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A method for rapid preparation of multi-dimensional fluorescent nanoparticles and in situ quantitative characterization of their dynamic dispersion state

A fluorescent nanometer and dispersed state technology, applied in fluorescence/phosphorescence, material analysis through optical means, measurement devices, etc. Representative and other issues, to achieve the effect of fast test speed, reduce the difficulty of preparation, and enhance the uniformity of curing

Active Publication Date: 2021-12-21
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In summary, there are certain limitations in the method of characterizing the dispersion state of multidimensional fluorescent nanoparticles in composite materials: first, sample preparation is time-consuming, the quality of the sample depends on professional skills, and there is some damage to the sample during the test; The test window is in a small two-dimensional area, which is not universally representative; the third is that it is difficult to accurately distinguish the dispersion state of the multi-dimensional fluorescent nanoparticles in the composite material; the fourth is that it is impossible to monitor the multi-dimensional Evolution of the Dispersion State of Fluorescent Nanoparticles

Method used

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  • A method for rapid preparation of multi-dimensional fluorescent nanoparticles and in situ quantitative characterization of their dynamic dispersion state

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Embodiment 1

[0023] Multi-dimensional nanoparticles selected SIO 2 Nanoparticles and carbon nanotubes, fluorescein having aggregated luminescent properties use tetracene-rhodamine B and tetrazoethylene-isothiocyanate fluorescene, a hydrauline-containing cationic cationic The initiator was used in [4- (2-hydroxy-3-butoxy-1-propoxy)] phenylbenzene-hexafluoronate iodonium salt. Water absolute ethanol, SiO under dark chamber 2 Nanoparticles, tetraenzene - rhodamine B and anhydrous ethanol, carbon nanotubes, tetrazoethylene-isocyanate fluorescein two groups of systems, according to the mass fraction of 100: 0.2: 0.01, respectively, ultrasonic stirring. The ultrasonic power is 80 kW, the stirring speed is 400 r / min, and the time is 1 h. After mixing, the precursor solution was poured into the non-transparent tetrafluoro-reactor, which was placed in a closed microwave reactor with a tipfluoro-stirring device, and a consecutive microwave radiation was continuously transmitted. Among them, the stirri...

Embodiment 2

[0027] Multi-dimensional nanoparticles selected SIO 2 Nanoparticles and oxide oxide, fluorescein having aggregated induced luminescent properties selected tetracene-rhodamine B and tetrazoethylene-7-amino-4-methylxamin, containing long chain alkyl or alkoxy group The phosphonium salt-based cationic photoinitiator employs [4- (2-hydroxy-3-allyloxy-1-propoxy)] phenylphenylene iodononium-hexafluoroate iodonium salt. Water absolute ethanol, SiO under dark chamber 2 Nanoparticles, tetraenzene-Rodam, B and anhydrous ethanol, oxide oxide, tetrapel-7-amino-4-methyloxin two groups of systems, according to the mass parts of 100: 1: 0.05 Ultrasound and mix evenly. The ultrasonic power is 120 kW, the stirring speed is 800r / min, and the time is 1.5 h. After mixing, the precursor solution was poured into the non-transparent tetrafluoro-reactor, which was placed in a closed microwave reactor with a tipfluoro-stirring device, and a consecutive microwave radiation was continuously transmitted. A...

Embodiment 3

[0031]Multi-dimensional nanoparticles use carbon nanotubes and gossipide, fluorescein having aggregated induced luminescent properties, using tetrapel-isothiocyanate fluorescene and tetraenzide-7-amino-4-methylxamin, contain Long chain alkyl or alkoxy-based phosphonium salt-based cationic photoinitiator employ [4- (2-hydroxy-3-alkoxy-1-propoxy)] phenylphenylene iodonium-hexafluorophosphate iodonium salt . Under dark chamber conditions, anhydrous ethanol, carbon nanotubes, tetrazoethylene-isothiocyanate fluorescentin and anhydrous ethanol, oxide, tetrazoethylene-7-amino-4-methylxin-4-methyloxin , The ultrasonic stirring is evenly stirred according to the mass fraction ratio of 100: 0.5: 0.02. The ultrasonic power is 100 kW, the stirring speed is 600r / min, and the time is 2 h. After mixing, the precursor solution was poured into the non-transparent tetrafluoro-reactor, which was placed in a closed microwave reactor with a tipfluoro-stirring device, and a consecutive microwave radi...

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Abstract

The invention is a method for rapid preparation of multi-dimensional fluorescent nanoparticles and in-situ quantitative characterization of their dynamic dispersion state. Fluorescein with aggregation-induced luminescent properties was quickly grafted onto the surface of multidimensional nanoparticles by continuous microwave irradiation, and multidimensional fluorescent nanoparticles with high fluorescence intensity and fluorescence stability were prepared simply and efficiently in an environmentally friendly manner. Based on the principle of aggregation-induced luminescence and fluorescent tracer, combined with the fluorine krypton laser device and laser confocal scanning microscope to perform online UV curing of the resin mixture, the online in-situ monitoring of the multi-dimensional fluorescent nanoparticles mixed in the resin during the curing process is realized. On this basis, the fractal dimension theory is used to calculate the fractal coefficients of multi-dimensional fluorescent nanoparticles on-line automatically and efficiently. For controlling the optimal curing conditions, it is of great significance to study the structure-property relationship of nanocomposites and the fine preparation of high-performance composites.

Description

Technical field [0001] The present invention belongs to the field of composite, and more particularly to a method of rapid preparation of multi-dimensional fluorescent nanoparticles and its dynamic dispersion state in situ. Background technique [0002] Fluorescent nanoparticles are widely used in aerospace, biomedicine and materials. From a microscopic scale, the fluorescent nanoparticles can be divided into zero-dimensional, one-dimensional constitutive and two-dimensional configuration, which have unique performance and different applications, respectively. Today, most of the studies are multi-dimensional fluorescent nanoparticles. However, in some specific applications, there is a interaction and synergistic effect between the multi-dimensional fluorescent nanoparticles, thereby performance is more excellent in performance than a single dimensional fluorescent nanoparticle. The multi-dimensional fluorescent nanoparticles increase the performance of the composite material to a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/64
CPCG01N21/6402
Inventor 贾晓龙孟柳罗锦涛马文丽还献华杨小平
Owner BEIJING UNIV OF CHEM TECH
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