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Stress and luminescence enhanced force-induced luminescence composite film and preparation method

A luminescence enhancement and induced luminescence technology, applied in the field of force-induced luminescence complexes and preparation, can solve the problems of low luminescence intensity and low blue light detection sensitivity, and achieve the effects of improving luminescence intensity, improving mechanical intensity and changing luminescence color.

Active Publication Date: 2021-08-13
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the 1,2-dioxetane substituted by bis-adamantane has low luminescence intensity and low sensitivity to blue light detection by naked eyes and instruments.

Method used

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  • Stress and luminescence enhanced force-induced luminescence composite film and preparation method
  • Stress and luminescence enhanced force-induced luminescence composite film and preparation method
  • Stress and luminescence enhanced force-induced luminescence composite film and preparation method

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preparation example Construction

[0029] The preparation of TPE-CMP and TPA-CMP can be found in literature: Y.Wei, W.Chen, X.Zhao, S.Ding, S.Han, L.Chen, Polym.Chem.2016, 7, 3983-3988

[0030] The synthesis of linear polymethyl acrylate

[0031] Its main steps are as follows:

[0032] (1) Synthesis of active polymerization initiator: under inert gas protection conditions, ethylene glycol (1.24g, 0.02mol) was dissolved in 100mL of dry dichloromethane, triethylamine (5.8mL, 0.04mol) was added, and ice-water bath conditions Slowly add 2-bromopropionyl bromide (9.8mL, 0.08mol) at room temperature and react overnight at room temperature. The reaction solution is washed with 1M dilute hydrochloric acid solution, saturated aqueous sodium bicarbonate solution and water successively, dried with anhydrous magnesium sulfate, spin-dried, and silica gel The active polymerization initiator (2.78 g, yield 42%) was obtained as a colorless oily liquid by chromatography column separation.

[0033] (2) Single electron transfer...

Embodiment 1

[0044] A method for preparing a force-induced luminescence composite thin film with stress and luminescence enhancement, comprising the following steps:

[0045] (1) Add 2mL of N,N'-dimethylformamide to 120mg of conjugated microporous polymer TPE-CMP, use a ball mill, at a speed of 200rpm, ball mill in forward and reverse mode, stop for 3min every 25min, the total The working time is 20h; dilute to 25mL with tetrahydrofuran, and ultrasonicate for 60min under the condition of ultrasonic frequency of 20kHz and amplitude of 25%, to obtain conjugated microporous polymer TPE-CMP dispersion;

[0046] (2) Take 200mg of linear polymethyl acrylate, add the conjugated microporous polymer TPE-CMP dispersion obtained in step (1), heat and stir at 50°C for 12h, the linear polymethyl acrylate and conjugated microporous polymer TPE - The mass ratio of CMP is 100:1;

[0047] (3) Put all the products obtained in step (2) into the mold, add 8 mg of bis-adamantane-substituted 1,2-dioxetane, 16 ...

Embodiment 2

[0058] A method for preparing a force-induced luminescence composite thin film with stress and luminescence enhancement, comprising the following steps:

[0059] (1) Add 3mL of N,N'-dimethylformamide to 120mg of conjugated microporous polymer TPE-CMP, use a ball mill, at a speed of 300rpm, ball mill in forward and reverse mode alternately, stop for 5min every 40min, the total The working time is 24h; dilute to 40mL with tetrahydrofuran, and ultrasonicate for 30min under the conditions of ultrasonic frequency of 20kHz and amplitude of 30%, to obtain conjugated microporous polymer TPE-CMP dispersion;

[0060] (2) Take 200mg of linear polymethyl acrylate, add the conjugated microporous polymer TPE-CMP dispersion obtained in step (1), heat and stir at 56°C for 6h, the linear polymethyl acrylate and conjugated microporous polymer TPE - The mass ratio of CMP is 100:3;

[0061] (3) Put all the products obtained in step (2) into a mold, add 12 mg of bis-adamantane substituted 1,2-dio...

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Abstract

The invention discloses a force-induced luminescent composite film with enhanced stress and luminescence and a preparation method thereof. The preparation method is: adding N,N'-dimethylformamide to a conjugated microporous polymer TPE-CMP or a conjugated microporous polymer In the microporous polymer TPA-CMP, use a ball mill, ball mill, dilute with tetrahydrofuran, and ultrasonically obtain a dispersion; take linear polymethyl acrylate, add the dispersion, heat and stir; put it into a mold, add double adamantane substituted 1 , 2-dioxetane, azobisisobutyronitrile and methyl acrylate, stirred evenly, protected by an inert gas, reacted, and vacuum-dried at room temperature to obtain a force-induced luminescent composite film with enhanced stress and luminescence. The stress- and luminescent-enhanced force-induced luminescent composite thin film of the present invention has high mechanical strength, and the fluorescent conjugated microporous polymer acts as an energy transfer acceptor, effectively improving the luminous intensity during the fracture process of the composite thin film and changing the Glow color.

Description

technical field [0001] The invention belongs to the field of functional polymer composite materials, and in particular relates to a force-induced luminescent compound with enhanced stress and luminescence and a preparation method. Background technique [0002] Compared with traditional homogeneous polymer materials, filled polymer composites can combine the advantages of both the polymer matrix itself and the filled components to obtain functional materials with better performance. Commonly used filler particles for polymer elastomers include: silica, carbon black, montmorillonite, etc. The uniform dispersion of filler particles can effectively enhance the mechanical properties of polymers, and the obtained materials have excellent specific strength and specific modulus. In recent years, dispersed nanosheets or nanoparticles of organic porous materials have been prepared via a "top-down" approach, which can be efficiently compounded in polymeric elastomers. Compared with th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/18C08L51/00C08L51/08
CPCC08J5/18C08J2351/00C08J2451/08
Inventor 袁媛陈于蓝
Owner TIANJIN UNIV
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