CN115368388B - Binuclear dysprosium single-molecule magnet and preparation method and application thereof - Google Patents
Binuclear dysprosium single-molecule magnet and preparation method and application thereof Download PDFInfo
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- KBQHZAAAGSGFKK-UHFFFAOYSA-N dysprosium atom Chemical compound [Dy] KBQHZAAAGSGFKK-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 229910052692 Dysprosium Inorganic materials 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- -1 (2-pyridylmethyl) amino Chemical group 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000000696 magnetic material Substances 0.000 claims abstract description 8
- BSKHPKMHTQYZBB-UHFFFAOYSA-N 2-methylpyridine Chemical compound CC1=CC=CC=N1 BSKHPKMHTQYZBB-UHFFFAOYSA-N 0.000 claims abstract description 7
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 claims description 36
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 30
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 18
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N 1,4-Benzenediol Natural products OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 claims description 13
- 239000013078 crystal Substances 0.000 claims description 13
- 238000012360 testing method Methods 0.000 claims description 9
- 239000002244 precipitate Substances 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 6
- 239000003446 ligand Substances 0.000 claims description 6
- 238000009792 diffusion process Methods 0.000 claims description 4
- 239000000706 filtrate Substances 0.000 claims description 4
- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 3
- 238000010438 heat treatment Methods 0.000 claims 1
- 238000010992 reflux Methods 0.000 claims 1
- 230000000903 blocking effect Effects 0.000 abstract description 9
- 238000003860 storage Methods 0.000 abstract description 4
- 230000003287 optical effect Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 7
- 230000004888 barrier function Effects 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005415 magnetization Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000634 powder X-ray diffraction Methods 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 238000001308 synthesis method Methods 0.000 description 2
- GPAAEXYTRXIWHR-UHFFFAOYSA-N (1-methylpiperidin-1-ium-1-yl)methanesulfonate Chemical compound [O-]S(=O)(=O)C[N+]1(C)CCCCC1 GPAAEXYTRXIWHR-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000238366 Cephalopoda Species 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005564 crystal structure determination Methods 0.000 description 1
- 238000002447 crystallographic data Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000005283 ground state Effects 0.000 description 1
- 229910021644 lanthanide ion Inorganic materials 0.000 description 1
- 230000005381 magnetic domain Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 239000013110 organic ligand Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000001338 self-assembly Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000000547 structure data Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F5/00—Compounds containing elements of Groups 3 or 13 of the Periodic Table
- C07F5/003—Compounds containing elements of Groups 3 or 13 of the Periodic Table without C-Metal linkages
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F5/00—Compounds containing elements of Groups 3 or 13 of the Periodic Table
- C07F5/02—Boron compounds
- C07F5/027—Organoboranes and organoborohydrides
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/42—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of organic or organo-metallic materials, e.g. graphene
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
- C07B2200/00—Indexing scheme relating to specific properties of organic compounds
- C07B2200/13—Crystalline forms, e.g. polymorphs
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
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- Power Engineering (AREA)
- Hard Magnetic Materials (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
The invention discloses a binuclear dysprosium single-molecule magnet and a preparation method and application thereof, wherein the binuclear dysprosium single-molecule magnet has a structural formula as follows: [ Dy ] 2 (BPA‑TPA) 2 (C 6 H 4 O 2 )](BPh 4 ) 4 ·4CH 3 CN, wherein BPA-TPA is 2, 6-bis (2-pyridylmethyl) amino) picoline. The binuclear dysprosium single-molecule magnet belongs to a monoclinic system and P21/c space group. Compared with the prior art, the invention has the following advantages: (1) The binuclear dysprosium single-molecule magnet can show typical slow relaxation behavior under a zero field, has the characteristics of single-molecule magnet, has a blocking temperature of up to 26K, and can be used as a molecular-based magnetic material in novel high-density information storage equipment (such as optical discs, hard magnetic discs and the like); (2) The binuclear dysprosium single-molecule magnet is not weathered in air, and has good stability; (3) The method has the advantages of safe and simple process, high controllability and good reproducibility.
Description
Technical Field
The invention belongs to the technical field of magnetic materials, and relates to a single-molecule magnet material, in particular to a binuclear dysprosium single-molecule magnet, a preparation method and application thereof.
Background
Compared with the traditional magnetic material, the single-molecule magnet has the characteristics of low relative density, high transparency, small volume, easy modification and cutting and the like, and has great application potential in the fields of high-density information storage, quantum computers and molecular spinning. Single molecule magnets are a class of magnetic compounds formed by the chemical self-assembly of anisotropic metal ions and organic ligands by molecules. In single molecule magnet materials, each molecule is an isolated magnetic domain, at a certain temperature (known as the blocking temperatureT B ) The magnetic order and magnetization can be maintained for a long time without the existence of an external magnetic field.
The lanthanide ion has a large number of single electrons, has large ground spin and strong magnetic anisotropy, and is an ideal choice for designing single-molecule magnets. In particular Dy (III) ions, which have a Kramer electron layer structure (the f layer has odd electrons), the ground state of dysprosium-based single molecule magnets is bistable, unaffected by quantum tunneling caused by the transverse ligand field. Thus, dysprosium-based single-molecule magnets have attracted attention from many researchers and have made a significant breakthrough with effective energy barriers and blocking temperatures up to 1540cm -1 And 80K (Science, 2018,362,1400-1403). However, synthesis of these high performance dysprosium-based single molecule magnets often needs to be performed under anhydrous and anaerobic extreme conditions, thus making it inconvenient to control the synthesis process, poor in repetitive effect, and low in yield. And part of the materials are unstable at normal temperature and in air and are easy to decompose or weather. Meanwhile, although more rare earth single-molecule magnets are synthesized, single-molecule magnets with high energy barriers and high blocking temperatures are fewer. Therefore, the design and synthesis of the novel rare earth single-molecule magnet with stable and high performance have very important significance.
Disclosure of Invention
The technical problems to be solved are as follows: in order to overcome the defects of the prior art, a stable dysprosium complex with excellent single-molecule magnet property is obtained, and a synthesis method with mild and controllable synthesis conditions and good repeatability is provided.
The technical scheme is as follows: the binuclear dysprosium single-molecule magnet has a structural formula as follows: [ Dy ] 2 (BPA-TPA) 2 (C 6 H 4 O 2 )](BPh 4 ) 4 ·4CH 3 CN, wherein BPA-TPA is 2, 6-bis (2-pyridylmethyl) amino) picoline, the dysprosium single molecule magnet having the chemical structural formula:
preferably, the structural unit of the binuclear dysprosium single-molecule magnet is as follows: the crystal belongs to monoclinic system, P21/c space group, and the unit cell parameter isα＝90°，β＝99.477(5)°，γ＝90°。
Preferably, dy (III) coordinates seven nitrogen atoms of one BPA-TPA ligand, and hydroquinone anions bridge the ligand to form a binuclear dysprosium structure. The coordination configuration of each Dy (III) is an octa-coordinated triangular dodecahedron.
Preferably, the binuclear dysprosium single-molecule magnet is a yellow blocky crystal, shows typical slow relaxation behavior under zero field, has the characteristic of single-molecule magnet, and has an energy barrier of 730K and a blocking temperature of 16K.
The preparation method of the binuclear dysprosium single-molecule magnet, which comprises the following steps:
2, 6-bis (2-pyridylmethyl) amino) picoline (BPA-TPA) and DyCl 3 ·6H 2 O is dissolved in methanol, heated and refluxed for 4 hours, filtered to obtain yellow clear solution, then methanol solution dissolved with sodium tetraphenylborate is added to immediately generate a large amount of white precipitate, after filtration, the precipitate is dissolved in acetonitrile, acetonitrile solution dissolved with NaH and hydroquinone is added to the solution, heated and refluxed for 12 hours, filtration is carried out, filtrate is transferred into a test tube, diethyl ether is slowly added to the solution, and the solution is stood for two-phase diffusion to obtain the binuclear dysprosium single-molecule magnet. Wherein the DyCl 3 ·6H 2 The molar ratio of O to BPA-TPA is 1:1-1.5, per 1mmol DyCl 3 ·6H 2 O corresponds to 20-25 mL of methanol per 1mmol of DyCl 3 ·6H 2 O corresponds to 2-4 mmol of sodium tetraphenylborate, per 1mmol of DyCl 3 ·6H 2 O corresponds to 1.5-2 mmol of NaH per 1mmol of DyCl 3 ·6H 2 O corresponds to 0.5-1 mmol of NaH per 1mmol of DyCl 3 ·6H 2 O corresponds to 10-20 mL of acetonitrile.
Preferably, the volume of the diethyl ether is 3-4 times that of acetonitrile.
Preferably, the standing time is 2-4 days, and yellow blocky crystals are obtained.
The application of any of the binuclear dysprosium single-molecule magnets in preparing molecular-based magnetic materials.
The beneficial effects are that: (1) The binuclear dysprosium single-molecule magnet can show typical slow relaxation behavior under a zero field, has the characteristics of single-molecule magnet, has a blocking temperature of up to 26K, and can be used as a molecular-based magnetic material in novel high-density information storage equipment (such as optical discs, hard magnetic discs and the like); (2) The binuclear dysprosium single-molecule magnet is not weathered in air, and has good stability; (3) The method has the advantages of safe and simple process, high controllability and good reproducibility.
Drawings
FIG. 1 shows a binuclear dysprosium single-molecule magnet [ Dy ] 2 (BPA-TPA) 2 (C 6 H 4 O 2 )](BPh 4 ) 4 ·4CH 3 Crystal structure diagram of CN;
FIG. 2 shows a binuclear dysprosium single-molecule magnet [ Dy ] 2 (BPA-TPA) 2 (C 6 H 4 O 2 )](BPh 4 ) 4 ·4CH 3 Powder X-ray diffraction pattern of CN;
FIG. 3 shows a binuclear dysprosium single-molecule magnet [ Dy ] 2 (BPA-TPA) 2 (C 6 H 4 O 2 )](BPh 4 ) 4 ·4CH 3 A DC magnetic susceptibility test chart of CN;
FIG. 4 shows a binuclear dysprosium single-molecule magnet [ Dy ] 2 (BPA-TPA) 2 (C 6 H 4 O 2 )](BPh 4 ) 4 ·4CH 3 Hysteresis loop diagram of CN;
FIG. 5 shows a binuclear dysprosium single-molecule magnet [ Dy ] 2 (BPA-TPA) 2 (C 6 H 4 O 2 )](BPh 4 ) 4 ·4CH 3 An imaginary part ac susceptibility graph of CN;
FIG. 6 shows a binuclear dysprosium single-molecule magnet [ Dy ] 2 (BPA-TPA) 2 (C 6 H 4 O 2 )](BPh 4 ) 4 ·4CH 3 A relaxation time versus temperature plot of CN.
Detailed Description
The following examples further illustrate the invention but are not to be construed as limiting the invention. Modifications and substitutions to the method, steps or conditions of the invention without departing from the spirit and nature of the invention are intended to be within the scope of the invention. The technical means used in the examples are conventional means well known to those skilled in the art unless otherwise indicated.
Example 1
A preparation method of a binuclear dysprosium single-molecule magnet comprises the following steps: 2, 6-bis (2-pyridylmethyl) amino) picoline (BPA-TPA) (1 mmol) and DyCl 3 ·6H 2 O (1 mmol) is dissolved in 10mL of methanol, heated and refluxed for 4 hours, filtered to obtain yellow clear solution, then 10mL of methanol solution dissolved with sodium tetraphenylboron (2 mmol) is added to immediately generate a large amount of white precipitate, after filtration, the precipitate is dissolved in 5mL of acetonitrile, 5mL of acetonitrile solution dissolved with NaH (1.5 mmol) and hydroquinone (0.5 mmol) is added thereto, heated and refluxed for 12 hours, filtered, the filtrate is transferred into a test tube, 30mL of diethyl ether is slowly added thereto, and two-phase diffusion is carried out for 2 days, thus obtaining yellow crystals which are the binuclear dysprosium single-molecule magnet.
The yield of dysprosium single-molecule magnet prepared in this example was 62.7%.
Example 2
A preparation method of a binuclear dysprosium single-molecule magnet comprises the following steps: 2, 6-bis (2-pyridylmethyl) amino) picoline (BPA-TPA) (1.2 mmol) and DyCl 3 ·6H 2 O (1 mmol) is dissolved in 12mL of methanol, heated and refluxed for 4 hours, filtered to obtain yellow clear solution, then 10mL of methanol solution dissolved with sodium tetraphenylboron (2 mmol) is added to immediately generate a large amount of white precipitate, after filtration, the precipitate is dissolved in 5mL of acetonitrile, 8mL of acetonitrile solution dissolved with NaH (1.8 mmol) and hydroquinone (0.8 mmol) is added thereto, heated and refluxed for 12 hours, filtered, the filtrate is transferred into a test tube, 40mL of diethyl ether is slowly added thereto, and two-phase diffusion is carried out for 3 days, thus obtaining yellow crystals which are the binuclear dysprosium single-molecule magnet.
The yield of dysprosium single-molecule magnet prepared in this example was 66.2%.
The binuclear dysprosium single-molecule magnet prepared in this example is characterized as follows:
(1) Crystal structure determination
Selecting single crystal with proper size under microscope, and using graphite monochromized molybdenum target Mo K alpha on Bruker SMART Apex II CCD single crystal instrument at room temperatureAnd testing the structure. Data were collected and unit cells were determined using the APEXII program. The structural data were normalized and absorption corrected using SAINT and sadbs procedures. The structure was resolved using the SHELXTL-2016 procedure. All non-hydrogen atom coordinates are obtained by a difference Fourier synthesis method, the atomic coordinates and the anisotropic temperature factor are corrected by using a full matrix least square method, and all hydrogen atoms are hydrogenated by theory. The structure is shown in FIG. 1, the crystallographic data are shown in Table 1, and the coordination bond lengths are shown in Table 2.
Table 1 Crystal data of the complexes
Table 2 coordination bond Length data for the complexes
The block diagram of fig. 1 shows that: dy (III) coordinates with seven nitrogen atoms of a BPA-TPA ligand, and hydroquinone anions bridge the ligand to form a binuclear dysprosium structure. The coordination configuration of each Dy (III) is an octa-coordinated triangular dodecahedron.
(2) Determination of phase purity by powder X-ray diffraction
The phase purity of the colorless bulk crystal product obtained in this example was characterized using a Bruker D8 Advance powder X-ray diffractometer. As shown in fig. 2, the simulation curves were obtained by simulating single crystal structure data using Mercury software. The result shows that the dysprosium single-molecule magnet material has reliable phase purity, and provides guarantee for the application of the dysprosium single-molecule magnet material in a molecule-based magnetic material.
(3) Characterization of magnetic properties:
the magnetic measurement adopts a superconducting quantum interferometer Quantum Design MPMS SQUID VSM magnetic measurement system. The test temperature of the DC magnetic susceptibility is 2.0-300K, and the magnetic field is 0.1T. The test temperature of the magnetization intensity is 2-8K, and the magnetic field is 0-7T. The frequency range of the imaginary part alternating current magnetic susceptibility and the real part alternating current magnetic susceptibility is 1-999 Hz, and the temperature range is 2-50K.
As shown in FIG. 3, when the temperature is 300K, the product of the DC magnetic susceptibility (χ) and the temperature (T) is 26.60cm 3 mol - 1 K, slightly below the two spin-only Dy (III) (s=5/2, l=5, 6 H 15/2 g=4/3) theoretical value 28.34cm 3 k mol -1 . When the temperature starts to drop, the product remains almost unchanged, whereas when the temperature is below 6K, the value starts to drop drastically, due to the presence of important magnetic anisotropy in the system. The magnetization curve (fig. 4) shows that the complex exhibits hysteresis loop properties at 2-16K, confirming that the complex has single molecule magnet properties, and indicating that the blocking temperature of the complex can reach 16K. Under the condition of zero field, the imaginary part alternating current magnetic susceptibility χ' of the complex shows obvious temperature dependence and frequency dependence phenomena (figure 5) in the temperature range of 2-50K, and slow magnetic relaxation behavior is generated. By plotting the relaxation time (τ) and the temperature (T), as shown in fig. 6, the energy barrier of the dysprosium single ion magnet was 730K by performing arrhenius fitting on the data of the high temperature region.
In summary, the binuclear dysprosium single-molecule magnet material prepared by the invention is stable in air, can show typical slow relaxation behavior under zero field, has single-molecule magnet characteristics, and has an energy barrier of 730K and a blocking temperature of 16K. Such single molecule magnets, which have both stability and high blocking temperatures, are less common. The binuclear dysprosium single-molecule magnet material can be used as a molecule-based magnetic material in novel high-density information storage equipment (such as optical discs, hard magnetic discs and the like).
Claims (7)
1. The binuclear dysprosium single-molecule magnet is characterized by comprising the following structural formula:
[Dy 2 (BPA-TPA) 2 (C 6 H 4 O 2 )](BPh 4 ) 4 ·4CH 3 CN, wherein BPA-TPA is 2, 6-bis (2-pyridylmethyl) amino) picoline;
the chemical structural formula of the binuclear dysprosium single-molecule magnet is as follows:
the structural unit of the dysprosium single-molecule magnet is as follows: the crystal belongs to monoclinic system, P21/c space group, and the unit cell parameter is α＝90°，β＝99.477(5)°，γ＝90°。
2. The binuclear dysprosium single-molecule magnet according to claim 1, wherein each Dy (III) is coordinated with seven nitrogen atoms of one BPA-TPA ligand, and hydroquinone anions bridge the seven nitrogen atoms to form a binuclear dysprosium structure, and the coordination configuration of each Dy (III) is an octacoordinated triangular dodecahedron.
3. The method for preparing the binuclear dysprosium single-molecule magnet according to claim 1 or 2, which comprises the following steps: 2, 6-bis (2-pyridylmethyl) amino) picoline (BPA-TPA) and DyCl 3 ·6H 2 O is dissolved in methanol, heated and refluxed for 4 hours, filtered to obtain yellow clear solution, then methanol solution dissolved with sodium tetraphenylborate is added, a large amount of white precipitate is generated immediately,after filtration, the precipitate is dissolved in acetonitrile, acetonitrile solution dissolved with NaH and hydroquinone is added into the solution, heating reflux is carried out for 12 hours, filtration is carried out, filtrate is transferred into a test tube, diethyl ether is slowly added into the test tube, standing is carried out, and two-phase diffusion is carried out, thus obtaining the binuclear dysprosium single-molecule magnet.
4. The method for producing a binuclear dysprosium single-molecule magnet as defined in claim 3, wherein the DyCl 3 ·6H 2 The molar ratio of O to BPA-TPA is 1:1-1.5, per 1mmol DyCl 3 ·6H 2 O corresponds to 20-25 mL of methanol per 1mmol of DyCl 3 ·6H 2 O corresponds to 2-4 mmol of sodium tetraphenylborate, per 1mmol of DyCl 3 ·6H 2 O corresponds to 1.5-2 mmol of NaH per 1mmol of DyCl 3 ·6H 2 O corresponds to 0.5 to 1mmol of hydroquinone per 1mmol of DyCl 3 ·6H 2 O corresponds to 10-20 mL of acetonitrile.
5. The method for producing a binuclear dysprosium single-molecule magnet according to claim 3, wherein the volume of diethyl ether is 3 to 4 times that of acetonitrile.
6. The method for producing a binuclear dysprosium single-molecule magnet according to claim 3, wherein the standing time is 2 to 4 days, to obtain a yellow bulk crystal.
7. Use of the binuclear dysprosium single-molecule magnet according to claim 1 or 2 for the preparation of molecular-based magnetic materials.
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| CN109111472A (en) * | 2018-09-20 | 2019-01-01 | 杭州电子科技大学 | A kind of list double-core eutectic rare-earth magnetic complex and preparation method thereof |
| RU2728127C1 (en) * | 2019-07-10 | 2020-07-28 | Федеральное государственное бюджетное учреждение науки Институт проблем химической физики Российской Академии наук (ФГБУН ИПХФ РАН) | Binuclear crystalline complexes of rare-earth ions (3+), method for production thereof, method of producing magnetic polymer composites, use of magnetic polymer composites as photosensitive magnetic media for spintronics and memory devices |
| CN112341481A (en) * | 2020-11-16 | 2021-02-09 | 江苏科技大学 | Mononuclear dysprosium magnetic complex and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109111472A (en) * | 2018-09-20 | 2019-01-01 | 杭州电子科技大学 | A kind of list double-core eutectic rare-earth magnetic complex and preparation method thereof |
| RU2728127C1 (en) * | 2019-07-10 | 2020-07-28 | Федеральное государственное бюджетное учреждение науки Институт проблем химической физики Российской Академии наук (ФГБУН ИПХФ РАН) | Binuclear crystalline complexes of rare-earth ions (3+), method for production thereof, method of producing magnetic polymer composites, use of magnetic polymer composites as photosensitive magnetic media for spintronics and memory devices |
| CN112341481A (en) * | 2020-11-16 | 2021-02-09 | 江苏科技大学 | Mononuclear dysprosium magnetic complex and preparation method and application thereof |
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