CN106633089B - A kind of rare earth doped coordination polymer white light emitting material and preparation method thereof - Google Patents
A kind of rare earth doped coordination polymer white light emitting material and preparation method thereof Download PDFInfo
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Abstract
The present invention provides a kind of Tb3+/Eu3+Rare earth doped coordination polymer white light emitting material and preparation method thereof belongs to luminous and field of display technology.Two kinds of different proportion rare earth ion synthesis of doping are passed through using simple solvent-thermal process method as organic ligand using 2,5-Dihydroxyterephthalic acid.Complex prepared by the present invention can generate Eu under the ultraviolet excitation of 370nm at room temperature3+The feature red emission of ion and the blue emission of ligand, by adjusting Eu in complex3+The relative intensity of the content of ion adjustable red emission and blue emission, and then realize the white light emission of complex.Preparation method of the present invention is simple, and raw material is easy to get, and can be used as a kind of novel white light emitting material.
Description
Technical field
The invention belongs to luminous and field of display technology, and in particular to a kind of white light emitting material, molecular formula are
{[Tb0.695Eu0.305(DHBDC)3(DMF)4](DMF)2}nComplex preparation method.
Background technique
White light emitting diode (WLED) due to many advantages such as luminous efficiency high, low energy consumption, long service life by
Gradually instead of traditional incandescent lamp and fluorescent lamp, it is mainly used in illumination and display etc..In recent years, rare earth coordination is utilized
The white light emitting material that Macroscopic single crystal goes out high energy efficiency is gradually attract attention.Rare earth coordination polymer is a class formation
Novel composite material has the characteristics that various structures, controllability are strong, performance is abundant.Rare earth element is because have unique
4f configuration, and the property different from other metals is shown, such as: high ligancy, strong coordination ability, from visible region
To the good characteristics of luminescence of infrared light district, long luminescent lifetime etc..Using the unique characteristics of luminescence of rare earth element, binding partner with
Existing energy transfer between rare earth element, different rare earth element, i.e., it is so-called " antenna effect ", be expected to synthesize can emit it is white
The rare earth coordination polymer luminescent material of light.
Since most of rare earth ions have similar chemical property, especially its ionic radius close, therefore can be
In same rare earth coordination polymer, by being doped into knot of different types of rare earth ion without changing coordination polymer
Structure may be implemented the regulation of color, synthesize ideal white light by adjusting the ratio of different metal ions in product；
In addition, since rare earth coordination polymer luminescent properties additionally depend on organic ligand to ultraviolet or visible light absorbability, ligand
To the effective energy transmitting between rare earth ion and the level-density parameter between rare earth ion, thus want to synthesize high luminance purity,
The rare earth coordination polymer white light emitting material of long life still has many difficulties, needs to select suitable rare earth metal
Ion and organic ligand explore the reaction conditions such as suitable temperature, pH required for generating title complex.Prepared by the present invention
Compound can be by simply changing Eu3+The ratio of ion adjusts the luminescent properties of material, obtains white light emitting material, the party
Method is simple and easy, and raw material is easy to get, and has certain economic and social benefit.
Summary of the invention
The rare earth doped coordination polymer and its preparation that the purpose of the present invention is to provide a kind of as white light emitting material
Method, molecular formula are { [Tb0.695Eu0.305(DHBDC)3(DMF)4](DMF)2}n.The present invention, which selects, contains functionalization hydroxyl base
The organic carboxyl acid ligand 2,5-Dihydroxyterephthalic acid and rare-earth metal Tb of group3+、Eu3+Ion carries out reaction and prepares rare earth matching
Object is closed, by adjusting Eu in complex3+Ratio, finally obtain white light emitting material.
To achieve the above object, the present invention adopts the following technical scheme:
The white light emitting material { [Tb0.695Eu0.305(DHBDC)3(DMF)4](DMF)2}nThe preparation method of compound
For solvent-thermal process method.Weigh 0.3mmol six water of 2,5-Dihydroxyterephthalic acid and 0.0302mmol europium nitrate,
Six water of 0.0698mmol terbium nitrate is added in 23mL polytetrafluoroethylene (PTFE) autoclave, and 6mLDMF is added, and is added and is contained 36wt%-
The concentrated hydrochloric acid solution of 38wt%HCl adjusts pH=3.5, stirs 10min at room temperature, and the reaction kettle being sealed is put in an oven 120
DEG C constant temperature two days, then uniform decrease in temperature one day to room temperature, obtained yellowish-brown bulk crystals, the as described coordination polymer, yield
Calculate is about that 35%(is calculated with Eu).
The white light emitting material is by { [Eu2(DHBDC)3(DMF)4](DMF)2}nIt is rare-earth metal doped in complex
Tb3+Ion adjusts Eu3+The content of ion, causes organic ligand and Eu3+The variation of ionoluminescence intensity, works as Eu3+Ion concentration
When being 30.5%, product capable of emitting ideal white light under ultraviolet excitation, cie color coordinate is (0.34,0.31).
Remarkable advantage of the invention is:
(1) present invention generates Tb, Eu mixing with 2,5-Dihydroxyterephthalic acid ligand and Eu, Tb reacting metal salt
Rare earth doped coordination polymer, in products therefrom the ingredient of each rare earth metal close to raw material be added ratio, thus easily
In the ratio by control each rare earth metal of raw material, to adjust the luminescent properties of product；
(2) present invention uses solvent-thermal process method, and synthetic method is simple and easy, and product purity is high, and crystal phase is good；
(3) { [Tb0.695Eu0.305(DHBDC)3(DMF)4](DMF)2}nCompound at room temperature, the ultraviolet excitation of 370nm
Ideal white light emission can be generated down, and cie color coordinate is (0.34,0.31), can be used for preparing novel white light
Luminescent material has good practical value and application prospect.
Detailed description of the invention
Fig. 1 is gained { [Tb2(DHBDC)3(DMF)4](DMF)2}nLocal structural graph.
Fig. 2 is gained { [Tb2(DHBDC)3(DMF)4](DMF)2}nTomograph.
Fig. 3 is gained { [Tb0.695Eu0.305(DHBDC)3(DMF)4](DMF)2}nEnergy spectrum diagram.
Fig. 4 is gained difference Tb3+/Eu3+{ [the Tb of ratioxEu1-x(DHBDC)3(DMF)4](DMF)2}nPowder diffraction
Figure.
Fig. 5 is different Tb3+/Eu3+{ [the Tb of ratioxEu1-x(DHBDC)3(DMF)4](DMF)2}nInfrared spectrogram.System
Sample loading mode uses KBr tabletting.
Fig. 6-7 is { [Tb respectively2(DHBDC)3(DMF)4](DMF)2}n{ [Eu2(DHBDC)3(DMF)4](DMF)2}n?
Fluorescence spectra in room temperature under ultraviolet light 370nm excitation.
Fig. 8 is different Tb3+/Eu3+{ [the Tb of ratioxEu1-x(DHBDC)3(DMF)4](DMF)2}nUltraviolet light at room temperature
Fluorescence spectra under 370nm excitation.
Fig. 9 difference Tb3+/Eu3+{ [the Tb of ratioxEu1-x(DHBDC)3(DMF)4](DMF)2}n(x=0.5-0.9) and Figure 10
{[Tb0.695Eu0.305 (DHBDC)3(DMF)4](DMF)2}nCie color coordinate diagram under ultraviolet light 370nm excitation at room temperature.
Figure 11 { [Eu2(DHBDC)3(DMF)4](DMF)2}nWith Figure 12 { [Tb0.695Eu0.305(DHBDC)3(DMF)4]
(DMF)2}nFluorescence lifetime figure under ultraviolet light 370nm excitation at room temperature.
Specific embodiment
Embodiment 1
White light emitting material { [Tb0.695Eu0.305(DHBDC)3(DMF)4](DMF)2}nThe preparation of complex.
Weigh six water of 2,5-Dihydroxyterephthalic acid and 0.0302mmol europium nitrate, the 0.0698mmol nitre of 0.3mmol
Sour six water of terbium, is added in 23mL polytetrafluoroethylene (PTFE) autoclave, and 6mL DMF is added, and is added containing 36wt%-38wt%HCl's
Concentrated hydrochloric acid solution adjusts pH=3.5, stirs 10min at room temperature, the reaction kettle being sealed is put 120 DEG C of constant temperature two in an oven
It, then uniform decrease in temperature one day to room temperature, obtains yellowish-brown bulk crystals, the as described coordination polymer, and calculation of yield is about
35%(is calculated with Eu).At room temperature, under the ultraviolet excitation of 370nm, capable of emitting white light, cie color coordinate is the polymer
(0.34,0.31).
Fig. 1 illustrates synthesized { [Tb2(DHBDC)3(DMF)4](DMF)2}nThe partial structurtes of crystal.Wherein, each
Tb3+The oxygen of ion and six carboxyl oxygen atoms and two DMF solvent molecules in five 2,5-Dihydroxyterephthalic acid molecules
The polyhedral structure of atom formation eight-coordinate.
Fig. 2 is { [Tb2(DHBDC)3(DMF)4](DMF)2}nTomograph, as can be seen from the figure the compound have
There is one-dimensional tunnel structure, duct volume accounts for about the 42.8% of total unit cell volume.
Fig. 3 illustrates { [Tb0.695Eu0.305 (DHBDC)3(DMF)4](DMF)2}nMiddle Tb3+And Eu3+Content, the two ratio
Example is about Tb:Eu=0.695:0.305, is coincide substantially with feed ratio Tb:Eu=0.698:0.302.
Fig. 4 is different Tb3+/Eu3+{ [the Tb of ratioxEu1-x(DHBDC)3(DMF)4](DMF)2}nPowder diagram, from
It can be seen that doping front and back, crystal structure remain as pure phase there is no substantially changeing in figure.
Fig. 5 is different Tb3+/Eu3+{ [the Tb of ratioxEu1-x(DHBDC)3(DMF)4](DMF)2}nInfrared spectrogram, from
It can also prove that the product infrared spectroscopy of doping front and back is held essentially constant in figure, the infrared spectrogram of coordination polymer exists
3200cm-1Nearby there is the ν of ligandO-HStretching vibration peak, in 1700 cm-1Nearby there is not characteristic absorption peak, explanation is matched
The carboxyl oxygen in object in 2,5-Dihydroxyterephthalic acid is closed to slough proton and participate in being coordinated, and hydroxyl oxygen then has neither part nor lot in coordination.
Embodiment 2
By changing Eu in complex3+Content, obtain ideal white light emitting material.
With { [Eu2(DHBDC)3(DMF)4](DMF)2}nFor host material, the Tb of different proportion is adulterated3+Ion obtains one
{ [the Tb of seriesxEu1-x(DHBDC)3(DMF)4](DMF)2}nComplex.At room temperature, under the excitation wavelength of ultraviolet light 370nm,
Fluorescence spectrum is tested, corresponding cie color coordinate is obtained.
It is that only single metal ion (contains only Eu shown in Fig. 6-73+Or Tb3+) title complex fluorescence spectrum, wherein
Tb- complex does not show Tb3+The characteristic peak of ion, only ligand peak is luminous, and after illustrating that ligand is stimulated, energy is not
Tb can be effectively transferred to3+Ion cannot be sensitized Tb3+Ionoluminescence.And in the fluorogram of Eu- complex, both there is Eu3+
The characteristic peak of ion also shows the emission peak of ligand, and only ligand emission peak is weaker, illustrates ligand to Eu3+Ion exists
Apparent sensibilization.It therefore can be by adjusting Eu in complex3+The ratio of ion changes the relatively strong of two kinds of emission peaks
Degree, and then obtain more satisfactory white light emitting material.
Fig. 8 is Tb in complex3+And Eu3+The molar ratio of ion changes to the fluorescence of 0.5:0.5 from 0.9:0.1 respectively
Figure.
Fig. 9-10 is it can be seen that carry out apparent color change, with Eu3+Content increase, color is gradually from blue to white
Color change, Eu3+Molar ratio at 0.5 a little start be biased to yellow, therefore select in Eu3+Molar ratio be 0.5 near
It is adjusted, is found by many experiments, in Tb3+/Eu3+When the molar ratio of ion is 0.695/0.305, produces and compare
Ideal white light emission, CIE chromaticity coordinates are (0.34,0.31).
Figure 11-12 is { [Eu respectively2(DHBDC)3(DMF)4](DMF)2}n{ [Tb0.695Eu0.305(DHBDC)3(DMF)4]
(DMF)2}nFluorescence lifetime figure.By calculating, Tb is adulterated3+Complex (τ=220ns) relatively merely contain Eu3+Complex (τ=
130ns) there is longer fluorescence lifetime.
Table is first is that { [Tb2(DHBDC)3(DMF)4](DMF)2}nX-ray single crystal diffraction data profile.
Table is second is that { [Tb2(DHBDC)3(DMF)4](DMF)2}nCrystal structural data in atomic coordinates and equivalent each
To same sex displacement parameter.
Table is third is that { [Tb2(DHBDC)3(DMF)4](DMF)2}nPart bond distance's bond angle table.
The crystallographic data of table a sample crystal structure
The atomic coordinates (× 10 of two Sample crystals structure of table4) and effective homogeneity displacement parameter ()
Table is third is that { [Tb2(DHBDC)3(DMF)4](DMF)2}nPart bond distance's bond angle table.
Symmetry operation code in table is as follows: #1-x ,-y ,-z; #2 -x,-y-1,-z;#3 -x-1,-y,-z;#4 -x
+1,-y+1,-z+1。
The foregoing is merely presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with
Modification, is all covered by the present invention.
Claims (3)
1. a kind of rare earth doped coordination polymer white light emitting material, it is characterised in that: its molecular formula is { [Tb0.695Eu0.305
(DHBDC)3(DMF)4](DMF)2}n；The DHBDC is 2,5-Dihydroxyterephthalic acid；The DMF is N, N- diformazan
Base formamide.
2. a kind of method for preparing rare earth doped coordination polymer white light emitting material as described in claim 1, feature exist
In: it is prepared using solvent-thermal process method.
3. according to the method described in claim 2, it is characterized by: weigh 0.3mmol 2,5-Dihydroxyterephthalic acid and
Six water europium nitrate of 0.0302mmol, six water terbium nitrate of 0.0698mmol are added in the polytetrafluoroethylene (PTFE) autoclave of 23mL,
6mLN is added, the concentrated hydrochloric acid solution containing 36wt%-38wt%HCl is added in dinethylformamide, adjusts pH=3.5, stirs at room temperature
10min is mixed, the reaction kettle being sealed is put into 120 DEG C constant temperature two days in an oven, program cools down one day, and it is blocky brilliant to obtain yellowish-brown
Body, the as described coordination polymer.
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| CN110951083A (en) * | 2018-09-26 | 2020-04-03 | 天津工业大学 | Double-rare-earth metal organic framework material based on white light emission and preparation method thereof |
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| CN110240707B (en) * | 2019-06-10 | 2021-09-21 | 江苏师范大学 | Post-modified metal-organic framework material for detecting iron ions and preparation method and application thereof |
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| CN110396050B (en) | 2019-07-31 | 2022-10-04 | 南方科技大学 | White light organic light emitting diode and preparation method thereof |
| CN113563600B (en) * | 2021-08-15 | 2022-06-14 | 福州大学 | Metal organic framework material with single-component white light characteristic |
| CN115181285A (en) * | 2022-07-12 | 2022-10-14 | 延安大学 | Terbium coordination polymer crystal and preparation method and application thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102584873A (en) * | 2012-02-15 | 2012-07-18 | 浙江大学 | Double rare earth metal-organic framework material for temperature detection and synthesis method thereof |
| CN104830319A (en) * | 2015-05-22 | 2015-08-12 | 河北工业大学 | Nano L-type zeolite light-emitting material containing double-rare-earth Eu<3+>/Tb<3+>-beta-dione complex and application thereof |
| CN105753891A (en) * | 2016-03-23 | 2016-07-13 | 浙江大学 | Rare earth organic framework material for fluorescence detection of trace water and preparation method of rare earth organic framework material |
| CN105859758A (en) * | 2016-04-29 | 2016-08-17 | 青海大学 | Rare earth coordination polymer and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102584873A (en) * | 2012-02-15 | 2012-07-18 | 浙江大学 | Double rare earth metal-organic framework material for temperature detection and synthesis method thereof |
| CN104830319A (en) * | 2015-05-22 | 2015-08-12 | 河北工业大学 | Nano L-type zeolite light-emitting material containing double-rare-earth Eu<3+>/Tb<3+>-beta-dione complex and application thereof |
| CN105753891A (en) * | 2016-03-23 | 2016-07-13 | 浙江大学 | Rare earth organic framework material for fluorescence detection of trace water and preparation method of rare earth organic framework material |
| CN105859758A (en) * | 2016-04-29 | 2016-08-17 | 青海大学 | Rare earth coordination polymer and preparation method thereof |
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