CN110698683B - One-dimensional dysprosium polymer and preparation method thereof - Google Patents

One-dimensional dysprosium polymer and preparation method thereof Download PDF

Info

Publication number
CN110698683B
CN110698683B CN201910923264.7A CN201910923264A CN110698683B CN 110698683 B CN110698683 B CN 110698683B CN 201910923264 A CN201910923264 A CN 201910923264A CN 110698683 B CN110698683 B CN 110698683B
Authority
CN
China
Prior art keywords
dysprosium
polymer
preparation
dimensional
anode
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.)
Active
Application number
CN201910923264.7A
Other languages
Chinese (zh)
Other versions
CN110698683A (en
Inventor
邹华红
全汉柏
梁福沛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangzhou Chenze Intellectual Property Service Co ltd
Original Assignee
Guangxi Normal University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Guangxi Normal University filed Critical Guangxi Normal University
Priority to CN201910923264.7A priority Critical patent/CN110698683B/en
Publication of CN110698683A publication Critical patent/CN110698683A/en
Application granted granted Critical
Publication of CN110698683B publication Critical patent/CN110698683B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G83/00Macromolecular compounds not provided for in groups C08G2/00 - C08G81/00
    • C08G83/008Supramolecular polymers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)

Abstract

本发明公开了一种一维镝聚合物及其制备方法。所述的一维镝聚合物的分子式为:[C6H10O11Dy·2(H2O)]n,n为整数且n≥1;该镝聚合物属于单斜晶系,P21/n空间群。所述镝聚合物的制备方法为:将六水合硝酸镝、樟脑酸或吡啶‑2,6‑二甲酸溶于水中,所得混合液置于敞口容器中,插入阳极和阴极,通电电解,电解结束后对所得物料过滤,收集滤液,于加热或不加热条件下反应,反应物静置,有晶体析出,收集晶体,即得;其中,阳极和阴极均采用石墨电极。本发明所述方法制备方法简单易控、安全、反应条件温和、成本低廉而且重复性好。

Figure 201910923264

The invention discloses a one-dimensional dysprosium polymer and a preparation method thereof. The molecular formula of the one-dimensional dysprosium polymer is: [C 6 H 10 O 11 Dy·2(H 2 O)] n , where n is an integer and n≥1; the dysprosium polymer belongs to the monoclinic system, P2 1 /n space group. The preparation method of the dysprosium polymer is as follows: dissolving dysprosium nitrate hexahydrate, camphor acid or pyridine-2,6-dicarboxylic acid in water, placing the obtained mixed solution in an open container, inserting an anode and a cathode, electrifying electrolysis, and electrolyzing the dysprosium polymer. After the end, filter the obtained material, collect the filtrate, react under heating or non-heating conditions, stand the reactant, crystals are precipitated, and the crystals are collected; wherein, graphite electrodes are used for both the anode and the cathode. The preparation method of the method of the invention is simple, easy to control, safe, mild in reaction conditions, low in cost and good in repeatability.

Figure 201910923264

Description

One-dimensional dysprosium polymer and preparation method thereof
Technical Field
The invention relates to a one-dimensional dysprosium polymer and a preparation method thereof, belonging to the technical field of materials.
Background
Mellitic acid (also known as 1,2,3,4,5, 6-mellitic acid or mellitic acid) contains abundant carboxyl functional groups, has strong coordination capacity, can be used as a ligand of a metal complex, particularly an actinide complex of the metal complex, and has good fluorescence performance. However, the mellitic acid salt in nature is usually present in the beeswax, is a rare organic mineral, and the price is very expensive, and the price is 900 yuan/g in the market at present, so that the use of the carboxylic acid ligand is greatly limited. In the prior art, graphite oxide and fuming nitric acid are also used for carrying out a co-thermal reaction to generate mellitic acid, but the product obtained by the method has a lot of impurities and is difficult to purify, and NO is generated2And the like, are easy to explode and pollute the air.
The prior actinide complex using mellitic acid as ligand is usually prepared by directly reacting mellitic acid with corresponding metal salt to generate a target compound, but the method has the defects of high cost, difficult purification and the like caused by obtaining mellitic acid, and has the defects of low reaction condition because the temperature is usually above 120 ℃ during direct reaction. At present, no relevant report that mellitic acid obtained by electrolyzing camphoric acid or pyridine-2, 6-dicarboxylic acid by using a graphite electrode reacts with metal salt under mild conditions to obtain a dysprosium mellitic acid complex is found.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides a one-dimensional dysprosium polymer with a novel structure and a preparation method thereof.
The molecular formula of the one-dimensional dysprosium polymer is as follows: [ C ]6H10O11Dy·2(H2O)]nN is an integer and n is not less than 1; the one-dimensional dysprosium polymer belongs to a monoclinic system, P21The/n space group, the unit cell parameters are:
Figure BDA0002218245140000011
Figure BDA0002218245140000012
α=90.00°,β=100.397(2)°,γ=90.00°。
the repeating unit of the one-dimensional dysprosium polymer is a mononuclear dysprosium complex with the molecular formula of C6H14DyO13Molecular weight is 456.67, and the ligand is 1,2,3,4,5, 6-mellitic acid.
The invention also provides a preparation method of the one-dimensional dysprosium polymer, which comprises the following steps: dissolving dysprosium nitrate hexahydrate, camphoric acid or pyridine-2, 6-dicarboxylic acid in water, placing the obtained mixed solution in an open container, inserting an anode and a cathode, electrifying and electrolyzing, filtering the obtained material after electrolysis, collecting filtrate, reacting under heating or non-heating conditions, standing the reactant, separating out crystals, and collecting the crystals to obtain the compound; wherein, the anode and the cathode both adopt graphite electrodes.
In the preparation method, the molar ratio of the dysprosium nitrate hexahydrate to the camphoric acid or the pyridine-2, 6-dicarboxylic acid is a stoichiometric ratio, specifically 2: 1. in actual practice, dysprosium nitrate hexahydrate may be in relative excess.
In the above preparation method, the amount of water is preferably such that most of the camphoric acid is dissolved but slightly precipitated. Specifically, the amount of water used for the whole raw materials participating in the reaction is usually 15 to 20mL based on 0.5mmol of camphoric acid or pyridine-2, 6-dicarboxylic acid. In the specific dissolving step, dysprosium nitrate hexahydrate and camphorate or pyridine-2, 6-dicarboxylic acid are mixed and then dissolved in distilled water, or the dysprosium nitrate hexahydrate can be added after the camphorate or the pyridine-2, 6-dicarboxylic acid is dissolved in water and stirred for a plurality of minutes.
In the preparation method, the graphite electrode is a commercial electrode, and further processing is not needed before use. The power supply for electrolysis is a direct current power supply, and is usually between 5 and 20V. The period of the electrolysis is preferably at least 5 hours or more, and it is preferable to stop the electrolysis when there is a substance falling off from the graphite electrode as the anode during the electrolysis, and the period of time required for this is generally 18 to 24 hours.
In the above production method, the time required for obtaining the target product when the reaction is carried out without heating is longer than that under heating, and it usually takes 7 to 15 days. When the reaction is carried out under heating conditions, it is preferable to control the reaction at a temperature of 80 ℃ or less, preferably 50 to 65 ℃, and the time of the reaction under the preferable conditions is usually controlled to 18 to 24 hours.
Compared with the prior art, the one-dimensional dysprosium polymer with a novel structure is obtained in a mild environment (the reaction temperature is less than or equal to 80 ℃) by taking the cheap camphoric acid or the pyridine-2, 6-dicarboxylic acid as the raw material, and compared with the prior method of directly taking the mellitic acid as the ligand and synthesizing the dysprosium complex at the temperature of more than 120 ℃, the preparation method is simple, easy to control, safe, mild in reaction condition, low in cost and good in repeatability.
Drawings
FIG. 1 shows [ C ] obtained in example 1 of the present invention6H10O11Dy·2(H2O)]nThe metal coordination environment diagram of (1);
FIG. 2 shows [ C ] obtained in example 1 of the present invention6H10O11Dy·2(H2O)]nThe ligand coordination environment diagram of (1);
FIG. 3 shows [ C ] obtained in example 1 of the present invention6H10O11Dy·2(H2O)]nA one-dimensional structure diagram.
Detailed Description
The present invention will be better understood from the following detailed description of specific examples, which should not be construed as limiting the scope of the present invention.
Example 1
Mixing 100mg (0.5mmol) camphoric acid and 457mg (1mmol) Dy (NO)3)3·6H2Adding O into a 50mL beaker, adding 20mL of distilled water, stirring at normal temperature for 10min, stopping stirring, inserting two graphite electrodes (one is used as an anode and the other is used as a cathode), electrifying for 24h under 12V direct current voltage (at the moment, the graphite electrode as the anode is observed to have substance falling off), stopping electrifying, filtering out impurities such as graphite slag and the like, collecting filtrate, filling into a 20mL sample bottle, covering the sample bottle with a cover, putting the sample bottle into a 60 ℃ oven for reaction for 24h, taking out, standing and cooling, separating out colorless transparent strip crystals at the bottom of the sample bottle, collecting the crystals, and drying. The yield was 8.9% (based on dysprosium nitrate hexahydrate). Elemental analysis (%) (C)6H14DyO13) The experimental values are C, 15.61, H, 3.10; theoretical values of C,15.78, H, 3.09.
Selecting the crystals with proper size obtained in the embodiment, placing the crystals on a Supernova single crystal diffractometer of Agilent company, and carrying out monochromatization by using graphite
Figure BDA0002218245140000021
And (4) performing single crystal test by using rays. Under the condition of 295K, the method comprises
Figure BDA0002218245140000031
The diffraction points are collected in a scanning mode within the range of more than or equal to 2.9 degrees and less than or equal to 25.0 degrees. The initial crystal structures of the products obtained in the embodiment are solved by adopting a SHELXS-97 and Olex-2 direct method, the geometric hydrogenation is carried out, and the non-hydrogen atom coordinates and the anisotropic thermal parameters are refined by adopting a SHELXL-97 full matrix least square method. The obtained crystallographic data are shown in the following table 1, partial bond length and bond angle data are shown in the following table 2, and the one-dimensional polymerization diagram of the obtained colorless strip crystal is shown in fig. 3, wherein fig. 1 is a metal coordination environment diagram of the obtained colorless strip crystal, and fig. 2 is a ligand coordination environment diagram of the obtained colorless strip crystal. Therefore, it was confirmed that the crystal obtained in this example was a one-dimensional dysprosium polymer [ C ]6H10O11Dy·2(H2O)]nThe repeating unit of the polymer is a mononuclear dysprosium complex with a molecular formula of C6H14DyO13Molecular weight is 456.67, and the ligand is 1,2,3,4,5, 6-mellitic acid.
Table 1: [ C ]6H10O11Dy·2(H2O)]nCrystallographic data of
Figure BDA0002218245140000032
Table 2: [ C ]6H10 O11Dy·2(H2O)]nPartial bond length of
Figure BDA0002218245140000033
Key angle (degree) table
Figure BDA0002218245140000034
Figure BDA0002218245140000041
Comparative example 1
Example 1 was repeated except that water was changed to a single solvent such as methanol, acetonitrile, dichloromethane, chloroform, DMF or DMSO, or water and the above single solvent were changed in a ratio of 1: 1, and the volume ratio of the mixed solvent to the mixed solvent. As a result, no crystalline or other shaped (e.g., powdery) product is formed.
Comparative example 2
Example 1 was repeated except that dysprosium acetate tetrahydrate, dysprosium perchlorate hexahydrate or dysprosium chloride hexahydrate was used in place of dysprosium nitrate hexahydrate, and an acetic acid molecule (or CH) was desired3COO-) Perchlorate (or ClO)4 -) Or Cl-The ions can replace water molecules participating in coordination, or a complex with a new structure is obtained through bridging of acetate or perchlorate, but no crystal is obtained, which indicates that the thermodynamic conditions for forming dysprosium polymer and crystallizing cannot be achieved by using other dysprosium salts.
Example 2
Example 1 was repeated except that pyridine-2, 6-dicarboxylic acid was used instead of camphoric acid.
As a result, colorless transparent crystals in the form of stripes were obtained. The yield was 8.3% (based on dysprosium nitrate hexahydrate).
The product obtained in the example is analyzed by single crystal diffraction, and the obtained colorless transparent strip crystal is determined to be a one-dimensional dysprosium polymer [ C ]6H10O11Dy·2(H2O)]n
Example 3
Example 1 was repeated except that the collected filtrate was reacted at room temperature for 7 days.
As a result, colorless transparent crystals in the form of stripes were obtained. The yield was 7.2% (based on dysprosium nitrate hexahydrate).
The product obtained in the example is analyzed by single crystal diffraction, and the obtained colorless transparent strip crystal is determined to be a one-dimensional dysprosium polymer [ C ]6H10O11Dy·2(H2O)]n
Example 4
Example 1 was repeated, except that the reaction temperature was changed to 50 ℃.
As a result, colorless transparent crystals in the form of stripes were obtained. The yield was 6.6% (based on dysprosium nitrate hexahydrate).
The product obtained in this example was subjected to single crystal diffractionAnalyzing and determining the obtained colorless transparent strip crystal as one-dimensional dysprosium polymer [ C ]6H10O11Dy·2(H2O)]n

Claims (4)

1.一维镝聚合物的制备方法,其特征在于:将六水合硝酸镝、樟脑酸或吡啶-2,6-二甲酸溶于水中,所得混合液置于敞口容器中,插入阳极和阴极,通电电解,电解结束后对所得物料过滤,收集滤液,于加热或不加热条件下反应,反应物静置,有晶体析出,收集晶体,即得;其中,1. the preparation method of one-dimensional dysprosium polymer, it is characterized in that: dysprosium nitrate hexahydrate, camphor acid or pyridine-2,6-dicarboxylic acid are dissolved in water, gained mixed solution is placed in open container, insert anode and cathode , electrify and electrolyze, filter the obtained material after the electrolysis, collect the filtrate, react under heating or non-heating conditions, the reactant is allowed to stand, crystals are precipitated, and the crystals are collected to obtain; wherein, 阳极和阴极均采用石墨电极;Both anode and cathode use graphite electrodes; 当反应在加热条件下进行时,反应温度≤80 ℃;When the reaction is carried out under heating conditions, the reaction temperature is less than or equal to 80 °C; 所述的一维镝聚合物的分子式为:[C6H10O11Dy·2(H2O)]n,n为整数且n≥1;The molecular formula of the one-dimensional dysprosium polymer is: [C 6 H 10 O 11 Dy·2(H 2 O)] n , where n is an integer and n≥1; 所述的一维镝聚合物属于单斜晶系,P21/n空间群,晶胞参数为:a = 8.3869(5) Å,b =9.3292(7) Å,c = 16.2395(11) Å,α = 90.00o, β = 100.397(2)o, γ = 90.00oThe one-dimensional dysprosium polymer belongs to the monoclinic crystal system, P 2 1 /n space group, and the unit cell parameters are: a = 8.3869(5) Å, b = 9.3292(7) Å, c = 16.2395(11) Å , α = 90.00 o , β = 100.397(2) o , γ = 90.00 o . 2.根据权利要求1所述的制备方法,其特征在于:反应在50-65℃条件下进行。2. The preparation method according to claim 1, wherein the reaction is carried out at 50-65°C. 3.根据权利要求1或2所述的制备方法,其特征在于:通电电解的时间为≥5h。3. The preparation method according to claim 1 or 2, characterized in that: the time of electrification and electrolysis is ≥ 5h. 4.根据权利要求1或2所述的制备方法,其特征在于:在通电电解时,当作为阳极的石墨电极上有物质脱落时停止通电。4. The preparation method according to claim 1 or 2, characterized in that: during electrolysis with electricity, when there is material falling off on the graphite electrode used as the anode, the electricity is stopped.
CN201910923264.7A 2019-09-27 2019-09-27 One-dimensional dysprosium polymer and preparation method thereof Active CN110698683B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910923264.7A CN110698683B (en) 2019-09-27 2019-09-27 One-dimensional dysprosium polymer and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910923264.7A CN110698683B (en) 2019-09-27 2019-09-27 One-dimensional dysprosium polymer and preparation method thereof

Publications (2)

Publication Number Publication Date
CN110698683A CN110698683A (en) 2020-01-17
CN110698683B true CN110698683B (en) 2021-08-24

Family

ID=69196645

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910923264.7A Active CN110698683B (en) 2019-09-27 2019-09-27 One-dimensional dysprosium polymer and preparation method thereof

Country Status (1)

Country Link
CN (1) CN110698683B (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004256892A (en) * 2003-02-27 2004-09-16 Kurita Water Ind Ltd Method for producing aromatic carboxylic acid
CN101392397A (en) * 2008-10-21 2009-03-25 湖南大学 An electrochemical treatment method for forming an oxide film on the surface of an aluminum or aluminum alloy material
CN101473069A (en) * 2006-05-16 2009-07-01 巴斯夫欧洲公司 Process for preparing porous metal organic frameworks
CN101469431A (en) * 2007-12-24 2009-07-01 清华大学 Method for preparing nano oxidized graphite particle or flake graphite and benzene hexacarbonic acid simultaneously
CN103794792A (en) * 2014-02-28 2014-05-14 江苏丽港科技有限公司 Method for preparing nano carbon sphere materials for negative electrode of lithium ion battery
CN104831307A (en) * 2015-05-13 2015-08-12 东南大学 Preparation method of micro/nano graphene sheet
CN105061480A (en) * 2015-08-13 2015-11-18 天津师范大学 Mellitic acid rare-earth coordination polymer as well as preparation method and application
CN108864437A (en) * 2018-06-04 2018-11-23 盐城工学院 The synthetic method of aromatic carboxylic acids class transition metal silver complex

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004256892A (en) * 2003-02-27 2004-09-16 Kurita Water Ind Ltd Method for producing aromatic carboxylic acid
CN101473069A (en) * 2006-05-16 2009-07-01 巴斯夫欧洲公司 Process for preparing porous metal organic frameworks
CN101469431A (en) * 2007-12-24 2009-07-01 清华大学 Method for preparing nano oxidized graphite particle or flake graphite and benzene hexacarbonic acid simultaneously
CN101392397A (en) * 2008-10-21 2009-03-25 湖南大学 An electrochemical treatment method for forming an oxide film on the surface of an aluminum or aluminum alloy material
CN103794792A (en) * 2014-02-28 2014-05-14 江苏丽港科技有限公司 Method for preparing nano carbon sphere materials for negative electrode of lithium ion battery
CN104831307A (en) * 2015-05-13 2015-08-12 东南大学 Preparation method of micro/nano graphene sheet
CN105061480A (en) * 2015-08-13 2015-11-18 天津师范大学 Mellitic acid rare-earth coordination polymer as well as preparation method and application
CN108864437A (en) * 2018-06-04 2018-11-23 盐城工学院 The synthetic method of aromatic carboxylic acids class transition metal silver complex

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
Mixed Alkali Metal/Transition Metal Coordination Polymers with the Mellitic Acid Hexaanion: 2-Dimensional Hexagonal Magnetic Nets;Simon M. et al.;《Inorganic Chemistry》;20101231;第49卷;第3441-3448页 *
Structural Variation in Mellitate Complexes of First-Row Transition Metals: What Chance for Design?;William C. et al.;《Cryst. Growth Des.》;20141028;第14卷;第6282-6293页 *
Synthesis and separation of mellitic acid and graphite oxide colloid through electrochemical oxidation of graphite in deionized water;Cui A. et al.;《Electrochemistry Communications》;20081210;第11卷;第409-412页 *

Also Published As

Publication number Publication date
CN110698683A (en) 2020-01-17

Similar Documents

Publication Publication Date Title
Feng et al. A series of lanthanide–organic polymers incorporating nitrogen-heterocyclic and aliphatic carboxylate mixed-ligands: structures, luminescent and magnetic properties
JP2014518838A (en) Method for producing lithium sulfide
WO2013033922A1 (en) Metal nickel-imidazole chiral nano clathrate complex and preparation process thereof
Shi et al. Synthesis and characterization of polymorphs of photoluminescent Eu (III)-(2, 5-furandicarboxylic acid, oxalic acid) MOFs
CN106831854B (en) A kind of six vanadic acid alcoxyl derivative of mixed valence and preparation method thereof
Wu et al. Hydro (solvo) thermal synthesis, structures, luminescence of 2-D zinc (II) and 1-D copper (II) complexes constructed from pyridine-2, 6-Dicarboxylic acid N-Oxide and decarboxylation of the ligand
CN104230968A (en) Cadmium-containing dual-core polymer with mixed-ligand and preparation method of cadmium-containing dual-core polymer
CN101108827A (en) A kind of method for preparing acetic acid type ionic liquid
Akhbari et al. Reversible solid state structural transformation of a polyhapto lead (II) polymeric chain to a tetrahapto lead (II) two-dimensional network by thermal dehydration with no change in nanoplate morphology
CN110698683B (en) One-dimensional dysprosium polymer and preparation method thereof
CN113957461B (en) An electrochemical synthesis method of 1,1′-binaphthyl compounds
CN108424527B (en) Synthesis of Zn(II) Complexes with Three-Dimensional Mixed Ligands and Application of Fluorescent Probes
CN110804189B (en) Three-dimensional lutetium polymer and preparation method thereof
CN115233243A (en) A kind of preparation method of 2,4,5-trisubstituted oxazole derivatives under electrocatalysis
Deacon et al. Synthesis and structural properties of anhydrous rare earth cinnamates,[RE (cinn) 3]
CN101597043B (en) Zirconium phosphate crystalline material prepared in eutectic mixture and preparation method thereof
CN104817583B (en) Carbon Bridged Bisamido Rare Earth Amines and Their Preparation and Application in Catalytic Amidation Synthesis of Aldehydes and Amines
Yang et al. Syntheses, crystal structures and optical properties of six homochiral coordination networks based on phenyl acid-amino acids
CN113444044B (en) Dielectric transition material based on squaric acid and preparation method thereof
CN106188156A (en) A kind of 3 hydroxyl 2 pyridine carboxylic acid nickel coordination polymers and preparation method thereof
Sun et al. Homochiral 3D lanthanide camphorates with high thermal stability
CN104130292A (en) Three dimensional coordination polymer with double core structure and preparation method thereof
CN113956493B (en) Non-alkyl tin oxygen cluster compound and synthetic method and application thereof
CN109836326B (en) A kind of Cu metal-organic framework material based on triphenylene carboxylic acid ligand, preparation method and application thereof
CN107236210A (en) A kind of application of glucaric acid zinc coordination polymer in heat stabilizer is prepared

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20231025

Address after: Room B565, No. 6, Songgang Street, Cencun Village, Tianhe District, Guangzhou, Guangdong 510000

Patentee after: Guangzhou Chenze Intellectual Property Service Co.,Ltd.

Address before: 541004 No. 15 Yucai Road, Qixing District, Guilin, the Guangxi Zhuang Autonomous Region

Patentee before: Guangxi Normal University