Flexible composite membrane with optical limiting characteristic and preparing method thereof

A composite film and optical limiting technology, applied in nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, can solve the problem of poor flexibility and optical limiting performance of solid-state fullerene optical limiting materials and devices and other problems, to achieve the effect of good light limiting characteristics and simple preparation method

Inactive Publication Date: 2007-01-03
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of poor flexibility and optical limiting performance of solid fullerene optical limiting materials and devices prepared in the prior art, thereby providing a fullerene fullerene with optical limiting properties that is beneficial to the realization of practical applications. vinyl flexible composite film

Method used

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  • Flexible composite membrane with optical limiting characteristic and preparing method thereof
  • Flexible composite membrane with optical limiting characteristic and preparing method thereof
  • Flexible composite membrane with optical limiting characteristic and preparing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038][60] fullerene pyrrolidine derivative A1: fullerene = [60] fullerene, R 1 = R 2 = R 3 = Hydrogen, R 4 = 4-phenol group, R 5 = methyl, add 5 mg of [60] fullerene pyrrolidine derivative A1, add 5 ml of methyl iodide to make a suspension, stir at room temperature for 2 days, remove excess methyl iodide; add 5 ml of toluene, stir, and dissolve the precipitated The solid precipitate was separated by centrifugation, and this step was repeated 4 times; the quaternary ammonium salt B1 of [60]fullerene pyrrolidine derivative A1 was obtained.

[0039] The quaternary ammonium salt B1 of the prepared fullerene pyrrolidine derivative was added to 5ml of methanol and 20mg of vacuum-dried Nafion film, stirred at room temperature for 0.2 hours, and the transmittance of the film was measured at 532nm in a UV-visible spectrophotometer to be 45 %, and then the film was taken out; the fullerene derivatives that might be adsorbed on the film surface were washed away with methanol; and dr...

Embodiment 2

[0041] [60] fullerene pyrrolidine derivative A2: fullerene = [60] fullerene, R 1 = R 3 = Hydrogen, R 2 = R 5 = methyl, R 4 =4-(3-octyloxy)phenyl, add 5 mg of [60]fullerene pyrrolidine derivative A2 to 5 ml of methyl iodide to make a suspension, stir at room temperature for 2 days, and remove excess methyl iodide; Then add 5ml of toluene, stir, centrifuge the precipitated solid precipitate, repeat this step 4 times; obtain quaternary ammonium salt B2 of [60] fullerene pyrrolidine derivative A2.

[0042] The quaternary ammonium salt B2 of the prepared fullerene pyrrolidine derivative was added to 5ml of ethanol, 20mg of vacuum-dried Nafion film, stirred at room temperature for 0.3 hours, and the transmittance of the film was measured at 532nm in an ultraviolet-visible spectrophotometer. %, and then the film was taken out; the fullerene derivatives that might be adsorbed on the film surface were washed away with ethanol; and dried to obtain the fullerene-Nafion nanocomposite ...

Embodiment 3

[0044] [70] fullerene pyrrolidine derivative A3: fullerene = [70] fullerene, R 1 = R 2 = R 3 = Hydrogen, R 4 = 4-phenol group, R 5 =Methyl, add 5ml of methyl iodide to [70]fullerene pyrrolidine derivative A3 5mg, add 5ml of methyl iodide to make a suspension, stir at room temperature for 2 days, remove excess methyl iodide; then add 5ml of toluene, stir, and precipitate The solid precipitate was centrifuged, and this step was repeated 4 times; the quaternary ammonium salt B3 of [70]fullerene pyrrolidine derivative A3 was obtained.

[0045] With the prepared quaternary ammonium salt B3 of fullerene pyrrolidine derivatives, add 2.5ml methanol and 2.5ml ethanol, 20mg vacuum-dried Nafion film, stir at room temperature for 2 hours, and measure the film density at 532nm in a UV-visible spectrophotometer. The transmittance was 55%, and then the membrane was taken out; the fullerene derivatives that might be adsorbed on the surface of the membrane were washed away with ethanol; an...

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Abstract

A flexible compound film with light-clipping characteristics is composed of a polymer film as carrier and the quaternary ammonium salt of fullerence pyrrolidine derivative, which is embedded in said carrier. It is prepared through mixing the fullerene pyrrolidine derivative, excessive halohydrocarbon or trifluoroacetic acid, methanol or alcohol or chloroform and said polymer film, and stirring. Its advantages are simple preparing process, and high flexibility and resistance to high temp and corrosion.

Description

technical field [0001] The invention relates to a flexible composite film with optical limiting properties and a preparation method thereof, in particular to a flexible composite film composed of a carrier polymer film and a quaternary ammonium salt of a fullerene pyrrolidine derivative embedded therein. Membranes and methods for their preparation. technical background [0002] As an important means of modern high-tech warfare, laser technology is widely used in the military field. Among all kinds of laser weapons, low-energy laser interference and blinding weapons have been researched and applied in Western countries since the 1980s. The targets of such weapons are mainly human eyes and photoelectric devices. With the development of such weapons, the research on corresponding laser protection materials and devices has attracted great attention from many countries. As one of the important materials for laser protection, the research on optical limiting materials and device...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/06C08L101/04
CPCB82Y30/00
Inventor 李俊新郭志新张璞柳东芳朱道本
Owner INST OF CHEM CHINESE ACAD OF SCI
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