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Process for preparing conductive polymer periodic microstructure

A conductive polymer and periodic technology, applied in the field of conductive polymers, can solve the problems of high device requirements and inability to form a periodic structure of conductive polymers at one time

Inactive Publication Date: 2005-08-17
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Prior art (Vandyke LS, Brumlik CJ, Martin CR, Yu ZG Collins GJ, UV laser ablation of electronically conductive polymers, Synth.Met.52 (3) (1992) 299-304.) adopts ultraviolet laser beam focused irradiation On the surface of polypyrrole and polyaniline film, a conductive polymer microstructure is prepared on the surface of the film by laser ablation. However, since this method uses ultraviolet light as the light source, it has high requirements for each device in the optical path; Formation of Periodic Structures of Conductive Polymers

Method used

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  • Process for preparing conductive polymer periodic microstructure
  • Process for preparing conductive polymer periodic microstructure

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Embodiment 1

[0021] ① Prepare a conductive polymer film on the surface of the substrate; take 0.2ml aniline and 360mg silver nitrate and dissolve them in DMF (N,N'-dimethylformamide), then mix the above two solutions and immerse a glass substrate material in the solution Inside, the glass substrate was taken out after three hours, and a thin film was formed on its surface, which was rinsed with ethanol and dried under a nitrogen atmosphere to form a thin film glass sample, which was placed on the sample stage.

[0022] ②Formation of femtosecond laser coherent field: select a femtosecond pulse with a pulse width of 120fs, a wavelength of 800nm, a pulse repetition rate of 6Hz, and a pulse energy of 70μJ. The femtosecond pulse beam is divided into two beams by a beam splitter, and the beam diameter is 6mm, the angle between the two beams is 40°, use two focusing lenses with a focal length of 10cm to focus the two beams on the surface of the film, form a femtosecond laser coherent field, irradi...

Embodiment 2

[0026] Take 0.2ml of aniline and 360mg of silver nitrate and dissolve them in DMF (N,N'-dimethylformamide), then mix the above two solutions and immerse a glass matrix material into the solution, take out the glass matrix after three hours, and then A thin film was formed on the surface, which was rinsed with ethanol and dried under a nitrogen atmosphere. The above film was placed on the sample stage. Select a femtosecond pulse with a pulse width of 120fs, a wavelength of 800nm, a pulse repetition rate of 6Hz, and a pulse energy of 70μJ. The beam is divided into two beams by a beam splitter, the beam diameter is 6mm, and the angle between the two beams is 40°. The sample is controlled by a computer-operated three-dimensional mobile platform, and the structure of the experimental device is as follows: figure 1 . Use two focusing lenses with a focal length of 10cm to focus the two light beams on the surface of the film and control the movement of the sample stage, so that a se...

Embodiment 3

[0028] Set up an electrochemical three-electrode reaction system, working electrode: ITO conductive glass, reference electrode: silver / silver chloride, counter electrode: platinum sheet. The solution uses 0.5mol / L pyrrole + 1mol / L LiClO 4 Polypropylene carbonate solution. A conductive polymer film was prepared on the ITO conductive glass by using the potentiodynamic deposition method to cycle for one cycle in the range of 0-0.8V. The polypyrrole film was cleaned with polypropylene carbonate and blown dry with nitrogen. The above film was placed on the sample stage. Select a femtosecond pulse with a pulse width of 120fs, a wavelength of 800nm, a pulse repetition rate of 1Hz, and a pulse energy of 70μJ. The beam is divided into two beams by a beam splitter, the beam diameter is 6mm, and the angle between the two beams is 70°. The sample is controlled by a computer-operated three-dimensional mobile platform, and the structure of the experimental device is as follows: figure 1...

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Abstract

The process of preparing periodical conducting polymer micro structure on the surface of various substrate with fs laser interference field includes the following steps: 1) splitting one fs laser beam into two laser beams focused separately with two lenses and intersected at the focus to realize time and space interference; 2) preparing conducting polymer film conventionally on the surface of the substrate; 3) controlling the output energy density of the laser to make the energy density in the interference points higher than that to melt while lower than the damage threshold of the substrate; and 4) acting the laser interference field onto the conducting polymer film and controlling the laser acted area on the film to form serial points with periodical micro structure of the conducting polymer. Thus formed micro structure has resolution up to submicron or even nanometer size and is expected to be applied in microelectronics and sensor.

Description

technical field [0001] The invention relates to conductive polymers, in particular to a method for preparing periodic microstructures of conductive polymers induced by femtosecond lasers. Background technique [0002] As the subject of the "2000 Nobel Prize in Chemistry", conductive polymers are a class of polymers whose conductivity is between semiconductors and metals, and whose performance is even comparable to that of metals. They are known as "Synthetic Metals". good name. It has unique electronic, electrochemical and optical properties, so it has important applications in energy, information storage, optoelectronic devices, sensors, and military stealth technology. When conductive polymers are used in electronic devices, optoelectronic devices, and displays, in addition to requiring them to reversibly switch between conductive and insulating states, there is also a high requirement for their switching speed, which reduces the structure of conductive polymers. Size is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L65/00C08L79/02
Inventor 赵崇军赵全忠曲士良邱建荣陈庆希朱从善
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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