CN104151337B - As aromatic carboxylic acid europium (III) title complex and preparation method thereof of luminescent material - Google Patents
As aromatic carboxylic acid europium (III) title complex and preparation method thereof of luminescent material Download PDFInfo
- Publication number
- CN104151337B CN104151337B CN201410335932.1A CN201410335932A CN104151337B CN 104151337 B CN104151337 B CN 104151337B CN 201410335932 A CN201410335932 A CN 201410335932A CN 104151337 B CN104151337 B CN 104151337B
- Authority
- CN
- China
- Prior art keywords
- iii
- carboxylic acid
- aromatic carboxylic
- europium
- title complex
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Nitrogen Condensed Heterocyclic Rings (AREA)
Abstract
The invention discloses a kind of aromatic carboxylic acid europium (III) title complex as luminescent material and preparation method thereof.This aromatic carboxylic acid europium (III) coordination chemistry formula is: Eu (C
14h
9o
3)
3(Phen)
2, its crystalline structure is oblique system, and unit cell parameters is: a=2.2577 (4) nm, b=1.23484 (19) nm, c=1.8789 (3) nm, β=94.918 (3) °, V=5.2189 (14) nm
3, Dc=1.512g/cm
3, Z=4, μ (MoK α)=1.269mm
-1, F (000)=2408, final discrepancy factor R
1=0.0433, wR
2=0.1038.This aromatic carboxylic acid europium (III) title complex has fluorescence property, when excitation wavelength is 254nm, described aromatic carboxylic acid europium (III) title complex three with sending strong red fluorescence under ultraviolet lamp; When excitation wavelength is 396nm, described aromatic carboxylic acid europium (III) title complex has obvious fluorescence emission peak respectively at 597nm and 615nm place.The thing of aromatic carboxylic acid europium (III) title complex provided by the invention mutually evenly, purity is high, crystal formation good, fluorescence property is excellent; And preparation technology is simple, synthesis temperature is low, energy consumption is low.
Description
Technical field
The present invention relates to rare earth compounding technical field, be specifically related to a kind of aromatic carboxylic acid europium (III) title complex as luminescent material and preparation method thereof.
Background technology
Rare earth element, due to its special electronic structure, has the performances such as excellent optical, electrical, magnetic, is described as the treasure-house of novel material.Rare-earth luminescent material, occupies very consequence in Rare Earth Functional Materials.Wherein, organic light-emitting rare earth complexe is considered to the rare earth luminescent material that a class has wide application prospect.
Europium complex in organic light-emitting rare earth complexe has stronger Eu
3+characteristic fluorescence, and have that purity of color is high, chemical stability good and theoretical internal quantum efficiency can reach the advantage such as 100%, become the study hotspot in rare earth photoelectricity functional material.About the preparation of rare-earth luminescent material, the method of dry method in the past and Moist chemical synthesis fluor and current industrial production fluor all adopts traditional high temperature solid phase synthesis, its advantage is that the crystal mass of crystallite is excellent, few surface defects, luminous efficiency are high, and shortcoming to be synthesis temperature high, energy consumption is high, large and the skewness of particle size, easily there is dephasign, the fluorescent material that this traditional method prepares can not meet the demand of industrial development to fluorescent material in high-technology field.
Therefore, the development of new rare earth luminescent material will be that people continue the direction of research and development to fluorescent material field.
Summary of the invention
The object of the invention is to overcome above shortcoming, there is provided a kind of aromatic carboxylic acid europium (III) title complex as luminescent material and preparation method thereof, the thing of this aromatic carboxylic acid europium (III) title complex mutually evenly, purity is high, crystal formation good, fluorescence property is excellent; And preparation technology is simple, synthesis temperature is low, energy consumption is low.
Technical scheme of the present invention is:
As aromatic carboxylic acid europium (III) title complex for luminescent material, its chemical formula is: Eu (C
14h
9o
3)
3(Phen)
2the crystalline structure of described aromatic carboxylic acid europium (III) title complex is oblique system, unit cell parameters is: a=2.2577 (4) nm, b=1.23484 (19) nm, c=1.8789 (3) nm, β=94.918 (3) °, V=5.2189 (14) nm
3, Dc=1.512g/cm
3, Z=4, μ (MoK α)=1.269mm
-1, F (000)=2408, final discrepancy factor R
1=0.0433, wR
2=0.1038.Wherein, a, b, c represent that three groups of ribs of structure cell are long respectively; Angle between the rib that β represents structure cell; V represents unit cell volume; Dc represents structure cell density; Z represents the unit number in structure cell; μ (MoK α) represents uptake factor; F (000) represents electronic number.
Further, the structural formula of described aromatic carboxylic acid europium (III) title complex is:
Further, described aromatic carboxylic acid europium (III) title complex has fluorescence property, when excitation wavelength is 254nm, described aromatic carboxylic acid europium (III) title complex three with sending strong red fluorescence under ultraviolet lamp; When excitation wavelength is 396nm, described aromatic carboxylic acid europium (III) title complex has obvious fluorescence emission peak respectively at 597nm and 615nm place.
Further, aromatic carboxylic acid europium (III) title complex is better than the fluorescence emission peak at 597nm place at the fluorescence emission peak at 615nm place.
A kind of preparation method of above-mentioned aromatic carboxylic acid europium (III) title complex, comprises the following steps:
A, by 2-benzoylbenzoic acid, 1,10-phenanthroline, europium hydroxide are by (2-3): 1:(1-2) mol ratio join in reactor, stir, and add water and N, the mixed solvent of dinethylformamide composition, wherein, water and N, the volume ratio of dinethylformamide is (1.5-3): 1, and every 1mmol europium hydroxide amount of water is 6.9ml;
B, said mixture is placed in loft drier reacts 6-8h, control temperature is 140-160 DEG C;
C, the solution cooling by step b, filtration, filtrate covers the narrow meshed antistaling film of one deck, naturally volatilizees under being placed in room temperature, until separate out aromatic carboxylic acid europium (III) complex colorless crystal.
Further, in described step a, the mol ratio of 2-benzoylbenzoic acid, 1,10-phenanthroline, europium hydroxide is 2.3:1:1.8, and in mixed solvent, the volume ratio of water and DMF is 2:1.
The application of a kind of above-mentioned aromatic carboxylic acid europium (III) title complex in luminescent material.
The preparation method of aromatic carboxylic acid europium (III) title complex provided by the invention, by optimized choice part, and adopt solvent structure, controlling temperature is 140-160 DEG C, and compared with traditional high temperature solid phase synthesis, synthesis temperature greatly reduces, and power consumption is few; New aromatic carboxylic acid europium (III) complex crystal of synthesis is obtained by evaporative crystallization, and separating-purifying is easy, and product thing mutually evenly, purity is high, crystal formation good, productive rate is higher.
Aromatic carboxylic acid europium (III) title complex provided by the invention, has excellent fluorescence property.Three with under ultraviolet lamp, when excitation wavelength is 254nm, this aromatic carboxylic acid europium (III) title complex sends strong red fluorescence; When excitation wavelength is 396nm, title complex has obvious fluorescence emission peak respectively at 597nm and 615nm place, and the fluorescence emission peak at 615nm place is the strongest.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the molecular structural formula of aromatic carboxylic acid europium (III) title complex of the present invention;
Fig. 2 is the coordination polyhedron structure iron of europium (III) ion in aromatic carboxylic acid europium (III) title complex of the present invention;
Fig. 3 be aromatic carboxylic acid europium (III) title complex of the present invention three with under ultraviolet lamp, when excitation wavelength is 254nm, the strong red fluorescence figure sent;
Fig. 4 is aromatic carboxylic acid europium (III) title complex of the present invention fluorescence emission spectrogram at room temperature.
Embodiment
Be clearly and completely described to the technical scheme in the embodiment of the present invention below, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
One, preparation method's embodiment of aromatic carboxylic acid europium (III) title complex
Embodiment 1
Synthetic method
A, by 2-benzoylbenzoic acid, 1,10-phenanthroline, europium hydroxide join in reactor by the mol ratio of 2:1:1, stir, and add water and N, the mixed solvent of dinethylformamide composition makes it to dissolve, wherein, and water and N, the volume ratio of dinethylformamide is 1.5:1, and every 1mmol europium hydroxide amount of water is 6.9ml;
B, said mixture is placed in loft drier reacts 6h, control temperature is 140 DEG C;
C, the solution cooling by step b, filtration, filtrate covers the narrow meshed antistaling film of one deck, naturally volatilizees under being placed in room temperature, until separate out aromatic carboxylic acid europium (III) complex colorless crystal.
As calculated, the productive rate of aromatic carboxylic acid europium (III) complex colorless crystal is 32%.
Embodiment 2
Synthetic method
A, by 2-benzoylbenzoic acid, 1,10-phenanthroline, europium hydroxide join in reactor by the mol ratio of 2:1:2, stir, and add water and N, the mixed solvent of dinethylformamide composition makes it to dissolve, wherein, and water and N, the volume ratio of dinethylformamide is 2:1, and every 1mmol europium hydroxide amount of water is 6.9ml;
B, said mixture is placed in electric drying oven with forced convection reacts 8h, control temperature is 150 DEG C;
C, the solution cooling by step b, filtration, filtrate covers the narrow meshed antistaling film of one deck, naturally volatilizees under being placed in room temperature, until separate out aromatic carboxylic acid europium (III) complex colorless crystal.
As calculated, the productive rate of aromatic carboxylic acid europium (III) complex colorless crystal is 30%.
Embodiment 3
Synthetic method
A, by 2-benzoylbenzoic acid, 1,10-phenanthroline, europium hydroxide join in reactor by the mol ratio of 3:1:1, stir, and add water and N, the mixed solvent of dinethylformamide composition, wherein, water and N, the volume ratio of dinethylformamide is 3:1, and every 1mmol europium hydroxide amount of water is 6.9ml;
B, said mixture is placed in electric drying oven with forced convection reacts 8h, control temperature is 155 DEG C;
C, the solution cooling by step b, filtration, filtrate covers the narrow meshed antistaling film of one deck, naturally volatilizees under being placed in room temperature, until separate out aromatic carboxylic acid europium (III) complex colorless crystal.
As calculated, the productive rate of aromatic carboxylic acid europium (III) complex colorless crystal is 29%.
Embodiment 4
Synthetic method
A, by 2-benzoylbenzoic acid, 1,10-phenanthroline, europium hydroxide join in reactor by the mol ratio of 3:1:2, stir, and add water and N, the mixed solvent of dinethylformamide composition, wherein, water and N, the volume ratio of dinethylformamide is 2.5:1, and every 1mmol europium hydroxide amount of water is 6.9ml;
B, said mixture is placed in electric drying oven with forced convection reacts 8h, control temperature is 160 DEG C;
C, the solution cooling by step b, filtration, filtrate covers the narrow meshed antistaling film of one deck, naturally volatilizees under being placed in room temperature, until separate out aromatic carboxylic acid europium (III) complex colorless crystal.
As calculated, the productive rate of aromatic carboxylic acid europium (III) complex colorless crystal is 28%.
Embodiment 5
Synthetic method
A, by 2-benzoylbenzoic acid, 1,10-phenanthroline, europium hydroxide join in reactor by the mol ratio of 2.3:1:1.8, stir, and add water and N, the mixed solvent of dinethylformamide composition, wherein, water and N, the volume ratio of dinethylformamide is 2:1, and every 1mmol europium hydroxide amount of water is 6.9ml;
B, said mixture is placed in electric drying oven with forced convection reacts 7h, control temperature is 150 DEG C;
C, the solution cooling by step b, filtration, filtrate covers the narrow meshed antistaling film of one deck, naturally volatilizees under being placed in room temperature, until separate out aromatic carboxylic acid europium (III) complex colorless crystal.
As calculated, the productive rate of aromatic carboxylic acid europium (III) complex colorless crystal is 36%.
The preparation method of aromatic carboxylic acid europium (III) title complex provided by the invention, tool has the following advantages:
(1) adopt solvent structure, controlling temperature is 150 DEG C, and compare with traditional high temperature solid phase synthesis, synthesis temperature greatly reduces, and power consumption is few;
(2) use electric drying oven with forced convection and reactor equipment, device is simple;
(3) raw material one kettle way adds, easy and simple to handle;
(4) evaporative crystallization obtains product, and separating-purifying is easy;
(5) product thing mutually evenly, purity is high, crystal formation good, and productive rate is higher.
Two, the crystal structure determination of aromatic carboxylic acid europium (III) title complex
Choose the monocrystalline being of a size of 0.25x0.24x0.22mm, be placed on BrukerAPEX-IICCD type single crystal diffractometer and carry out diffraction experiment, with MoK alpha-ray (λ=0.071073nm) under 296 (2) K, with
scan mode collects 25489 point diffractions altogether, wherein 9202 independent point diffraction [R within the scope of 0.91 °≤θ≤25.01 °
int=0.0403], 7093 observable point diffractions [I>2 σ (I)] are for structural analysis and structural modifications.All data corrects through Lp Summing Factor empirical absorption.Crystalline structure adopts SHELXS-97 program to be solved by direct method, and structure refinement adopts SHELXL-97 program, adopts isotropy and anisotropic temperature factor to carry out complete matrix least-squares refinement respectively to hydrogen atom and non-hydrogen atom.
The crystalline structure measuring aromatic carboxylic acid europium (III) title complex is oblique system, and unit cell parameters is:
A=2.2577 (4) nm, b=1.23484 (19) nm, c=1.8789 (3) nm, β=94.918 (3) °, V=5.2189 (14) nm
3, Dc=1.512g/cm
3, Z=4, μ (MoK α)=1.269mm
-1, F (000)=2408, final discrepancy factor R
1=0.0433, wR
2=0.1038.W=1/ [σ
2(F
o 2)+(0.0574P)
2+ 9.1006P], wherein, P=(F
o 2+ 2F
c 2)/3, (Δ/σ)
max=0.001, S=1.048.
In above-mentioned parameter, a, b, c represent that three groups of ribs of structure cell are long respectively; Angle between the rib that β represents structure cell; V represents unit cell volume; Dc represents structure cell density; Z represents the unit number in structure cell; μ (MoK α) represents uptake factor; F (000) represents electronic number.
The coordination polyhedron structure (Fig. 2) of binding molecule structural formula (Fig. 1), center europium (III) ion, main bond distance and bond angle list in table 1.
From molecular structural formula Fig. 1, aromatic carboxylic acid europium (III) complex molecule is by europium (III) ion, three 2-benzoylbenzoic acid radical ions and two 1,10-phenanthroline molecular compositions.Europium (III) ion with from five Sauerstoffatoms of three 2-benzoylbenzoic acid radical ions and four nitrogen-atoms coordinations of two 1,10-phenanthroline molecules.
As can be seen from Figure 2, europium (III) ion is in the coordination environment of the anti-prism in single cap four directions of nine coordinations: O (2) is in cap position, N (4), N (2), N (1) and O (1) are positioned at the upper planimetric position of cubic anti-prism, and N (3), O (4), O (7) and O (8) are positioned at the lower plane position of cubic anti-prism; Its plane equation is 19.956x-5.286y+2.101z=1.3746 and 19.855x-4.264y+4.716z=5.7323 respectively, and interfacial angle is 9.3 °.Eu-O bond distance is at 0.2291 (4) ~ 0.2644 (4) nm, and Eu-N bond distance is at 0.2572 (4) ~ 0.2628 (4) nm, and they are all within the scope of normal bond distance.
Main bond distance (nm) and the bond angle (°) of table 1 aromatic carboxylic acid europium (III) title complex
Three, the fluorescence property of aromatic carboxylic acid europium (III) title complex measures
1, aromatic carboxylic acid europium (III) title complex is placed in three with under ultraviolet lamp, when excitation wavelength is 254nm, this material sends strong red fluorescence, as Fig. 3;
2, under room temperature, adopt Japanese Shimadzu RF-5301PC type spectrophotofluorometer, under the ultraviolet excitation of 396nm, measure the fluorescence emission spectrogram (see Fig. 4) of aromatic carboxylic acid europium (III) title complex solid of the present invention.As can be seen from Figure 4, this material has the fluorescence emission peak of two features at 597nm and 615nm place, corresponds respectively to europium (III) ion
5d
0→
7f
1with
5d
0→
7f
2transition of electron, wherein the strongest at the fluorescence peak at 615nm place.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments, equivalent replacement etc. done in protection scope of the present invention, all should be included within protection scope of the present invention.
Claims (2)
1. a preparation method for aromatic carboxylic acid europium (III) title complex, is characterized in that, as aromatic carboxylic acid europium (III) title complex of luminescent material, its chemical formula is: Eu (C
14h
9o
3)
3(Phen)
2the crystalline structure of described aromatic carboxylic acid europium (III) title complex is oblique system, unit cell parameters is: a=2.2577 (4) nm, b=1.23484 (19) nm, c=1.8789 (3) nm, β=94.918 (3) °, V=5.2189 (14) nm
3, Dc=1.512g/cm
3, Z=4, μ (MoK α)=1.269mm
-1, F (000)=2408, final discrepancy factor R
1=0.0433, wR
2=0.1038; Wherein, a, b, c represent that three groups of ribs of structure cell are long respectively; Angle between the rib that β represents structure cell; V represents unit cell volume; Dc represents structure cell density; Z represents the unit number in structure cell; μ (MoK α) represents uptake factor; F (000) represents electronic number;
Described preparation method comprises the following steps:
A, by 2-benzoylbenzoic acid, 1,10-phenanthroline, europium hydroxide are by (2-3): 1:(1-2) mol ratio join in reactor, stir, and add water and N, the mixed solvent of dinethylformamide composition, wherein, water and N, the volume ratio of dinethylformamide is (1.5-3): 1, and every 1mmol europium hydroxide amount of water is 6.9ml;
B, said mixture is placed in loft drier reacts 6-8h, control temperature is 140-160 DEG C;
C, the solution cooling by step b, filtration, filtrate covers the narrow meshed antistaling film of one deck, naturally volatilizees under being placed in room temperature, until separate out aromatic carboxylic acid europium (III) complex colorless crystal.
2. the preparation method of aromatic carboxylic acid europium (III) title complex according to claim 1, it is characterized in that, in described step a, 2-benzoylbenzoic acid, 1, the mol ratio of 10-phenanthroline, europium hydroxide is 2.3:1:1.8, in mixed solvent, the volume ratio of water and DMF is 2:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410335932.1A CN104151337B (en) | 2014-07-15 | 2014-07-15 | As aromatic carboxylic acid europium (III) title complex and preparation method thereof of luminescent material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410335932.1A CN104151337B (en) | 2014-07-15 | 2014-07-15 | As aromatic carboxylic acid europium (III) title complex and preparation method thereof of luminescent material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104151337A CN104151337A (en) | 2014-11-19 |
| CN104151337B true CN104151337B (en) | 2016-02-17 |
Family
ID=51876990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410335932.1A Expired - Fee Related CN104151337B (en) | 2014-07-15 | 2014-07-15 | As aromatic carboxylic acid europium (III) title complex and preparation method thereof of luminescent material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104151337B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107722047B (en) * | 2017-10-26 | 2019-10-29 | 南昌大学 | A kind of double-core Rare Earth Europium Complex luminescent material and its preparation method and application |
| CN111534297B (en) * | 2019-10-09 | 2022-10-04 | 烟台希尔德材料科技有限公司 | Three europium-terbium co-doped fluorescent probes based on different carboxylic acid ligands and application of film in temperature sensing |
| CN111909186A (en) * | 2020-08-24 | 2020-11-10 | 北京石油化工学院 | Preparation method of red fluorescent material |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1795252A (en) * | 2003-05-22 | 2006-06-28 | 三菱化学株式会社 | Light-emitting device and phosphor |
-
2014
- 2014-07-15 CN CN201410335932.1A patent/CN104151337B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1795252A (en) * | 2003-05-22 | 2006-06-28 | 三菱化学株式会社 | Light-emitting device and phosphor |
Non-Patent Citations (2)
| Title |
|---|
| "Eu(Sal)3Phen 的荧光性能及其合成工艺的研究";杨程等;《北京化工大学学报》;20061231;第33卷(第1期);第68－71页 * |
| "配合物Eu(Sal)2(phen)2(NO3)的合成及荧光性能的研究";张琢等;《精细与专用化学品》;20070206;第15卷(第3／4期);第15－17页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104151337A (en) | 2014-11-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Yang et al. | Delayed concentration quenching of luminescence caused by Eu3+-induced phase transition in LaSc3 (BO3) 4 | |
| Min et al. | Novel pyrochlore-type La2Zr2O7: Eu3+ red phosphors: Synthesis, structural, luminescence properties and theoretical calculation | |
| Qi et al. | Broadband white-light emission in a one-dimensional organic–inorganic hybrid cadmium chloride with face-sharing CdCl 6 octahedral chains | |
| CN106854175B (en) | Terpyridyl zinc benzoate complex and preparation condition | |
| CN105131942A (en) | Photo-induced yellow fluorescent zinc coordination polymer [Zn(HL)(HBPEB)] and method of synthesizing same | |
| Song et al. | Synthesis, photoluminescence properties and potential applications of Eu3+ and Mn4+ activated SrLaMgNbO6 phosphors | |
| CN104151337B (en) | As aromatic carboxylic acid europium (III) title complex and preparation method thereof of luminescent material | |
| Chen et al. | Color tunable and near white-light emission of two solvent-induced 2D lead (II) coordination networks based on a rigid ligand 1-tetrazole-4-imidazole-benzene | |
| Ding et al. | Novel red and green emitting Li 2 SiN 2: Eu 3+/Tb 3+ phosphors with a broad charge transfer band | |
| Ma et al. | Luminescence properties and energy transfer investigations of Ba 2 La 2.85− x Tb 0.15 Eu x (SiO 4) 3 F multicolor phosphor | |
| Lin et al. | Rare-earth-free barium borostannate with deep-blue light emission | |
| Zhang et al. | Syntheses of three members of A (II) M (IV)(PO 4) 2: luminescence properties of PbGe (PO 4) 2 and its Eu 3+-doped powders | |
| Huang et al. | Origin of singlet self-trapped exciton and enhancement of photoluminescence quantum yield of organic–inorganic hybrid antimony (III) chlorides with the [SbCl5] 2− units | |
| Li et al. | A new diphosphate Ba 2 LiGa (P 2 O 7) 2: synthesis, crystal structure and Eu 3+-activated fluorescence performance | |
| Ma et al. | Synthesis, crystal structure, and characterizations of Eu3+-activated Ca2LnHf2 (AlO4) 3 (ln= Lu, Y and Gd) red-emitting phosphors for phosphors-converted white LEDs | |
| Peng et al. | H2O–NH4+-Induced Emission Modulation in Sb3+-Doped (NH4) 2InCl5· H2O | |
| CN101412908B (en) | Synthesis and use of rare earth Eu or Y and Eu mixing complex type photoluminescent material | |
| CN104987864A (en) | Layered perovskite red phosphor for white LED and preparation method thereof | |
| Song et al. | Efficient, broadband self-trapped white-light emission from haloplumbate-based metal–organic frameworks | |
| Jiang et al. | Lowering the dimensionality of cationic lead bromide units in robust coordination polymers for enhanced self-trapped broadband emission | |
| Yan et al. | A novel Mn4+-activated Li3CsGe8O18 red phosphor and cation substitution induced photoluminescence improvement | |
| CN102757784A (en) | Silicate red fluorescent powder and preparation method thereof | |
| CN103289698B (en) | A kind of europium ion Eu 3+the phosphate base red fluorescence powder activated, preparation method and application | |
| Meng et al. | Mn4+-doped La (CaZr) 0.5 O3 phosphors for plant grow LEDs: Ab initio site occupy and photoluminescence properties | |
| CN104194774A (en) | Antimony-based fluorescent material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160217 Termination date: 20170715 |