Anti-counterfeiting material based on multi-response platinum lighting-emitting and color-changing complex and application of anti-counterfeiting material

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 simple process

Inactive Publication Date: 2016-06-08
DALIAN UNIV OF TECH
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  • Abstract
  • Description
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Problems solved by technology

[0007] (2) The reversibility of lumin

Method used

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  • Anti-counterfeiting material based on multi-response platinum lighting-emitting and color-changing complex and application of anti-counterfeiting material
  • Anti-counterfeiting material based on multi-response platinum lighting-emitting and color-changing complex and application of anti-counterfeiting material
  • Anti-counterfeiting material based on multi-response platinum lighting-emitting and color-changing complex and application of anti-counterfeiting material

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Embodiment Construction

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

[0025] Step 1: Preparation of Pt(II) complex luminescent probe. Under nitrogen protection, [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 in a solution of diisopropylamine and dichloromethane (volume ratio 1:10) at room temperature for 1 day. The product is separated by silica gel column and the yield is 75-80%. Elemental analysis result: press C 38 H 32 Cl 2 N 2 PtSi 2 Calculated value (%) C54.41, H3.85, N3.34; measured value (%) C54.65, H3.79, N3.32. 1 HNMR(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 with figure 2 Explain the absorption and emission spectra of the complex in different stat...

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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 color-changing materials, and specifically relates to a platinum complex luminescent color-changing material that can be applied to anti-counterfeiting. Background technique [0002] With the continuous progress of society and the development of industry and agriculture, a wide variety of products of different grades have not only promoted the rapid development of the commodity economy, but also met the needs of people's continuous improvement of material living standards. However, annoying fakes have also entered the circulation market mixedly. Counterfeit coins, counterfeit tickets, 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 heavily in the development of various high-tech anti-counterfeiting new materials an...

Claims

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Application Information

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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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