X-type interwoven supramolecular light conversion material, its preparation method and application in preparing characteristic white LED device

Abstract

The application provides an X-type interwoven supramolecular light conversion material, characterized in that the chemical general formula is {[Zn(edd)(phen)](H2O)} n , belongs to an orthorhombic system, a space group is Pccn, and a unit cell parameter is 0.8 nm*0.8 nm*0.8 nm. 2‑ In the chemical general formula, the component edd is obtained by removing two protons from a binary carboxylic acid H2edd, the structure of the H2edd is shown as formula I, and the structure of the organic component phen is shown as formula II. The X-type interwoven supramolecular light conversion material prepared by the application does not use rare earth elements as raw materials, the accurate electronic structure of the new supramolecule is determined, the preparation condition is mild, the yield is about 56%, the phase purity is high, and the supramolecular material has good thermal stability. As a single-component light conversion agent, the supramolecular material is packaged into two characteristic white light LED devices based on a purple light chip and an ultraviolet light chip, the device spectrum has an emission peak in a 380-404 nm purple light band, and the device has application prospects in aspects of a drying device and a jewelry identification light source.

Description

Technical Field

[0001] This application belongs to the field of advanced light-converting materials, specifically relating to an X-type interwoven supramolecular light-converting material, its preparation method, and its application in the fabrication of distinctive white LED devices. Background Technology

[0002] Light-emitting diodes (LEDs) are semiconductor lighting components that have attracted much attention due to their advantages such as low heat generation, long lifespan, low power consumption, and small size. With the emergence of white light-emitting diode (WLED) devices, LED lighting, often referred to as the fourth generation of lighting sources or green light sources, has flourished in fields such as mobile phone panel backlights and indoor and outdoor lighting. The current mainstream strategy for manufacturing WLEDs is to use phosphors to convert the short-wavelength light generated by the light-emitting chip into dual-color or tri-color wavelength light, resulting in a "light-to-light" WLED. The yellow phosphors used are mainly rare-earth-based inorganic composites, such as Ca2BO3Cl:Ce. 3+ / Eu 2+ However, limited rare earth resources and the challenge of quantitative control restrict the development of light-to-light WLED devices. Therefore, coating ultraviolet or violet chips with a single-component light-converting material has become a new strategy for exploring and developing WLED devices.

[0003] Supramolecular chemistry, with its focus on creating new substances, is one of the most active fields of new materials development. Supramolecular crystalline materials, integrating chromophores, possess precise ordered structures and high crystal purity, and are attracting considerable attention as a new generation of advanced downconversion light-converting materials. However, examples of using supramolecular light-converting materials containing flexible or semi-rigid organic components to fabricate white LED devices are still rarely reported. Summary of the Invention

[0004] To address the aforementioned shortcomings in existing technologies, the present invention aims to provide an X-type interwoven supramolecular light-converting material. Its precise electronic structure has been determined, and the structure contains semi-rigid nanoscale organic components that are both rigid and flexible, and are cross-woven into a supramolecular solid material. Using this new X-type cross-woven supramolecular material as a light-converting agent, two distinctive white LED devices were prepared.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an X-type interwoven supramolecular light-converting material, with the general chemical formula {[Zn(edd)(phen)](H2O)} n It belongs to the orthorhombic crystal system, space group Pccn, and its unit cell parameters are... In the general chemical formula, component edd 2-It is obtained by removing two protons from the dicarboxylic acid H2edd, the structure of which is shown in Formula I; the organic component phen has the structure shown in Formula II.

[0006]

[0007] Furthermore, the asymmetric structural unit of the X-type interwoven supramolecular optical conversion material contains one Zn atom. 2+ Ions, 1 edd 2- One phen component and one lattice water molecule; the organic component edd 2- Both phen and Zn 2+ Ion coordination, one Zn 2+ The ion is coordinated by two pyridine N atoms and four carboxyl oxygen atoms; component edd 2- The coordination modes of phen and metal ions are shown in Formula III; in Formula III, the numbers to the right of the element symbols indicate the atom numbers in the unit cell, and the superscript # sign indicates a crystallographic symmetry transformation.

[0008]

[0009] Furthermore, in the organic component edd 2- The crystal structure contains both rigid chromophores and flexible structural chains -OCH2CH2O-; the twist angles between the -C6H4-, -CH=CH-, and -CO2- functional groups are 3° and 8°, respectively, i.e., -C6H4-CH=CH-CO2. - The structure is almost coplanar, forming a large conjugated system; the fused ring phen is another conjugated system; through coordination with metal ions, the delocalized electrons of the organic component conjugated system can be transferred to the metal ions.

[0010] Furthermore, in the X-type interwoven supramolecular light-converting material spatial structure, phen chelates with metal ions, and further through edd 2- The bridging forms a one-dimensional zigzag coordination aggregation chain, where the distance between Zn...Zn within the chain is... The polymer chains form a 2D supramolecular layer through face-to-face π··π interactions between phen components. This 2D supramolecular layer is further woven into a 3D supramolecular aggregate through cross-stacking.

[0011] Furthermore, the X-type interwoven supramolecular optical conversion material is prepared by solvothermal synthesis using H2edd, phen and Zn(NO3)2·6H2O as raw materials and a mixed solution of DMF and water as solvent.

[0012] Furthermore, the preparation method specifically includes the following steps:

[0013] (1) Mix the above raw materials and solvent to form a reaction system and place it in a sealed container; the molar ratio of the raw materials H2edd:phen:Zn(NO3)2·6H2O is 1:1:2; the volume ratio of the solvent DMF to water is 3~6:6~9;

[0014] (2) Stir the reaction system at room temperature for 30 minutes, then raise the reaction temperature to 110-150℃ and react for 2-4 days. After that, cool naturally, filter and dry to obtain block crystals.

[0015] Furthermore, the initial molar concentration of H2edd in the reaction system is 10 mmol / L.

[0016] Furthermore, the reaction temperature of the reaction system in step (2) is 120°C; the drying refers to the crystals being washed with distilled water and then naturally dried in the air at room temperature.

[0017] Application of the X-type interwoven supramolecular light-converting material prepared by the above method in the preparation of special white LED devices.

[0018] The application of the X-type interwoven supramolecular light-converting material prepared by the above method in the preparation of composite fluorescent materials.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) The X-type interwoven supramolecular light-converting material prepared in this invention contains nano-sized organic components that are both rigid and flexible (semi-rigid) in its structure. 2 Its crystal structure contains conjugated chromophores -C6H4-CH=CH-CO2 - It also has a flexible structural chain -OCH2CH2O-; another component, phen, is also a chromophore with a conjugated system; the organic components coordinate with metal ions, allowing delocalized electrons of the conjugated system to be transferred to the metal ions. In the spatial structure, the organic components phen and edd 2- They chelate and bridge with Zn(II) ions respectively, forming one-dimensional Zigzag coordination polymer chains; the Z-type polymer chains form 2D supramolecular layers through face-to-face π··π interactions between phen components, and further weave into complex 3D supramolecular aggregates through cross-alternating superposition. These structural features provide a paradigm for the research of novel crystalline optical conversion materials.

[0021] (2) The X-type interwoven supramolecular optical conversion material prepared by this invention does not use rare earth elements as raw materials, has mild experimental conditions, a yield of about 56%, high phase purity, and good thermal stability. Under 395nm violet light excitation, the strongest peak wavelength of solid-state fluorescence emission at room temperature is at 439nm and 464nm in the visible region, and the fluorescence emission range is 414-684nm, covering the wavelengths of the three primary colors of red, green, and blue.

[0022] (3) The X-type interwoven supramolecular light-converting material provided in this invention was used as a light-converting agent to encapsulate two distinctive white LED devices using two 1W violet and ultraviolet light chips, respectively. The devices emitted white light under low-power driving at 3V 20mA. An emission peak was observed in the 380-404nm violet light band of the device spectrum. Violet light, compared to other colors of visible light, has a shorter wavelength and higher energy, making it particularly useful in applications such as dryers and jewelry identification light sources. This non-rare-earth-based X-type interwoven supramolecular compound, as a single-component light-converting material, can convert the violet or ultraviolet light from LED chips into distinctive white light, saving rare-earth resources and providing components for two distinctive white LED devices or composite LED light sources. This provides a new case study for developing new non-rare-earth single-component light-converting materials and enriching the color spectrum of white LED devices. Attached Figure Description

[0023] Figure 1 This is a powder X-ray diffraction pattern of the X-type interwoven supramolecular optical conversion material prepared in this invention;

[0024] Figure 2 Thermogravimetric curve of the X-type interwoven supramolecular optical conversion material prepared in this invention;

[0025] Figure 3 The infrared spectrum of the X-type interwoven supramolecular optical conversion material prepared in this invention;

[0026] Figure 4 Figure 1 shows the structure of the X-type interwoven supramolecular optical conversion material prepared in this invention, wherein Figure (a) shows the organic component edd 2- and phen and Zn 2+ The 1D coordination polymer chain formed; Figure (b) shows the 2D supramolecular layer formed by the π···π interaction between the phen components in the chain; Figure (c) shows the 3D supramolecular structure formed by the cross-alternating superposition of the 2D supramolecular layer;

[0027] Figure 5 The solid-state fluorescence spectrum of the X-type interwoven supramolecular optical conversion material at room temperature;

[0028] Figure 6The emission spectrum, chromaticity diagram, and photograph of a distinctive white LED device based on a 395nm chip encapsulated with the X-type interwoven supramolecular light-converting material prepared in this invention are shown in operation.

[0029] Figure 7 The images show the emission spectrum, chromaticity diagram, and photograph of a distinctive white LED device based on a 375nm chip, encapsulated with the X-type interwoven supramolecular light-converting material prepared in this invention. Detailed Implementation

[0030] The method of the present invention will be described in detail below with reference to specific embodiments and accompanying drawings. The present invention uses X-ray single-crystal diffraction to analyze the crystalline product, obtaining its precise electronic structure, and performs a series of characterizations on the final product, determining its general chemical formula as {[Zn(edd)(phen)](H2O)}. n The yield is calculated based on the amount of H2edd used. Specifically, the theoretically expected mass of the target material is calculated based on the molar percentage of H2edd in the product composition. The actual product mass is the ratio of the theoretically expected mass to the expected mass, which is the yield. In this invention, H2edd is an abbreviation for 3,3'-((ethane-1,2-diylbis(oxy))bis(2,1-phenylene))diacrylic acid, and phen is 1,10-phenanthroline.

[0031] I. Preparation of the X-type interwoven supramolecular optical conversion material of the present invention

[0032] Example 1

[0033] Take the following materials by specific mass or volume: H2edd (35.4 mg, 0.1 mmol), phen (19.8 mg, 0.1 mmol), Zn(NO3)2·6H2O (59.7 mg, 0.2 mmol), DMF (6 mL), and H2O (6 mL). The molar ratio of H2edd:phen:Zn(NO3)2·6H2O is 1:1:2. Place the above materials in a 25 mL polytetrafluoroethylene-lined container, stir for about 30 minutes, seal in a stainless steel reactor, place the reactor in an electric heating oven and heat to 120°C. After reacting for 3 days, allow it to cool naturally to room temperature to obtain a blocky crystal sample. Filter the sample from the mother liquor, wash with distilled water, and allow it to air dry naturally at room temperature.

[0034] The prepared crystal samples were subjected to powder diffraction tests using a Shimadzu XRD-6100 X-ray diffractometer (see...). Figure 1(x-axis—angle; y-axis—diffraction intensity). The peaks of the test spectrum match well with the peaks of the simulated crystal structure spectrum (mercury software), indicating that the structure of the obtained crystalline sample is the same as the structure analyzed from the single crystal data, suggesting that the crystalline sample has high phase purity.

[0035] Figure 2 Thermogravimetric curve of X-type interwoven supramolecular optical conversion material, from Figure 2 It can be seen that the thermogravimetric data analysis of the obtained crystalline samples shows (see...) Figure 2 Under a nitrogen atmosphere (x-axis: temperature; y-axis: residue), the crystalline sample of the optically converting material exhibited a 2.8% weight loss before 120℃, which can be attributed to the release of lattice water molecules (calculated lattice water molecule percentage: 2.9%). Significant weight loss occurred after 255℃, possibly due to framework collapse or decomposition. This indicates that the X-type interwoven supramolecular optically converting material prepared in this invention possesses relatively good thermal stability.

[0036] Determination of single crystal structure: Select a suitable single crystal and determine its structure using a SMARTAPEX II CZN single crystal diffractometer (Mo-Ka, X-ray diffraction data were collected at a low temperature of 100 K using a graphite monochromator and corrected for Lp factor. The crystal structure was solved by a direct method, and the analysis and refinement of the structure were performed using the SHELXTL-97 program package, followed by full matrix least squares F... 2 Anisotropic refinement was performed on all non-hydrogen atoms. The hydrogen atom coordinates of the organic ligands were obtained by theoretical hydrogen addition. Crystallographic data are shown in Table 1; coordinate bond lengths are shown in Table 2.

[0037] Table 1. Main crystallographic data

[0038]

[0039] *R1=Σ||F o |-|F c || / Σ|F o |,wR2=[Σ w (F o 2 -F c 2 ) 2 / Σ w (F o 2 ) 2 ] 1 / 2

[0040] Table 2 Coordination bond lengths

[0041]

[0042] Based on the above characterization data, the general formula of the prepared X-type interwoven supramolecular optical conversion material is {[Zn(edd)(phen)](H2O)}. n The chemical formula of the asymmetric unit is C 32 H 26 N2O7Zn has a chemical formula weight of 615.92. Elemental analysis of C, H, and N shows the following calculated values ​​(%): C 62.40, H 4.25, N 4.55; and the actual measured values ​​(%): C 62.35, H 4.21, N 4.51. Figure 3 The infrared spectrum of the novel substance of this invention (x-axis—wavenumber; y-axis—transmittance). FT-IR (KBr, cm⁻¹) -1 3442(w), 3058(w), 2941(w), 2877(w), 1641(m), 1478(m), 1111(m), 1047(m), 982(m), 848(m), 598(m), 1396(s), 767(s), 732(s), 1233(vs). Note: Elemental analysis values ​​were obtained using a Perkin-Elmer 2400 elemental analyzer; infrared spectra were obtained using a Perkin-Elmer FT-IR Spectrometer with KBr as the base, ranging from 400 to 4000 cm⁻¹. -1 Measured within the range.

[0043] The precise electronic structure was obtained by analyzing its X-ray single-crystal diffraction data. The coordination mode is shown in Equation III, containing one Zn group. 2+ Ions, 1 edd 2- One phen component and one lattice water molecule; the organic component edd 2- Both phen and Zn 2+ Ion coordination; Zn-N and Zn-O bond lengths are in The range is the common coordination bond length of Zn(II). In the infrared spectrum of the supramolecular material, 3441 cm⁻¹... -1 The absorption peak is attributed to the OH stretching vibration, confirming the presence of water molecules in the lattice; 2877 cm⁻¹ -1 The attribution to the absorption peak of the saturated CH stretching vibration corroborates edd's findings. 2- The presence of the -CH2- group.

[0044]

[0045] In the local crystal structure of the supramolecular material, the rigid fused-ring phen atoms are almost coplanar, forming a large conjugated system. Delocalized electrons are located in large π-bonds, allowing electron transport between phen atoms and metal ions via Zn-N bonds. Meanwhile, in the chromophore edd... 2-In the crystal structure, -C6H4-, -CH=CH- and -CO2 - The twist angles between the functional groups are 3° and 8°, respectively, therefore -C6H4-CH=CH-CO2 - The structure is almost coplanar, forming another large conjugated system; organic components are edd through Zn-N bonds. 2- Delocalized electron transport between metal ions.

[0046] like Figure 4 In the spatial crystal structure of the supramolecular material, a Zn 2+ The ion is coordinated by two pyridine N atoms and four carboxyl oxygen atoms, forming a 1D infinite zigzag coordination polymer chain (e.g., Figure 4 a) and forms a 2D supramolecular layer (e.g., through face-to-face π··π interactions between the aromatic rings of phen). Figure 4 b) The distance between aromatic rings is Furthermore, through cross- and alternating superposition and weaving, 3D supramolecular aggregates (such as...) were constructed from 2D supramolecular structures. Figure 4 c).

[0047] The fluorescence spectrum of the X-type interwoven supramolecular optical conversion material crystalline sample was tested at room temperature. Figure 5 The x-axis represents wavelength, and the y-axis represents fluorescence emission intensity. Spectral data show that under 395 nm violet light excitation, the strongest fluorescence emission peaks are located at 439 nm and 464 nm in the visible region, with a distinct shoulder peak at 491 nm. The fluorescence emission range is 414–684 nm, covering the wavelengths of the three primary colors (red, green, and blue). The excitation wavelength range extends to around 245 nm in the ultraviolet region, indicating that ultraviolet to visible violet light can excite this light-converting material to emit fluorescence.

[0048] This embodiment was repeated multiple times, and the actual mass of the X-type interwoven supramolecular light-converting material obtained remained at 26.6–34.6 mg, with a yield of 43.2%–56.2% calculated based on H2edd.

[0049] Example 2

[0050] Take the following materials by specific mass or volume: H2edd (35.4 mg, 0.1 mmol), phen (19.8 mg, 0.1 mmol), Zn(NO3)2·6H2O (59.7 mg, 0.2 mmol), DMF (3 mL), and H2O (9 mL). The molar ratio of H2edd:phen:Zn(NO3)2 is 1:1:2. Place the above materials in a 25 mL polytetrafluoroethylene-lined container, stir for about 10 min, seal in a stainless steel reactor, place the reactor in an electric heating oven and heat to 150°C, react at a constant temperature for 2 days, then allow to cool naturally to room temperature to obtain a blocky crystal sample. Filter the sample from the mother liquor, wash with distilled water, and allow to air dry naturally at room temperature.

[0051] Powder X-ray diffraction characterization of the product (see Figure 1 The data obtained were similar to those of Example 1. This indicates that the crystal structure obtained using Example 2 remained unchanged, and the product had high purity.

[0052] This embodiment was repeated multiple times, and the actual mass of the X-type interwoven supramolecular light-converting material obtained remained between 19.3 and 26.2 mg, with a yield of 31.4% to 42.5% calculated based on H2edd.

[0053] Example 3

[0054] Take the following materials by specific mass or volume: H2edd (35.4 mg, 0.1 mmol), phen (19.8 mg, 0.1 mmol), Zn(NO3)2·6H2O (59.7 mg, 0.2 mmol), DMF (5 mL), and H2O (7 mL). The molar ratio of H2edd:phen:Zn(NO3)2 is 1:1:2. Place the above materials in a 25 mL polytetrafluoroethylene-lined container, stir for about 20 min, seal in a stainless steel reactor, place the reactor in an electric heating oven and heat to 110°C, react at a constant temperature for 4 days, then allow to cool naturally to room temperature to obtain a blocky crystal sample. Filter the sample from the mother liquor, wash with distilled water, and allow to air dry naturally at room temperature.

[0055] Powder X-ray diffraction characterization of the product (see Figure 1 The data obtained were similar to those of Example 1. This indicates that the crystal structure obtained using Example 3 remained unchanged, and the product had high purity.

[0056] This embodiment was repeated multiple times, and the actual mass of the porous light-converting material obtained remained between 23 and 28.4 mg, with a yield of 37.4% to 46.1% calculated based on H2edd.

[0057] II. Preliminary Applications of the X-type Interwoven Supramolecular Optical Conversion Material of this Invention

[0058] Example 4: Packaging and Testing of Featured White LED Devices

[0059] In the experiment, X-type interwoven supramolecular light-converting materials were encapsulated onto LED chips. The peak wavelengths of the LED chips used were approximately 395 nm and 375 nm, respectively, with a power of approximately 1 W for both. The devices were cured for 72 hours, resulting in a distinctive white LED device. Under a constant current of 20 mA (3 V), the emission spectrum, color parameters, and microscopic images of the device were measured. The results are as follows: Figure 6 and Figure 7 As shown (horizontal axis—wavelength, vertical axis—intensity).

[0060] Figure 6 This is the spectral diagram of a white light device based on a 395nm chip. Its correlated color temperature (CCT) is 6957K, and its color rendering index (CIR Ra) is 69.2. In the CIE 1931 chromaticity diagram, its color coordinates are (0.2908, 0.3984), placing it in the white light region. The actual emission photograph of the device shows a white light with a slight green tint, consistent with the white light near the green light region indicated by the color coordinates. Further analysis of the emission spectrum reveals a strongest emission peak (normalized intensity of 1) at 404nm in the violet region, which can be attributed to the redshift of the chip's violet light after passing through a light-conversion layer. Violet light, compared to other visible colors, has a shorter wavelength and higher energy, showing promise for applications in special light sources such as dryers and jewelry identification.

[0061] Figure 7 The image shows the spectrum of a white light-emitting device based on a 375nm chip. Its correlated color temperature (CCT) is 6610K, and its color rendering index (CIR Ra) is 67.3. In the CIE 1931 chromaticity diagram, the color coordinates are (0.2984, 0.4094), which is in the white light region. The actual emission photograph of the device shows a white light with a slight green tint, consistent with the white light near the green light region indicated by the color coordinates. Further analysis of the emission spectrum reveals a shoulder peak (normalized intensity 0.18) at 387nm in the ultraviolet-violet region, which can be attributed to the emission peak of the chip's violet light after redshifting through the light conversion layer. Figure 6 Compared to other devices, Figure 7 The device contains violet light with a shorter wavelength and higher energy, but the intensity is not high, making it another option for white light sources for special purposes.

[0062] The new material and preliminary LED device data described in this invention show that this non-rare earth-based X-type interwoven supramolecular compound, as a single-component light-converting material, can convert the purple light of the LED chip into distinctive white light. This not only saves rare earth resources but also provides components for two distinctive white LED devices or composite LED light sources, contributing a new case to the development of new non-rare earth single-component light-converting materials and the enrichment of the light colors of white LED devices.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An X-type interwoven supramolecular light conversion material, characterized in that, {[Zn(edd)(phen)](H2O)} n , belongs to the orthorhombic system, and the space group is Pccn , the cell parameters are a = 24.311(3) Å, b = 6.2538(7) Å, c = 19.259(2) Å, V = 2928.1(6) Å 3 ; in the chemical formula, the component edd 2- is obtained by removing 2 protons from a binary carboxylic acid H2edd, and the structure of the H2edd is shown as formula I; the structure of the organic component phen is shown as formula II, ； In the asymmetric structural unit of the X-type interwoven supramolecular light-conversion material, 1 Zn 2+ ion, 1 edd 2- component, and 1 lattice water molecule; the organic components edd 2- and phen are each coordinated with Zn 2+ ion, and 1 Zn 2+ ion is coordinated by 2 pyridyl N atoms and 4 carboxyl O atoms; the coordination mode of components edd 2- , phen, and metal ions is shown in formula III; in formula III, the number on the right of the element symbol indicates the atom number in the unit, and the # mark in the upper right corner of the number is a crystallographic symmetry transformation, ; The organic component edd 2- In the crystal structure, there are both rigid chromophore groups and flexible structural chains -OCH2CH2O-, -C6H4-, -CH=CH- and -CO2 - The torsion angles between the functional groups are 3º and 8º, respectively, i.e. -C6H4-CH=CH-CO2 - The structure is almost coplanar, forming a large conjugated system; the fused ring phen is another conjugated system; through coordination with metal ions, the delocalized electrons of the conjugated system of the organic component can be transferred to the metal ions; in the X-type interwoven supramolecular light conversion material spatial structure, the phen chelates with the metal ions, further bridging through the edd 2- bridging, forming a one-dimensional zigzag coordination polymer chain, with a Zn···Zn distance of 15.5 Å within the chain; the polymer chains form 2D supramolecular layers through face-to-face π···π interactions between the phen components, and the 2D supramolecular layers further interweave into 3D supramolecular aggregates through cross-stacking.

2. A method for preparing the X-type interwoven supramolecular light conversion material according to claim 1, characterized in that, The X-type interwoven supermolecular light conversion material is prepared by a solvothermal synthesis method with H2edd, phen and Zn(NO3)2·6H2O as raw materials and a mixed solution of DMF and water as a solvent.

3. The method of claim 2, wherein the X-type interwoven supramolecular light converting material is prepared by the steps of: The preparation method specifically comprises the following steps: (1) mixing the raw materials and the solvent to form a reaction system, and placing the reaction system in a sealed container; the molar ratio of the raw materials H2edd:phen:Zn(NO3)2·6H2O is 1:1:2; the volume ratio of the solvent DMF and water is 3-6:6-9; (2) stirring the reaction system at room temperature for 30 min, then increasing the reaction temperature to 110-150 DEG C, and reacting for 2-4 days, and then naturally cooling, filtering and drying to obtain blocky crystals.

4. The method of claim 3, wherein the X-type interwoven supramolecular light converting material is prepared by the steps of: The initial molar concentration of H2edd in the reaction system is 10 mmol / L.

5. The method for preparing the X-type interwoven supramolecular optical conversion material according to claim 3, characterized in that, In step (2), the reaction temperature of the reaction system is 120 DEG C; the drying refers to naturally drying the crystals in air at room temperature after washing with distilled water.

6. Use of an X-type interwoven supramolecular light converting material, characterized in that The X-type interwoven supermolecular light conversion material prepared by any one of the methods of claims 2-5 is applied to the preparation of a characteristic white light LED device.

7. Use of an X-type interwoven supramolecular light converting material, characterized in that The X-type interwoven supermolecular light conversion material prepared by any one of the methods of claims 2-5 is applied to the preparation of a composite fluorescent material.

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