Copper o-phenanthroline m-hydroxybenzoate ferroelectric functional material and preparation method thereof

A technology of porphyrin m-hydroxybenzoic acid and electrical function, which is applied in the direction of copper organic compounds, can solve the problems of limited research work, and achieve the effects of low raw material cost, simple and easy process, and high yield

Inactive Publication Date: 2015-09-30
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Judging from the existing research progress, the research, development and application of high-performance ferroelectric materials are mainly concentrated on inorganic compound ferroelectric materials, and the research work on metal-organic complex ferroelectric materials is relatively limited.

Method used

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  • Copper o-phenanthroline m-hydroxybenzoate ferroelectric functional material and preparation method thereof
  • Copper o-phenanthroline m-hydroxybenzoate ferroelectric functional material and preparation method thereof
  • Copper o-phenanthroline m-hydroxybenzoate ferroelectric functional material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Dissolve 1 mol of copper chloride in a methanol solution with a concentration of 50% by volume, stir until completely dissolved, and make a copper chloride solution with a concentration of 0.1 mol / L for use; dissolve 1 mol of m-hydroxybenzoic acid in 100% by volume Dissolve 1mol o-phenanthroline in methanol solution with a volume percentage concentration of 50% , stir until completely dissolved, and make a 0.1mol / L o-phenanthroline solution for use. Add the above-mentioned m-hydroxybenzoic acid solution dropwise to the copper chloride solution under stirring, and stir to obtain a light blue solution; then add the above-mentioned o-phenanthroline solution dropwise under stirring to obtain bright blue o-phenanthrole Copper solution of phenanthroline meta-hydroxybenzoate; with a concentration of 1mol / L, the pH value of the copper solution of phenanthroline meta-hydroxybenzoate was adjusted to 3.21. At this time, the solution was dark blue, 2.10~5.90, and left standing at r...

Embodiment 2

[0020] Substantially the same as Example 1, the only difference is that the concentration of copper chloride solution, m-hydroxybenzoic acid solution and o-phenanthroline solution is 0.3mol / L, and the pH value of o-phenanthroline m-hydroxybenzoate copper solution is 2.10.

Embodiment 3

[0022] Substantially the same as Example 1, the only difference is that the concentration of copper chloride solution, m-hydroxybenzoic acid solution and o-phenanthroline solution is 0.5mol / L, and the pH value of o-phenanthroline m-hydroxybenzoate copper solution is 5.90.

[0023] Adopt Rigaku R-Axis Rapid single crystal diffractometer to carry out single crystal X-ray diffraction to the crystal that above-mentioned embodiment obtains, obtain as follows figure 1 Structural diagram of copper o-phenanthroline m-hydroxybenzoate shown.

[0024] The 2θ angle range of Bruker D8Focus powder diffractometer is 5-50°, and the ferroelectric powder of copper o-phenanthroline m-hydroxybenzoate obtained in the above example is scanned at a scanning speed of 8° / min, and samples are collected at room temperature The powder diffraction pattern (PXRD), and compared with the single crystal simulation PXRD pattern, such as figure 2 shown.

[0025] The hysteresis loop diagram is tested by the ...

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Abstract

The invention discloses an o-phenanthroline m-hydroxybenzoic acid copper ferroelectric function material and a preparation method thereof. The molecular formula of the o-phenanthroline m-hydroxybenzoic acid copper ferroelectric function material is Cu2(C12H8N2)2Cl2(C7H5O3)2. The ferroelectric function material is dark blue powder with the purity being not less than 99% and has a C2v point group structure. The ferroelectric characteristic parameters are respectively as follows: the remanent polarization 2Pr equals to 0.08muC*cm<-2>, the coercive electric field 2Ec equals to 5.03kv*cm<-1>; and the saturated polarization Ps equals to 0.195muC*cm<-2>. The ferroelectric function material has good ferroelectric characteristics. According to the ferroelectric function material, m-hydroxybenzoic acid solution and copper chloride solution are stirred for reacting, and then o-phenanthroline solution is added to realize nucleation and growth of o-phenanthroline m-hydroxybenzoic acid copper. The o-phenanthroline m-hydroxybenzoic acid copper ferroelectric function material is simple and practicable in process, low in facility request, low in raw material cost, high in productivity, less in pollution and the like.

Description

technical field [0001] The invention relates to a ferroelectric functional material, in particular to a copper o-phenanthroline m-hydroxybenzoate ferroelectric functional material and a preparation method thereof. Background technique [0002] Ferroelectric functional materials (ferroelectrics) refer to a class of functional materials whose crystal structure has spontaneous polarization when no external electric field is applied, and the direction of spontaneous polarization can be reversed or reoriented by an external electric field. Its most basic characteristic is that it will have spontaneous polarization within a certain temperature range, and the polarization intensity can be reversed with the external electric field, so that an electric hysteresis loop appears. Ferroelectric materials have rich physical connotations. In addition to ferroelectricity, they also have piezoelectricity, dielectricity, pyroelectricity, acousto-optic effect, photoelectric effect, photorefrac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F1/08
Inventor 林存洁郑岳青朱红林许伟林建利
Owner NINGBO UNIV
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