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A kind of preparation method of stretchable fluorescent color-changing material

A technology of color-changing materials and fluorescence, which is applied in the field of fluorescent materials, can solve the problems of limited types of fluorescent color-changing materials, difficulty in fluorescent color adjustment, and needs to be further explored, and achieve the effects of harmlessness to human body and environment, simple preparation, and good reversibility

Active Publication Date: 2022-03-29
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In recent years, fluorescent color-changing functional materials have received more and more attention. However, it is currently difficult to achieve controllable adjustment of fluorescent color by external force, and the corresponding research in this field is not sufficient.
So far, the types of fluorescent color-changing materials are still limited, and their luminescent properties and synthesis methods still need to be further explored.

Method used

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  • A kind of preparation method of stretchable fluorescent color-changing material
  • A kind of preparation method of stretchable fluorescent color-changing material
  • A kind of preparation method of stretchable fluorescent color-changing material

Examples

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preparation example Construction

[0041] (1) Preparation of dihydrodibenzophenazine derivatives:

[0042] Synthesized from N9,N10-di(phenyl)phenanthrene-9,10-diamine as raw material to prepare dihydrodibenzophenazine derivatives, which have the structure shown in formula (I):

[0043]

[0044] In formula (I), R is -H or -CN(DPAC-CN).

[0045] In this embodiment, the structure represented by formula (I) is not limited, and R may also be other groups.

[0046] In this embodiment, R is -H (DPAC) or -CN (DPAC-CN), and the multiple fluorescence emission spectra of the dihydrodibenzophenazine (DPAC) derivatives, such as figure 1 shown.

[0047] (2) Synthesis of doped polymers based on stretchable fluorescent color-changing materials with the structure of formula (I):

[0048] Mix and dope the dihydrodibenzophenazine derivatives (0.1-5wt%) shown in the structure of formula (I) with polycaprolactone (PCL). In this embodiment, as a preferred solution, The dihydrodibenzophenazine derivatives shown in the structur...

Embodiment 2

[0054] (1) Preparation of dihydrodibenzophenazine derivatives:

[0055] Synthesized from N9,N10-di(phenyl)phenanthrene-9,10-diamine as raw material to prepare dihydrodibenzophenazine derivatives, which have the structure shown in formula (I):

[0056]

[0057] In formula (I), R is -H or -CN.

[0058] In this embodiment, the structure represented by formula (I) is not limited, and R may also be other groups.

[0059] In this embodiment, R is -H (DPAC) or -CN (DPAC-CN), and the multiple fluorescence emission spectra of the dihydrodibenzophenazine (DPAC) derivatives, such as figure 1 shown.

[0060] (2) Synthesis of doped polymers based on stretchable fluorescent color-changing materials with the structure of formula (I):

[0061] Mix and dope the dihydrodibenzophenazine derivatives shown in the structure of formula (I) with ethylene-vinyl acetate copolymer (EVA). In this embodiment, as a preferred solution, the structure of formula (I) The shown dihydrodibenzophenazine de...

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Abstract

The invention discloses a preparation method of a stretchable fluorescent color-changing material, which comprises: preparation of dihydrodibenzophenazine derivatives; and preparation of fluorescent color-changing doped polymer. In the preparation method of a stretchable fluorescent color-changing material provided by the present invention, the dihydrodibenzophenazine derivatives have unique vibration-induced luminescent properties, and multiple fluorescent emission changes can be realized without complex molecular design . The preparation of the dihydrodibenzophenazine derivatives is simple, the doping process with the polycaprolactone (PCL) and the ethylene-vinyl acetate copolymer (EVA) is simple, and the prepared fluorescent-emitting Polymer film with good reversibility. The stretchable fluorescent color-changing material prepared according to the method of the present invention can realize the fluorescent color-changing process from pink to blue-green through the stretching effect of external force, and can calibrate the stimulation of external force through different fluorescent emissions at the same time. The raw materials are simple and easy to obtain, and are harmless to human body and environment.

Description

technical field [0001] The invention belongs to the technical field of fluorescent materials, and in particular relates to a preparation method of a stretchable fluorescent color-changing material. Background technique [0002] "Vibration Induced Emission (VIE)" is a new mechanism of organic conjugated molecular luminescence, which exhibits unique luminescence properties among dihydrodibenzophenazine derivatives. Under the excitation of single-wavelength ultraviolet light, dihydrodibenzophenazine derivatives exhibit red and blue fluorescence in different ratios, and the emitted fluorescence wavelength can change with the viscosity and temperature of the environment. This fluorescence emission characteristic has been widely used in many fields of research, such as organic optoelectronic materials, ratiometric fluorescent probes and supramolecular gels. [0003] Stretched fluorescent color-changing materials are a new type of functional materials, whose fluorescence emission ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/04C08L23/08C08K5/3465C08J5/18C09K9/02C09K11/02C09K11/06C07D241/38
CPCC08J5/18C09K9/02C09K11/025C09K11/06C07D241/38C09K2211/1044C08J2367/04C08J2323/08C08K5/3465
Inventor 马骧顾凡李元豪江涛田禾
Owner EAST CHINA UNIV OF SCI & TECH
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