Flexible ultra-hydrophobic up-conversion luminous thin film and preparation method

A luminescent film and super-hydrophobic technology, applied in the direction of textiles, papermaking, non-woven fabrics, etc., to achieve excellent reusability, reusable performance can be cut, and environmental friendliness

Active Publication Date: 2015-11-18
DALIAN NATIONALITIES UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, how to further improve the fluorescence detection sensitivity, reusability and processability of upconversion nanomaterials has always been a bottleneck in this field.

Method used

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  • Flexible ultra-hydrophobic up-conversion luminous thin film and preparation method
  • Flexible ultra-hydrophobic up-conversion luminous thin film and preparation method
  • Flexible ultra-hydrophobic up-conversion luminous thin film and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Add 0.48mmol yttrium chloride hexahydrate, 1.2mmol sodium chloride, 0.108mmol ytterbium chloride hexahydrate and 0.012mmol erbium chloride hexahydrate into 9ml ethylene glycol solution, stir magnetically for 30min to obtain solution A; g branched polyethyleneimine PEI and 0.11112 g ammonium fluoride were added to another 6 ml ethylene glycol solution and stirred for 60 min to obtain solution B. Then the prepared solution A and solution B were mixed and stirred for 10 minutes, then the mixed solution was transferred to a high-pressure reactor, sealed and placed in an electric oven for solvothermal reaction at a reaction temperature of 200°C for 120 minutes. After the reaction, the reaction kettle was naturally cooled to room temperature, opened, centrifuged to take out the white product, washed with absolute ethanol for 4 times, and finally the product was vacuum-dried at 60°C for 12 hours to obtain NaYF 4 : Yb 3+ , Er 3+ Upconverting Luminescent Nanoparticles.

[003...

Embodiment 2

[0034] Add 0.48mmol yttrium chloride hexahydrate, 1.2mmol sodium chloride, 0.12mmol ytterbium chloride hexahydrate and 0.0012mmol thulium chloride hexahydrate to 9ml ethylene glycol solution, and magnetically stir for 40min to obtain solution A; g branched polyethyleneimine PEI and 0.11112 g ammonium fluoride were added to another 6 ml ethylene glycol solution and stirred for 80 min to obtain solution B. Then the prepared solution A and solution B were mixed and stirred for 15 minutes, and then the mixed solution was transferred to a high-pressure reactor, sealed and placed in an electric oven for solvothermal reaction at a reaction temperature of 200° C. for 130 minutes. After the reaction, the reaction kettle was naturally cooled to room temperature, opened, centrifuged to take out the white product obtained, washed with absolute ethanol for 4 times, and finally the product was vacuum-dried at 60°C for 10 hours to obtain NaYF 4 : Yb 3+ , Tm 3+ Upconverting Luminescent Nano...

Embodiment 3

[0038] Add 0.48mmol yttrium chloride hexahydrate, 1.2mmol sodium chloride, 0.095mmol ytterbium chloride hexahydrate and 0.022mmol erbium chloride hexahydrate into 9ml of ethylene glycol solution, stir magnetically for 50min to obtain solution A; g branched polyethyleneimine PEI and 0.11112 g ammonium fluoride were added to another 6 ml ethylene glycol solution and stirred for 60 min to obtain solution B. Then the prepared solution A and solution B were mixed and stirred for 20 minutes, then the mixed solution was transferred to a high-pressure reactor, sealed and placed in an electric oven for solvothermal reaction at a reaction temperature of 205° C. for 140 minutes. After the reaction, the reaction kettle was naturally cooled to room temperature, opened, centrifuged to take out the white product obtained, washed with absolute ethanol for 4 times, and finally the product was vacuum-dried at 60°C for 8 hours to obtain NaYF 4 : Yb 3+ , Er 3+ Upconverting Luminescent Nanoparti...

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Abstract

The invention provides a flexible ultra-hydrophobic up-conversion luminous thin film. Rare earth ion doped NaYF<4> upper-conversion luminous nanoparticles are embedded into a polystyrene fiber matrix and then knitting is performed, so the rare earth ion doped NaYF<4> upper-conversion light-emitting nanoparticles/PS composite fiber mesh felt thin film is prepared. The preparation method mainly comprises steps of adding Yttrium chloride hexahydrate, sodium chloride, rare earth chloride, branching polyethylene imine and ammonium fluoride orderly and proportionally into glycol solution; then carrying out a hydro-thermal reaction so as to prepare white block-shaped sediment, i.e., the rare earth ion doped NaYF<4> upper-conversion light-emitting nanoparticles; scattering the rare earth ion doped NaYF<4> upper-conversion light-emitting nanoparticles in polystyrene sol prepared from N, N-dimethyl formamide solution; and then by use of static spinning technology, preparing the thin film. The thin film is a kind of highly sensitive cuttable water phase fluorescence detection material with high reusing performance, lower in cost and suitable for large-scale industrial production, and preparation technology is simple.

Description

technical field [0001] The invention relates to a flexible superhydrophobic up-conversion luminescent film capable of fluorescence detection and a preparation method. Background technique: [0002] With the rapid rise of nanoscience and nanotechnology, rare earth ion-doped upconversion luminescent materials with nanostructures have attracted widespread attention. This type of material not only has the inherent light energy conversion characteristics of ordinary up-conversion luminescent materials (that is, converting low-energy infrared light into high-energy visible light), but also has a large specific surface area, and the surface is doped with rare earth ions. Excellent nanostructure characteristics such as high concentration and easy dispersion in liquid solvents. Therefore, rare earth ion-doped up-conversion nano-luminescent materials have extremely broad application prospects in the field of liquid-phase fluorescence detection. Disperse up-conversion luminescent nan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/4382D04H1/728
Inventor 李佳苏宋春蕾刘奎朝张振翼董斌
Owner DALIAN NATIONALITIES UNIVERSITY
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