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Preparation method of poly-p-phenylene ethylene derivative micro-nano fiber

A poly-p-phenylene vinylene and micro-nano fiber technology, which is applied in fiber processing, fiber chemical characteristics, spinning solution preparation, etc., can solve the problems of polymer residue, complicated device, affecting the performance of optoelectronic devices, etc., and achieve strong polarization. , the effect of good mechanical properties

Inactive Publication Date: 2013-11-06
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The former device is more complicated and requires follow-up processing measures
The latter method has the problem of other polymer residues, which affects the performance of optoelectronic devices

Method used

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  • Preparation method of poly-p-phenylene ethylene derivative micro-nano fiber
  • Preparation method of poly-p-phenylene ethylene derivative micro-nano fiber
  • Preparation method of poly-p-phenylene ethylene derivative micro-nano fiber

Examples

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Effect test

Embodiment 1

[0027] MDMO-PPV with a weight average molecular weight of 200,000 was dissolved in 5 mL of chloroform to form a solution with a concentration of 10 wt%, and a uniform solution was obtained by stirring and ultrasonic dispersion. Then 2 mL of tert-butanol was gradually added under vigorous stirring. After completion, continue to stir for a period of time and perform ultrasonic dispersion to obtain a uniform electrospinning solution. Micro-nanofilaments were produced by electrospinning.

Embodiment 2

[0029] BEH-PPV with a weight average molecular weight of 400,000 was dissolved in 5 mL of dichloroethane to prepare a solution with a concentration of 6 wt%, and a uniform solution was obtained by stirring and ultrasonic dispersion. Afterwards, 1 mL of ethanol was gradually added under vigorous stirring. After completion, continue to stir for a period of time and perform ultrasonic dispersion to obtain a uniform electrospinning solution. Micro-nanofilaments were produced by electrospinning.

Embodiment 3

[0031] Dissolve poly[2,5-2(3′,7′-dimethyloctyloxy)-1,4-phenyleneethylene] with a weight average molecular weight of 300,000 in 5mL of dichloroethane to make a concentration of 8wt % solution, a homogeneous solution was obtained by stirring and ultrasonic dispersion. Then 1 mL of isopropanol was gradually added under vigorous stirring. After completion, continue to stir for a period of time and perform ultrasonic dispersion to obtain a uniform electrospinning solution. Micro-nanofilaments were produced by electrospinning.

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Abstract

The invention discloses a preparation method of poly-p-phenylene ethylene derivative micro-nano fiber. The preparation method is characterized by comprising the following steps of: firstly preparing poly-p-phenylene ethylene derivative and tetrahydrofuran, chlorobenzene, methylbenzene, chloroform or dichloroethane into solution according to the concentration of 0.5-20wt%; then preparing the solution and normal hexane, normal heptane or cyclohexane and the like into solution according to the volume ratio of 1:4-20:1; and then carrying out electrostatic spinning. In the poly-p-phenylene ethylene derivative micro-nano fiber prepared by the invention, the diameter is 19nm-2mum, the surface of the fiber is smooth, the length is centimeter-level and the mechanical property is good; by measurement of a fluorescence spectrum, a photoluminescence spectrum of the fiber is consistent to that of a spinning-coating film; and by a simple orientation device, an emission spectrum shows very strong polarization.

Description

technical field [0001] The invention relates to a method for preparing micro-nano fibers of poly-p-phenylene vinylene (PPV) derivatives by electrospinning. Background technique [0002] Conjugated polymers not only have good mechanical properties, but also combine the optoelectronic properties of semiconductors with the good processability of polymers, making them important functional materials. PPV derivatives are an important class of conjugated polymers. They have good solubility in solvents such as chloroform and tetrahydrofuran, and their applications in photodiodes and solar cells have attracted widespread attention. One-dimensional micro-nanostructures of conjugated polymers have unique properties, and their preparation methods have been paid much attention. For example, existing studies have shown that solar cells based on polythiophene nanowires can greatly improve device efficiency. [0003] Among the methods for preparing micro-nanostructures, the most widely us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/00D01D1/02D01F6/20
Inventor 陈义旺钟卫李璠湛烈周魏华
Owner NANCHANG UNIV
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