Organic super-long room-temperature phosphorescent material, triple anti-counterfeiting organic ink and application

A room temperature phosphorescence and organic technology, applied in luminescent materials, inks, applications, etc., can solve the problems of constant production, small size, low safety level, etc., and achieve the effect of mild conditions and simple synthesis steps

Inactive Publication Date: 2020-09-04
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Objective: In order to overcome the shortcomings of the existing organic ultra-long room temperature phosphorescent materials in anti-counterfeiting applications: low security level, poor quality, sma

Method used

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  • Organic super-long room-temperature phosphorescent material, triple anti-counterfeiting organic ink and application
  • Organic super-long room-temperature phosphorescent material, triple anti-counterfeiting organic ink and application
  • Organic super-long room-temperature phosphorescent material, triple anti-counterfeiting organic ink and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: compound 1 preparation method

[0029] The synthetic method of compound 1 is as follows:

[0030]

[0031] The preparation method includes: the preparation method includes: under a nitrogen atmosphere, dissolve triphenylphosphine in toluene, then add 1,4-dibromobutane at a molar ratio of 1:1, heat at 110°C for 24h, and then reduce Pressure distillation and spin-drying, followed by column chromatography purification to obtain compound 1.

[0032] 1 HNMR(400MHz,DMSO,δ):7.91–7.82(m,3H),7.81–7.72(m,12H),3.61–3.54(m,2H),1.48–1.43(m,4H),0.87–0.84(t , J=7Hz, 2H).

Embodiment 2

[0033] Embodiment 2: compound 2 preparation method

[0034] The synthetic method of compound 2 is as follows:

[0035]

[0036] The preparation method includes: under a nitrogen atmosphere, dissolve triphenylphosphine in toluene, then add 1-chloro-4-bromobutane at a molar ratio of 1:1, heat at 110°C for 24 hours, then distill under reduced pressure and spin dry , and then purified by column chromatography to obtain compound 2.

[0037] 1 HNMR(400MHz,DMSO,δ):7.93–7.84(m,3H),7.83–7.74(m,12H),3.62–3.55(m,2H),1.52–1.46(m,4H),0.89–0.86(t , J=7Hz, 2H).

Embodiment 3

[0038] Embodiment 3: compound 3 preparation method

[0039] The synthetic method of compound 3 is as follows:

[0040]

[0041] The preparation method includes: under a nitrogen atmosphere, dissolve triphenylphosphine in toluene, then add 1,4-dichlorobutane at a molar ratio of 1:1, heat at 110°C for 24 hours, and then distill and spin dry under reduced pressure. Purify by column chromatography to obtain compound 3.

[0042] 1 HNMR(400MHz,DMSO,δ):7.92–7.83(m,3H),7.82–7.73(m,12H),3.61–3.54(m,2H),1.49–1.44(m,4H),0.88–0.85(t , J=7Hz, 2H).

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PUM

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Abstract

The invention discloses an organic super-long room-temperature phosphorescent material which is an organic phosphonium salt prepared by taking triphenylphosphine as a raw material, the compound can still continuously emit light for a period of time after an excitation light source is turned off after 300nm ultraviolet irradiation, and multiple digital encryption is realized by utilizing phosphonium salt crystals with the same light emitting color and different light emitting lives; secondly, an ethanol solution of the organic phosphorescent material is used as safe ink, so that multiple safe anti-counterfeiting effects are achieved.

Description

technical field [0001] The invention belongs to the technical field of organic photoelectric functional materials, and in particular relates to an organic ultra-long room temperature phosphorescent material and a triple anti-counterfeit organic ink. Background technique [0002] With the special role of encrypted anti-counterfeiting technology products gradually recognized by the society and widely used in various fields, especially in securities, currencies, seals, licenses, medicines, audio-visual products, food, cosmetics, software computer chips, etc. more fields. [0003] The current anti-counterfeiting measures are mainly fluorescent anti-counterfeiting, which has a relatively single function and a small amount of information. Organic long-lasting materials have a variety of life-related information channels, which are expected to innovate existing encryption anti-counterfeiting measures. [0004] Organic ultra-long room temperature phosphorescent materials have great...

Claims

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Application Information

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IPC IPC(8): C07F9/54C09D11/38C09D11/50C09K11/06
CPCC07F9/5442C09K11/06C09D11/50C09D11/38C09K2211/1014C09K2211/1007
Inventor 赵强马云佘鹏飞刘淑娟
Owner NANJING UNIV OF POSTS & TELECOMM
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