NL2033896B1 - Double-rare-earth-metal-center white-light fluorescent powder and preparation method and application thereof - Google Patents
Double-rare-earth-metal-center white-light fluorescent powder and preparation method and application thereof Download PDFInfo
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- NL2033896B1 NL2033896B1 NL2033896A NL2033896A NL2033896B1 NL 2033896 B1 NL2033896 B1 NL 2033896B1 NL 2033896 A NL2033896 A NL 2033896A NL 2033896 A NL2033896 A NL 2033896A NL 2033896 B1 NL2033896 B1 NL 2033896B1
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- fluorescent powder
- white light
- rare earth
- light fluorescent
- double
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- 239000000843 powder Substances 0.000 title claims abstract description 55
- 238000002360 preparation method Methods 0.000 title abstract description 6
- 239000002904 solvent Substances 0.000 claims abstract description 15
- 239000003446 ligand Substances 0.000 claims abstract description 9
- -1 p—carboxyphenyl Chemical group 0.000 claims abstract description 8
- 239000000126 substance Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 13
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 9
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 9
- 150000002910 rare earth metals Chemical group 0.000 claims description 9
- 239000013078 crystal Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- ULJUVCOAZNLCJZ-UHFFFAOYSA-K trichloroterbium;hexahydrate Chemical compound O.O.O.O.O.O.[Cl-].[Cl-].[Cl-].[Tb+3] ULJUVCOAZNLCJZ-UHFFFAOYSA-K 0.000 claims description 5
- AWDWVTKHJOZOBQ-UHFFFAOYSA-K europium(3+);trichloride;hexahydrate Chemical compound O.O.O.O.O.O.[Cl-].[Cl-].[Cl-].[Eu+3] AWDWVTKHJOZOBQ-UHFFFAOYSA-K 0.000 claims description 4
- NGJJZCPADSICRI-UHFFFAOYSA-N 4-[[4,6-bis(4-carboxyanilino)-1,3,5-triazin-2-yl]amino]benzoic acid Chemical compound C1=CC(C(=O)O)=CC=C1N=C(NC(=NC=1C=CC(=CC=1)C(O)=O)N1)NC1=NC1=CC=C(C(O)=O)C=C1 NGJJZCPADSICRI-UHFFFAOYSA-N 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 7
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 239000011159 matrix material Substances 0.000 abstract description 2
- 238000004729 solvothermal method Methods 0.000 abstract 1
- 229910052693 Europium Inorganic materials 0.000 description 4
- 229910052771 Terbium Inorganic materials 0.000 description 4
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical group [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 description 4
- GZCRRIHWUXGPOV-UHFFFAOYSA-N terbium atom Chemical group [Tb] GZCRRIHWUXGPOV-UHFFFAOYSA-N 0.000 description 4
- 238000009877 rendering Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241001663154 Electron Species 0.000 description 1
- 239000007983 Tris buffer Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229940068911 chloride hexahydrate Drugs 0.000 description 1
- 238000002447 crystallographic data Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- VOAPTKOANCCNFV-UHFFFAOYSA-N hexahydrate;hydrochloride Chemical compound O.O.O.O.O.O.Cl VOAPTKOANCCNFV-UHFFFAOYSA-N 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 238000009616 inductively coupled plasma Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000005855 radiation Effects 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
- C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F5/00—Compounds containing elements of Groups 3 or 13 of the Periodic Table
- C07F5/003—Compounds containing elements of Groups 3 or 13 of the Periodic Table without C-Metal linkages
-
- 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
- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/18—Metal complexes
- C09K2211/182—Metal complexes of the rare earth metals, i.e. Sc, Y or lanthanide
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Luminescent Compositions (AREA)
Abstract
The present disclosure provides a double—rare—earth—metal—center white—light fluorescent powder and a preparation method thereof. The chemical formula of the double—rare—earth—metal—center white— light fluorescent powder is EUQgTbLg (TATAB)2'solvents]}n, wherein 5 TATAB is a 2, 4, 6—tri [(p—carboxyphenyl) amino]—l, 3, 5—triazine anionic ligand, and solvents are solvent molecules. The material is prepared by a solvothermal method. Near ultraviolet light is adopted to excite fluorescent powder (single—phase fluorescent powder or single—matrix fluorescent powder) to emit a plurality of 10 fluorescence bands to be compounded to form white light, and the CIE coordinates of the white light are (0.317, 0.287), which are approximate to the saturated CIE coordinates of the white light; and therefore, the fluorescent powder can be used as a white—light material without the assistance of other fluorescent powder, can 15 overcome the defect of the single—phase white—light fluorescent powder in an existing luminescent material, and is expected to be practically applied to white—light LEDs. (+ Fig. l) 20
Description
DOUBLE-RARE-EARTH-METAL-CENTER WHITE-LIGHT FLUORESCENT POWDER AND
PREPARATION METHOD AND APPLICATION THEREOF
The present disclosure relates to a double-rare-earth-metal- center white-light fluorescent powder and a preparation method and an application thereof, and belongs to the technical field of white-light fluorescent powder.
White light emitting diodes (WLEDs) have been widely used in the field of next-generation sclid-state lighting due to their small size, energy saving, environmental friendliness, long life, and high luminous efficiency; therefore WLEDs) are called the fourth-generation lighting sources by industry insiders.
At present, there are three main ways to realize WLED:the first way is to excite yellow fluorescent powder using blue LED chips; the blue light emitted by chips and the yellow light emit- ted by the fluorescent powder are combined to obtain a white light, but this method lacks the red light component, the color temperature is low, and the color rendering of the light source is poor. The second method is to excite green and red fluorescent powder through the blue LEC chips, and coordinate to generate the white light; this method requires four electrodes, three driving voltages, and the structure is more complicated. The third method is to excite blue, green, and red primary color fluorescent pow- ders using the near-ultraviolet LED chips; this method is easier to obtain white light with the same color, and the light color can be determined by the ratio of fluorescent powder, with the ad- vantages of high color rendering, adjustable light color and color temperature. For example, CN111233902A discloses a rare-earth eu- ropium complex for near-ultraviolet white light LED, a red light
LED device, a white light fluorescent powder and a white light LED device.
Although the above three methods can obtain white light,
there are disadvantages such as insufficient materials for selec- tion, different ratios between various fluorescent powders and different aging rates, and backward preparation methods, which lead to problems such as influence on the lighting efficiency and color restoration, resulting in incompliance with the require- ments of WLEDs.
An object of the present disclosure is to provide a double- rare-earth-metal-center white-light flucrescent powder and a prep- aration method thereof to solve multiple technical problems in re- alizing white light with consistent color in the Background Art.
To achieve the technical solutions, the present disclosure adopts the following technical solutions:a double-rare-earth- metal-center white-light fluorescent powder is provided, and the chemical formula of the double-rare-earth-metal-center white-light fluorescent powder is Eu, ;Tbi s(TATAB): solvents] },;
TATAB is a 2, 4, 6-tri [(p-carboxyphenyl) amino]-1, 3, 5- triazine anionic ligand, and solvents are solvent molecules; n is a natural number from 1 to positive infinity; Eu is europium; and
Tb is terbium.
The double-rare-earth-metal-center white-light fluorescent powder belongs to a monoclinic system, its Spatial cluster is
P21/c, and the cell parameters are as follows:a=29.1265(8) A, b= 23.4683(5) A, c= 15.6643(4) A, o= 90°, B= 103.674°, y= 90°.
A method for preparing the double-rare-earth-metal-center white-light fluorescent powder comprises the following steps: mixing rare-earth salt and the 2, 4, 6-tri [{p-carboxyphenyl) amino]-1, 3, 5-triazine ligand in a mass ratio of (1:1)-(1:3) in
N, N-dimethylformamide thoroughly, and curing at a temperature of 60-150°C for 24-72 h to obtain colorless bulk crystals, to obtain the double-rare-earth-metal-center white-light fluorescent powder.
The rare-earth salt comprises a mixture of terbium chloride hexahydrate and europium chloride hexahydrate.
The dosage ratio of the rare-earth salt to a 2, 4, é-tri [{p- carboxyphenyl) amino]-1, 3, 5-triazine ligand mixture to the sol- vents is 100 mg: (500 mg-100 mg):2,500 mg.
The mass ratio of terbium chloride hexahydrate to europium chloride hexahydrate in the mixture is 9:1.
The double-rare-earth-metal-center white-light fluorescent powder is used in the field of white-light fluorescent powder, and emits white light, and its CIE coordinates are 0.317, 0.287.
The present disclosure has the following beneficial effects: near ultraviolet light is adopted to excite fluorescent powder {single-phase fluorescent powder or single-matrix fluorescent pow- der) to emit a plurality of fluorescence bands to be compounded to form white light, other fluorescent powder for assisting is not needed, and the defect that single-phase white light fluorescent powder is adopted in an existing luminescent material can be over- come.
FIG. 1 is a CIE coordinate diagram of a double-rare-earth- metal-center white-light fluorescent powder of the present disclo- sure.
In this example, a double-rare-earth-metal-center white-light fluorescent powder is provided, with a chemical formula of
EU; 2Tb; s (TATAB). solvents] },, wherein TATAB is a 2, 4, &-tri [(p- carboxyphenyl) amino]-1, 3, 5-triazine anionic ligand, and sol- vents are solvent molecules.
In this example, a method for preparing the double-rare- earth-metal-center white-light fluorescent powder comprises the following steps: dissolve 90 mg of terbium chloride hexahydrate, 10 mg of eu- ropium chloride hexahydrate and 200 mg of 2,4,6-tris|[ (p- carboxyphenyl)amino]-1,3,5-triazine ligand in 600 mg of N,N- dime- thylformamide, and then perform curing treatment at a temperature of 90° C for 36 h to obtain a colorless bulk crystal, namely the double-rare-earth-metal-center white-light fluorescent powder.
The double-rare-earth-metal-center white-light fluorescent powder prepared in this example is characterized as follows: (1) Structure determination of the double-rare-earth-metal-
center white-light fluorescent powder in this example:
The crystal structure is determined by a Supernova type X-ray single crystal diffractometer, graphite monochromatized Mo-Ka ray (A=0.71073A) is used as an incident radiation source, diffraction points are collected in an @o-69 scanning mode, a least square meth- od is carried out for correcting to obtain cell parameters, the crystal structure is solved from a difference value Fourier elec- tron density map by using an SHELXL-97 direct method, and correct- ed by Lorentz and polarization effect.
All H atoms are synthesized by the difference value Fourier and are determined by calculation of ideal positions, and detailed crystal determination (removal of solvent molecules) data is shown in Table 1.
Table 1 Crystallographic data of double-rare-earth-metal- center white-light fluorescent powder material
EE
[Lattice parameters a= 29.1265(8) A, b= 23.4683(5) A, c= 15.6643(4) A,
TT SSeS ee Je ee {2) Determination of europium and terbium content in double- rare-earth-metal-center white-light fluorescent powder in this ex- ample:
The europium and terbium content is determined by a Varion- 720 inductively coupled plasma, the data is shown in Table 2.
Table 2 Europium and terbium content in double-rare-earth- metal-center white-light fluorescent powder fe (3) CIE coordinates of double-rare-earth-metal-center white- light fluorescent powder in the embodiment: 5 FIG. 1 shows the CIE coordinates of the double-rare-earth- metal-center white-light fluorescent powder in the embodiment; as shown in the figure, the CIE coordinates of the material is (0.317, 0.287), and the CIE coordinates are in a white light area and are close to saturated CIE coordinates of the white light.
Therefore, the fluorescent powder can be used as a white-light fluorescent powder.
Claims (6)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210701182.XA CN114874243A (en) | 2022-06-21 | 2022-06-21 | Double-rare-earth metal center white light fluorescent powder and preparation method and application thereof |
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| NL2033896B1 true NL2033896B1 (en) | 2024-01-08 |
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| NL2033896A NL2033896B1 (en) | 2022-06-21 | 2023-01-02 | Double-rare-earth-metal-center white-light fluorescent powder and preparation method and application thereof |
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| NL (1) | NL2033896B1 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111233902A (en) | 2020-03-06 | 2020-06-05 | 浙江农林大学暨阳学院 | Rare earth europium complex for near ultraviolet white light LED, red light LED device, white light fluorescent powder and white light LED device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104804027B (en) * | 2015-04-24 | 2016-11-30 | 南开大学 | A kind of rare earth metal organic framework materials and preparation method and application |
| CN106544010A (en) * | 2016-10-26 | 2017-03-29 | 上海应用技术大学 | A kind of preparation method of MOF bases white emitting fluorescent powder |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111233902A (en) | 2020-03-06 | 2020-06-05 | 浙江农林大学暨阳学院 | Rare earth europium complex for near ultraviolet white light LED, red light LED device, white light fluorescent powder and white light LED device |
Non-Patent Citations (1)
| Title |
|---|
| YAO JIN ET AL: "Breathing Europium-Terbium Co-doped Luminescent MOF as a Broad-Range Ratiometric Thermometer with a Contrasting Temperature-Intensity Relationship", ACS OMEGA, vol. 3, no. 5, 29 May 2018 (2018-05-29), US, pages 5754 - 5760, XP093051623, ISSN: 2470-1343, DOI: 10.1021/acsomega.8b00199 * |
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