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Phenanthroline copper malonate ferroelectric electric functional material and preparation method thereof

A technology of phenanthroline copper malonate and ferroelectric functional materials, applied in the direction of copper organic compounds, can solve problems such as limited research results, and achieve the effects of low equipment requirements, easy industrialization, and fewer processes

Inactive Publication Date: 2013-08-07
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the research and application of ferroelectric materials mainly focus on Roche salt, potassium dihydrogen phosphate and barium titanate (BaTiO 3 ) and other inorganic compounds, while the research on metal-organic complex ferroelectric materials is in its infancy, and its research results are relatively limited

Method used

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  • Phenanthroline copper malonate ferroelectric electric functional material and preparation method thereof
  • Phenanthroline copper malonate ferroelectric electric functional material and preparation method thereof
  • Phenanthroline copper malonate ferroelectric electric functional material and preparation method thereof

Examples

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Embodiment 1

[0018] With 1.0mmol copper perchlorate (Cu(ClO 4 ) 2 ) was dissolved in 30mL deionized water to make a copper perchlorate solution; 1.0mmol malonic acid was dissolved in 20mL deionized water to make a malonic acid solution, and then added to the copper perchlorate solution, stirred and reacted to obtain light Blue copper malonate solution, then dissolve 1.0mmol o-phenanthroline in 20mL ethanol (purity 99.99%) to make o-phenanthroline ethanol solution, add o-phenanthroline ethanol solution to copper malonate solution , Stirring reaction, obtains o-phenanthroline malonate copper solution, then drips the NaOH solution that concentration is 1mol / L while stirring, to the pH value of o-phenanthroline malonate copper solution is 3.27, leaves standstill under room temperature until the copper phenanthroline malonate crystals are completely precipitated, the copper phenanthroline malonate crystals are dried and ground into a powder passing through a 100-mesh sieve to obtain a copper p...

Embodiment 2

[0020] Substantially the same as Example 1, the difference is that copper perchlorate is made of copper nitrate (Cu(NO 3 ) 2 ) instead, the concentration of copper nitrate solution is 0.01mol / L, the concentration of malonic acid solution is 0.01mol / L, the concentration of o-phenanthroline in ethanol solution is 0.01mol / L, and the concentration of NaOH solution is 1.5 mol / L Na 2 CO 3 For solution substitution, the pH of the copper o-phenanthroline malonate solution was 5.0.

Embodiment 3

[0022] Substantially the same as Example 1, the difference is that copper perchlorate is made of copper sulfate (CuSO 4 ) instead, the concentration of copper sulfate solution is 0.1mol / L, the concentration of malonic acid solution is 0.1mol / L, the concentration of o-phenanthroline in ethanol solution is 0.1mol / L, and the concentration of NaOH solution is 1.2 K in mol / L 2 CO 3 For solution substitution, the pH of the copper o-phenanthroline malonate solution was 4.57.

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Abstract

The invention discloses a phenanthroline copper malonate ferroelectric functional material and a preparation method thereof. The ferroelectric functional material has a molecular formula of [Cu3(C12H8N2)3(H2O)2(C3H2O4)3].11H2O, is blue powder of which the purity is not lower than 99%, and has a C2 polarity point group structure. The ferroelectric characteristic parameters of the ferroelectric functional material are as follows: the remanent polarization strength 2Pr is equal to 0.09 muC.cm<-2>, the coercive electric field 2Ec is equal to 1.40kv.cm<-1>, and the saturation polarization strength Ps is equal to 0.39 muC.cm<-2>; and the cell parameter of the powder of the ferroelectric functional material is as follows: the saturation polarization strength of the ferroelectric functional material is 1.56 times that of Rochelle salt, so that the ferroelectric functional material is a new ferroelectric with excellent ferroelectric performance. The ferroelectric functional material is prepared by reacting a cupric salt solution with a methane dicarboxylic acid solution at first, then reacting with a phenanthroline solution and carrying out crystallization under the condition that the pH value is 3.0-5.0, has the advantages of less flow, simple process, low requirements for equipment, no pollution and low cost, and is easy to realize industrialization.

Description

technical field [0001] The invention relates to ferroelectric functional materials, in particular to o-phenanthroline malonate copper ferroelectric functional materials formed from o-phenanthroline, malonic acid and copper salts and a preparation method thereof. Background technique [0002] Ferroelectric materials refer to a class of materials with ferroelectric effect, which have spontaneous polarization when no external electric field is applied, and the direction of spontaneous polarization can be reversed or redirected by an external electric field. The characteristic of ferroelectric materials is that they not only have spontaneous polarization, but also within a certain temperature range, the magnitude and direction of the spontaneous polarization dipole moment can change with the magnitude and direction of the applied electric field. Due to the excellent properties of ferroelectric materials, such as ferroelectricity, piezoelectricity, pyroelectricity and nonlinear o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F1/08
Inventor 郑岳青金陵林建利朱红林许伟
Owner NINGBO UNIV
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