle layer. The preparation method comprises the following steps: providing a mixed solution of the water-soluble blue-light quantum dot and water-soluble metallic nano-particles, adjusting a pH value to 7 to 10, subjecting the obtained mixed solution to intense agitation and carrying out a reaction at a room temperature for 3 to 10 h so as to obtain the water-soluble blue-light quantum dot coated by the metallic nano-particles; and providing an oil-soluble surface modifying agent containing a mercapto group, dissolving and mixing the water-soluble blue-light quantum dot coated by the metallic nano-particles and the oil-soluble surface modifying agent containing the mercapto group, and carrying out heat treatment in an inert atmosphere so as to obtain the oil-soluble blue-light quantum dot.
Description
Technical field
The invention belongs to quantum dot synthesis technical field, more particularly, to a kind of oil-soluble blue light quantum point and its preparation side
Method.
Background technology
In following display technology field, quantum dot shows the concern enjoying people, because its half-peak width, fluorescence are strong
Degree is high, good stability the advantages of promoted the research boom of researcher, but the trichroism quantum dot of RGB (RGB) will be thought of as
For new display material of future generation, itself must have preferable fluorescence intensity and stability and longer life-span.
In quantum dot light emitting device (QLED), the device efficiency of HONGGUANG and green glow and life-span can meet display
Demand is it is already possible to compare favourably with Organic Light Emitting Diode (OLED).However, blue light quantum point device is in existing long wave band
(458-465nm) do not possess higher current efficiency and preferable device lifetime.With regard to blue light quantum point material itself, higher
Fluorescence quantum yield also compare difficult exploitation with preferable fluorescence lifetime.At present, exploitation have the sub- yield of higher amount with more long-lived
Life and the high quantum dot of stability are generally set about from the structure of quantum dot, and commonly used method is in the life of quantum dot core surface
The passive shell of the long slice width band gap material formation such as such as ZnS, ZnSe.Electron hole can be limited in shell by passive shell well
Interior, thus improving the fluorescence intensity of quantum dot.For blue light quantum point, due to its luminous greater band gap, it is prepared into device
Afterwards, the bright voltage required for quantum dot is larger, and therefore under larger voltage, the electric field intensity residing for quantum dot is also larger,
So both it had been unfavorable for the effectively compound of electron hole, and be also unfavorable for extending the life-span of device.
Content of the invention
It is an object of the invention to provide a kind of oil-soluble blue light quantum point and preparation method thereof is it is intended to solve existing indigo plant
Light quanta point is in the problem that long wave band (458-465nm) current efficiency is high, the life-span is not grown.
The present invention is achieved in that a kind of oil-soluble blue light quantum point, including water solublity blue light quantum point, is wrapped in institute
State the water-soluble metal nano-particle layer on water solublity blue light quantum point surface, and be formed at described water-soluble metal nano-particle
The oil-soluble ligand layer of layer surface.
And, a kind of preparation method of oil-soluble blue light quantum point, comprise the following steps：
The mixed solution of water solublity blue light quantum point and water-soluble metal nano-particle is provided, adjusts pH value to 7-10, right
Described mixed solution strong stirring, after room temperature reaction 3-10h, obtains the water solublity blue light amount being coated with metal nanoparticle
Sub- point；
There is provided oil soluble, surface modified dose containing sulfydryl, by the described water solublity indigo plant being coated with metal nanoparticle
After light quanta point and the described oil soluble, surface modified dose of dissolving mixing containing sulfydryl, carry out heat treated under an inert atmosphere,
Obtain oil-soluble quantum dot.
Oil-soluble blue light quantum point that the present invention provides and preparation method thereof, by the part end in aqueous phase blue light quantum point
After terminal modified one layer of water-soluble metal nano-particle, then join in described water-soluble metal nano grain surface one layer of oleophylic of modification
Body, obtains oil-soluble blue light quantum point.Thus obtained oil-soluble blue light quantum point can strengthen quantum dot fluorescence intensity and longevity
Life, solves the problems, such as that blue-light device is inefficient, the life-span is not long.Specifically,
Firstly, since described water-soluble metal nano-particle has plasma resonance effect, and its conduction band and valence band are
Separate, therefore, it can make it have fluorescence peak in 365-450nm wave band by the size regulating and controlling described metal nanoparticle.
The oil-soluble blue light quantum point being consequently formed, acts not only as blue light display material and uses, and blue to described oil-soluble
When light quanta point carries out electroexcitation, blue light quantum point therein is except accepting to be derived from the energy of electroexcitation, being stimulated
Penetrating outer, the energy from metal nanoparticle transmitting after absorbing electroexcitation energy can also being received, thus being subject to further
Excite and penetrate, thus enhancing fluorescence intensity.
Secondly, described water-soluble metal nano-particle such as gold nano grain stability is high, is difficult oxidized, therefore, by institute
The stability stating the quantum dot after water-soluble metal nano-particle parcel is further enhanced.
Additionally, blue light quantum point is after being prepared into QLED device, generally when current efficiency is maximum, the electricity residing for quantum dot
Field intensity is larger with respect to red green quantum dot, and this is unfavorable for the prolongation of QLED device lifetime.Using single-layer metal nano-particle bag
Quantum dot after wrapping up in, itself has certain screen effect to electric field, can effectively reduce the injection barrier of electron hole, carry simultaneously
The life-span of high QLED device.Blue-light device efficiency can be solved using a kind of this quantum dot fluorescence intensity that strengthens with the method in life-span
The problems such as not high, life-span is long.
Brief description
Fig. 1 is the preparation method flow chart of oil-soluble blue light quantum point provided in an embodiment of the present invention；
Fig. 2 is the step design sketch preparing oil-soluble blue light quantum point that the embodiment of the present invention 1 provides.
Specific embodiment
In order that the technical problem to be solved in the present invention, technical scheme and beneficial effect become more apparent, 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 in order to explain
The present invention, is not intended to limit the present invention.
Embodiments provide a kind of oil-soluble blue light quantum point, described oil-soluble blue light quantum point is by said method
Prepare, including water solublity blue light quantum point, be wrapped in the water-soluble metal nanometer on described water solublity blue light quantum point surface
Granular layer, and it is formed at the oil-soluble ligand layer of described water-soluble metal nano-particle layer surface.
Specifically, described water solublity blue light quantum point includes quantum dot and has the surface ligand of parents' effect, wherein, institute
Stating quantum dot is Binary-phase quantum dot, ternary phase quantum dot or quaternary phase quantum dot, wherein, described Binary-phase quantum dot include but
Be not limited at least one in CdS, CdSe, CdTe, InP, AgS, PbS, PbSe, HgS, described ternary phase quantum dot include but not
It is limited to ZnXCd1-XS、CuXIn1-XS、ZnXCd1-XSe、ZnXSe1-XS、ZnXCd1-XTe、PbSeXS1-XIn at least one, described four
First phase quantum dot includes but is not limited to ZnXCd1-XS/ZnSe、CuXIn1-XS/ZnS、ZnXCd1-XSe/ZnS、CuInSeS、ZnXCd1- XTe/ZnS、PbSeXS1-XAt least one in/ZnS, wherein, 0<X<1；Described surface ligand includes TGA (TGA), sulfydryl
Propanoic acid (MPA), mercaptohexanoic acid (MHA), sulfydryl octanoic acid (MOA), Mercaptoundecanoic acid (MUA), 2- sulfydryl -5- benzimidazole carboxylic acid
(MBIA), at least one in 4- mercaptobenzoic acid (4-MBA).
Preferably, the metal nanoparticle for the embodiment of the present invention should possess water-soluble character, so as with described and water
The compatibility of solube metallic nano-particle preferably, is conducive to the carrying out reacting.Further, water solublity described in the embodiment of the present invention
Metal nanoparticle should have fluorescence peak in 300-450nm wave band, thus producing energy after electroexcitation, promotes blue light further
Quantum dot stimulated emission, increases fluorescence intensity.Preferably, described water-soluble metal nano-particle is gold nano grain, silver nanoparticle
At least one in granule, copper nano particles.Further, the embodiment of the present invention is passed through to adjust described water-soluble metal nanometer
The particle diameter of granule, to meet above-mentioned requirements.Specifically, the particle diameter of described water-soluble metal nano-particle is 1-3nm.
Oil-soluble blue light quantum point described in the embodiment of the present invention can be prepared by following methods.
And, the embodiment of the present invention additionally provides a kind of preparation method of oil-soluble blue light quantum point, comprises the following steps,
Its flow chart is as shown in Figure 1：
S01., the mixed solution of water solublity blue light quantum point and water-soluble metal nano-particle, regulation pH value to 7- are provided
10, to described mixed solution strong stirring, after room temperature reaction 3-10h, obtain the water solublity being coated with metal nanoparticle
Blue light quantum point；
S02., containing sulfydryl oil soluble, surface modified dose is provided, is coated with the water-soluble of metal nanoparticle by described
Property blue light quantum point and described containing sulfydryl oil soluble, surface modified dose dissolving mixing after, carry out under an inert atmosphere at heating
Reason, obtains oil-soluble quantum dot.
Because water-soluble quantum dot is not suitable as display material such as QLED luminescent material, and the blue light quantum point tool of routine
The shortcoming that standby fluorescence efficiency is not high, the life-span is not grown, accordingly, it would be desirable to be modified to water solublity blue light quantum point.
Specifically, in above-mentioned steps S01, in the basic conditions by described water solublity blue light quantum point and described water solublity gold
After metal nano-particle is mixed, room temperature can generate the water solublity blue light quantum point being coated with metal nanoparticle.
In the embodiment of the present invention, described water-soluble metal nano-particle in the basic conditions with described water solublity blue light quantum
The polar group such as carboxylic-bond on point surface, specifically, the pH value range of described alkalescence condition is 7-10.If pH is too low, shape
Become sour environment it is impossible to there is corresponding reaction；If alkalescence is too strong, there is side reaction in metal nanoparticle and base, and impact is anti-
Answer efficiency and product purity.In order to improve reaction efficiency, reacted under conditions of strong stirring, room temperature reaction 3-10h, with
Ensure that the part on described water solublity blue light quantum point is fully combined with described water-soluble metal nano-particle.
It is further preferred that in the step of water solublity blue light quantum point being coated with metal nanoparticle, described
The amount ratio of water solublity blue light quantum point and water-soluble metal nano-particle is 1g：15-30mmol.This preferred ratio is permissible
On the premise of improving reaction efficiency, it is to avoid raw material wastes the increase of the production cost leading in a large number.
In above-mentioned steps S02, by oil-soluble is bonded on the water solublity blue light quantum point be enclosed with metal nanoparticle
Coating material, finally gives oil-soluble blue light quantum point.
The embodiment of the present invention, in order to ensure the stability of oil-soluble blue light quantum point obtaining, selects the oil soluble containing sulfydryl
Property coating material, the binding ability of described sulfydryl and nano-metal particle is strong, difficult for drop-off, thus ensure that stablizing of product
Property.In this step, when in the described molecular structure containing oil soluble, surface modified dose of sulfydryl, sulfydryl is more, molecular structure is relatively
Complexity, containing sulfydryl oil soluble, surface modified a dose can be combined with multiple metal nanoparticles, thus leading to blue light amount
The oil soluble, surface modified agent content relative reduction of son point surface bond, the oil-soluble of the product that impact obtains.Preferably, described
Containing sulfydryl oil soluble, surface modified dose is to comprise only a sulfydryl in straight chain molecule, and molecular structure.And in order to ensure oil
Dissolubility, in the described molecule containing oil soluble, surface modified dose of sulfydryl, carbon atom number >=8.Further, described contain mercapto
In oil soluble, surface modified dose of base, described sulfydryl is terminal sulfhydryl group.Thus, it is possible to reduce the described oil-soluble table containing sulfydryl
It is sterically hindered that face is repaiied, and then reduces the difficulty of reaction, it is to avoid surface ligand combines insufficient phenomenon.
Specifically preferred, the described oil soluble, surface modified dose of including but not limited to eight mercaptan { CH containing sulfydryl3(CH2)7HS }, lauryl mercaptan { CH3(CH2)11HS }, stearylmercaptan { CH3(CH2)17HS }, tetradecanylthioalcohol { CH3(CH2)13HS }, decyl mercaptan
{CH3(CH2)9HS } at least one.
In above-mentioned steps, the temperature of described heat treated is 60-150 DEG C, and heat time heating time is 1-5h.If temperature is too low or adds
The hot time is too short, leads to react insufficient, the oil-soluble of blue light quantum point is limited；If temperature is too high or heat time heating time is long,
The part combine is easily caused on blue light quantum point come off.
In order to improve reaction efficiency it is preferred that in the step preparing oil-soluble quantum dot, described it is coated with metal
The mass ratio of the water solublity blue light quantum point of nano-particle and described containing sulfydryl oil soluble, surface modified dose is 1：50-100.
In order to avoid the generation of side reaction, each step of the embodiment of the present invention is preferably carried out under an inert atmosphere, described inertia
Atmosphere includes but is not limited to argon, nitrogen, helium.
The preparation method of oil-soluble blue light quantum point provided in an embodiment of the present invention, by joining in aqueous phase blue light quantum point
After the end modified one layer of water-soluble metal nano-particle of body, then modify one layer of oleophylic in described water-soluble metal nano grain surface
Part, obtains oil-soluble blue light quantum point.Thus obtained oil-soluble blue light quantum point can strengthen quantum dot fluorescence intensity with
In the life-span, solve the problems, such as that blue-light device is inefficient, the life-span is not long.Specifically,
Firstly, since described water-soluble metal nano-particle has plasma resonance effect, and its conduction band and valence band are
Separate, therefore, it can make it have fluorescence peak in 365-450nm wave band by the size regulating and controlling described metal nanoparticle.
The oil-soluble blue light quantum point being consequently formed, acts not only as blue light display material and uses, and blue to described oil-soluble
When light quanta point carries out electroexcitation, blue light quantum point therein is except accepting to be derived from the energy of electroexcitation, being stimulated
Penetrating outer, the energy from metal nanoparticle transmitting after absorbing electroexcitation energy can also being received, thus being subject to further
Excite and penetrate, thus enhancing fluorescence intensity.
Secondly, described water-soluble metal nano-particle such as gold nano grain stability is high, is difficult oxidized, therefore, by institute
The stability stating the quantum dot after water-soluble metal nano-particle parcel is further enhanced.
Additionally, blue light quantum point is after being prepared into QLED device, generally when current efficiency is maximum, the electricity residing for quantum dot
Field intensity is larger with respect to red green quantum dot, and this is unfavorable for the prolongation of QLED device lifetime.Using single-layer metal nano-particle bag
Quantum dot after wrapping up in, itself has certain screen effect to electric field, can effectively reduce the injection barrier of electron hole, carry simultaneously
The life-span of high QLED device.Blue-light device efficiency can be solved using a kind of this quantum dot fluorescence intensity that strengthens with the method in life-span
The problems such as not high, life-span is long.
Illustrate with reference to specific embodiment.
Embodiment 1
A kind of preparation method of oil-soluble blue light quantum point, comprises the following steps, its flow chart is as shown in Figure 1：
S11. blue light (ZnCdS/ZnS) water-soluble quantum dot (30mg/ml) 20ul that surface contains TGA and water are taken
Dissolubility gold (Au) nano-particle (10mg/ml) 3ml is added in the there-necked flask of 50ml, and logical argon is protected, stirring at normal temperature
To adjust the pH value of mixed liquor after 10min again toward Deca NaHCO3 aqueous solution in mixed liquor, to stop Deca when pH value is 9.
Then strong stirring 3h is carried out to mixed liquor, treat gold nano grain fully and quantum dot surface carboxylic ions (- COO-) with from
After the form of sub-key is combined into (- COOAu), then to quantum dot mixed liquor add ethyl acetate carry out high speed centrifugation obtain periphery bag
It is wrapped with the blue light quantum point of single layer of gold (Au) nano-particle, then will be centrifuged standby.
Wherein, described gold nano grain can be prepared by following methods：Under the conditions of oil bath, to the three of 100ml
The water of 60ml and the hydration HAuCl of the 1% of 1ml is added in mouth flask4·3H2O, is sufficiently stirred under conditions of the protection of logical argon.
After crossing 1min, add the 1% of 1ml citric acid monohydrate sodium.After adding 1min, add the 0.075%NaBH of 1ml4, will be molten
Liquid is stirred continuously 5min, obtain gold nano grain using size Selection method filter out size in 1nm about and emission peak in (365-
450nm) interval gold nano grain, (4 DEG C about) preservations of the sample lucifuge low temperature obtaining.
S12. take the above-mentioned gold nano grain being enclosed with monolayer preparing water solublity blue light quantum point 30ml and dissolved with
The hexane solution 20ml of lauryl mercaptan is added to logical argon protection in the there-necked flask of 100ml, is then heated to mixed liquor
60 DEG C and mixed liquor is quickly stirred when obvious lamination in mixed liquor, be stirred for 1h so that lauryl mercaptan
Fully be combined and then realized phase transformation, each step design sketch such as Fig. 2 institute of the embodiment of the present invention with golden (Au) nano-particle
Show.
Embodiment 2
S21. blue light (ZnCdS/ZnS) water-soluble quantum dot (30mg/ml) 20ul that surface contains TGA and water are taken
Dissolubility silver (Ag) nano-particle (10mg/ml) 5ml is added in the there-necked flask of 50ml, and logical argon is protected, stirring at normal temperature
Again toward Deca NaHCO in mixed liquor after 10min3Aqueous solution, to adjust the pH value of mixed liquor, stops Deca when pH value is 9.
Then strong stirring 3h is carried out to mixed liquor, treat gold nano grain fully and quantum dot surface carboxylic ions (- COO-) with from
After the form of sub-key is combined into (- COOAg), then to quantum dot mixed liquor add ethyl acetate carry out high speed centrifugation obtain periphery bag
It is wrapped with the blue light quantum point of single silver (Ag) nano-particle, then will be centrifuged standby.
Wherein, described silver nano-grain can be prepared by following methods：Under the conditions of oil bath, to the three of 100ml
The ethyl acetate of 20ml and the Ag (NO of the 0.01mmol of 1ml is added in mouth flask3)2, it is sufficiently stirred under conditions of 50 DEG C of heating
After 60min.Until yellow solution occurs showing that Ag nano-particle starts to gradually form.Sample lucifuge low temperature (the 4 DEG C of left sides obtaining
Right) preserve.
S22. take the above-mentioned silver nano-grain being enclosed with monolayer preparing water solublity blue light quantum point 30ml and dissolved with
The hexane solution 20ml of lauryl mercaptan is added to logical argon protection in the there-necked flask of 100ml, is then heated to mixed liquor
60 DEG C and mixed liquor is quickly stirred when obvious lamination in mixed liquor, be stirred for 1h so that lauryl mercaptan
Fully be combined and then realized phase transformation with silver-colored (Ag) nano-particle.
Embodiment 3
S31. blue light (ZnCdS/ZnS) water-soluble quantum dot (30mg/ml) 20ul that surface contains TGA and water are taken
Dissolubility copper (Cu) nano-particle (10mg/ml) 8ml is added in the there-necked flask of 50ml, and logical argon is protected, stirring at normal temperature
Again toward Deca NaHCO in mixed liquor after 10min3Aqueous solution, to adjust the pH value of mixed liquor, stops Deca when pH value is 9.
Then strong stirring 3h is carried out to mixed liquor, treat gold nano grain fully and quantum dot surface carboxylic ions (- COO-) with from
After the form of sub-key is combined into (- COOCu), then to quantum dot mixed liquor add ethyl acetate carry out high speed centrifugation obtain periphery bag
It is wrapped with the blue light quantum point of monolayer copper (Cu) nano-particle, then will be centrifuged standby.
Wherein, described copper nano particles can be prepared by following methods：Prepare the acetic acid copper water of 5mmol/L respectively
Solution, the hydrazine hydrate aqueous solution of 50mmol/L, 15mmol/L (O, O ')-bis--n-hexadecyl phosphordithiic acid benzole soln
(extractant), at room temperature, isopyknic acetic acid copper liquor is added rapidly in hydrazine hydrate aqueous solution, strong mixing, instead
After answering 1 minute, isopyknic extractant is added in above-mentioned reaction system, stirs 1 hour at room temperature, stand 4 hours, point
Go out organic faciess, filter, solvent evaporated at 90 DEG C, plus 200ml acetone, stirring, there are a large amount of brown precipitates to produce, be aged 24 hours,
Filter, cleaned in three times with 100ml acetone, be dried, obtain brown powder body and be product.Sample lucifuge low temperature (the 4 DEG C of left sides obtaining
Right) preserve.
S32. take the above-mentioned copper nano particles being enclosed with monolayer preparing water solublity blue light quantum point 30ml and dissolved with
The hexane solution 20ml of lauryl mercaptan is added to logical argon protection in the there-necked flask of 100ml, is then heated to mixed liquor
60 DEG C and mixed liquor is quickly stirred when obvious lamination in mixed liquor, be stirred for 1h so that lauryl mercaptan
Fully be combined and then realized phase transformation with copper (Cu) nano-particle.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of oil-soluble blue light quantum point, it is characterised in that including water solublity blue light quantum point, is wrapped in described water solublity blue
The water-soluble metal nano-particle layer on light quanta point surface, and it is formed at the oil of described water-soluble metal nano-particle layer surface
Soluble ligand layer.
2. oil-soluble blue light quantum point as claimed in claim 1 is it is characterised in that the grain of described water-soluble metal nano-particle
Footpath is 1-3nm, and described water-soluble metal nano-particle has fluorescence peak in 300-450nm wave band.
3. oil-soluble blue light quantum point as claimed in claim 2 is it is characterised in that described water-soluble metal nano-particle is gold
At least one in nano-particle, silver nano-grain, copper nano particles.
4. described oil-soluble blue light quantum point as arbitrary in claim 1-3 is it is characterised in that described water solublity blue light quantum point
Including quantum dot and the surface ligand with parents' effect, wherein, described quantum dot is Binary-phase quantum dot, ternary phase quantum dot
Or quaternary phase quantum dot, wherein, described Binary-phase quantum dot is included in CdS, CdSe, CdTe, InP, AgS, PbS, PbSe, HgS
At least one, described ternary phase quantum dot includes ZnXCd1-XS、CuXIn1-XS、ZnXCd1-XSe、ZnXSe1-XS、ZnXCd1-XTe、
PbSeXS1-XIn at least one, described quaternary phase quantum dot includes but is not limited to ZnXCd1-XS/ZnSe、CuXIn1-XS/ZnS、
ZnXCd1-XSe/ZnS、CuInSeS、ZnXCd1-XTe/ZnS、PbSeXS1-XAt least one in/ZnS, wherein, 0<X<1；
Described surface ligand include TGA, mercaptopropionic acid, mercaptohexanoic acid, sulfydryl octanoic acid, Mercaptoundecanoic acid, 2- sulfydryl-
At least one in 5- benzimidazole carboxylic acid, 4- mercaptobenzoic acid.
5. the preparation method of the oil-soluble blue light quantum point as described in any one of claim 1-4 is it is characterised in that methods described
Comprise the following steps：
The mixed solution of water solublity blue light quantum point and water-soluble metal nano-particle is provided, adjusts pH value to 7-10, to described
Mixed solution strong stirring, after room temperature reaction 3-10h, obtains the water solublity blue light quantum being coated with metal nanoparticle
Point；
There is provided oil soluble, surface modified dose containing sulfydryl, by the described water solublity blue light amount being coated with metal nanoparticle
After son point and the described oil soluble, surface modified dose of dissolving mixing containing sulfydryl, carry out heat treated under an inert atmosphere, obtain
Oil-soluble quantum dot.
6. the preparation method of oil-soluble blue light quantum point as claimed in claim 5 is it is characterised in that the described oil containing sulfydryl
Dissolubility coating material is to comprise only a sulfydryl in straight chain molecule, and molecular structure.
7. the preparation method of oil-soluble blue light quantum point as claimed in claim 6 is it is characterised in that the described oil containing sulfydryl
In dissolubility coating material, described sulfydryl is terminal sulfhydryl group.
8. the preparation method of oil-soluble blue light quantum point as claimed in claim 6 is it is characterised in that the described oil containing sulfydryl
Dissolubility coating material includes eight mercaptan, lauryl mercaptan, stearylmercaptan, tetradecanylthioalcohol, at least one in decyl mercaptan.
9. the preparation method of oil-soluble blue light quantum point as claimed in claim 5 is it is characterised in that the temperature of described heat treated
Spend for 60-150 DEG C, heat time heating time is 1-5h.
10. the preparation method of oil-soluble blue light quantum point as claimed in claim 5 is it is characterised in that be coated with gold
In the step of water solublity blue light quantum point of metal nano-particle, described water solublity blue light quantum point and water-soluble metal nano-particle
Amount ratio be 1g：15-30mmol；And/or
In the step preparing oil-soluble quantum dot, the described water solublity blue light quantum point being coated with metal nanoparticle and
Described containing sulfydryl oil soluble, surface modified dose of mass ratio is 1：50-100.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106398686A (en) * | 2016-09-05 | 2017-02-15 | Tcl集团股份有限公司 | Quantum dot and preparation method thereof |
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| WO2020134157A1 (en) * | 2018-12-28 | 2020-07-02 | Tcl科技集团股份有限公司 | Quantum dot light-emitting diode and preparation method therefor |
| CN112745851A (en) * | 2019-10-30 | 2021-05-04 | Tcl集团股份有限公司 | Composite nano-particles and preparation method and application thereof |
| JP2021125492A (en) * | 2020-01-31 | 2021-08-30 | キヤノン株式会社 | Semiconductor device, display device, imaging system, and mobile object |
| CN112008093A (en) * | 2020-09-01 | 2020-12-01 | 吉林大学 | Quantum dot-gold nanoparticle heterogeneous superlattice and preparation method and application thereof |
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