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Method for preparing conjugated polymer nano material

A technology of conjugated polymers and nanomaterials, applied in the field of nanomaterials and organic synthesis, can solve the problems of difficult to control the morphology and size of polymer nanomaterials, uncontrollable morphology and size of polymer nanomaterials, etc.

Inactive Publication Date: 2014-10-01
CAPITAL NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, usually at room temperature, the morphology and size of polymer nanomaterials assisted by surfactants are not controllable.
For example, PEDOT nanoparticles were prepared by traditional oil-water interfacial polymerization method (Yang, Y.; Jiang, Y.; Xu, J.; Yu, J., Conducting polymeric nanoparticles synthesized in reverse micelles and their gas sensitivity based on quartz crystal micro balance.Polymer2007,48(15),4459-4465.), but the shape and size of polymer nanomaterials obtained by this method are difficult to control

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  • Method for preparing conjugated polymer nano material

Examples

Experimental program
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Embodiment 1

[0034] Example 1. Hydrothermal synthesis of poly-3,4-ethylenedioxythiophene (PEDOT) nanoparticles

[0035] 0.71 g (2.04 mmol) SDBS, 10 mL water, 10 mL methanol, and 10 mL sulfuric acid (0.2 M) were mixed together and stirred to give a microemulsion. EDOT (50 μL, 0.47 mmol) monomer was added to the solution, ultrasonically dispersed for 10 minutes, stirred for 20 minutes, and then added with equimolar FeCl to EDOT monomer. 3 ·6H 2 O was dissolved in an aqueous solution of water and stirred for 2 hours. The mixed solution was transferred to a 50 mL hydrothermal kettle, and hydrothermally treated at 140° C. for 5 hours. After natural cooling, the nanoparticles were separated by centrifugation, washed three times with methanol, and dried. The PEDOT nanoparticles can be obtained with a particle size of 15-20 nm. These nanoparticles can be well dispersed in methanol.

[0036] figure 1 is the transmission electron microscope picture of the prepared PEDOT nanoparticles.

[0037...

Embodiment 2

[0042] Example 2. Hydrothermal synthesis of polypyridine (PPy) nanoparticles

[0043] 1.5 g (4.08 mmol) SDBS, 10 mL water were mixed together and stirred to obtain a microemulsion. Py (100 μL, 1.44 mmol) monomer was added to the solution, ultrasonically dispersed for 10 minutes, stirred for 20 minutes, and then added with equimolar FeCl to the pyrrole monomer. 3 ·6H 2 O was dissolved in an aqueous solution of water and stirred for 2 hours. The mixed solution was transferred to a 50 mL hydrothermal kettle, and hydrothermally treated at 140° C. for 5 hours. After natural cooling, the nanomaterials were separated by centrifugation, washed three times with ethanol, and dried. The PPy nanoparticles can be obtained with a particle size of 20-30 nm. These nanoparticles can be well dispersed in ethanol.

[0044] Figure 4 is the transmission electron microscope picture of the prepared PPy nanoparticles.

[0045] Figure 5 is the UV spectrum of the as-prepared PPy nanoparticles...

Embodiment 3

[0048] Example 3. Hydrothermal synthesis of polyaniline (PANI) nanoparticles

[0049]0.71 g (2.04 mmol) of SDS, 10 mL of water, 10 mL of methanol and 8 mL of sulfuric acid (0.2 M) were mixed together and stirred to obtain a microemulsion. Add ANI (50μL, 0.55mmol) monomer to this solution, ultrasonically disperse for 10 minutes, stir for 20 minutes, then add (NH 4 ) 2 S 2 O 8 Dissolve in water to form an aqueous solution and stir for 2 hours. The mixed solution was transferred to a 50 mL hydrothermal kettle, and hydrothermally treated at 140° C. for 5 hours. After natural cooling, the nanomaterials were separated by centrifugation, washed three times with methanol, and dried. The PANI nanoparticles can be obtained, and the particle diameter is 10-25nm. These nanoparticles can be well dispersed in methanol.

[0050] Image 6 is a transmission electron micrograph of the prepared PANI nanoparticles.

[0051] Depend on Image 6 It can be seen that the particle size of PAN...

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Abstract

The invention provides a method for preparing a conjugated polymer nano material. The method comprises the following steps: dispersing anionic surfactant into a solvent to from micro emulsion; in the presence of oxidant, performing polymerization reaction on a polymer monomer in the micro emulsion by using a hydrothermal process, thereby obtaining the conjugated polymer nano material, wherein the anionic surfactant is sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, sodium dodecyl sulfate and sulfo-sodium succinate dioctyl ester; the polymer monomer is 3,4-ethylenedioxythiophene, thiophene, pyrrole, phenylene vinylene, dopamine melanin and derivatives; the oxidant is FeCl3.6H2O, (NH4)2S2O8, copper acetate, H2O2 and AgNO3. The method adopts the anionic surfactant, the polymer monomer and the oxidant are locked in micelle of the anionic surfactant, and conjugated polymer nano particles which are controllable in form and size are stably synthesized through the hydrothermal process.

Description

technical field [0001] The invention belongs to the field of nanomaterials and the field of organic synthesis, and particularly relates to a preparation method of a conjugated polymer nanomaterial. Background technique [0002] Nanomaterials are extremely important to the future development of biology and materials. Breakthroughs in many new fields urgently need the support of nanomaterials and nanotechnology. There is also a great demand for technological improvement in traditional industries. The application of polymer nanomaterials involves various fields and has broad application prospects in the fields of mechanics, electronics, optics, magnetism, chemistry and biology. [0003] Conjugated polymer photothermal conversion materials have the advantages of easy adjustment of light absorption range, high absorption coefficient, low price, and good biocompatibility. They can convert laser light energy into heat energy and achieve local high temperature, which has received ex...

Claims

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Application Information

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IPC IPC(8): C08G61/12C08G73/06C08G73/02
Inventor 周晶李萝园
Owner CAPITAL NORMAL UNIVERSITY
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