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Non-hydrous 1,3-di(4-pyridyl) propane copper o-chloromandelate ferroelectric functional material and preparation method therefor

A ferroelectric functional material, the technology of o-chloromandelic acid, applied in the direction of copper organic compounds, etc., can solve problems such as limited research work, and achieve the effects of low raw material cost, simple and easy process, and low equipment requirements

Inactive Publication Date: 2016-02-10
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Non-hydrous 1,3-di(4-pyridyl) propane copper o-chloromandelate ferroelectric functional material and preparation method therefor
  • Non-hydrous 1,3-di(4-pyridyl) propane copper o-chloromandelate ferroelectric functional material and preparation method therefor
  • Non-hydrous 1,3-di(4-pyridyl) propane copper o-chloromandelate ferroelectric functional material and preparation method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Get 0.186g (1mmol) o-chloromandelic acid, 0.091g (0.5mmol) 1,3-two (4-pyridyl) propane, be dissolved in the mixed solvent of 5mL water and 5mL ethanol respectively, prepare o-chloromandelic acid, 1,3-bis(4-pyridyl)propane solution. Another 0.085g (0.5mmol) copper chloride dihydrate was weighed, and the solid copper chloride was added to the o-chloromandelic acid solution under stirring until it was completely dissolved and the solution was light blue. Continue to stir and add 1mL (1mol / L) sodium hydroxide dropwise, no obvious phenomenon. Then 1,3-bis(4-pyridyl)propane solution was added dropwise to the above solution to obtain a blue turbid state. Add 2mL (1mol / L) ammonia solution dropwise under stirring, the turbidity disappears, and the solution turns dark blue. The pH value of the solution was measured to be 8.94. After the dark blue clear solution stood at room temperature for several days, green blocky crystals precipitated from the solution. Grind the crystals...

Embodiment 2

[0020] It was basically the same as Example 1, except that the finally obtained dark blue clear solution was placed in an oil bath at 60° C. for 1.5 h, and then left to stand at room temperature. The obtained crystals are ground to pass through a 100-mesh sieve, and the purity is not lower than 99%.

Embodiment 3

[0022] It is basically the same as Example 1, except that the o-chloromandelic acid taken by weighing is 0.279g (1.5mmol).

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Abstract

The invention discloses a preparation method for a non-hydrous 1,3-di(4-pyridyl) propane copper o-chloromandelate ferroelectric functional material and powder and crystals thereof. The molecular formula of the ferroelectric functional material is [Cu(bpp)(C8H5O3Cl)]2n[bpp=1,3-di(4-pyridyl) propane]. The ferroelectric functional material is white powder which can be screen by a 100-mesh sieve, wherein the purity is not less than 99%; the ferroelectric functional material belongs to a monoclinic system, and has a P21 space group structure. The cell parameters of the crystals are as follows: a formula as shown in the description, alpha=90 degrees, beta=99.85(3) degrees, and gamma=90 degrees; the ferroelectric characteristic parameters of the material are respectively: 2Pr=0.089([mu]C / cm2), 2Ec=3.53(kV / cm), and Ps=0.197([mu]C / cm2). The preparation method disclosed by the invention has the advantages of being simple and feasible in process, low in requirement on equipment, low in cost of raw materials, high in yield and pollution-free and the like.

Description

technical field [0001] The invention relates to a ferroelectric functional material, in particular to a non-hydrated 1,3-bis(4-pyridyl)propane o-chloromandelate copper 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, photoelectr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F1/08
Inventor 林存洁郑岳青戚金丽朱红林许伟
Owner NINGBO UNIV