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Method for preparing nonlinear optical material of linkage nano carbon tubes of polythiophene methylene

A technology of polythiophene methylene and nonlinear optics, which is applied in the fields of optics, optical elements, dyed polymer organic compounds, etc., can solve the problems that cannot meet the application requirements of optical switching devices, do not form an intramolecular charge transport system, nonlinear optics, etc. Response to minor issues

Inactive Publication Date: 2005-10-26
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The existing organic polymer modified carbon nanotube nonlinear optical materials, because the selected polymer is a linear polymer or a conjugated polymer with a small nonlinear optical effect (such as PmPV, etc.), and there is no intramolecular charge transport system, so its nonlinear optical response is small, which cannot meet the application requirements of optical switching devices

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] 1. Synthesis of poly[(3-octylthiophene)-2,5-bis(4-aminobenzenemethane)] (POTAB): 3.88g (20mmol) 3-octylthiophene and 2.74g (20mmol) 4- Aminobenzaldehyde was dissolved in 50mL dioxane, and 2mL96% concentrated sulfuric acid was added dropwise as a catalyst. 2 Under gas protection conditions, heated to 85 ° C for 30 h. The resulting purple-red reaction solution was poured into 1000 mL of 1M ammonia water for precipitation to obtain a brown solid precipitate, which was filtered and washed with methanol to produce low molecular weight products, and then vacuum-dried at 70°C to constant weight. That is, the POTAB in the intrinsic state is obtained, and the yield is 80%;

[0013] 2. Synthesis of poly[(3-octylthiophene)-2,5-bis(4-aminobenzene)](POTABQ): Dissolve 1.0 g of POTAB in 30 mL of dioxane, then add tetrachlorobenzene quinone 0.25g, reacted at 80°C for 12h, settled the obtained brown reaction solution with methanol, dissolved the obtained solid product in tetrahydrofur...

Embodiment 2

[0017] 1. Synthesis of poly[(3-octylthiophene)-2,5-bis(4-aminobenzenemethane)] (POTAB): 3.88g (20mmol) 3-octylthiophene and 2.74g (20mmol) 4- Aminobenzaldehyde was dissolved in 50mL dioxane, and 2mL96% concentrated sulfuric acid was added dropwise as a catalyst. 2 Under gas protection conditions, heated to 85 ° C for 30 h. The resulting purple-red reaction solution was poured into 1000 mL of 1M ammonia water for precipitation to obtain a brown solid precipitate, which was filtered and washed with methanol for low molecular weight products, and then vacuum-dried at 70°C to constant weight. That is, the POTAB in the intrinsic state is obtained, and the yield is 80%;

[0018] 2. Poly[(3-octylthiophene)-2,5-bis(4-aminobenzene)](POTABQ): Dissolve 1.0 g of POTAB in 30 mL of dioxane, and then add chloranil 0.25g, reacted at 80°C for 12h, settled the obtained brown reaction solution with methanol, dissolved the obtained solid product in tetrahydrofuran, settled with methanol again, ...

Embodiment 3

[0022]1. Synthesis of poly[(3-octylthiophene)-2,5-bis(4-aminobenzenemethane)] (POTAB): 3.88g (20mmol) 3-octylthiophene and 2.74g (20mmol) 4- Aminobenzaldehyde was dissolved in 50mL dioxane, and 2mL96% concentrated sulfuric acid was added dropwise as a catalyst. 2 Under gas protection conditions, heated to 85 ° C for 30 h. The resulting purple-red reaction solution was poured into 1000 mL of 1M ammonia water for precipitation to obtain a brown solid precipitate, which was filtered and washed with methanol for low molecular weight products, and then vacuum-dried at 70°C to constant weight. That is, the POTAB in the intrinsic state is obtained, and the yield is 80%;

[0023] 2. Poly[(3-octylthiophene)-2,5-bis(4-aminobenzene)](POTABQ): Dissolve 1.0 g of POTAB in 30 mL of dioxane, and then add chloranil 0.25g, reacted at 80°C for 12h, settled the obtained brown reaction solution with methanol, dissolved the obtained solid product in tetrahydrofuran, settled with methanol again, f...

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Abstract

The present invention discloses a preparation method of polythiophene methylene bonded carbon nano tube non-linear optical material. Said method includes the following processes: dissolving 3-octyl thiophene and 4-aminobenzaldehyde in dioxane, adding concetnrated sulfuric acid catalyst, under the protection of nitrogen gas synthesizing poly[(3-octyl thiophene)-2,5-di(4-aminobenzane)]; dissolving said compound in dioxane, adding tetrachlorobenzoquinone to obtain poly[(3-octyl thiophene)-2,5-di(4-aminobenzene)], then dissolving said compound in dioxane, and adding multiwall or single-wall carbon nano tube containing acyl chloride group so as to obtain the polythiophene methylene bonded carbon nano tube.

Description

technical field [0001] The invention relates to a preparation method of a polythiophene methylene bonded carbon nanotube nonlinear optical material, which belongs to the synthesis technology of organic nonlinear optical materials. Background technique [0002] The unique large π-electron delocalized structure of carbon nanotubes has aroused people's interest in the study of their nonlinear optical properties. Xie (R. Xie, J. Jiang, Appl. Phys. Lett., 71(8), 1029-1031, 1997), Wan (X. Wan, J. Dong, D. Xing, Phys. Rev. B, 58 , 6756, 1998), Margulis (V.Margulis, T.Sizikova, PhysicaB, 245, 173-189, 1998) led the research group to use different methods to simulate the nonlinear optical properties of carbon nanotubes, and found that Its second-order supramolecular polarizability γ can reach 10 -29 esu. So far, the experimental research on the nonlinear optical properties of carbon nanotubes is still in its infancy. In 1999, the research group led by Ye Peixian, Institute of Phy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C3/10
Inventor 封伟易文辉
Owner TIANJIN UNIV
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