CN105131956A - Polyacrylic acid modified ellipsoidal monodisperse NaGdF4: yb3+, er3+up-conversion fluorescent powder - Google Patents
Polyacrylic acid modified ellipsoidal monodisperse NaGdF4: yb3+, er3+up-conversion fluorescent powder Download PDFInfo
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- CN105131956A CN105131956A CN201510572706.XA CN201510572706A CN105131956A CN 105131956 A CN105131956 A CN 105131956A CN 201510572706 A CN201510572706 A CN 201510572706A CN 105131956 A CN105131956 A CN 105131956A
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Abstract
The invention discloses a preparing method of polyacrylic acid-modified ellipsoidal monodisperse NaGdF4: Yb<3+> and Er<3+> upconversion fluorescent powder. A hydrothermal method is adopted, polyacrylic acid serves as a surface modifier, by regulating usage of the polyacrylic acid, a pH value and a proportion among NaF, NH4HF2 and total quantity of rare earth ions, synthesis of the loose porous ellipsoidal NaGdF4: Yb<3+> and Er<3+> upconversion fluorescent powder is realized, the prepared fluorescent powder has monodispersity, the method is simple in preparing process and enriches a representing manner of the NaGdF4: Yb<3+> and Er<3+> upconversion fluorescent powder, the loose porous NaGdF4: Yb<3+> and Er<3+> upconversion fluorescent powder is desired to be used in a field of preparing an adsorption material, and in combination with characteristics of luminescence of fluorescent powder, the polyacrylic acid-modified ellipsoidal monodisperse NaGdF4: Yb<3+> and Er<3+> upconversion fluorescent powder has broad application prospect in the field of bioluminescence.
Description
Technical field
The invention belongs to the rare earth luminescent material preparing technical field of surface modification, be specifically related to a kind of polyacrylic acid modified ellipsoid shape single dispersing NaGdF
4: Yb
3+, Er
3+the preparation method of up-conversion phosphor.
Background technology
Yb
3+, Er
3+two rare earth nano material mixed is a kind of up-conversion luminescent material efficiently, can long-wavelength excitation light be converted to short wavelength utilizing emitted light, combine the optical characteristics of rare earth material and the small-size effect of nano material, have broad application prospects in luminescence display field and biomarker field.Wherein, gadolinium fluoride sodium (NaGdF
4) there is stable physical and chemical performance, lower phonon energy, be a kind of desirable Yb
3+, Er
3+two up-conversion luminescence matrix of mixing.The fluorescent material of different-shape has different impacts to its performance, thus affects its purposes, by the change of processing condition, can synthesize the NaGdF of different morphologies
4: Yb
3+, Er
3+green up-conversion phosphor, mainly concentrates on NaGdF that is bar-shaped, spherical and nucleocapsid shape to the research of fluorescent material pattern at present
4: Yb
3+, Er
3+upper (reference: HongyuChenetal.SynthesisofBrightlyPEGylatedLuminescentMa gneticUpconversionNanophosphorsforDeepTissueandDualMRIIm aging; Small; 10,160 – 168 (2014); Abel, KeithA.etal.AnalysisoftheShellThicknessDistributiononNaY F4/NaGdF4Core/ShellNanocrystalsbyEELSandEDS, JournalofPhysicalChemistryLetters, 2,85-189 (2011)).The present invention adopts polyacrylic acid to NaGdF
4: Yb
3+, Er
3+modifying surface, because polyacrylic acid is a kind of high molecular weight hydrophilic polymkeric substance, can NaGdF be improved
4: Yb
3+, Er
3+the water-wet behavior of up-conversion phosphor, the fluorescent material simultaneously also has loose porous monodispersed feature, the NaGdF of this loose porous shape
4: Yb
3+, Er
3+also there is not been reported, due to the cell texture that it is special, and combined with fluorescent characteristic, NaGdF
4: Yb
3+, Er
3+also there is very large application space in the preparation field of sorbing material, greatly enriched NaGdF
4: Yb
3+, Er
3+manifestation, have also been enlarged its range of application.
Summary of the invention
The object of the present invention is to provide a kind of polyacrylic acid modified ellipsoid shape single dispersing NaGdF
4: Yb
3+, Er
3+the preparation method of up-conversion phosphor.Obtained fluorescent powder has monodispersity, and the method preparation technology is simple, has enriched NaGdF
4: Yb
3+, Er
3+the manifestation of up-conversion fluorescence powder.The NaGdF of loose porous shape
4: Yb
3+, Er
3+fluorescent material is expected to the preparation field for sorbing material, the characteristics of luminescence of combined with fluorescent powder, the monodispersed NaGdF of this ellipsoid shape
4: Yb
3+, Er
3+up-conversion phosphor also has very large application prospect in bioluminescence field.
For achieving the above object, the present invention adopts following technical scheme:
A kind of polyacrylic acid modified ellipsoid shape single dispersing NaGdF
4: Yb
3+, Er
3+the concrete steps of the preparation method of up-conversion phosphor are as follows:
(1) by chemical formula NaGd
1-x-yyb
xer
yf
4, 0.10≤x≤0.25, in 0.01≤y≤0.05, mole metering ratio of Gd, Yb and Er, takes Gadolinium trinitrate, ytterbium nitrate and Erbium trinitrate;
(2) with molar ratio computing, polyacrylic acid: rare earth ion total amount=3 ~ 8:1000, is dissolved in polyacrylic acid solution by Gadolinium trinitrate, ytterbium nitrate and Erbium trinitrate, mixes, obtain solution A;
(3) with molar ratio computing, NaF: rare earth ion total amount: NH
4hF
2=1 ~ 5:1:5 ~ 9, by NaF and NH
4hF
2be dissolved in ultrapure water, stir, obtain solution B;
(4) solution A and solution B are mixed, with ammoniacal liquor regulator solution pH value to 7 ~ 9, obtain solution C;
(5) transfer to after solution C being stirred in band teflon-lined stainless steel cauldron and seal, 160 ~ 220 DEG C of hydro-thermal reaction 16 ~ 24h, cool to room temperature with the furnace, are precipitated thing;
(6) the throw out centrifugation will obtained, and alternately clean with dehydrated alcohol and ultrapure water, 70 ~ 80 DEG C of dryings, grinding, obtains polyacrylic acid modified loose porous ellipsoid shape and monodispersed NaGdF
4: Yb
3+, Er
3+up-conversion phosphor.
Preferably, in step (1), 0.17≤x≤0.19,0.01≤y≤0.03 and x+y=0.2.
Alternatively, rare earth nitrate used in the method, it can be rare earth nitrate powder product, also can be dry obtained rare earth nitrate powder by being dissolved in by rare earth oxide in nitric acid and then by solution, or directly rare earth oxide is dissolved in nitric acid, then heating make nitric acid volatilize completely after again with the rare earth nitrate solution that pure water constant volume obtains.
Further, the polyacrylic molecular-weight average of step (2) is 100000, and the mass percent of polyacrylic acid solution is 35%, and density is 1.14g/mL.
Preferably, in step (3), the consumption of ultrapure water is 10 ~ 20ml.
Preferably, in step (5), churning time is 15 ~ 30min, and reactor volume compactedness is 70% ~ 80%.
Further, the number of times that step (6) middle dehydrated alcohol and ultrapure water alternately clean is three times.
Preferably, in step (6), time of drying is 8 ~ 24h.
Preferably, when mol ratio polyacrylic acid in rate-determining steps (2): rare earth ion total amount=6:1000, when in step (4), pH value is 9, in palpus rate-determining steps (3), mole metering is than NaF: rare earth ion total amount: NH
4hF
2=5:1:5 ~ 9 or 1 ~ 5:1:9.
Compared with prior art, technique effect of the present invention is:
(1) polyacrylic acid modified ellipsoid shape single dispersing NaGdF of the present invention
4: Yb
3+, Er
3+the synthesis technique of up-conversion phosphor is simple, adopts hydrothermal method, by regulating polyacrylic acid consumption, pH value, NaF, NH
4hF
2and the proportioning between rare earth ion total amount, achieve polyacrylic acid modified loose porous axiolitic NaGdF
4: Yb
3+, Er
3+the synthesis of up-conversion phosphor, has enriched NaGdF
4: Yb
3+, Er
3+the pattern manifestation of up-conversion phosphor, also has certain application prospect in sorbing material field.
(2) polyacrylic acid modified ellipsoid shape single dispersing NaGdF of the present invention
4: Yb
3+, Er
3+up-conversion phosphor adopts polyacrylic acid as surface-modifying agent, and obtained fluorescent powder has monodispersity, makes the NaGdF of surface modification
4: Yb
3+, Er
3+up-conversion phosphor has broad application prospects in the preparation of composite organic-inorganic material.
Accompanying drawing explanation
Fig. 1 is polyacrylic acid modified ellipsoid shape single dispersing NaGdF prepared by the embodiment of the present invention 1 ~ 9
4: Yb
3+, Er
3+the XRD figure spectrum of up-conversion phosphor, as can be seen from the figure, obtained polyacrylic acid modified ellipsoid shape single dispersing NaGdF
4: Yb
3+, Er
3+up-conversion phosphor is the NaGdF of six side's phases
4: Er
3+, Yb
3+;
Fig. 2 is polyacrylic acid modified ellipsoid shape single dispersing NaGdF prepared by the embodiment of the present invention 1
4: Yb
3+, Er
3+the SEM image of up-conversion phosphor;
Fig. 3 is polyacrylic acid modified ellipsoid shape single dispersing NaGdF prepared by the embodiment of the present invention 2
4: Yb
3+, Er
3+the SEM image of up-conversion phosphor;
Fig. 4 is polyacrylic acid modified ellipsoid shape single dispersing NaGdF prepared by the embodiment of the present invention 3
4: Yb
3+, Er
3+the SEM image of up-conversion phosphor;
Fig. 5 is polyacrylic acid modified ellipsoid shape single dispersing NaGdF prepared by the embodiment of the present invention 4
4: Yb
3+, Er
3+the SEM image of up-conversion phosphor;
Fig. 6 is polyacrylic acid modified ellipsoid shape single dispersing NaGdF prepared by the embodiment of the present invention 5
4: Yb
3+, Er
3+the SEM image of up-conversion phosphor;
Fig. 7 is polyacrylic acid modified ellipsoid shape single dispersing NaGdF prepared by the embodiment of the present invention 6
4: Yb
3+, Er
3+the SEM image of up-conversion phosphor;
Fig. 8 is polyacrylic acid modified ellipsoid shape single dispersing NaGdF prepared by the embodiment of the present invention 7
4: Yb
3+, Er
3+the SEM image of up-conversion phosphor;
Fig. 9 is polyacrylic acid modified ellipsoid shape single dispersing NaGdF prepared by the embodiment of the present invention 8
4: Yb
3+, Er
3+the SEM image of up-conversion phosphor;
Figure 10 is polyacrylic acid modified ellipsoid shape single dispersing NaGdF prepared by the embodiment of the present invention 9
4: Yb
3+, Er
3+the SEM image of up-conversion phosphor;
Figure 11 is polyacrylic acid modified ellipsoid shape single dispersing NaGdF prepared by the embodiment of the present invention 10
4: Yb
3+, Er
3+the SEM image of up-conversion phosphor.
Embodiment
embodiment 1
1) measure 3.2mL Gadolinium trinitrate, 1.7mL ytterbium nitrate, 0.3mL Nitrate Solution, be dissolved in 1.5mL polyacrylic acid solution, mix, obtain solution A;
2) take 0.252gNaF, be dissolved in 10mL ultrapure water, add 0.799gNH
4hF
2, stir, obtain solution B;
3) solution A and B are mixed, by ammoniacal liquor adjust ph to 7, obtain solution C;
4) solution C is stirred 15min, after transfer in band teflon-lined stainless steel cauldron and seal, at 200 DEG C after hydro-thermal reaction 16h, cool to room temperature with the furnace, be precipitated thing;
5) by the throw out centrifugation obtained (rotating speed is 8000r/min), centrifugation time is 5min, and replace cleaning 3 times with dehydrated alcohol and ultrapure water, centrifugation, then cleaned material is placed in 80 DEG C of dry 12h of baking oven, grinding obtains polyacrylic acid modified ellipsoid shape single dispersing NaGdF
4: Yb
3+, Er
3+up-conversion phosphor.
embodiment 2
1) measure 3.2mL Gadolinium trinitrate, 1.7mL ytterbium nitrate, 0.3mL Nitrate Solution, be dissolved in 1.5mL polyacrylic acid solution, mix, obtain solution A;
2) take 0.252gNaF, be dissolved in 10mL ultrapure water, add 0.799gNH
4hF
2, stir, obtain solution B;
3) solution A and B are mixed, by ammoniacal liquor adjust ph to 9, obtain solution C;
4) solution C is stirred 15min, after transfer in band teflon-lined stainless steel cauldron and seal, at 200 DEG C after hydro-thermal reaction 16h, cool to room temperature with the furnace, be precipitated thing;
5) by the throw out centrifugation obtained (rotating speed is 8000r/min), centrifugation time is 5min, and replace cleaning 3 times with dehydrated alcohol and ultrapure water, centrifugation, then cleaned material is placed in 80 DEG C of dry 12h of baking oven, grinding obtains polyacrylic acid modified ellipsoid shape single dispersing NaGdF
4: Yb
3+, Er
3+up-conversion phosphor.
embodiment 3
1) measure 3.2mL Gadolinium trinitrate, 1.7mL ytterbium nitrate, 0.3mL Nitrate Solution, be dissolved in 3mL polyacrylic acid solution, mix, obtain solution A;
2) take 0.252gNaF, be dissolved in 10mL ultrapure water, add 0.799gNH
4hF
2, stir, obtain solution B;
3) solution A and B are mixed, by ammoniacal liquor adjust ph to 7, obtain solution C;
4) solution C is stirred 15min, after transfer in band teflon-lined stainless steel cauldron and seal, at 200 DEG C after hydro-thermal reaction 16h, cool to room temperature with the furnace, be precipitated thing;
5) by the throw out centrifugation obtained (rotating speed is 8000r/min), centrifugation time is 5min, and replace cleaning 3 times with dehydrated alcohol and ultrapure water, centrifugation, then cleaned material is placed in 80 DEG C of dry 12h of baking oven, grinding obtains polyacrylic acid modified ellipsoid shape single dispersing NaGdF
4: Yb
3+, Er
3+up-conversion phosphor.
embodiment 4
1) measure 3.2mL Gadolinium trinitrate, 1.7mL ytterbium nitrate, 0.3mL Nitrate Solution, be dissolved in 4.5mL polyacrylic acid solution, mix, obtain solution A;
2) take 0.252gNaF, be dissolved in 10mL ultrapure water, add 0.799gNH
4hF
2, stir, obtain solution B;
3) solution A and B are mixed, by ammoniacal liquor adjust ph to 7, obtain solution C;
4) solution C is stirred 15min, after transfer in band teflon-lined stainless steel cauldron and seal, at 200 DEG C after hydro-thermal reaction 16h, cool to room temperature with the furnace, be precipitated thing;
5) by the throw out centrifugation obtained (rotating speed is 8000r/min), centrifugation time is 5min, and replace cleaning 3 times with dehydrated alcohol and ultrapure water, centrifugation, then cleaned material is placed in 80 DEG C of dry 12h of baking oven, grinding obtains polyacrylic acid modified ellipsoid shape single dispersing NaGdF
4: Yb
3+, Er
3+up-conversion phosphor.
embodiment 5
1) measure 3.2mL Gadolinium trinitrate, 1.7mL ytterbium nitrate, 0.3mL Nitrate Solution, be dissolved in 4.5mL polyacrylic acid solution, mix, obtain solution A;
2) take 0.252gNaF, be dissolved in 10mL ultrapure water, add 0.799gNH
4hF
2, stir, obtain solution B;
3) solution A and B are mixed, by ammoniacal liquor adjust ph to 9, obtain solution C;
4) solution C is stirred 15min, after transfer in band teflon-lined stainless steel cauldron and seal, at 200 DEG C after hydro-thermal reaction 16h, cool to room temperature with the furnace, be precipitated thing;
5) by the throw out centrifugation obtained (rotating speed is 8000r/min), centrifugation time is 5min, and replace cleaning 3 times with dehydrated alcohol and ultrapure water, centrifugation, then cleaned material is placed in 80 DEG C of dry 12h of baking oven, grinding obtains polyacrylic acid modified ellipsoid shape single dispersing NaGdF
4: Yb
3+, Er
3+up-conversion phosphor.
embodiment 6
1) measure 3.2mL Gadolinium trinitrate, 1.7mL ytterbium nitrate, 0.3mL Nitrate Solution, be dissolved in 3mL polyacrylic acid solution, mix, obtain solution A;
2) take 0.42gNaF, be dissolved in 10mL ultrapure water, add 0.57gNH
4hF
2, stir, obtain solution B;
3) solution A and B are mixed, by ammoniacal liquor adjust ph to 9, obtain solution C;
4) solution C is stirred 15min, after transfer in band teflon-lined stainless steel cauldron and seal, at 200 DEG C after hydro-thermal reaction 16h, cool to room temperature with the furnace, be precipitated thing;
5) by the throw out centrifugation obtained (rotating speed is 8000r/min), centrifugation time is 5min, and replace cleaning 3 times with dehydrated alcohol and ultrapure water, centrifugation, then cleaned material is placed in 80 DEG C of dry 12h of baking oven, grinding obtains polyacrylic acid modified ellipsoid shape single dispersing NaGdF
4: Yb
3+, Er
3+up-conversion phosphor.
embodiment 7
1) measure 3.2mL Gadolinium trinitrate, 1.7mL ytterbium nitrate, 0.3mL Nitrate Solution, be dissolved in 3mL polyacrylic acid solution, mix, obtain solution A;
2) take 0.42gNaF, be dissolved in 10mL ultrapure water, add 0.799gNH
4hF
2, stir, obtain solution B;
3) solution A and B are mixed, by ammoniacal liquor adjust ph to 9, obtain solution C;
4) solution C is stirred 15min, after transfer in band teflon-lined stainless steel cauldron and seal, at 200 DEG C after hydro-thermal reaction 16h, cool to room temperature with the furnace, be precipitated thing;
5) by the throw out centrifugation obtained (rotating speed is 8000r/min), centrifugation time is 5min, and replace cleaning 3 times with dehydrated alcohol and ultrapure water, centrifugation, then cleaned material is placed in 80 DEG C of dry 12h of baking oven, grinding obtains polyacrylic acid modified ellipsoid shape single dispersing NaGdF
4: Yb
3+, Er
3+up-conversion phosphor.
embodiment 8
1) measure 3.2mL Gadolinium trinitrate, 1.7mL ytterbium nitrate, 0.3mL Nitrate Solution, be dissolved in 3mL polyacrylic acid solution, mix, obtain solution A;
2) take 0.42gNaF, be dissolved in 10mL ultrapure water, add 1.027gNH
4hF
2, stir, obtain solution B;
3) solution A and B are mixed, by ammoniacal liquor adjust ph to 9, obtain solution C;
4) solution C is stirred 15min, after transfer in band teflon-lined stainless steel cauldron and seal, at 200 DEG C after hydro-thermal reaction 16h, cool to room temperature with the furnace, be precipitated thing;
5) by the throw out centrifugation obtained (rotating speed is 8000r/min), centrifugation time is 5min, and replace cleaning 3 times with dehydrated alcohol and ultrapure water, centrifugation, then cleaned material is placed in 80 DEG C of dry 12h of baking oven, grinding obtains polyacrylic acid modified ellipsoid shape single dispersing NaGdF
4: Yb
3+, Er
3+up-conversion phosphor.
embodiment 9
1) measure 3.2mL Gadolinium trinitrate, 1.7mL ytterbium nitrate, 0.3mL Nitrate Solution, be dissolved in 3mL polyacrylic acid solution, mix, obtain solution A;
2) take 0.252gNaF, be dissolved in 10mL ultrapure water, add 1.027gNH
4hF
2, stir, obtain solution B;
3) solution A and B are mixed, by ammoniacal liquor adjust ph to 9, obtain solution C;
4) solution C is stirred 15min, after transfer in band teflon-lined stainless steel cauldron and seal, at 200 DEG C after hydro-thermal reaction 16h, cool to room temperature with the furnace, be precipitated thing;
5) by the throw out centrifugation obtained (rotating speed is 8000r/min), centrifugation time is 5min, and replace cleaning 3 times with dehydrated alcohol and ultrapure water, centrifugation, then cleaned material is placed in 80 DEG C of dry 12h of baking oven, grinding obtains polyacrylic acid modified ellipsoid shape single dispersing NaGdF
4: Yb
3+, Er
3+up-conversion phosphor.
embodiment 10
1) measure 3.2mL Gadolinium trinitrate, 1.7mL ytterbium nitrate, 0.3mL Nitrate Solution, be dissolved in 3mL polyacrylic acid solution, mix, obtain solution A;
2) take 0.084gNaF, be dissolved in 10mL ultrapure water, add 1.027gNH
4hF
2, stir, obtain solution B;
3) solution A and B are mixed, by ammoniacal liquor adjust ph to 9, obtain solution C;
4) solution C is stirred 15min, after transfer in band teflon-lined stainless steel cauldron and seal, at 200 DEG C after hydro-thermal reaction 16h, cool to room temperature with the furnace, be precipitated thing;
5) by the throw out centrifugation obtained (rotating speed is 8000r/min), centrifugation time is 5min, and replace cleaning 3 times with dehydrated alcohol and ultrapure water, centrifugation, then cleaned material is placed in 80 DEG C of dry 12h of baking oven, grinding obtains polyacrylic acid modified ellipsoid shape single dispersing NaGdF
4: Yb
3+, Er
3+up-conversion phosphor.
The foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (6)
1. a polyacrylic acid modified ellipsoid shape single dispersing NaGdF
4: Yb
3+, Er
3+the preparation method of up-conversion phosphor, is characterized in that: concrete steps are as follows:
(1) by chemical formula NaGd
1-x-yyb
xer
yf
4, 0.10≤x≤0.25, in 0.01≤y≤0.05, mole metering ratio of Gd, Yb and Er, takes Gadolinium trinitrate, ytterbium nitrate and Erbium trinitrate;
(2) with molar ratio computing, polyacrylic acid: rare earth ion total amount=3 ~ 8:1000, is dissolved in polyacrylic acid solution by Gadolinium trinitrate, ytterbium nitrate and Erbium trinitrate, mixes, obtain solution A;
(3) with molar ratio computing, NaF: rare earth ion total amount: NH
4hF
2=1 ~ 5:1:5 ~ 9, by NaF and NH
4hF
2be dissolved in ultrapure water, stir, obtain solution B;
(4) solution A and solution B are mixed, with ammoniacal liquor regulator solution pH value to 7 ~ 9, obtain solution C;
(5) transfer to after solution C being stirred in band teflon-lined stainless steel cauldron and seal, 160 ~ 220 DEG C of hydro-thermal reaction 16 ~ 24h, cool to room temperature with the furnace, are precipitated thing;
(6) the throw out centrifugation will obtained, and with dehydrated alcohol and ultrapure water alternately cleaning, dry, grind, obtain polyacrylic acid modified loose porous ellipsoid shape and monodispersed NaGdF
4: Yb
3+, Er
3+up-conversion phosphor.
2. method according to claim 1, it is characterized in that: the rare earth nitrate of step (1) is rare earth nitrate powder product, or dry obtained rare earth nitrate powder by being dissolved in by rare earth oxide in nitric acid and then by solution, or directly rare earth oxide is dissolved in nitric acid, then heating make nitric acid volatilize completely after again with the rare earth nitrate solution that pure water constant volume obtains.
3. method according to claim 1, is characterized in that: the polyacrylic molecular-weight average of step (2) is 100000, and the mass percent of polyacrylic acid solution is 35%, and density is 1.14g/mL.
4. method according to claim 1, is characterized in that: in step (3), ultrapure water consumption is 10 ~ 20mL.
5. method according to claim 1, is characterized in that: in step (5), churning time is 15 ~ 30 minutes, and reactor volume compactedness is 70% ~ 80%.
6. method according to claim 1, is characterized in that: the time of drying of step (6) is 8 ~ 24h.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110746972A (en) * | 2019-10-22 | 2020-02-04 | 岭南师范学院 | Preparation method of calcium-doped fluorescence-enhanced water-soluble NaErF4 Yb red light up-conversion nano material |
| CN111267438A (en) * | 2020-01-20 | 2020-06-12 | 长春理工大学 | Up-down conversion luminescence magnetic multiple anisotropic conductive stepped Janus film |
| CN115557528A (en) * | 2022-09-29 | 2023-01-03 | 广州工程技术职业学院 | Rare earth doped up-conversion luminescent powder and preparation method thereof |
| CN116265568A (en) * | 2022-09-09 | 2023-06-20 | 南京市第一医院 | Green fluorescent infrared up-conversion mesoporous nanomaterial and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110746972A (en) * | 2019-10-22 | 2020-02-04 | 岭南师范学院 | Preparation method of calcium-doped fluorescence-enhanced water-soluble NaErF4 Yb red light up-conversion nano material |
| CN110746972B (en) * | 2019-10-22 | 2022-06-14 | 岭南师范学院 | Preparation method of calcium-doped fluorescence-enhanced water-soluble NaErF4 Yb red light up-conversion nano material |
| CN111267438A (en) * | 2020-01-20 | 2020-06-12 | 长春理工大学 | Up-down conversion luminescence magnetic multiple anisotropic conductive stepped Janus film |
| CN116265568A (en) * | 2022-09-09 | 2023-06-20 | 南京市第一医院 | Green fluorescent infrared up-conversion mesoporous nanomaterial and preparation method thereof |
| CN115557528A (en) * | 2022-09-29 | 2023-01-03 | 广州工程技术职业学院 | Rare earth doped up-conversion luminescent powder and preparation method thereof |
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