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Preparation and application of optically switchable fluorescent polymer nanoparticles with multi-wavelength regulation

A fluorescent polymer and nanoparticle technology, applied in the field of chemical materials, achieves the effects of good water dispersibility, simple synthesis and preparation process

Active Publication Date: 2021-04-13
HUNAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these are all applications of information encryption based on small diarylethene molecules. As we all know, small molecules have many limitations in practical applications.

Method used

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  • Preparation and application of optically switchable fluorescent polymer nanoparticles with multi-wavelength regulation
  • Preparation and application of optically switchable fluorescent polymer nanoparticles with multi-wavelength regulation
  • Preparation and application of optically switchable fluorescent polymer nanoparticles with multi-wavelength regulation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Example 1: The preparation of a multi-wavelength regulated optical switch polymer fluorescent nanoparticle, the specific steps are as follows:

[0049] 0.5 g of methyl methacrylate, 0.0016 g of green optical switch fluorescent dye SP-PDI-DA, 0.010 g of diarylethene compound DTE-BA with photochromic properties, 0.075 g of n-hexadecane, and azo 0.025 g of diisobutyronitrile and 0.158 g of trimethylolpropane trimethacrylate were mixed and stirred evenly, then dispersed in 10 mL of cetyltrimethylammonium chloride aqueous solution with a concentration of 0.01 g / mL, and ultrasonically emulsified To form a stable and uniform miniemulsion, react at 75° C. for 4 hours to obtain a multi-wavelength-regulated green photoswitchable fluorescent polymer nanoparticle PDI-SP-DTE.

Embodiment 2

[0050] Example 2: The preparation of a multi-wavelength regulated optical switch polymer fluorescent nanoparticle, the specific steps are as follows:

[0051] 0.5 g of methyl methacrylate, 0.0016 g of green optical switch fluorescent dye SP-PDI-DA, 0.010 g of diarylethene compound DTE-BA with photochromic properties, 0.075 g of n-hexadecane, and azobis 0.025 g of isobutyronitrile and 0.158 g of trimethylolpropane trimethacrylate were mixed and stirred evenly, then dispersed in 10 mL of cetyltrimethylammonium chloride aqueous solution with a concentration of 0.02 g / mL, and ultrasonically emulsified to A stable and uniform miniemulsion was formed, and a multi-wavelength regulated green photoswitchable fluorescent polymer nanoparticle PDI-SP-DTE was obtained after reacting at 75°C for 4 hours.

Embodiment 3

[0052] Example 3: The preparation of a multi-wavelength regulated optical switch polymer fluorescent nanoparticle, the specific steps are as follows:

[0053] 0.5 g of methyl methacrylate, 0.0016 g of green optical switch fluorescent dye SP-PDI-DA, 0.010 g of diarylethene compound DTE-BA with photochromic properties, 0.075 g of n-hexadecane, and azo 0.025 g of diisobutyronitrile and 0.158 g of trimethylolpropane trimethacrylate were mixed and stirred evenly, and then dispersed in 10 mL of cetyltrimethylammonium chloride aqueous solution with a concentration of 0.03 g / mL, and ultrasonically emulsified To form a stable and uniform miniemulsion, react at 75° C. for 4 hours to obtain a multi-wavelength-regulated green photoswitchable fluorescent polymer nanoparticle PDI-SP-DTE.

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Abstract

The invention discloses the preparation and application of multi-wavelength regulated optical switch fluorescent polymer nanoparticles. Using the principle of fluorescence resonance energy transfer (FRET), methyl methacrylate (MMA) and optical switch fluorescent dyes (SP‑PDI‑ DA) and photochromic compound diarylethene (DTE‑BA) as the main raw materials, a multi-wavelength-tunable photoswitchable fluorescent polymer nanoparticle was prepared by one-step miniemulsion polymerization. The nanoparticles can exhibit fast and reversible fluorescence switching characteristics under the irradiation of two kinds of ultraviolet light and visible light. Compared with the existing photoswitchable fluorescent polymer nanoparticles, the photoswitchable fluorescent polymer nanoparticles obtained in the present invention have the advantages of multi-level photoswitching ability, stable water dispersibility, small particle size, low cytotoxicity, and easy preparation, etc. , suitable for enlarged production and practical application, and has great application prospects in technical fields such as information encryption and display materials.

Description

technical field [0001] The invention belongs to the technical field of chemical materials, especially the preparation and application of multi-wavelength regulated optical switch materials, in particular, it relates to a diarylethene compound based on a green optical switch fluorescent dye SP-PDI-DA and having optical switch properties Preparation of DTE-BA's photoswitchable fluorescent polymer nanoparticles and its application in information encryption. Background technique [0002] Photoswitchable fluorescent polymer nanoparticles have potential applications in the fields of fluorescent reversible photoswitches, optical storage, and ultra-high resolution biological imaging. Generally speaking, the photoswitchable fluorescence function is realized by introducing photochromic compounds (such as azobenzene compounds, spiropyran compounds, diarylethene compounds, etc.) into nanoparticles. This core-shell The structured polymer nanoparticles provide a hydrophobic environment f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/14C08F222/14C08F220/36C08F222/24C09K11/06C09K9/02
CPCC08F220/14C09K9/02C09K11/06C09K2211/1491C08F222/103C08F220/36C08F222/24
Inventor 陈建余茂林王涵王宏张培盛张崇华
Owner HUNAN UNIV OF SCI & TECH
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