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Fluorescent falsification-preventing gel with self-heating function, and preparation method and applications thereof

A gel and fluorescence technology, applied in the field of fluorescent anti-counterfeiting gel and its preparation, can solve the problem of not fully realizing colorlessness under sunlight and the like

Active Publication Date: 2019-09-27
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the material is not completely colorless under sunlight, invisible and anti-counterfeiting

Method used

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  • Fluorescent falsification-preventing gel with self-heating function, and preparation method and applications thereof
  • Fluorescent falsification-preventing gel with self-heating function, and preparation method and applications thereof
  • Fluorescent falsification-preventing gel with self-heating function, and preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Example 1: Preparation of blue light self-healing gel film

[0065] 21mg of trimesaldehyde (BTA) was added to the DMF solution of 0.5ml of TPP-4CHO, wherein the concentration of TPP-4CHO was 1.27×10 -5 M, mix the above mixed solution with 1g H at room temperature 2 N-PDMS-NH 2 Quickly mix well and pour it into a prefabricated 2mm×2mm×0.2mm polytetrafluoroethylene square dish. After standing for two days, heat it at 70°C for 5 hours to obtain colorless and transparent under sunlight, and emit under ultraviolet light excitation. Self-healing gel film with blue light.

Embodiment 2

[0066] Example 2: Preparation of green light self-healing gel film

[0067] 21 mg of trimesaldehyde (BTA) was added to the DMF solution of 0.5 ml of TPE-4CHO, wherein the concentration of TPE-4CHO was 2.5 × 10 -5 M, mix the above mixed solution with 1g H at room temperature 2 N-PDMS-NH 2 Quickly mix well and pour it into a prefabricated 2mm×2mm×0.2mm polytetrafluoroethylene square dish. After standing for two days, heat it at 70°C for 5 hours to obtain colorless and transparent under sunlight, and emit under ultraviolet light excitation. Self-healing gel film with green light.

Embodiment 3

[0068] Example 3: Preparation of red light self-healing gel film

[0069] 21mg of trimesaldehyde (BTA) was added to the DMF solution of 0.5ml of BT-TPE-4CHO, wherein the concentration of BT-TPE-4CHO was 5.1×10 -5 M, mix the above mixed solution with 1g H at room temperature 2 N-PDMS-NH 2 Quickly mix well and pour it into a prefabricated 2mm×2mm×0.2mm polytetrafluoroethylene square dish. After standing for two days, heat it at 70°C for 5 hours to obtain colorless and transparent under sunlight, and emit under ultraviolet light excitation. Self-healing gel film with red light.

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Abstract

The invention discloses a fluorescent falsification-preventing gel with self-heating function, and a preparation method thereof. The molecule structure segment of the fluorescent falsification-preventing gel with self-heating function is represented by formula I, wherein PDMS is used for representing polysiloxane chain segments, AIEgen is used for representing an aggregation induction luminescence unit with fluorescent function. The invention also discloses applications of the fluorescent falsification-preventing gel in the field of information safety false prevention, and self-healing process fluorescence visualization. The fluorescent falsification-preventing gel is colorless and transparent under daylight; under ultraviolet excitation, emitting of a plurality of colors including red, green, and blue can be realized; and the film of the fluorescent falsification-preventing gel is capable of displaying in-situ visual gel self heating dynamic process through fluorescent spectrum technology.

Description

technical field [0001] The invention relates to the field of anti-counterfeiting technology, in particular to a fluorescent anti-counterfeiting gel with self-healing properties applied in the fields of information and anti-counterfeiting, as well as its preparation method and application. Background technique [0002] Self-healing materials can independently repair physical damage and prolong service life, and are used in artificial electronic skin, sensors, energy devices, biomedicine, etc. In recent years, functional materials with self-healing properties have become the focus of scholars' research. The research mainly focuses on two aspects, one is to develop the types of self-healing materials, and the other is to expand the functions and applications of self-healing materials. [0003] Although various functionalized self-healing materials have been prepared, the mechanism of self-healing materials based on experimental methods is not enough. In the prior art, scanning ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/388C08G77/392C08J5/18C09K11/06C08L83/08
CPCC08G77/388C08G77/392C08J5/18C08J2383/08C09K11/06C09K2211/1425C09K2211/1458C09K2211/1466C09K2211/1483
Inventor 顾星桂孙江曼
Owner BEIJING UNIV OF CHEM TECH
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