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Silver iodate thermochromic material collaboratively constructed on basis of ionic bonds and coordination bonds and preparation method of silver iodate thermochromic material

A technology of thermochromic materials and iodine silver salts, applied in the direction of color-changing fluorescent materials, chemical instruments and methods, organic chemistry, etc., can solve the problems of inconspicuous discoloration of thermochromic materials, achieve easy observation, reduce operation time, fast response effect

Active Publication Date: 2019-03-01
LULIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of synergistic construction iodine silver salt thermochromic material and its preparation method based on ionic bond and coordination bond, to solve the problem that the discoloration of halometalate thermochromic material is not obvious

Method used

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  • Silver iodate thermochromic material collaboratively constructed on basis of ionic bonds and coordination bonds and preparation method of silver iodate thermochromic material
  • Silver iodate thermochromic material collaboratively constructed on basis of ionic bonds and coordination bonds and preparation method of silver iodate thermochromic material
  • Silver iodate thermochromic material collaboratively constructed on basis of ionic bonds and coordination bonds and preparation method of silver iodate thermochromic material

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Effect test

Embodiment 1

[0034] 1,1′-methylene-bis(4,4′-bipyridine) dibromide (MBP·Br 2) (0.1mmol, 0.048g), a mass fraction of 45% HI (1.0mmol, 0.284g) solution and AgI (0.3mmol, 0.071g) were added to the 7ml DMF solution in turn, and 10 drops of water were added dropwise with a rubber dropper and Stir to obtain a deep red solution, place the volatile solvent at room temperature to obtain a deep red diamond-shaped flaky crystal, wash with ethanol for 2-3 times and dry to obtain [(MBP)(Ag 3 I 5 )] n . Yield: 70.1% (based on Ag). Elemental analysis: C 21 h 18 N 4 Ag 3 I 5 : C, 19.63; H, 1.41; N, 4.36. Found: C, 19.58; H, 1.50, N, 4.31.

Embodiment 2

[0036] 1,1'-methylene-bis(4,4-bipyridyl) dibromide (MBP·Br 2 ) (0.1mmol, 0.048g), mass fraction of 45% HI (1.0mmol, 0.284g) solution and AgI (0.3mmol, 0.071g), were sequentially added to 3ml DMF solution and dripped 5 drops of water with a rubber dropper to obtain Dark red solution, place volatile solvent at room temperature to obtain deep red diamond-shaped flaky crystals, wash with ethanol 2-3 times and dry to obtain [(MBP)(Ag 3 I 5 )] n . Yield: 43.2% (based on Ag).

Embodiment 3

[0038] 1,1'-methylene-bis(4,4-bipyridyl) dibromide (MBP·Br 2 ) (0.1mmol, 0.048g), a mass fraction of 45% HI (1.0mmol, 0.284g) solution and AgI (0.3mmol, 0.071g) were added to the 5ml DMF solution in turn, and 10 drops of water were added dropwise with a rubber dropper. Stir to obtain a deep red solution, place the volatile solvent at room temperature to obtain a deep red diamond-shaped flaky crystal, wash with ethanol for 2-3 times and dry to obtain [(MBP)(Ag 3 I 5 )] n . Yield: 55.5% (based on Ag).

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Abstract

The invention belongs to the technical field of inorganic-organic hybrid materials, and particularly discloses a silver iodate thermochromic material collaboratively constructed on basis of ionic bonds and coordination bonds and a preparation method of the silver iodate thermochromic material. 1,1-methylene-bis(4,4'-bipyridine) positive ions serve as a structure-directing agent and an electron acceptor, the electron-rich silver iodate serves as an electron donor, and the silver iodate thermochromic material based on the ionic bonds and the coordination bonds is synthesized through a room temperature solution volatilization method. The silver iodate thermochromic material is mainly used in the fields of display, sensing, anti-counterfeiting marking and the like, so that the problem that a metal halate thermochromic material is unobvious in color changing is solved.

Description

technical field [0001] The invention belongs to the technical field of inorganic-organic hybrid materials, and specifically discloses an iodine silver salt thermochromic material synergistically constructed based on ionic bonds and coordination bonds and a preparation method thereof. Background technique [0002] Thermochromic materials have received extensive attention due to their applications in temperature display materials, smart materials, chemical anti-counterfeiting and high-tech fields. At present, thermochromic materials are mainly divided into four categories: inorganic, organic, liquid crystal and inorganic-organic hybrid. Compared with the first three types of color-changing materials, inorganic-organic hybrid materials have both the thermal stability and high strength of inorganic compounds and the dual characteristics of easy modulation or processing of organic compounds, and can even produce some new properties through synergistic effects. Therefore, the des...

Claims

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Application Information

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IPC IPC(8): C09K9/02C07D213/127C07D213/22
CPCC07D213/127C07D213/22C09K9/02C09K2211/1029
Inventor 于探来郭艳梅武国兴王中慧
Owner LULIANG UNIV
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