CN108467725A - A kind of Au-CsPbX3/ PMMA nanocomposites and preparation method thereof - Google Patents

A kind of Au-CsPbX3/ PMMA nanocomposites and preparation method thereof Download PDF

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CN108467725A
CN108467725A CN201810275569.7A CN201810275569A CN108467725A CN 108467725 A CN108467725 A CN 108467725A CN 201810275569 A CN201810275569 A CN 201810275569A CN 108467725 A CN108467725 A CN 108467725A
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nanocrystalline
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pmma
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杨昕宇
闫小莲
郭珊珊
刘海涛
徐秦
卢雪
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Wenzhou University
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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y40/00—Manufacture or treatment of nanostructures
    • 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
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/66—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing germanium, tin or lead
    • C09K11/664—Halogenides
    • C09K11/665—Halogenides with alkali or alkaline earth metals
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/35—Non-linear optics
    • G02F1/355—Non-linear optics characterised by the materials used
    • G02F1/361—Organic materials
    • G02F1/3615—Organic materials containing polymers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/106—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity
    • H01S3/1061—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity using a variable absorption device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/11—Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping
    • H01S3/1106—Mode locking
    • H01S3/1112—Passive mode locking
    • H01S3/1115—Passive mode locking using intracavity saturable absorbers

Abstract

The present invention relates to a kind of Au CsPbX3/ PMMA nanocomposites and preparation method thereof, comprise the following steps：(1) the adjustable CsPbX of visible light bandgap3Nanocrystalline synthesis；(2) Au nano particles and CsPbX3Nanocrystalline effective hydridization；(3)Au‑CsPbX3Nanocrystalline fiber optic communication wave band absorbs the adjusting of band gap；(4)Au‑CsPbX3It is nanocrystalline effective compound between PMMA, obtain Au CsPbX3/ PMMA nanocomposites；The beneficial effects of the invention are as follows：(1) the full-inorganic perovskite CsPbX of the material system core3(X=Cl, Br, I) is nanocrystalline to possess good non-linear saturated absorption characteristic；(2)Au‑CsPbX3(X=Cl, Br, I) is nanocrystalline in the potential researching value of fiber optic communication wave band；(3)Au‑CsPbX3Great potential of (X=Cl, Br, I)/PMMA nanocomposites as saturable absorber (SA).

Description

A kind of Au-CsPbX3/ PMMA nanocomposites and preparation method thereof
Technical field
The present invention relates to CsPbX3The preparation method and Au-CsPbX of nano material3The preparation method of nano material.
Background technology
Ultrashort pulse laser is due to its ultrashort temporal resolution, larger light pulse peak and higher repetition frequency Rate so that ultrashort pulse laser shows considerable Research Prospects in high speed optical communication, high-precision material processing field. And one of the method for generating ultra-short pulse laser mainstream technology is exactly to utilize saturable absorber (Saturation Absorption, SA) --- one kind has the light modulating materials of non-linear saturated absorption characteristic.It only needs to be made into very little Structure be inserted into laser resonance cavity and can carry out adjusting Q or mode locking to generate pulse laser, and be not necessarily to introduce in the process Any costly and complicated electric drive adjuster.And the research core objective of saturable absorber (SA) is exactly to seek suitably Saturable absorber (SA) is for generating ultra-short pulse laser of good performance.
Recently, it is dense emerging that absorption spectrum nanocrystalline Wu etc. is shown on Science Au-CdSe causes us Interesting (material is not used for saturable absorber and is studied).We pay particular attention to, this is nanocrystalline (to prolong near infrared band Extending to 1450nm) there are one significant characteristic broad absorption band peaks for tool.If the plasma free electron in Au nano particles thinks reality Now transit to the target of semiconductor nano conduction band, there are one important requirement be exactly Au nano particles fermi level with The energy level difference of semiconductor conduction band wants sufficiently small, to realize this transition process, therefore, Au nano particles and semiconductor nano Between band-gap degree it is just very crucial.
In view of full-inorganic perovskite CsPbX3(X=Cl, Br, I) is nanocrystalline with the absorption cross-section area of bigger, smaller Defect concentration, lower Auger recombination probabilities, this imply that good non-linear saturated absorption performance.And Li and Zhou are most Closely utilize full-inorganic CsPbBr3It is nanocrystalline that saturable absorber (SA) is used as successfully to realize ultra-short pulse laser output, more Directly illustrate such nanocrystalline great potential as saturable absorber (SA) candidate material.And full-inorganic perovskite CsPbX3(X=Cl, Br, I) is nanocrystalline to be possessed the band gap width that can cover entire visible-range (400-700nm) and passes through Displacement can be realized the band gap within the scope of total visible light and adjust between simple halogen (Cl, Br, I).So, it is only necessary to pass through The control of Au nanoparticle sizes and CsPbX3It is replaced between (X=Cl, Br, I) nanocrystalline halogen, you can realize the two band gap position It sets and the best match of energy level difference, to realize the electron transition absorption process in fiber optic communication wave band band gap.Therefore, Au- CsPbX3(X=Cl, Br, I) nanocrystalline research in fiber optic communication wave band is worthy of expecting.
Invention content
The present invention in order to overcome the disadvantages and deficiencies of the prior art, and provides a kind of Au-CsPbX3The nano combined materials of/PMMA Material, which shows stronger wide band absorption effect in fiber optic communication wave band, is such nano material as saturable absorption Body (SA) can generate the essential condition of ultra-short pulse laser in fiber optic communication wave band.
Second object of the present invention is to provide a kind of Au-CsPbX3The preparation method of/PMMA nanocomposites.
For the purpose for realizing above-mentioned, technical scheme is as follows：
A kind of Au-CsPbX3The preparation method of/PMMA nanocomposites, comprises the following steps：
1. completing the adjustable CsPbX of band gap in visible-range3(X=Cl, Br, I) nanocrystalline synthesis；
(1) synthesis of oleic acid caesium：Weigh 0.1-0.2g CsCO3, octadecylene and oleic acid is put into the three-necked flask of 100ml, First vacuumize, after be warming up to that the reaction was complete under the protection of nitrogen, generate oleic acid caesium；
(2)CsPbX3Synthesis：Weigh 0.2-0.25g PbX2It is placed in three-necked flask, octadecylene is added afterwards, before heating It first vacuumizes, logical nitrogen is simultaneously warming up to 120 DEG C, rear to inject oleic acid and oleyl amine, is warming up to 140 DEG C -200 DEG C to change crystal grain Size, the oleic acid caesium of the 0.125mol in (1) is rapidly injected；
(3) product in (2) is centrifuged, is dispersed in spare in n-hexane；
(4) select the three primary colours perovskite that quality is good in (3) and pattern, size are similar nanocrystalline, according to being allocated Mixing, it is nanocrystalline by the perovskite for replacing other colour systems within the scope of acquisition visible region between halogen, realize arbitrary visible band Gap is adjustable CsPbX3The synthesis of serial nano crystalline substance.
2.Au nano particles and CsPbX3Nanocrystalline effective hydridization；
(1) preparation of Au nano particles presoma：Select AuCl3As Au nano particle presomas, 20mg-40mg is weighed AuCl3It prepares various sizes of Au nano particles, measures 0.2ml absolute ethyl alcohols, 2ml toluene seals for use in beaker；
(2)PbX2The preparation of presoma：Weigh 0.2-0.25g PbX2It is placed in three-necked flask, octadecylene is added afterwards, rise Wen Qianxian is vacuumized, and logical nitrogen is simultaneously warming up to PbX2It is completely dissolved；
(3)Au-CsPbX3Preparation：The Au precursor solution 1ml for taking (1) to prepare, rear that 1.5ml toluene is added, oleic acid is dilute It releases, and the 300-400 μ L PbBr of (2) preparation is added2Precursor solution is eventually adding the CsPbX synthesized in (1)3In, fully stir It mixes, centrifuges, be dispersed in n-hexane.
3.Au-CsPbX3Nanocrystalline fiber optic communication wave band absorbs the adjusting of band gap；
(1) change AuCl3Or AuBr3Concentration, control the size of formed Au nano particles, and then adjusting Au nanometers The LSPR of grain absorbs band gap and CsPbX3Nanocrystalline absorption band gap matches；
(2) pass through CsPbBr3, CsPbCl3, CsPbI3Halogen is replaced between serial nano crystalline substance, adjusts the nanocrystalline suction of perovskite Take-up gap absorbs band gap with Au nano particles LSPR and matches.
During entirely synthesis and band gap adjust, absorbs band gap, fluorescence, crystal phase structure, pattern etc. and be required to institute in utilizing 2 Row characterization method carries out real-time tracking, absorbs the adjustable Au-CsPbX of band gap to obtain fiber optic communication wave band3(X=Cl, Br, I) Serial nano is brilliant.
4.Au-CsPbX3It is nanocrystalline effective compound between PMMA, obtain Au-CsPbX3/ PMMA nanocomposites, Include the following steps：2-3g plexiglass is weighed, by controlling Au-CsPbBr3Nanocrystalline introducing Concentration is simultaneously sufficiently stirred, cures, and forms good, the finely dispersed Au-CsPbBr of the transparency3/ PMMA nanocomposites.
In order to further enhance the stability of the material, polymethyl methacrylate is introduced The high band gap pmma material of (Polymethylmethacrylate, PMMA) this insulation, not only can be nanocrystalline to this Play the role of further protection, and the introducing of PMMA can also effectively reduce charge-mass ratio, promotes charge injection balance, this is right In Au-CsPbX3(X=Cl, Br, I) nanocrystalline electron transfer processes are extremely beneficial, this nothing exists suspected of the nanocomposite The application in the field saturable absorber (SA) provides huge possibility.
The beneficial effects of the invention are as follows：
(1) the full-inorganic perovskite CsPbX of the material system core3(X=Cl, Br, I) nanocrystalline possess it is good non-thread Property saturated absorption characteristic.
(2)Au-CsPbX3(X=Cl, Br, I) is nanocrystalline in the potential researching value of fiber optic communication wave band.
(3)Au-CsPbX3(X=Cl, Br, I)/PMMA nanocomposites are as the huge latent of saturable absorber (SA) Power.
Specific implementation mode
Below by specific embodiment, the present invention is described in detail, but the purposes of these particularization embodiments and Purpose is only used for enumerating the present invention, not constitutes any type of any restriction to the real protection scope of the present invention, more non-to incite somebody to action Protection scope of the present invention is confined to this.
Embodiment 1
The synthetic method of use：Hot method for implanting, synthetic object：Au-CsPbX3(X=Cl, Br, I)/PMMA is nano combined Material synthesizes target：The stronger sink effect of fiber optic communication wave band and band gap is adjustable.With Au-CsPbBr3/ PMMA is example into one Step is described in detail.
1. visible light bandgap is adjustable CsPbBr3Nanocrystalline synthesis step：
(1) synthesis of oleic acid caesium：Weigh 0.1g CsCO3, octadecylene (ODE) and oleic acid (OA) are put into three mouthfuls of burnings of 100ml In bottle, first vacuumize, after be warming up to that the reaction was complete under the protection of nitrogen；
(2)CsPbX3The synthesis of (X=Cl, Br, I)：Weigh 0.2g PbBr2It is placed in three-necked flask, it is rear to be added 18 Alkene first vacuumizes before heating, and logical nitrogen is simultaneously warming up to 120 DEG C, injects oleic acid (OA) and oleyl amine (OAm) afterwards, is warming up to 140 DEG C DEG C (change the size of crystal grain), is rapidly injected the oleic acid caesium of the 0.125mol in (1)；
(3) product in (2) is centrifuged, is dispersed in spare in n-hexane；It is necessary to ensure that each presoma in the process The Rational Parameters such as temperature, reaction time, the atmosphere of selection, heat injection, it is ensured that synthesized nanocrystalline pattern, size, crystalline substance The index of quality such as phase, absorption band gap, fluorescence are in shape.
(4) 3 are selected) in quality is good and pattern, size are similar three primary colours perovskite it is nanocrystalline, according to different proportion into Row allotment mixing, nanocrystalline by the perovskite for replacing other colour systems within the scope of acquisition visible region between halogen, realization arbitrarily may be used The light-exposed adjustable CsPbX of band gap3The synthesis of (X=Cl, Br, I) serial nano crystalline substance establishes material base for follow-up study.
2.Au-CsPbBr3Nanocrystalline synthetic method：
(1) preparation of Au nano particles presoma：Select AuCl3For Au nano particle presomas, 20mg is weighed AuCl3(prepare various sizes of Au nano particles), 0.2ml absolute ethyl alcohols, 2ml toluene seals for use in beaker；
(2)PbBr2The preparation of presoma：Weigh 0.2g PbBr2It is placed in three-necked flask, octadecylene is added afterwards, heat up Preceding first to vacuumize, logical nitrogen is simultaneously warming up to PbBr2It is completely dissolved；
(3)Au-CsPbBr3Preparation：The Au precursor solution 1ml for taking (1) to prepare, it is rear that 1.5ml toluene, oleic acid is added (OA) it dilutes, and 300 μ LPbBr of (2) preparation is added2Precursor solution is eventually adding the CsPbBr synthesized in (1)3In, fully Stirring, centrifugation, is dispersed in n-hexane.
3.Au-CsPbBr3Nanocrystalline fiber optic communication wave band absorbs the method that band gap is adjusted：
(1) change AuCl3Or AuBr3Concentration, control the size of formed Au nano particles, and then adjusting Au nanometers The LSPR of grain absorbs band gap and CsPbX3(X=Cl, Br, I) nanocrystalline absorption band gap matches；
(2) pass through CsPbBr3, CsPbCl3, CsPbI3Halogen is replaced between serial nano crystalline substance, adjusts the nanocrystalline suction of perovskite Take-up gap absorbs band gap with Au nano particles LSPR and matches.
4. completing Au-CsPbBr3Nanocrystalline effective compound method between PMMA：
2g PMMA organic glasses are weighed, by controlling Au-CsPbBr3Nanocrystalline introducing concentration is simultaneously sufficiently stirred, rationally Solidification forms good, the finely dispersed Au-CsPbBr of the transparency3/ PMMA nanocomposites.
Embodiment 2
The synthetic method of use：Hot method for implanting, synthetic object：Au-CsPbX3(X=Cl, Br, I)/PMMA is nano combined Material synthesizes target：The stronger sink effect of fiber optic communication wave band and band gap is adjustable.With Au-CsPbBr3/ PMMA is example into one Step is described in detail.
1. visible light bandgap is adjustable CsPbBr3Nanocrystalline synthesis step：
(1) synthesis of oleic acid caesium：Weigh 0.2g CsCO3, octadecylene (ODE) and oleic acid (OA) are put into three mouthfuls of burnings of 100ml In bottle, first vacuumize, after be warming up to that the reaction was complete under the protection of nitrogen；
(2)CsPbX3The synthesis of (X=Cl, Br, I)：Weigh 0.25g PbBr2It is placed in three-necked flask, it is rear to be added 18 Alkene first vacuumizes before heating, and logical nitrogen is simultaneously warming up to 120 DEG C, injects oleic acid (OA) and oleyl amine (OAm) afterwards, is warming up to 200 DEG C (change the size of crystal grain), is rapidly injected the oleic acid caesium of the 0.125mol in (1)；
(3) product in (2) is centrifuged, is dispersed in spare in n-hexane；It is necessary to ensure that each presoma in the process The Rational Parameters such as temperature, reaction time, the atmosphere of selection, heat injection, it is ensured that synthesized nanocrystalline pattern, size, crystalline substance The index of quality such as phase, absorption band gap, fluorescence are in shape.
(4) select the three primary colours perovskite that quality is good in (3) and pattern, size are similar nanocrystalline, according to different proportion Allotment mixing is carried out, it is nanocrystalline by the perovskite for replacing other colour systems within the scope of acquisition visible region between halogen, it realizes arbitrary Visible light bandgap is adjustable CsPbX3The synthesis of (X=Cl, Br, I) serial nano crystalline substance establishes material base for follow-up study.
2.Au-CsPbBr3Nanocrystalline synthetic method：
(1) preparation of Au nano particles presoma：Select AuCl3For Au nano particle presomas, 40mg is weighed AuCl3(prepare various sizes of Au nano particles), 0.2ml absolute ethyl alcohols, 2ml toluene seals for use in beaker；
(2)PbBr2The preparation of presoma：Weigh 0.25g PbBr2It is placed in three-necked flask, octadecylene is added afterwards, heat up Preceding first to vacuumize, logical nitrogen is simultaneously warming up to PbBr2It is completely dissolved；
(3)Au-CsPbBr3Preparation：The Au precursor solution 1ml for taking (1) to prepare, it is rear that 1.5ml toluene, oleic acid is added (OA) it dilutes, and 400 μ L PbBr of (2) preparation is added2Precursor solution is eventually adding the CsPbBr synthesized in (1)3In, it fills Stirring, centrifugation is divided to be dispersed in n-hexane.
3.Au-CsPbBr3Nanocrystalline fiber optic communication wave band absorbs the method that band gap is adjusted：
(1) change AuCl3Or AuBr3Concentration, control the size of formed Au nano particles, and then adjusting Au nanometers The LSPR of grain absorbs band gap and CsPbX3(X=Cl, Br, I) nanocrystalline absorption band gap matches；
(2) pass through CsPbBr3, CsPbCl3, CsPbI3Halogen is replaced between serial nano crystalline substance, adjusts the nanocrystalline suction of perovskite Take-up gap absorbs band gap with Au nano particles LSPR and matches.
4. completing Au-CsPbBr3Nanocrystalline effective compound method between PMMA：
3g PMMA organic glasses are weighed, by controlling Au-CsPbBr3Nanocrystalline introducing concentration is simultaneously sufficiently stirred, rationally Solidification forms good, the finely dispersed Au-CsPbBr of the transparency3/ PMMA nanocomposites.
The above disclosure is only the preferred embodiments of the present invention, cannot limit the right model of the present invention with this certainly It encloses, therefore equivalent changes made in accordance with the claims of the present invention, is still within the scope of the present invention.

Claims (6)

1. a kind of Au-CsPbX3The preparation method of/PMMA nanocomposites, which is characterized in that comprise the following steps：
(1) the adjustable CsPbX of visible light bandgap3Nanocrystalline synthesis；
(2) Au nano particles and CsPbX3Nanocrystalline effective hydridization；
(3)Au-CsPbX3Nanocrystalline fiber optic communication wave band absorbs the adjusting of band gap；
(4)Au-CsPbX3It is nanocrystalline effective compound between PMMA, obtain Au-CsPbX3/ PMMA nanocomposites, wherein X is Cl, Br, any one of I.
2. preparation method according to claim 1, which is characterized in that the visible light bandgap described in step (1) is adjustable CsPbX3Nanocrystalline synthesis step is as follows：
(1) synthesis of oleic acid caesium：Weigh 0.1-0.2g CsCO3, octadecylene and oleic acid are put into the three-necked flask of 100ml, first take out Vacuum, after be warming up to that the reaction was complete under the protection of nitrogen, generate oleic acid caesium；
(2)CsPbX3Synthesis：Weigh 0.2-0.25g PbX2It is placed in three-necked flask, octadecylene is added afterwards, is first taken out before heating Vacuum, logical nitrogen is simultaneously warming up to 120 DEG C, rear to inject oleic acid and oleyl amine, is warming up to 140 DEG C -200 DEG C to change the ruler of crystal grain It is very little, the oleic acid caesium of the 0.125mol generated in (1) is rapidly injected；
(3) product in (2) is centrifuged, is dispersed in spare in n-hexane；
(4) select the three primary colours perovskite that quality is good in (3) and pattern, size are similar nanocrystalline, according to carrying out allotment mixing, Nanocrystalline by the perovskite for replacing other colour systems within the scope of acquisition visible region between halogen, arbitrary visible light bandgap is realized in synthesis Adjustable CsPbX3The synthesis of serial nano crystalline substance.
3. according to the preparation method described in one of claim 1-2, which is characterized in that the Au nano particles described in step (2) With CsPbX3Nanocrystalline effective hydridization includes the following steps：
(1) preparation of Au nano particles presoma：Select AuCl3As Au nano particle presomas, 20mg-40mg is weighed AuCl3It prepares various sizes of Au nano particles, measures 0.2ml absolute ethyl alcohols, 2ml toluene seals for use in beaker；
(2)PbX2The preparation of presoma：Weigh 0.2-0.25g PbX2It is placed in three-necked flask, octadecylene is added afterwards, before heating It first vacuumizes, logical nitrogen is simultaneously warming up to PbX2It is completely dissolved；
(3)Au-CsPbX3Preparation：The Au precursor solution 1ml for taking (1) to prepare, rear that 1.5ml toluene is added, oleic acid dilutes, and 300-400 μ L PbBr prepared by (2) are added2Precursor solution is eventually adding the CsPbX of synthesis3In, it is sufficiently stirred, centrifuges, point It is dispersed in n-hexane.
4. according to the preparation method described in one of claim 1-3, which is characterized in that the Au-CsPbX described in step (3)3It receives The brilliant fiber optic communication wave band of rice absorbs the method that band gap is adjusted, and includes the following steps：
(1) change AuCl3、AuBr3Concentration, control the size of formed Au nano particles, and then adjusting Au nano particles LSPR absorbs band gap and CsPbX3Nanocrystalline absorption band gap matches；
(2) pass through CsPbBr3, CsPbCl3, CsPbI3Halogen is replaced between serial nano crystalline substance, adjusts the nanocrystalline absorption band of perovskite Gap absorbs band gap with Au nano particles LSPR and matches.
5. according to the preparation method described in one of claim 1-4, which is characterized in that the Au-CsPbX described in step (4)3It receives It is effective compound between meter Jing Yu PMMA, include the following steps：2-3g plexiglass is weighed, control is passed through Au-CsPbBr processed3Nanocrystalline introducing concentration is simultaneously sufficiently stirred, cures, and forms good, the finely dispersed Au- of the transparency CsPbBr3/ PMMA nanocomposites.
6. Au-CsPbX prepared by a kind of preparation method according to one of claim 1-53/ PMMA nanocomposites.
CN201810275569.7A 2018-03-30 2018-03-30 A kind of Au-CsPbX3/ PMMA nanocomposites and preparation method thereof Pending CN108467725A (en)

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Cited By (4)

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CN111073640A (en) * 2018-10-22 2020-04-28 苏州星烁纳米科技有限公司 Method for regulating and controlling emission peak wavelength of perovskite quantum dot-polymer film
CN112694628A (en) * 2020-12-23 2021-04-23 温州大学 CsPbBrI2Preparation and application of @ porous zeolite/PMMA (polymethyl methacrylate) film
CN112834474A (en) * 2021-02-22 2021-05-25 江南大学 Perovskite quantum dot-based 3-chloro-1, 2-propanediol detection method
CN113088026A (en) * 2021-04-06 2021-07-09 温州大学 Ag-CsPbX3PMMA nanocomposite material and preparation method and application thereof

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