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An anti-counterfeiting material based on multiple response platinum luminescent color-changing complexes and its application

A technology of multiple responses and complexes, which is applied in the field of platinum complex luminescent and color-changing materials, can solve the problems of different reversibility of luminescent and color-changing materials, and achieve the effects of improving safety performance, good applicability, and convenient operation

Inactive Publication Date: 2018-02-16
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] (2) The reversibility of luminescence and color change is different

Method used

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  • An anti-counterfeiting material based on multiple response platinum luminescent color-changing complexes and its application
  • An anti-counterfeiting material based on multiple response platinum luminescent color-changing complexes and its application
  • An anti-counterfeiting material based on multiple response platinum luminescent color-changing complexes and its application

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Embodiment Construction

[0024] The specific implementation manners of the present invention will be further described below in conjunction with the accompanying drawings and technical solutions.

[0025] Step 1: Preparation of Pt(II) complex luminescence probe. Under the protection of nitrogen, [3,8-bis(trimethylsilylethynyl)-1,10-phenanthroline]platinum dichloride and 2-5 equivalents of m-chlorophenylacetylene, 0.001-0.10 equivalents of iodide Cuprous, stirred and reacted at room temperature for 1 day in a solution of diisopropylamine and dichloromethane (volume ratio 1:10). The product was separated by silica gel column, and the yield was 75-80%. Elemental analysis results: press C 38 h 32 Cl 2 N 2 PtSi 2 Calculated value (%) C54.41, H3.85, N3.34; found value (%) C54.65, H3.79, N3.32. 1 H NMR (CDCl 3 ):9.875(s,2H),8.571(s,2H),7.909(s,2H),7.546(s,2H),7.447(d,J(H,H)=7.6Hz,2H),7.159–7.230 (m,4H), 0.331(s,18H).

[0026] Step 2: Combine figure 1 and figure 2 Describe the absorption and emis...

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Abstract

The invention discloses a preparation method of an anti-counterfeiting material based on a multi-response platinum lighting-emitting and color-changing complex and application of the anti-counterfeiting material and belongs to the field of application of visible light lighting-emitting and color-changing materials. After the anti-counterfeiting material is treated with 1,2-dichloroethane and chloroform steam, the colors of two samples are yellow incapable of being distinguished with naked eyes, under irradiation of an ultraviolet lamp, the two samples give out yellow light, and the positions of emission peaks are the positions of 536 nm. When the two samples are heated at the temperature of 50 DEG C, the color of the sample treated with 1,2-dichloroethane is changed into orange red, the color of the emitted light is changed into bright red, and the position of the emission peak is the position of 693 nm. The color and emitted light of the sample treated with chloroform are not affected by heating. The anti-counterfeiting material based on the divalent platinum compound has dual responses to light and heat, the anti-counterfeiting safety performance is improved, the advantages of being low in cost, simple in process, high in reliability, convenient to operate and the like are achieved, and high application value is achieved in the field of anti-counterfeiting materials and technologies.

Description

technical field [0001] The invention belongs to the application field of visible light luminescent and color-changing materials, and in particular relates to a platinum complex luminescent and color-changing material that can be used in anti-counterfeiting. Background technique [0002] With the continuous progress of society, the development of industry and agriculture, various grades of commodities, while promoting the rapid development of the commodity economy, also meet the needs of people's constantly improving material living standards. However, nasty fakes have also entered the circulation market in a mixed manner. Counterfeit coins, counterfeit notes, counterfeit products under the cover of counterfeit trademarks and counterfeit certificates often make people deceived and suffer losses. Many countries in the world, especially some developed countries, have invested a lot of power to develop various high-tech anti-counterfeiting new materials and new technologies. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F15/00C09K11/06C09K9/02
CPCC07F15/0086C09K9/02C09K11/06C09K2211/1007C09K2211/1029C09K2211/185
Inventor 倪钧康佳佳盖旭巧
Owner DALIAN UNIV OF TECH
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