CN102268262B - Method for synthesizing Pt: ZnSe(S) alloy nano crystal by aqueous phase process - Google Patents
Method for synthesizing Pt: ZnSe(S) alloy nano crystal by aqueous phase process Download PDFInfo
- Publication number
- CN102268262B CN102268262B CN 201110135958 CN201110135958A CN102268262B CN 102268262 B CN102268262 B CN 102268262B CN 201110135958 CN201110135958 CN 201110135958 CN 201110135958 A CN201110135958 A CN 201110135958A CN 102268262 B CN102268262 B CN 102268262B
- Authority
- CN
- China
- Prior art keywords
- solution
- znse
- water
- alloy nanometer
- nanometer crystals
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The invention belongs to the technical field of preparation methods of nano luminescent materials, and in particular relates to a method for synthesizing a Pt: ZnSe(S) alloy nano crystal by an aqueous phase process. The method comprises the step of preparing a water-soluble Pt: ZnSe(S) alloy nano crystal by using ultrapure water as a solvent, as well as inorganic metal water-soluble compounds such as zinc salt, platinum salt and the like, a selenium powder and a carboxylic acid reagent containing a sulfydryl group as raw materials. According to the invention, cheap raw materials are used instead of an expensive and dangerous organic metal precursor, thus the method is environmentally-friendly, and the preparation cost is reduced; the operation is simple, safe and good in repeatability; and the synthesized nano crystal has a good crystal form and uniform size.
Description
Technical field
The present invention relates to a kind of nano luminescent material preparation method, adopt the water method to synthesize water-soluble Pt:ZnSe (S) alloy nanometer crystals.
Background technology
Semiconductor nano, have that quantum yield is high, the exciting light spectrum width and continuously, emmission spectrum is symmetrical and narrow, radiative color with characteristics such as change of size, photochemical stability are good, compare with traditional fluorescence dye and have incomparable superiority.If can solve the problems such as its biology mixes, bio-toxicity, quantum dot will be in the huge effect of the aspects such as migration of cell recognition, cell dyeing, medical diagnosis on disease, Real Time Monitoring biological components performance.Along with progressively going deep into of research, semiconductor nano becomes emerging, the forward position, the most active research field in analysis science as biomarker.
Semiconductor nano (CdSe, CdS, CdTe) take the Cd compounds as representative has carried out a large amount of research as fluorescent marker in the application of biological field at present, make in the application such as its biology in future, medical science, pharmacy and exist hidden danger but this class contains toxicity that the quantum dot of cadmium has, therefore, the new low toxicity quantum dot of exploitation is used for biomarker becomes the interested problem of people.And the nanocrystalline good luminescent properties that may overcome the problem of bio-toxicity and can keep semiconductor nano material of the ZnSe of containing transition metal ion.Adopted around the nanocrystalline preparation of doping type ZnSe at present is the organic synthesis method more, although the Doped nanocrystal of preparation has the advantages such as fluorescence quantum yield is high, monodispersity is good, but this semiconductor nano is oil-soluble, and most of biomolecules are water miscible, and this has just limited its application at biomedical aspect to a great extent.Compare water phase synthesis method good reproducibility, cheapness, low toxicity, and synthetic nanocrystalline have good stability and biocompatibility with the organic synthesis route.
At present, nanocrystalline at the transient metal doped ZnSe of synthesizing water-solubility and be applied to be in the world initial period aspect the research of biomarker.2009, the method that the people such as the Su Xingguang of Jilin University adulterate by nucleation successfully synthesized water miscible Mn:ZnSe nanocrystalline (Chinese patent: application number is 200910066651.X) at aqueous phase.Their method is, at first generates the MnSe nucleus that has stablizer to coat, then carries out the growth of ZnSe shell around the MnSe nucleus, and molten interface is very thin mutually to cause the Mn/Zn ion, quantum yield very low (only having 2.4%).2011, the Su Xingguang seminar of Jilin University by the mode of grow doping synthesized water miscible Cu:ZnSe nanocrystalline (G Xue, W Chao, N Lu, SX Guang.J.Lumin., 2011,131,1300-1304.).The emmission spectrum of Cu:ZnSe quantum dot changes between 465nm～495nm along with red shift has occured in the prolongation of return time, and fluorescence quantum yield has reached 2.6%.2011, the people such as the Wang Hongzhi of Donghua University utilized the approach of nucleation doping to synthesize Mn:ZnSe nanocrystalline (Chinese patent: application number is 201010287997.5) at aqueous phase.They are by extending the ZnSe epitaxially grown time of shell, have obtained the nanocrystalline of the adjustable stabilized illumination of color, and its emmission spectrum changes between 572～602nm, and fluorescence quantum yield has reached 4.8%.According to literature survey, the transient metal doped ZnSe of synthesizing water-solubility is nanocrystalline, and its fluorescence quantum yield is generally lower.Therefore, exploring a kind of synthetic method tool that improves the nanocrystalline fluorescence efficiency of water soluble ZnSe and photochemical stability is of great significance.
In addition, Pang Daiwen seminar synthesized the CdSe of doping Pt nanocrystalline (Z Q Tian, Z L Zhang, D W Pang, et al.Chem.Commun., 2009,4025-4027.), have the advantages such as size is little, structure homogeneous, good stability.And with Pt mix ZnSe nanocrystalline in from having no the bibliographical information mistake.For this reason, we with transition metal Pt mix ZnSe nanocrystalline in, utilize the water method synthetic, expectation improves nanocrystalline luminous efficiency and the photochemical stability of water soluble ZnSe.
Summary of the invention
Purpose of the present invention is exactly for the general lower problem of the nanocrystalline fluorescence quantum yield of water-soluble transition metal doped ZnS e, proposes a kind of water method and synthesizes the nanocrystalline method of transition metal Pt doped ZnS e.Water-soluble Pt:ZnSe (S) the alloy nanometer crystals good crystalline, the size homogeneous that synthesize.The method has the advantages such as reaction system is simple, raw material is easy to get, environmental pollution is little.
For achieving the above object, the present invention is at synthetic Pt:ZnSe (S) alloy nanometer crystals of aqueous phase, with water-soluble sulfhydryl compound as tensio-active agent, by extending the reaction times, the nanocrystalline degree of crystallinity of gained is better, the size homogeneous, fluorescence quantum yield (take Quinine Sulphate Di HC as reference) is in 4.7% left and right.
The method of synthetic Pt:ZnSe (S) alloy nanometer crystals of water method of the present invention specifically comprises the steps:
1, at first zinc salt and water-soluble sulfhydryl compound are mixed thin up to 50 in the there-necked flask of 250ml～100ml, mix and blend 5～20 minutes;
Zinc salt is Zn (NO
3)
2, Zn (Ac)
2Or ZnCl
2, water-soluble sulfhydryl compound is Thiovanic acid, 3-thiohydracrylic acid, sulfydryl butyric acid or halfcystine, the ratio of zinc salt and water-soluble sulfhydryl compound is 1: 1～1: 5.
2, add 10ml Tetrachloroplatinum solution in the solution of step 1, continue to stir 5 minutes;
The concentration of Tetrachloroplatinum solution is 0.001M～0.01M.
3, with sodium hydroxide solution, the pH value of solution of step 2 is transferred to 8～11, pass into rare gas element this moment in this basic solution, and bubbling deoxygenation 10～30 minutes obtains oxygen-free water solution;
Rare gas element can be argon gas or nitrogen.
4, under protection of inert gas, selenium powder and sodium borohydride are dissolved in 1～20ml ultrapure water, be heated to 40～80 ℃, reacted 1～30 minute, make the NaHSe storing solution;
The mol ratio of selenium powder and sodium borohydride is 1: 2～1: 10, and the mol ratio of selenium powder and zinc salt is 1: 2～1: 15.
5, the NaHSe storing solution that step 4 is made is injected in the alkaline oxygen-free water solution that step 3 makes fast;
6, the solution that makes of step 5 begins to heat up under protection of inert gas, begins timing when temperature rises to 96 ℃.At set intervals, take out certain solution with glass syringe, be used for ultraviolet and fluorometric investigation.Reaction finishes to treat that it naturally cools to room temperature, can obtain ZnSe (S) the alloy nanometer crystals aqueous solution of faint yellow transparent doping Pt.
7, add Virahol in the solution that makes to step 6, centrifugal purification then, vacuum-drying obtains Pt:ZnSe (S) alloy nanometer crystals powder.
The method of synthetic Pt:ZnSe (S) alloy nanometer crystals of water method of the present invention has following characteristics:
1, transition metal Pt is doped in ZnSe (S) alloy nanometer crystals first.
2, adopt synthesizing nanocrystalline in the aqueous solution, compare the synthetic method of organic phase, toxicity and cost all reduce greatly, and the single sintering amount is large, are fit to large-scale preparation.In addition, synthetic nanocrystalline good water solubility and stable does not need aftertreatment can be directly used in biomarker.
3, in the X-ray diffraction spectrogram, with discovery after the standard card contrast, the peak position of the nanocrystalline diffraction peak of gained is between the peak position of the nanocrystalline and diffraction peak that Cubic ZnS is nanocrystalline of the Cubic ZnSe of standard, show gained nanocrystalline be not simple Pt:ZnSe, but Pt:ZnSe (S) alloy nanometer crystals.
4, in fluorescence spectrum, the position of emission peak appears at the 470nm left and right.
Water-soluble doping type low toxicity Pt:ZnSe (S) alloy nanometer crystals that the present invention synthesizes can be used as the fluorescent mark material, is widely used in biological detection, in cell, tissue or even living imaging research.
Below in conjunction with drawings and Examples, technical scheme of the present invention is further described.
Description of drawings
Fig. 1 is the X-ray diffraction spectrogram of Pt:ZnSe (S) alloy nanometer crystals that synthesizes when the reaction times is 11h of the present invention.
Fig. 2 is the TEM figure of Pt:ZnSe (S) alloy nanometer crystals that synthesizes when the reaction times is 11h of the present invention.
Fig. 3 is that the excitation wavelength of Pt:ZnSe (S) alloy nanometer crystals that synthesizes in the differential responses time of the present invention is the fluorescence spectrum figure of 350nm.
Embodiment
Embodiment 1
1, at first 0.439g zinc acetate and 1.0614g 3-thiohydracrylic acid are mixed, in the there-necked flask of 250ml thin up to 50ml, mix and blend 5 minutes.
2, the Tetrachloroplatinum solution that adds 10ml0.001M in the solution of step 1 continues to stir 5 minutes.
3, with sodium hydroxide solution, the pH value of solution of step 2 is transferred to 8, pass into argon gas this moment in this basic solution, and bubbling deoxygenation 10 minutes obtains oxygen-free water solution.
4, under argon shield, 0.079g selenium powder and 0.0757g sodium borohydride are dissolved in the 5ml ultrapure water, be heated to 40 ℃, reacted 30 minutes, make the NaHSe storing solution.
5, the NaHSe storing solution that step 4 is made is injected in the alkaline oxygen-free water solution that step 3 makes fast.
6, the solution that makes of step 5 begins to heat up under protection of inert gas, begins timing when temperature rises to 96 ℃.At set intervals, take out certain solution with glass syringe, be used for ultraviolet and fluorometric investigation.Reaction finishes to treat that it naturally cools to room temperature, can obtain ZnSe (S) the alloy nanometer crystals aqueous solution of faint yellow transparent doping Pt.
7, add Virahol in the solution that makes to step 6, centrifugal purification then, vacuum-drying obtains Pt:ZnSe (S) alloy nanometer crystals powder.
1, at first 0.6585g zinc acetate and 0.9553g 3-thiohydracrylic acid are mixed, in the there-necked flask of 250ml thin up to 60ml, mix and blend 10 minutes.
2, the Tetrachloroplatinum solution that adds 10ml0.002M in the solution of step 1 continues to stir 5 minutes.
3, with sodium hydroxide solution, the pH value of solution of step 2 is transferred to 9, pass into argon gas this moment in this basic solution, and bubbling deoxygenation 20 minutes obtains oxygen-free water solution.
4, under argon shield, 0.079g selenium powder and 0.1136g sodium borohydride are dissolved in the 1ml ultrapure water, be heated to 50 ℃, reacted 1 minute, make the NaHSe storing solution.
5, the NaHSe storing solution that step 4 is made is injected in the alkaline oxygen-free water solution that step 3 makes fast.
6, the solution that makes of step 5 begins to heat up under protection of inert gas, begins timing when temperature rises to 96 ℃.At set intervals, take out certain solution with glass syringe, be used for ultraviolet and fluorometric investigation.Reaction finishes to treat that it naturally cools to room temperature, can obtain ZnSe (S) the alloy nanometer crystals aqueous solution of faint yellow transparent doping Pt.
7, add Virahol in the solution that makes to step 6, centrifugal purification then, vacuum-drying obtains Pt:ZnSe (S) manocrystalline powders.
Embodiment 3
1, at first 1.0975g zinc acetate and 1.0614g 3-thiohydracrylic acid are mixed, in the there-necked flask of 250ml thin up to 70ml, mix and blend 15 minutes.
2, the Tetrachloroplatinum solution that adds 10ml0.004M in the solution of step 1 continues to stir 5 minutes.
3, with sodium hydroxide solution, the pH value of solution of step 2 is transferred to 9.5, pass into nitrogen this moment in this basic solution, and bubbling deoxygenation 15 minutes obtains oxygen-free water solution.
4, under nitrogen protection, 0.079g selenium powder and 0.1514g sodium borohydride are dissolved in the 20ml ultrapure water, be heated to 80 ℃, reacted 5 minutes, make the NaHSe storing solution.
5, the NaHSe storing solution that step 4 is made is injected in the alkaline oxygen-free water solution that step 3 makes fast.
6, the solution that makes of step 5 begins to heat up under protection of inert gas, begins timing when temperature rises to 96 ℃.At set intervals, take out certain solution with glass syringe, be used for ultraviolet and fluorometric investigation.Reaction finishes to treat that it naturally cools to room temperature, can obtain ZnSe (S) the alloy nanometer crystals aqueous solution of faint yellow transparent doping Pt.
7, add Virahol in the solution that makes to step 6, centrifugal purification then, vacuum-drying obtains Pt:ZnSe (S) alloy nanometer crystals powder.
Embodiment 4
1, at first 2.195g zinc acetate and 4.2456g 3-thiohydracrylic acid are mixed, in the there-necked flask of 250ml thin up to 80ml, mix and blend 15 minutes.
2, the Tetrachloroplatinum solution that adds 10ml0.006M in the solution of step 1 continues to stir 5 minutes.
3, with sodium hydroxide solution, the pH value of solution of step 2 is transferred to 10, pass into nitrogen this moment in this basic solution, and bubbling deoxygenation 20 minutes obtains oxygen-free water solution.
4, under nitrogen protection, 0.079g selenium powder and 0.1893g sodium borohydride are dissolved in the 20ml ultrapure water, be heated to 50 ℃, reacted 25 minutes, make the NaHSe storing solution.
5, the NaHSe storing solution that step 4 is made is injected in the alkaline oxygen-free water solution that step 3 makes fast;
6, the solution that makes of step 5 begins to heat up under protection of inert gas, begins timing when temperature rises to 96 ℃.At set intervals, take out certain solution with glass syringe, be used for ultraviolet and fluorometric investigation.Reaction finishes to treat that it naturally cools to room temperature, can obtain ZnSe (S) the alloy nanometer crystals aqueous solution of faint yellow transparent doping Pt.
7, add Virahol in the solution that makes to step 6, centrifugal purification then, vacuum-drying obtains Pt:ZnSe (S) alloy nanometer crystals powder.
Embodiment 5
1, at first 3.2925g zinc acetate and 1.5921g 3-thiohydracrylic acid are mixed, in the there-necked flask of 250ml thin up to 100ml, mix and blend 20 minutes.
2, the Tetrachloroplatinum solution that adds 10ml0.01M in the solution of step 1 continues to stir 5 minutes.
3, with sodium hydroxide solution, the pH value of solution of step 2 is transferred to 11, pass into rare gas element this moment in this basic solution, and bubbling deoxygenation 30 minutes obtains oxygen-free water solution.
4, under argon shield, 0.079g selenium powder and 0.3785g sodium borohydride are dissolved in the 10ml ultrapure water, be heated to 60 ℃, reacted 20 minutes, make the NaHSe storing solution.
5, the NaHSe storing solution that step 4 is made is injected in the alkaline oxygen-free water solution that step 3 makes fast.
6, the solution that makes of step 5 begins to heat up under protection of inert gas, begins timing when temperature rises to 96 ℃.At set intervals, take out certain solution with glass syringe, be used for ultraviolet and fluorometric investigation.Reaction finishes to treat that it naturally cools to room temperature, can obtain ZnSe (S) the alloy nanometer crystals aqueous solution of faint yellow transparent doping Pt.
7, add Virahol in the solution that makes to step 6, centrifugal purification then, vacuum-drying obtains Pt:ZnSe (S) alloy nanometer crystals powder.
Claims (4)
1. the method for synthetic Pt:ZnSe (S) alloy nanometer crystals of water method, specifically comprise the steps:
(1) at first zinc salt and water-soluble sulfhydryl compound are mixed, thin up to 50 in the there-necked flask of 250ml～100ml, mix and blend 5～20 minutes, the mol ratio of zinc salt and water-soluble sulfhydryl compound is 1: 1～1: 5;
(2) adding 10ml concentration in the solution of step (1) is the Tetrachloroplatinum solution of 0.001mol/L～0.01mol/L, continues to stir 5 minutes;
(3) with sodium hydroxide solution, the pH value of solution of step (2) is transferred to 8～11, pass into argon gas or nitrogen this moment in this basic solution, and bubbling deoxygenation 10～30 minutes obtains oxygen-free water solution;
(4) under argon gas or nitrogen protection, selenium powder and sodium borohydride are dissolved in 1～20ml ultrapure water, be heated to 40～80 ℃, reacted 1～30 minute, make the NaHSe storing solution, the mol ratio of selenium powder and sodium borohydride is 1: 2～1: 10;
(5) the NaHSe storing solution that step (4) is made is injected in the alkaline oxygen-free water solution that step (3) makes fast;
(6) solution that makes of step (5) begins to heat up under argon gas or nitrogen protection, when rising to 96 ℃, temperature begins timing, at set intervals, take out certain solution with glass syringe, be used for ultraviolet and fluorometric investigation, reaction finishes to treat that it naturally cools to room temperature, can obtain ZnSe (S) the alloy nanometer crystals aqueous solution of faint yellow transparent doping Pt;
(7) add Virahol in the solution that makes to step (6), centrifugal purification then, vacuum-drying obtains Pt:ZnSe (S) alloy nanometer crystals powder.
2. a kind of water method as claimed in claim 1 is synthesized the method for Pt:ZnSe (S) alloy nanometer crystals, it is characterized in that: in described step (1), zinc salt is Zn (NO
3)
2, Zn (Ac)
2Or ZnCl
2
3. a kind of water method as claimed in claim 1 is synthesized the method for Pt:ZnSe (S) alloy nanometer crystals, and it is characterized in that: in described step (1), water-soluble sulfhydryl compound is Thiovanic acid, 3-thiohydracrylic acid, sulfydryl butyric acid or halfcystine.
4. a kind of water method as claimed in claim 1 is synthesized the method for Pt:ZnSe (S) alloy nanometer crystals, it is characterized in that: in described step (1) and step (4), the mol ratio of selenium powder and zinc salt is 1: 2～1: 15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110135958 CN102268262B (en) | 2011-05-25 | 2011-05-25 | Method for synthesizing Pt: ZnSe(S) alloy nano crystal by aqueous phase process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110135958 CN102268262B (en) | 2011-05-25 | 2011-05-25 | Method for synthesizing Pt: ZnSe(S) alloy nano crystal by aqueous phase process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102268262A CN102268262A (en) | 2011-12-07 |
| CN102268262B true CN102268262B (en) | 2013-05-22 |
Family
ID=45050728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110135958 Expired - Fee Related CN102268262B (en) | 2011-05-25 | 2011-05-25 | Method for synthesizing Pt: ZnSe(S) alloy nano crystal by aqueous phase process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102268262B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110479319B (en) * | 2019-08-14 | 2022-05-03 | 武汉工程大学 | Au/CuSe tangential heterogeneous nano material and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005094230A2 (en) * | 2004-03-22 | 2005-10-13 | The Regents Of The University Of California | Hollow nanocrystals and method of making |
| CN101717071A (en) * | 2009-11-20 | 2010-06-02 | 清华大学 | Method for synthesizing series alloy nanometer crystals |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100421787C (en) * | 2007-03-23 | 2008-10-01 | 厦门大学 | Platinum icosahedron nano crystal catalyst, its preparing method and use |
| CN101260294B (en) * | 2008-03-06 | 2010-06-02 | 河南大学 | Method for preparing nano-crystal with core-shell structure |
| CN101787564B (en) * | 2010-04-01 | 2012-01-04 | 云南大学 | Synthesis method of platy-ZnSe fluorescent nano monocrystal |
-
2011
- 2011-05-25 CN CN 201110135958 patent/CN102268262B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005094230A2 (en) * | 2004-03-22 | 2005-10-13 | The Regents Of The University Of California | Hollow nanocrystals and method of making |
| CN101717071A (en) * | 2009-11-20 | 2010-06-02 | 清华大学 | Method for synthesizing series alloy nanometer crystals |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102268262A (en) | 2011-12-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103113882B (en) | Nanocrystalline quantum dot with core-shell structure and preparation method of nanocrystalline quantum dot | |
| CN106433619B (en) | A kind of preparation method of Bi based perovskites quanta point material | |
| CN100572500C (en) | The aqueous phase preparation method of cyclodextrin modified CdTe quantum dot | |
| CN102292410B (en) | Fabrication of nitride nanoparticles | |
| CN107033905A (en) | A kind of rear-earth-doped lithium yttrium fluoride nano material and preparation method and application | |
| CN101191052B (en) | Preparation method for CdSeS quantum dots nano particles | |
| CN103965866B (en) | Preparation method of carboxyl modified CdSe-ZnS quantum dot adopting core-shell structure | |
| CN105478148B (en) | The hydrogen manufacturing system and hydrogen production process of quantum site catalyst of doping and preparation method thereof, quantum site catalyst comprising doping | |
| Sharma et al. | Re-dispersible CaWO4: Tb3+ nanoparticles: Synthesis, characterization and photoluminescence studies | |
| Wang et al. | Incorporation of lanthanide (Eu3+) ions in ZnS semiconductor quantum dots with a trapped-dopant model and their photoluminescence spectroscopy study | |
| CN105154084A (en) | Preparation method for color-adjustable ternary AgInSe2 fluorescent quantum dots through aqueous-phase synthesis | |
| CN101787285A (en) | Method for preparing water-soluble fluorescent ZnSe/ZnS core-shell quantum dots | |
| Yao et al. | Advances in green colloidal synthesis of metal selenide and telluride quantum dots | |
| CN101948686A (en) | Method for aqueous phase synthesis of manganese-doped zinc selenide adjustable-colour fluorescent quantum dot | |
| CN101905862A (en) | Method for preparing ZnSe:Mn quantum dot | |
| CN102701162B (en) | Preparation method of nanometer cadmium selenide sulfide material | |
| CN108314636B (en) | Polyaryl sulfur oscillation luminescent material and preparation method and application thereof | |
| CN102268262B (en) | Method for synthesizing Pt: ZnSe(S) alloy nano crystal by aqueous phase process | |
| CN102211198B (en) | Method for synthesizing water-soluble Pt: ZnSe(S) alloyed nanometer crystal by using hydro-thermal method | |
| CN1234601C (en) | Aqueous phase synthesis for high quality cadmium selenide quantum dots in temperature controlled microwave reactor | |
| CN110550616A (en) | Energy-containing eutectic solvent, application thereof, metal-doped carbon quantum dot prepared from energy-containing eutectic solvent and preparation method of metal-doped carbon quantum dot | |
| CN110078116A (en) | A kind of perovskite CsPbBr3Quantum dot and its preparation method and application | |
| CN101368292A (en) | Coordination template for ZnS or ZnSe nanometer crystal preparation and hydrothermal preparation method thereof | |
| CN103666476A (en) | Microwave-assisted synthesis method of macromolecular polydentate ligand CdTe quantum dots | |
| CN109777400B (en) | Non-toxic Cu2S/ZnS core/shell quantum dot and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130522 Termination date: 20170525 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |