CN106947484A - A kind of rear-earth-doped NaYF of dendroid4The preparation method and purposes of up-conversion - Google Patents
A kind of rear-earth-doped NaYF of dendroid4The preparation method and purposes of up-conversion Download PDFInfo
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- CN106947484A CN106947484A CN201710241220.7A CN201710241220A CN106947484A CN 106947484 A CN106947484 A CN 106947484A CN 201710241220 A CN201710241220 A CN 201710241220A CN 106947484 A CN106947484 A CN 106947484A
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 132
- 238000002360 preparation method Methods 0.000 title claims description 32
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 40
- 241000555268 Dendroides Species 0.000 claims abstract description 39
- -1 rare earth ion Chemical class 0.000 claims abstract description 25
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000010345 tape casting Methods 0.000 claims abstract description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 44
- 239000007864 aqueous solution Substances 0.000 claims description 34
- 239000000243 solution Substances 0.000 claims description 29
- 150000003839 salts Chemical class 0.000 claims description 23
- 238000003756 stirring Methods 0.000 claims description 19
- 150000001225 Ytterbium Chemical class 0.000 claims description 18
- 150000003746 yttrium Chemical class 0.000 claims description 18
- 239000001509 sodium citrate Substances 0.000 claims description 12
- HRXKRNGNAMMEHJ-UHFFFAOYSA-K trisodium citrate Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O HRXKRNGNAMMEHJ-UHFFFAOYSA-K 0.000 claims description 12
- 150000000917 Erbium Chemical class 0.000 claims description 11
- 150000003013 phosphoric acid derivatives Chemical class 0.000 claims description 11
- 229940038773 trisodium citrate Drugs 0.000 claims description 10
- 239000003945 anionic surfactant Substances 0.000 claims description 9
- 239000003093 cationic surfactant Substances 0.000 claims description 8
- FRNOGLGSGLTDKL-UHFFFAOYSA-N thulium atom Chemical class [Tm] FRNOGLGSGLTDKL-UHFFFAOYSA-N 0.000 claims description 7
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 6
- 150000000922 Holmium Chemical class 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 3
- OBOSXEWFRARQPU-UHFFFAOYSA-N 2-n,2-n-dimethylpyridine-2,5-diamine Chemical group CN(C)C1=CC=C(N)C=N1 OBOSXEWFRARQPU-UHFFFAOYSA-N 0.000 claims description 2
- NGDQQLAVJWUYSF-UHFFFAOYSA-N 4-methyl-2-phenyl-1,3-thiazole-5-sulfonyl chloride Chemical compound S1C(S(Cl)(=O)=O)=C(C)N=C1C1=CC=CC=C1 NGDQQLAVJWUYSF-UHFFFAOYSA-N 0.000 claims description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 2
- NEUSVAOJNUQRTM-UHFFFAOYSA-N cetylpyridinium Chemical compound CCCCCCCCCCCCCCCC[N+]1=CC=CC=C1 NEUSVAOJNUQRTM-UHFFFAOYSA-N 0.000 claims description 2
- 229960004830 cetylpyridinium Drugs 0.000 claims description 2
- 239000000460 chlorine Substances 0.000 claims description 2
- 229910052801 chlorine Inorganic materials 0.000 claims description 2
- 238000004090 dissolution Methods 0.000 claims description 2
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical group [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 claims description 2
- YBYGDBANBWOYIF-UHFFFAOYSA-N erbium(3+);trinitrate Chemical compound [Er+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O YBYGDBANBWOYIF-UHFFFAOYSA-N 0.000 claims description 2
- HDGGAKOVUDZYES-UHFFFAOYSA-K erbium(iii) chloride Chemical group Cl[Er](Cl)Cl HDGGAKOVUDZYES-UHFFFAOYSA-K 0.000 claims description 2
- 239000000945 filler Substances 0.000 claims description 2
- WDVGLADRSBQDDY-UHFFFAOYSA-N holmium(3+);trinitrate Chemical compound [Ho+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O WDVGLADRSBQDDY-UHFFFAOYSA-N 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- LLZBVBSJCNUKLL-UHFFFAOYSA-N thulium(3+);trinitrate Chemical compound [Tm+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O LLZBVBSJCNUKLL-UHFFFAOYSA-N 0.000 claims description 2
- ILOTUXNTERMOJL-UHFFFAOYSA-K thulium(iii) chloride Chemical group Cl[Tm](Cl)Cl ILOTUXNTERMOJL-UHFFFAOYSA-K 0.000 claims description 2
- PYOOBRULIYNHJR-UHFFFAOYSA-K trichloroholmium Chemical group Cl[Ho](Cl)Cl PYOOBRULIYNHJR-UHFFFAOYSA-K 0.000 claims description 2
- KUBYTSCYMRPPAG-UHFFFAOYSA-N ytterbium(3+);trinitrate Chemical compound [Yb+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O KUBYTSCYMRPPAG-UHFFFAOYSA-N 0.000 claims description 2
- CKLHRQNQYIJFFX-UHFFFAOYSA-K ytterbium(III) chloride Chemical group [Cl-].[Cl-].[Cl-].[Yb+3] CKLHRQNQYIJFFX-UHFFFAOYSA-K 0.000 claims description 2
- 238000007766 curtain coating Methods 0.000 claims 1
- 239000002689 soil Substances 0.000 claims 1
- 239000010408 film Substances 0.000 abstract description 32
- 230000015572 biosynthetic process Effects 0.000 abstract description 7
- 238000003786 synthesis reaction Methods 0.000 abstract description 7
- 238000004020 luminiscence type Methods 0.000 abstract description 4
- 239000010409 thin film Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 229920006280 packaging film Polymers 0.000 abstract description 2
- 239000012785 packaging film Substances 0.000 abstract description 2
- 239000004094 surface-active agent Substances 0.000 abstract description 2
- 150000001450 anions Chemical class 0.000 abstract 1
- 150000001768 cations Chemical class 0.000 abstract 1
- 239000000463 material Substances 0.000 description 33
- 239000000725 suspension Substances 0.000 description 19
- 239000013078 crystal Substances 0.000 description 12
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 9
- 229910017604 nitric acid Inorganic materials 0.000 description 9
- 150000002910 rare earth metals Chemical class 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 239000002131 composite material Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
- 239000000843 powder Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000005284 excitation Effects 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 238000013329 compounding Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 239000002096 quantum dot Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 239000012190 activator Substances 0.000 description 2
- 238000002189 fluorescence spectrum Methods 0.000 description 2
- 239000007850 fluorescent dye Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002086 nanomaterial Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 2
- 238000001291 vacuum drying Methods 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000002003 electron diffraction Methods 0.000 description 1
- 238000010041 electrostatic spinning Methods 0.000 description 1
- 238000002389 environmental scanning electron microscopy Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229920001109 fluorescent polymer Polymers 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000002114 nanocomposite Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Classifications
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- 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
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7766—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals
- C09K11/7772—Halogenides
- C09K11/7773—Halogenides with alkali or alkaline earth metal
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/16—Halogen-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2329/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
- C08J2329/02—Homopolymers or copolymers of unsaturated alcohols
- C08J2329/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Luminescent Compositions (AREA)
Abstract
The invention discloses a kind of rear-earth-doped NaYF of dendroid4Up-conversion and its production and use.Hydro-thermal method under being situated between, synthesis high-crystallinity, pure hexagonal phase, and good water solubility, the rare earth ion doped NaYF of the high dendroid of fluorescence intensity are adjusted by anion/cation surfactant jointly4Up-conversion.By the NaYF of synthesis4Up-conversion its as functional stuffing, rare earth ion doped NaYF is prepared by the tape casting4Up-conversion/PVA laminated films, can make PVA film possess up-conversion luminescence performance, can be used as anti-counterfeit packaging film in the case where not influenceing thin-film transparent.
Description
Technical field
The invention discloses a kind of preparation method of up-conversion, and in particular to a kind of rear-earth-doped NaYF of dendroid4
The preparation method and purposes of up-conversion；Belong to nano composite material technical field.
Background technology
Market economy is continued to develop, Commodity Competition is fiercer, the normal economy of fake and inferior commodities very disruptive
Order, package anti-counterfeiting technology alternates rapid as the important means technology of commodity counterfeit prevention.Anti-counterfeiting technology common at present has：Printing
Technique is false proof, code anti-fake, optical anti-counterfeiting, structural anti false and atomic nucleus double card anti-counterfeiting technology etc..Fluorescence falsification preventing is materials chemistry
The important branch of anti-counterfeiting technology, main Application in Anti-counterfeiting form has anti-forgery ink, anti-counterfeit paint, false-proof film, cheque paper, false proof
Fiber etc. is several.Conventional fluorescence falsification preventing material has organic fluorescent dye, quantum dot, rare earth compounding and rear-earth-doped go up to turn
Change fluorescent material etc..Organic fluorescent dye, quantum dot and rare earth compounding belong to down-conversion luminescent material, its higher poison
Property, transreplication and wider fluorescence emission peak limit the application in fluorescence falsification preventing.Rear-earth-doped up-conversion luminescent material
The higher shortwave radiation of energy can be sent in the case where the relatively low long-wave radiation of energy is excited, be anti-stoke luminescent material, compare
In other fluorescent materials, rare earth up-conversion has special, efficient luminescent properties, it is difficult to replicate, detection is simple, fast light drift
In vain, toxicity is low, and stability is high and is widely used.Rear-earth-doped up-conversion luminescent material is generally by activator, sensitizer and base
Three parts of matter are constituted.Rare earth fluoride particularly NaYF4, due to its own relatively low phonon energy, can effectively reduce
The radiationless relaxation rate of transition material, it is considered to be one of optimum substrate material.
At present, NaYF4Up-conversion luminescence nano particle is concentrated mainly on for fluorescence falsification preventing prepares fluorescent ink.Middle promulgated by the State Council
Bright patent CN201610308927.0 disclose silk-screen printing rare earth up-conversion luminescence ink and preparation method thereof and it is false proof should
With rare earth up-conversion luminescent material is applied as anti-forgery ink.It is this to be based on rear-earth-doped NaYF4Up-conversion
Fluorescent ink is used for fluorescence falsification preventing, and one is the problem of most notable, rear-earth-doped NaYF4Up-conversion fluorescent ink it is steady
It is qualitative, i.e., due to rear-earth-doped NaYF4Up-conversion is water-fast in itself, oil resistivity is not good, causes anti-fake mark to be easily lost, from
And influence its anti-counterfeiting performance.Fluorescent material is embedded into polymeric film substrates prepare fluorescent polymer film be solve it is above-mentioned
The effective ways of problem.Also, film is widely used in packaging, fluorescent material THIN COMPOSITE is prepared using rare earth up-conversion
Film has good application prospect in package anti-counterfeiting field.Inorganic upconverting fluorescent material is dispersed in main film body matrix
In, because fluorescent material consumption does not influence the transparency of film less, only excite lower ability in specific infrared light (wavelength is 980nm)
Fluorescence can be shown, good concealment, hardly possible is imitated, and false proof purpose can be achieved.Chinese invention patent CN201410720118.9 is announced
A kind of preparation method of electrostatic spinning fluorescence PVA nano fibrous membranes, it was also proposed that it is used as fluorescence falsification preventing film, but its
Preparing the process complexity of fluorescent nano material, and needing progress surface to be modified could realize and PVA blendings.Compared to high warm
Decomposition method, hydro-thermal method prepares NaYF4Up-conversion has the product good water solubility that synthesis condition is gentle, synthesize, and yield phase
To it is higher the advantages of.NaYF is synthesized in hydro-thermal method4In up-conversion, differential responses condition has very big shadow to the pattern of product
Ring.And prepare in organic-inorganic materials, the microstructure of inorganic nano material is also to influence itself and polymeric matrix
The key factor of material compatibility.Dendritic structure makes it easily be blended to be formed with matrix material because of its special geometry
Multifunctional composite.Tsing-Hua University Li Yadong professor adjusts the hydro-thermal method under being situated between to synthesize by cetyl trimethylammonium bromide
There is the dendroid NaYF of α (cube) phase4:Er3+/Yb3+Material, and it is applied to polystyrene fluorescence composite material
Prepare (Inorg.Chem.2007,46,6050-6055).Compared to the NaYF of α (cube) phase4Up-conversion, β (six sides)
Phase NaYF4Up-conversion has more preferable up-conversion luminescence performance.Therefore, suitable hydro-thermal method technology path synthesis is explored
With β (six sides) phase dendroids NaYF4Up-conversion, for exploitation NaYF4Up-conversion/polymer composites, letter
The preparation process for changing prior art is significant.
The content of the invention
It is difficult to obtain β (six sides) phase dendroids NaYF by hydro-thermal method in the prior art4Up-conversion lack
Fall into, it is dilute with β (six sides) phase dendroid it is an object of the invention to be to provide a kind of good water solubility, fluorescence intensity height
Native ion doping NaYF4The preparation method of up-conversion.
It is to provide a kind of high-quality rare earth ion doped NaYF of dendroid that another object of the present invention, which is,4It is upper to turn
Application of the conversion materials in fluorescent composite thin film is prepared.The rare earth ion doped NaYF of dendroid4Up-conversion has good
Fluorescence property, be easy to polymeric substrate be blended dendroid micro-structural, good water solubility the advantages of, the fluorescence falsification preventing film of preparation
Easily detected with security feature, hardly possible is imitated, performance is stable, has good application prospect in package anti-counterfeiting field.
In order to realize above-mentioned technical purpose, have β (six sides) phase dendroid rear-earth-doped the invention provides one kind
NaYF4The preparation method of up-conversion, this method be in rare earth salt aqueous solution, add anionic surfactant solution,
Cationic surfactant solution and the NaF aqueous solution, after stirring, are transferred in water heating kettle, regulation system pH value to 1~2,
Hydro-thermal reaction is carried out at a temperature of 180 DEG C~240 DEG C, the rear-earth-doped NaYF of hexagonal phase dendroid is produced4Up-conversion.
In technical scheme the rear-earth-doped NaYF of dendroid is prepared in hydro-thermal method4During up-conversion, close
Key is that anion surfactant and cationic surfactant are applied in combination, and on the one hand can promote NaYF4By metastable state
The opposite thermally-stabilised state in four directions hexagonal phase transformation, prepare pure hexagonal phase state up-conversion；On the other hand utilize both
End in synergy, induced material growth course is branched, and then grows dendroid micro-structural.Anion surfactant
With rare earth ion by coordination formation chelate, the nucleation stage of crystal and crystal are given birth in hydrothermal reaction process
Long stage separation, so as to obtain highly crystalline product.Coordination ion is adsorbed in plane of crystal, crystal is evenly dispersed in reactant
In system, the surface free energy of reaction system is improved, promotes transformation of the crystal from cubic phase to hexagonal phase state.Cationic surface is lived
Property agent, play competitive coordination in system, can weaken single complexant because excessive concentration and may caused by crystal from
The inhibitory action of cubic opposite hexagonal phase transformation, while surface free energy that can be in raising system, reduces the energy of crystal transition
Barrier is measured, compared with synthesizing pure hexagonal phase crystal under mild reaction conditions.In addition cationic surfactant shape in reaction system
Into micella, by suppressing anion surfactant absorption in anisotropic growth trend formed by particular crystal plane, to crystal
Prolong single direction growth and produce constraint, and induced crystal end is branched, and then grow dendritic structure.
It is preferred that scheme, the anionic surfactant solution be trisodium citrate aqueous solution.
It is preferred that scheme, the cationic surfactant solution be halogenated phosphates ethanol solution.
It is preferred that scheme, the mol ratio of trisodium citrate and rare-earth salts is 0.5~1.5 in the citric acid three sodium solution:
1。
It is preferred that scheme, mol ratio of the halogenated phosphates Chlorine in Solution for cetyl pyridinium and rare-earth salts
For 0.4~1.0:1.
It is preferred that scheme, the mol ratio of NaF and rare-earth salts is 12~18 in the NaF aqueous solution:1.
More preferably scheme, the concentration of the anion surfactant is 0.07~0.20molL-1。
More preferably scheme, the cationic surfactant solution concentration is 0.02~0.05molL-1。
More preferably scheme, the solubility of the NaF aqueous solution is 1~1.5molL-1。
The volume ratio of more preferably scheme, system reclaimed water and ethanol is 2~4:2.
It is preferred that scheme, yttrium salt, ytterbium salt, M1 salt and M2 salt are included in the rare earths salt；Yttrium salt, ytterbium salt, M1 salt and
The mol ratio of M2 salt is (90-x-y):10:x:Y, 0≤x, y ＜ 3,2≤x+y ＜ 5；
M1 salt and M2 salt are independently selected from erbium salt, thulium salt or holmium salt.
Technical scheme by changing various rare-earth salts between proportionate relationship, can adjust obtain have difference
The up-conversion of up-conversion fluorescence color.By adjusting doping of the up-conversion in PVA, can adjust is had
The fluorescence membrane of different fluorescence intensities, and then can obtain a variety of PVA anti-counterfeit packaging films with different fluorescent characteristics.
More preferably scheme, the ytterbium salt is ytterbium chloride and/or ytterbium nitrate.
More preferably scheme, the yttrium salt is yttrium chloride and/or yttrium nitrate.
More preferably scheme, the erbium salt is erbium chloride and/or erbium nitrate.
More preferably scheme, the thulium salt is thulium chloride and/or thulium nitrate.
More preferably scheme, the holmium salt is holmium chloride and/or holmium nitrate.
It is preferred that scheme, time of the hydro-thermal reaction is 8~24h.
It is preferred that scheme, rare earths salt is rare earth salt aqueous solution.
It is preferred that scheme, system pH using concentrated nitric acid adjust.Branch can be obtained by the way that pH value of reaction system is adjusted into 1~2
Shape micro-structural product, pH value is more than 2 but forms the small column of draw ratio and the spherical product mixed when being acid, and pH value is increased to
Occur that accessory substance is unfavorable for reaction and carried out when alkaline.
The rear-earth-doped NaYF of dendroid prepared by technical scheme4Up-conversion microscopic appearance is dendroid,
Crystalline phase is pure hexagonal phase, and crystallinity is high, good water solubility.
Present invention also offers a kind of rear-earth-doped NaYF of dendroid4The application of up-conversion, the application is by branch
The rear-earth-doped NaYF of shape4Up-conversion is as fluorescent functional applying filler in preparation fluorescent composite thin film.
It is preferred that scheme, the rear-earth-doped NaYF of dendroid4Up-conversion is blended with PVA, dissolving, is prepared by the tape casting
Fluorescence PVA film.
More preferably scheme, by the rare earth ion doped NaYF of dendroid4Up-conversion and PVA in mass ratio (0.1~
4):100 mixed dissolutions, cooling, flow casting molding are produced.
More preferably scheme, laminated film thickness obtained by flow casting molding is 0.06mm~0.2mm.
Compared with the prior art, the beneficial effect that technical scheme is brought：
1st, technical scheme is adjusted by using Yin/Yang double ion surfactant and is situated between, and obtain has six sides first
The rear-earth-doped NaYF of dendroid of phase4Up-conversion.Up-conversion with pure hexagonal phase is than Emission in Cubic or four or six sides
The up-conversion mutually mixed has higher fluorescence intensity.
2nd, technical scheme by hydro-thermal method one-step synthesis dendroid rear-earth-doped NaYF4Up-conversion,
Synthesis step is simple, and mild condition is conducive to industrialized production.
3rd, the up-conversion of dendroid hexagonal phase prepared by technical scheme, with dendritic structure, and water
Dissolubility is good, and fluorescence intensity is high, and the preparation of PVA film is used for as fluorescence identifying functional stuffing, is shown following excellent
Performance：It is uniformly dispersed in water-solubility PVA film base material (and existing rare earth is from doping NaYF4Up-conversion needs pair
Its surface modification, efficient blending is realized using the particular geometry of its modification), do not influence thin-film transparent, false proof disguise
It is good, it is difficult to be imitated；The pure hexagonal phase state NaYF of high-crystallinity4Up-conversion, fluorescence intensity is high, and anti-counterfeiting characteristic is easy to identify；Tree
Dendritic micro-structural is tightly combined with base material, and performance is stable, and anti-counterfeiting characteristic is not easy to lose；With rare earth ion doped NaYF4As glimmering
Luminescent material, compared to fluorescent materials such as rare earth compounding, quantum dot, organic dyestuff, its optical property is more stablized, and is floated more resistant to light
In vain, thus it is more suitable for as anti-counterfeit package application.
Brief description of the drawings
【Fig. 1】The rear-earth-doped NaYF of dendroid prepared for embodiment 14The XRD test results of up-conversion；
【Fig. 2】The rear-earth-doped NaYF of dendroid prepared for embodiment 14Up-conversion is under 980nm laser excitations
Fluorescence spectra；
【Fig. 3】The rear-earth-doped NaYF of dendroid prepared for embodiment 14Microscopic appearance under up-conversion SEM signs
Figure；
【Fig. 4】The rear-earth-doped NaYF of dendroid prepared for embodiment 14Microscopic appearance under up-conversion TEM signs
And electron diffraction diagram；
【Fig. 5】For embodiment 1 prepare up-conversion/PVA laminated films under natural lighting and 980nm laser irradiation
Under digital photograph；
【Fig. 6】The rear-earth-doped NaYF prepared for comparative example 64Microscopic appearance figure under up-conversion SEM signs；
【Fig. 7】The rear-earth-doped NaYF prepared for fullsized embodiment 74Microscopic appearance figure under up-conversion SEM signs.
Embodiment
Further detailed description, but embodiments of the present invention not limited to this are done to the present invention with reference to embodiment.
Embodiment 1
(1) preparation of dendroid up-conversion：In 100mL round-bottomed flasks, 10mL 0.1molL are added-1Rare-earth salts
The aqueous solution (wherein yttrium salt：Ytterbium salt：The mol ratio of erbium salt is 0.88：0.10：0.02)、7.5mL 0.1mol·L-1Trisodium citrate
The aqueous solution and 20mL 0.025molL-1Halogenated phosphates ethanol solution, stirs 30min at room temperature, obtains milky white
Color suspension.Then, toward 12mL 1.0molL are added dropwise in the milky suspension-1The NaF aqueous solution, is stirred at room temperature
1h.The suspension of gained is transferred in 100mL hydrothermal reaction kettles, and addition 1~1.5mL concentrated nitric acid regulation system pH=1.5,
Reaction 12h is stood in 180 DEG C of baking oven.After completion of the reaction, reaction system naturally cools to room temperature, centrifuges
(12000rpm, 10min) and washed with ethanol (three times), product is dried in vacuo 6h in 60 DEG C and obtains rear-earth-doped NaYF4It is upper to turn
Conversion materials.The XRD spectrum of products therefrom is as shown in figure 1, all diffraction maximum positions and relative intensity and hexagonal phase NaYF4Matching is good
Good, without other phase miscellaneous peaks, and peak shape is sharp, and it is highly crystalline pure hexagonal phase NaYF to illustrate the product4Material；Products therefrom exists
Fluorescence spectra under 980nm laser excitations as shown in Fig. 2 in spectrogram four emission peak positions wavelength energy and Er3+'s2H9/2-4I15/2,2H11/2-4I15/2,4S3/2-4I15/2With4F9/2-4I15/2Energy level transition energy it is corresponding, illustrate the glimmering of product
Light by activator Er emission of ions, positioned at green wavelength transmitting peak intensity apparently higher than purple light with red wavelength range
Emission peak, therefore strong green emitting is presented in the aqueous solution of product under 980nm exciting lights；The scanning electron microscope (SEM) photograph of products therefrom
As shown in figure 3, product can be observed in figure shows skeleton pattern, and pattern has Multivariate characteristics, including simple
Three arms, the pattern such as four arms, while also including other more complicated multi-arm dendroid patterns.Typical multi-arm dendroid shape
The TEM pictures of looks as shown in figure 4, and typical dot chart is presented in the diffraction pattern of crystal, show that the dendroid rare earth of synthesis is mixed
Miscellaneous NaYF4Up-conversion is high-crystallinity monocrystal material.
(2) preparation of up-conversion/PVA laminated films：In 250mL round-bottomed flask, 90mL deionized waters are added
After obtained dendroid up-conversion, ultrasonic 20min in 0.2g above-mentioned steps, 10g PVA are added, is slowly stirred, treats PVA
After complete swelling, it is warming up to 90 DEG C and accelerates mixing speed, continues to stir 2.5h, generate laminated film stoste, stand after cooling
Film stoste is cast on mould again uniformly, 12h is dried in vacuo at 40 DEG C and is produced.Laminated film swashs in natural light and 980nm
Digital photograph under two kinds of photoenvironments of light is as shown in Figure 5, it is seen that the laminated film is transparent under natural lighting, swashs in 980nm
Light, which is excited down, can send strong green fluorescence.
Embodiment 2
The preparation of dendroid up-conversion：In 100mL round-bottomed flasks, 10mL 0.1molL are added-1Rare earth salt solution
Solution (wherein yttrium salt：Ytterbium salt：The mol ratio of thulium salt is 0.88：0.10：0.02)、7.5mL 0.12mol·L-1Trisodium citrate
The aqueous solution and 20mL 0.03molL-1Halogenated phosphates ethanol solution, stirs 30min at room temperature, obtains milky
Suspension.Then, toward 12mL 1.2molL are added dropwise in the milky suspension-1The NaF aqueous solution, is stirred at room temperature
1h.The suspension of gained is transferred in 100mL hydrothermal reaction kettles, and addition 1~1.5mL concentrated nitric acid regulation system pH=1.5,
Reaction 12h is stood in 180 DEG C of baking oven.After completion of the reaction, reaction system naturally cools to room temperature, centrifuges
(12000rpm, 10min) and washed with ethanol (three times), it is rear-earth-doped that product obtains dendroid in 60 DEG C of vacuum drying 6h
NaYF4Up-conversion.
The preparation of up-conversion/PVA laminated films：In 250mL round-bottomed flask, add 90mL deionized waters and
In 0.2g above-mentioned steps after obtained dendroid up-conversion, ultrasonic 20min, 10g PVA are added, is slowly stirred, treats that PVA is complete
After being swelled entirely, it is warming up to 90 DEG C and accelerates mixing speed, continues to stir 2.5h, generate laminated film stoste, stand after cooling down again
Film stoste is cast uniformly on mould, 12h is dried in vacuo at 40 DEG C and is produced.Gained up-conversion and up-conversion/
PVA laminated films are in blue-light-emitting under 980nm exciting lights.
Embodiment 3
Other conditions are same as Example 1, and the mol ratio of rare earth salt aqueous solution is adjusted to yttrium salt by difference：Ytterbium salt：
The mol ratio of holmium salt is 0.88：0.10：0.02, gained up-conversion and up-conversion/PVA laminated films swash in 980nm
It is luminous lower in green emitting.
Embodiment 4
Other conditions are same as Example 1, and the mol ratio of rare earth salt aqueous solution is adjusted to yttrium salt by difference：Ytterbium salt：
Thulium salt：The mol ratio of erbium salt is 0.86：0.10：0.02：0.02, gained up-conversion and up-conversion/PVA laminated films
It is luminous in yellow green under 980nm exciting lights.
Embodiment 5
Other conditions are same as Example 1, and the mol ratio of rare earth salt aqueous solution is adjusted to yttrium salt by difference：Ytterbium salt：
The mol ratio of thulium salt is 0.65：0.30：0.5, gained up-conversion and up-conversion/PVA laminated films are excited in 980nm
Taken on a red color under light luminous.
Embodiment 6
Other conditions are same as Example 1, and difference is during the preparation of up-conversion/PVA laminated films
0.1g dendroid up-conversions are added, the THIN COMPOSITE under 980nm laser excitations with relatively weak green emitting is can obtain
Film.
Embodiment 7
Other conditions are same as Example 2, and difference is during the preparation of up-conversion/PVA laminated films
0.4g dendroid up-conversions are added, the laminated film under 980nm laser excitations with stronger blue-light-emitting is can obtain.
Comparative example 1
The preparation of up-conversion：In 100mL round-bottomed flasks, 10mL 0.1molL are added-1Rare earth salt aqueous solution (its
Middle yttrium salt：Ytterbium salt：The mol ratio of erbium salt is 0.88：0.10：0.02)、7.5mL 0.1mol·L-1The aqueous solution of trisodium citrate
And 20mL ethanol, 30min is stirred at room temperature, obtains milky suspension.Then, toward being added dropwise in the milky suspension
12mL 1mol·L-1The NaF aqueous solution, stirs 1h at room temperature.The suspension of gained is transferred in 100mL hydrothermal reaction kettles,
And 1~1.5mL concentrated nitric acid regulation system pH=1.5 are added, reaction 12h is stood in 180 DEG C of baking oven.After completion of the reaction, instead
Answer system to naturally cool to room temperature, centrifuge (12000rpm, 10min) and washed with ethanol (three times), product is true in 60 DEG C
Sky dries 6h and obtains white powder, and products therefrom is four hexagonal phase hybrid materials.
Comparative example 2
The preparation of up-conversion：In 100mL round-bottomed flasks, 10mL 0.1molL are added-1Rare earth salt aqueous solution (its
Middle yttrium salt：Ytterbium salt：The mol ratio of erbium salt is 0.88：0.10：0.02), 7.5mL water and 20mL 0.025molL-1Chloro ten
Six alkyl pyridine ethanol solutions, stir 30min at room temperature, obtain milky suspension.Then, toward in the milky suspension by
It is added dropwise to 12mL 1molL-1The NaF aqueous solution, stirs 1h at room temperature.The suspension of gained is transferred to 100mL hydro-thermal reactions
In kettle, and 1~1.5mL concentrated nitric acid regulation system pH=1.5 are added, reaction 12h is stood in 180 DEG C of baking oven.Reaction is finished
Afterwards, reaction system naturally cools to room temperature, centrifuges (12000rpm, 10min) and is washed with ethanol (three times), product is in 60
DEG C vacuum drying 6h obtains white powder, and products therefrom is four hexagonal phase hybrid materials.
Comparative example 3
The preparation of up-conversion：In 100mL round-bottomed flasks, 10mL 0.1molL are added-1Rare earth salt aqueous solution (its
Middle yttrium salt：Ytterbium salt：The mol ratio of erbium salt is 0.88：0.10：0.02)、7.5mL 0.1mol·L-1The aqueous solution of trisodium citrate
And 20mL 0.025molL-1Halogenated phosphates ethanol solution, stirs 30min at room temperature, obtains milky suspended
Liquid.Then, toward 8mL 1molL are added dropwise in the milky suspension-1The NaF aqueous solution, stirs 1h at room temperature.By gained
Suspension be transferred in 100mL hydrothermal reaction kettles, and add 1~1.5mL concentrated nitric acid regulation system pH=1.5, in baking oven
Reaction 12h is stood at 180 DEG C.After completion of the reaction, reaction system naturally cools to room temperature, centrifuges (12000rpm, 10min)
And washed with ethanol (three times), product is dried in vacuo 6h in 60 DEG C and obtains white powder, and products therefrom is NaYF4With NaYF3It is mixed
Compound.
Comparative example 4
The preparation of up-conversion：In 100mL round-bottomed flasks, 10mL 0.1molL are sequentially added-1Rare-earth salts is water-soluble
Liquid (wherein yttrium salt：Ytterbium salt：The mol ratio of erbium salt is 0.88：0.10：0.02)、7.5mL 0.1mol·L-1The water of trisodium citrate
Solution and 20mL 0.025molL-1Halogenated phosphates ethanol solution, stirs 30min at room temperature, obtains milky
Suspension.Then, toward 12mL 1molL are added dropwise in the milky suspension-1The NaF aqueous solution, stirs 1h at room temperature.
The suspension of gained is transferred in 100mL hydrothermal reaction kettles, and adds 1~1.5mL concentrated nitric acid regulation system pH=1.5, in
Reaction 12h is stood in 150 DEG C of baking oven.After completion of the reaction, reaction system naturally cools to room temperature, centrifuge (12000rpm,
10min) and with ethanol wash (three times), product is dried in vacuo 6h in 60 DEG C and obtains white powder, products therefrom is four hexagonal phases
The material mixed.
Comparative example 5
The preparation of up-conversion：In 100mL round-bottomed flasks, 10mL 0.1molL are sequentially added-1Rare-earth salts is water-soluble
Liquid (wherein yttrium salt：Ytterbium salt：The mol ratio of erbium salt is 0.88：0.10：0.02)、7.5mL 0.1mol·L-1The water of trisodium citrate
Solution and 20mL 0.025molL-1Halogenated phosphates ethanol solution, stirs 30min at room temperature, obtains milky
Suspension.Then, toward 12mL 1molL are added dropwise in the milky suspension-1The NaF aqueous solution, stirs 1h at room temperature.
The suspension of gained is transferred in 100mL hydrothermal reaction kettles, and adds 1~1.5mL concentrated nitric acid regulation system pH=1.5, in
Reaction 5h is stood in 180 DEG C of baking oven.After completion of the reaction, reaction system naturally cools to room temperature, centrifuge (12000rpm,
10min) and with ethanol wash (three times), product is dried in vacuo 6h in 60 DEG C and obtains white powder, products therefrom is four hexagonal phases
The material mixed.
Comparative example 6
The preparation of up-conversion：In 100mL round-bottomed flasks, 10mL 0.1molL are sequentially added-1Rare-earth salts is water-soluble
Liquid (wherein yttrium salt：Ytterbium salt：The mol ratio of erbium salt is 0.88：0.10：0.02)、7.5mL 0.1mol·L-1The water of trisodium citrate
Solution and 20mL 0.025molL-1Halogenated phosphates ethanol solution, stirs 30min at room temperature, obtains milky
Suspension.Then, toward 12mL 1molL are added dropwise in the milky suspension-1The NaF aqueous solution, stirs 1h at room temperature.
The suspension of gained is transferred in 100mL hydrothermal reaction kettles, 0.5~1mL concentrated nitric acid regulation system pH=3 are added, in 180 DEG C
Baking oven in stand reaction 12h.After completion of the reaction, reaction system naturally cools to room temperature, centrifuge (12000rpm,
10min) and with ethanol wash (three times), product is dried in vacuo 6h in 60 DEG C and obtains white powder, the ESEM of products therefrom
Figure is as shown in fig. 6, the product obtained when pH value of reaction system is 3 is the small column of draw ratio and some spheroidal materials.
Comparative example 7
The preparation of up-conversion：In 100mL round-bottomed flasks, 10mL 0.1molL are sequentially added-1Rare-earth salts is water-soluble
Liquid (wherein yttrium salt：Ytterbium salt：The mol ratio of erbium salt is 0.88：0.10：0.02)、7.5mL 0.1mol·L-1The water of trisodium citrate
Solution and 20mL 0.025molL-1Halogenated phosphates ethanol solution, stirs 30min at room temperature, obtains milky
Suspension.Then, toward 12mL 1molL are added dropwise in the milky suspension-1The NaF aqueous solution, stirs 1h at room temperature.
The suspension of gained is transferred in 100mL hydrothermal reaction kettles, and adds 0.1molL-1NaOH aqueous solution section system pH=10,
Reaction 12h is stood in 180 DEG C of baking oven.After completion of the reaction, reaction system naturally cools to room temperature, centrifuges
(12000rpm, 10min) and washed with ethanol (three times), product is dried in vacuo 6h in 60 DEG C and obtains white powder, products therefrom
Scanning electron microscope (SEM) photograph as shown in fig. 7, the product obtained when pH value of reaction system is 10 is amorphous material.
Above in conjunction with embodiment to the present invention implementation be explained in detail, but the present invention be not limited to it is above-mentioned
In embodiment, the knowledge that one skilled in the relevant art possesses, present inventive concept can also not departed from
Premise makes a variety of changes.
Claims (10)
1. a kind of rear-earth-doped NaYF of dendroid4The preparation method of up-conversion, it is characterised in that：In rare earth salt aqueous solution,
Anionic surfactant solution, cationic surfactant solution and the NaF aqueous solution are added, after stirring, water is transferred to
In hot kettle, regulation system pH value to 1~2 carries out hydro-thermal reaction at a temperature of 160 DEG C~240 DEG C, produces hexagonal phase dendroid dilute
Soil doping NaYF4Up-conversion.
2. the rear-earth-doped NaYF of dendroid according to claim 14The preparation method of up-conversion, it is characterised in that：
The anionic surfactant solution is trisodium citrate aqueous solution；
The cationic surfactant solution is halogenated phosphates ethanol solution；
The mol ratio of trisodium citrate and rare-earth salts is 0.5~1.5 in the citric acid three sodium solution:1.0；
The halogenated phosphates Chlorine in Solution is 0.40~1.0 for the mol ratio of cetyl pyridinium and rare-earth salts:
1.0；
The mol ratio of NaF and rare-earth salts is 12~18 in the NaF aqueous solution:1.
3. the rear-earth-doped NaYF of dendroid according to claim 24The preparation method of up-conversion, it is characterised in that：
The concentration of the aqueous solution of anionic surfactant is 0.07~0.20molL-1；
The cationic surfactant ethanol solution concentration is 0.02~0.05molL-1；
The solubility of the NaF aqueous solution is 1.0~1.5molL-1；
System reclaimed water and the volume ratio of ethanol are 2~4:2.
4. the rear-earth-doped NaYF of dendroid according to any one of claims 1 to 34The preparation method of up-conversion, it is special
Levy and be：Yttrium salt, ytterbium salt, M1 salt and M2 salt are included in the rare earths salt；Yttrium salt, ytterbium salt, the mol ratio of M1 salt and M2 salt
For (90-x-y):10:x:Y, 0≤x, y ＜ 3,2≤x+y ＜ 5；M1 salt and M2 salt are independently selected from erbium salt, thulium salt or holmium salt.
5. the rear-earth-doped NaYF of dendroid according to claim 44The preparation method of up-conversion, it is characterised in that：
The ytterbium salt is ytterbium chloride and/or ytterbium nitrate；
The yttrium salt is yttrium chloride and/or yttrium nitrate；
The erbium salt is erbium chloride and/or erbium nitrate；
The thulium salt is thulium chloride and/or thulium nitrate；
The holmium salt is holmium chloride and/or holmium nitrate.
6. the rear-earth-doped NaYF of dendroid according to any one of claims 1 to 34The preparation method of up-conversion, it is special
Levy and be：The time of the hydro-thermal reaction is 8~24h.
7. a kind of rear-earth-doped NaYF of dendroid4The application of up-conversion, it is characterised in that：By any one of claim 1~6
The rear-earth-doped NaYF of dendroid prepared by the preparation method4Up-conversion is as fluorescent functional applying filler in preparing fluorescence
Laminated film.
8. the rear-earth-doped NaYF of dendroid according to claim 74The application of up-conversion, it is characterised in that：Dendroid
Rear-earth-doped NaYF4Up-conversion is blended with PVA, dissolving, and fluorescence PVA film is prepared by the tape casting.
9. the rear-earth-doped NaYF of dendroid according to claim 84The application of up-conversion, it is characterised in that：By branch
The rare earth ion doped NaYF of shape4Up-conversion and PVA (0.1~4) in mass ratio:100 mixed dissolutions, cooling, flow casting molding,
Produce.
10. the rear-earth-doped NaYF of dendroid according to claim 94The application of up-conversion, it is characterised in that：Curtain coating
Obtained by molding laminated film thickness is 0.06mm~0.2mm.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101699636A (en) * | 2009-10-22 | 2010-04-28 | 厦门大学 | Preparation method of fluorescent film capable of improving conversion efficiency of solar cell |
| CN105694883A (en) * | 2016-03-29 | 2016-06-22 | 沈阳化工大学 | Method for controlling particle size and shape of nano powder |
-
2017
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101699636A (en) * | 2009-10-22 | 2010-04-28 | 厦门大学 | Preparation method of fluorescent film capable of improving conversion efficiency of solar cell |
| CN105694883A (en) * | 2016-03-29 | 2016-06-22 | 沈阳化工大学 | Method for controlling particle size and shape of nano powder |
Non-Patent Citations (1)
| Title |
|---|
| HUI CHEN等: "Determination of Ammonia in Water Based on Chemiluminescence Resonance Energy Transfer between Peroxymonocarbonate and Branched NaYF4:Yb3+/Er3+ Nanoparticle", 《ANALYTICAL CHEMISTRY》 * |
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