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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 direction of color-changing fluorescent materials, luminescent materials, chemical instruments and methods, etc., to achieve the effect of simple synthesis and preparation process and good water dispersibility

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

AI Technical Summary

Problems solved by technology

For the two-color fluorescent switching system with partially overlapping emission spectra, the two-color fluorescence obviously cannot meet the current needs, and it is necessary to introduce another compound with photoswitching properties as an acceptor to realize the light-dark state of the fluorescence. Reversible regulation, the emergence of photoswitchable fluorescent polymer nanoparticles based on diarylethene multi-wavelength regulation provides an effective way for this

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

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Effect test

Embodiment 1

[0039] Example 1: The preparation of a multi-wavelength regulated optical switch polymer fluorescent nanoparticle, the specific steps are as follows:

[0040]0.5g of methyl methacrylate, 0.002g of green optical switch fluorescent dye SP-PDI, 0.010g of diarylethene compound DTE-BA with photochromic properties, 0.075g of n-hexadecane, and azobisisobutyronitrile 0.025g and 0.158g of trimethylolpropane trimethacrylate were mixed and stirred evenly, and then dispersed in 10mL of an aqueous solution of cetyltrimethylammonium chloride with a concentration of 0.005g / mL, and ultrasonically emulsified to form a stable and uniform The microemulsion was reacted at 75°C for 4 hours to obtain a multi-wavelength-regulated green photoswitchable fluorescent polymer nanoparticle.

Embodiment 2

[0041] Example 2: The preparation of a multi-wavelength regulated optical switch polymer fluorescent nanoparticle, the specific steps are as follows:

[0042] 0.5g of methyl methacrylate, 0.002g of green optical switch fluorescent dye SP-PDI, 0.010g of diarylethene compound DTE-BA with photochromic properties, 0.075g of n-hexadecane, and azobisisobutyronitrile 0.025g and 0.158g of trimethylolpropane trimethacrylate were mixed and stirred evenly, then dispersed in 10mL of aqueous solution of cetyltrimethylammonium chloride with a concentration of 0.01g / mL, and ultrasonically emulsified to form a stable and uniform The microemulsion was reacted at 75°C for 4 hours to obtain a multi-wavelength-regulated green photoswitchable fluorescent polymer nanoparticle.

Embodiment 3

[0043] Example 3: The preparation of a multi-wavelength regulated optical switch polymer fluorescent nanoparticle, the specific steps are as follows:

[0044] 0.5g of methyl methacrylate, 0.002g of green optical switch fluorescent dye SP-PDI, 0.010g of diarylethene compound DTE-BA with photochromic properties, 0.075g of n-hexadecane, and azobisisobutyronitrile 0.025g and 0.158g of trimethylolpropane trimethacrylate were mixed and stirred evenly, then dispersed in 10mL of cetyltrimethylammonium chloride aqueous solution with a concentration of 0.015g / mL, and ultrasonically emulsified to form a stable and uniform The microemulsion was reacted at 75°C for 4 hours to obtain a multi-wavelength-regulated green photoswitchable fluorescent polymer nanoparticle.

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Abstract

The invention discloses the preparation and application of multi-wavelength regulated optical switch fluorescent polymer nanoparticles. Utilizing the principle of fluorescence resonance energy transfer (FRET), methyl methacrylate (MMA) and green optical switch fluorescent dye (SP‑PDI ) and photochromic compound diarylethene (DTE‑BA) as the main raw materials, a multi-wavelength-tunable photoswitchable fluorescent polymer nanoparticle was prepared by miniemulsion polymerization. The nanoparticle has small particle size and good water dispersibility, and can exhibit fast and reversible fluorescence switching characteristics under the irradiation of two kinds of ultraviolet light and visible light. Compared with the existing optical switch fluorescent polymer nanoparticles, the optical switch fluorescent polymer nanoparticles obtained in the present invention have the advantages of multi-level optical switch capability, low input cost, simple synthesis route, etc., and are suitable for scale-up synthesis and actual production It has great application prospects in technical fields such as logic gates and display materials.

Description

technical field [0001] The invention belongs to the technical field of chemical material preparation and display materials, especially the preparation and application of multi-wavelength regulated optical switch materials. Preparation and application of reversible photoswitchable fluorescent polymer nanoparticles of aryl vinyl compound DTE-BA. Background technique [0002] Photoswitchable fluorescent polymer nanoparticles can adjust the color or light / dark state of fluorescence by introducing fluorescent chromophores or photoswitching compounds. The polymer nanoparticles with core-shell structure provide a hydrophobic environment for organic dye molecules, which is conducive to increasing its concentration in the aqueous phase to increase its fluorescence intensity in the aqueous phase system, and can also reduce its biological application. The toxicity that may be produced, and the particle size of the nanoparticles is small, the water dispersibility is good, and it has th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/14C08F222/14C08F222/24C09K11/06C09K9/02
CPCC08F220/14C09K9/02C09K11/06C09K2211/1491C08F222/103C08F222/24
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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