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Multifunctional rare-earth complex and application thereof

A rare earth complex and multi-functional technology, applied in the application field of dysprosium, to achieve the effects of easy acquisition, lower production cost, and increased application range

Inactive Publication Date: 2013-07-10
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Rare earth complexes with optoelectronic and electromagnetic single functions have been widely and intensively studied, but there are no relevant reports in the literature on complexes with three functions of white light LED, ferroelectricity and single molecule magnet.

Method used

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  • Multifunctional rare-earth complex and application thereof
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  • Multifunctional rare-earth complex and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1 Preparation of multifunctional rare earth complexes

[0030] The specific synthesis method is: Dysprosium nitrate hexahydrate (0.043 g, 0.10 mmol), 3,5-bis(2-pyridine)-1,2,4-triazole (0.023 g, 0.10 mmol) and triethyl Amine (0.020 g, 0.2 mmol) was sequentially added to a Teflon-lined stainless steel reaction kettle containing 8 ml of methanol, sealed and sealed, heated at 120 degrees for 72 hours, and naturally cooled to room temperature to obtain colorless crystals. The rate is about 32%.

Embodiment 2

[0031] Embodiment 2 Determination of product structure

[0032] The product obtained in Example 1 was determined by single crystal diffraction, elemental analysis and infrared characterization, and its chemical structural formula is dihydroxy tetranitro tetrakis (3,5-bis(2-pyridine)-1,2,4-tri Dimethoxytetradysprosium (III).

[0033] The results of single crystal diffraction are as follows:

[0034]

[0035] The elemental analysis results are as follows:

[0036] Theoretical (%): C, 32.16; H, 2.65; N, 16.99. Found (%): C, 31.97; H, 2.74; N, 17.02. .

[0037] The infrared characterization results are as follows:

[0038] 3389 (broad peak), 1607 (moderately strong peak), 1571 (weak peak), 1501 (moderately strong peak), 1469 (moderately strong peak), 1465 (weak peak), 1414 (moderately strong peak), 1384 (very strong peak), 1335 (weak peak), 1287 (medium strong peak), 1155 (weak peak), 1116 (weak peak), 1040 (weak peak), 804 (weak peak), 750 (weak peak), 729 (medium strong ...

Embodiment 3

[0043] Example 3: At 300 K, take 200 mg of the product obtained in Example 1 under the action of 1500 V, 200 Hz alternating electric field, and the obtained saturation polarization is 0.16 μC cm ?2 , remanent polarization 0.10μC cm ?2 , the result is as image 3 shown.

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Abstract

The invention provides a multifunctional rare-earth complex, a preparation method thereof and application of the complex in a white light LED (Light Emitting Diode), a ferroelectric and a monomolecular magnet. The chemical molecular formula of obtained dihydroxyl.tetranitro.tetra(3,5-di(2-pyridine)-1,2,4-triazole).dimethoxy tetra-dysprosium (III) is Dy4(bpt)4(NO3)4(OH)2(OCH3)2.3CH3OH. The multifunctional rare-earth complex provided by the invention can be used for emitting obvious white light at room temperature and normal pressure under exciting light of 210-310 nanometers and transforming a color coordinate CIE from (0.300, 0.310) to (0.308, 0.322), shows the ferroelectric behavior at room temperature and normal pressure under the action of an alternating electric field at 100-1500 V and 200 Hz, achieves the maximal polarization intensity of 0.16 muC.cm<-2> during 1500 V, shows the monomolecular magnet behavior at low temperature in zero external field under the action of an AC (Alternating Current) magnetic field at 1-1488 Hz and achieves the characteristic relaxation time of 2.91*10<-7> s and the effective energy barrier of 115.51 K.

Description

technical field [0001] The invention relates to the technical field of dysprosium application, more specifically, to a multifunctional rare earth complex optoelectronic material and its application. Background technique [0002] Multifunctional optoelectronic materials refer to functional materials with two or more functions of light, electricity, magnetism, heat, sound, mechanics, etc. At present, complex multifunctional materials with optical, electrical and magnetic properties are a hot spot in the research of new materials. White light LED is a kind of optical lighting material with great potential. Ferroelectric material is a kind of pyroelectric material with broad application prospects. Single molecule magnet shows unique properties at low temperature and has become a new field in the field of magnetism. research hotspots. [0003] White LED has a very promising application prospect in lighting and other fields. At present, incandescent lamps, fluorescent lamps...

Claims

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Application Information

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IPC IPC(8): C07F5/00
Inventor 童明良郭鹏虎贾建华
Owner SUN YAT SEN UNIV
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