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Irradiant polymer/nanometer sulfide composite material and its preparation

A technology of light-emitting polymers and composite materials, applied in the direction of light-emitting materials, chemical instruments and methods, etc., can solve the problems of high surface free energy, difficulty in stabilizing the system, large surface area, etc., and achieve controllable polymerization process, clear product structure, The effect of increased reactive functional groups

Inactive Publication Date: 2006-05-03
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the many surface defects, large surface area, and high surface free energy of the sulfide nanoparticles obtained by the above method, the system is difficult to stabilize, and its industrial application is limited.

Method used

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  • Irradiant polymer/nanometer sulfide composite material and its preparation
  • Irradiant polymer/nanometer sulfide composite material and its preparation
  • Irradiant polymer/nanometer sulfide composite material and its preparation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: Synthesis of poly-o-methyl-acrylamide-benzoic acid

[0024] (1) Synthesis of monomeric methyl-acrylamido-benzoic acid

[0025] 40ml-80ml tetrahydrofuran, 5.5g-11g anthranilic acid, stirred and dissolved in an ice-water bath, then added triethylamine with a molar ratio of 1.2:1 to anthranilic acid, stirred for half an hour, slowly added methacryloyl chloride ( The molar ratio to anthranilic acid is 1.2:1), react in an ice-water bath for 0.5h-1h, continue to react at room temperature for 3h-5h, stop the reaction, filter with suction, wash the filtrate with ether, and drop it into the washed solution while stirring Add hydrochloric acid to obtain a white powder, filter it with suction, and dry it in vacuum to obtain methyl-acrylamido-benzoic acid.

[0026] (2) Atom transfer radical polymerization of meth-acrylamido-benzoic acid

[0027] In meth-acrylamido-benzoic acid, sodium hydroxide, ligand 2,2'-bipyridyl molar ratio 50:50:3, add N,N'-dimethylformaldehyde w...

Embodiment 2

[0028] Example 2: Using poly-o-methyl-acrylamide-benzoic acid as a template to generate nano-ZnS in situ

[0029] Mass ratio is 1: 1-10: 1 poly-o-methyl-acrylamido-benzoic acid and zinc acetate, add deionized water (make the zinc ion concentration in the solution be about 9.2 × 10 -2 mol / l--9.2×10 -3 mol / l), stirred at room temperature for 48h-72h, filtered, washed with water and dried to obtain poly-o-methyl-acrylamide-benzoic acid-Zn. Poly-o-methyl-acrylamide-benzoic acid-Zn is stirred with an aqueous solution of excess sodium sulfide for 3h-5h, filtered, washed with water and dried to obtain poly-o-methyl-acrylamide-benzoic acid-ZnS.

[0030] The fluorescence spectrum of the composite system after generating ZnS is shown in the attached figure 1 Shown: Under the excitation wavelength of 314nm, the composite system has emission peaks at 370nm and 425nm, which are respectively the emission peak of poly-o-methyl-acrylamide-benzoic acid and the self-activation peak of ZnS.

Embodiment 3

[0031] Example 3: In situ generation of nano-ZnS with poly-o-methyl-acrylamide-benzoic acid as a template

[0032] Mass ratio is 1: 1-10: 1 poly-o-methyl-acrylamido-benzoic acid and zinc acetate, add deionized water (make the zinc ion concentration in the solution be about 9.2 × 10 -2 mol / l--9.2×10 -3 mol / l), stirred at room temperature for 48h-72h, filtered, washed with water and dried to obtain poly-o-methyl-acrylamide-benzoic acid-Zn. Poly-o-methyl-acrylamide-benzoic acid-Zn and excess thioacetamide aqueous solution were stirred and reacted at 80°C for 60-100 minutes, filtered, washed with water and dried to obtain poly-o-methyl-acrylamide-benzene Formic acid-ZnS.

[0033] The fluorescence spectrum of the composite system after generating ZnS is shown in the attached figure 2 Shown: Under the excitation wavelength of 314nm, the composite system has emission peaks at 370nm and 425nm, which are respectively the emission peak of poly-o-methyl-acrylamide-benzoic acid and th...

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Abstract

The invention discloses a composite material of polyortho-methyl - acryloylamino -benzoic acid as luminopolymer and nano metal sulfide. The preparation method comprises: with polyortho-methyl - acryloylamino -benzoic acid as template and metal salt and sulfide as mateials, original generating nano metal oxide in liquid, and obtaining the said material. Wherein, the metal salt is selected one or more from zinc acetate, manganese chloride, copper acetate, nickel sulfate, cadmium nitrate, and silver acetate; the sulfide is selected from sodium sulfide or thioacetamide. This invention has potential application value.

Description

technical field [0001] The invention relates to a luminescent functional composite material composed of a polymer and a nanometer metal sulfide and a preparation method thereof, in particular to a luminescent poly-o-methyl-acrylamide-benzoic acid modified with a nanometer sulfide. Background technique [0002] Since the advent of nanomaterials in the 20th century, people have done a lot of research in this field and achieved many results. In the past 10 years, II-VI semiconductor nanomaterials have become a research hotspot. Based on the quantum size effect and surface effect of semiconductor nanoparticles, semiconductor nanoparticles are used in luminescent materials, nonlinear optical materials, light-sensitive sensor materials, photocatalytic materials, etc. With broad application prospects, sulfide semiconductor nanomaterials have become a class of materials widely studied due to their special photoelectric properties, such as cadmium sulfide an...

Claims

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Application Information

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IPC IPC(8): C09K11/06C08F2/44C08F120/58C08K3/06
Inventor 路建美丁春花徐庆锋王丽华夏雪伟
Owner SUZHOU UNIV
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