Fluorine-containing polyimide electro-optical material and preparation method thereof

A technology of hydroxyl fluorinated polyimide and electro-optic materials, applied in optics, nonlinear optics, instruments, etc., can solve the problems of poor solubility of polyimide, achieve excellent comprehensive performance, improve polarization efficiency, and high thermal stability sexual effect

Inactive Publication Date: 2011-10-19
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The use of aromatic polyimides with a higher glass transition temperature can effectively improve the orientation stability of frozen chromogenic molecules, but the high thermal stability and orientation stability of aromatic polyimides make many polyimides Imines are poorly soluble

Method used

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  • Fluorine-containing polyimide electro-optical material and preparation method thereof
  • Fluorine-containing polyimide electro-optical material and preparation method thereof
  • Fluorine-containing polyimide electro-optical material and preparation method thereof

Examples

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Effect test

example 1

[0026]

[0027] NLO is a Λ-shaped heterocyclic azo chromogenic molecule containing a thiazole ring, and its structural formula is:

[0028]

[0029] 4,4'-(hexafluoroisopropyl)-phthalic anhydride (3mmol, dianhydride monomer 6FDA) and 1,4-bis-(3,4-bisformyltrifluorophenoxy)tetrafluorobenzene Dianhydride (3mmol, dianhydride monomer 10FEDA) was dissolved in 8mL N,N-dimethylformamide solution, and added to 5,5'-(hexafluoroisopropyl)-bis-(2 -Aminophenol) (6mmol, diamine monomer 6FHP) in 8mL N,N-dimethylformamide solution, the solution was heated to room temperature and electromagnetically stirred in nitrogen for 24h to generate a polyamic acid solution, and 16mL was added to the flask Dried xylene solution, and then the polyamic acid solution was thermally cyclized at 160°C for 5 hours in a nitrogen atmosphere, while the water generated by the cyclization was taken out by the xylene azeotrope, and the reacted solution was dropped into 50mL of methanol In the mixed solution of H...

example 2

[0031]

[0032] NLO is a Λ-shaped heterocyclic azo chromogenic molecule containing a benzothiazole ring, and its structural formula is:

[0033]

[0034] 4,4'-(hexafluoroisopropyl)-phthalic anhydride (3mmol, dianhydride monomer 6FDA) and 1,4-bis-(3,4-bisformyltrifluorophenoxy)tetrafluorobenzene Dianhydride (3mmol, dianhydride monomer 10FEDA) was dissolved in 8mL N,N-dimethylformamide solution, and added to 5,5'-(hexafluoroisopropyl)-bis-(2- Aminophenol) (6mmol, 6FHP) in 8mL N,N-dimethylformamide solution, the solution was heated to room temperature and magnetically stirred in nitrogen for 24 hours to generate a polyamic acid solution, and 16mL of dry xylene was added to the flask solution, and then this polyamic acid solution was thermally cyclized at 160°C for 5h in a nitrogen environment, and the water produced by the cyclization was taken out by the xylene azeotrope, and the reacted solution was dropped into 50mL of methanol / water (1 : 1, V / V) and 10mL of 2N HCl in t...

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PUM

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Abstract

The invention relates to a fluorine-containing polyimide electro-optical material, which has high nonlinear optical response, high thermal stability, low optical transmission loss and good film forming property. Fluorine-containing polyimide is prepared first by dianhydride monomer 6FDA, dianhydride monomer 10FEDA and diamine monomer 6FHP through condensation polymerization, and then lambda-shaped heterocyclic azo chromophore and hydroxyl-containing fluorinated polyimide are etherified to obtain the material. The general structural formula is shown as the accompanying drawing, wherein m and ndenote degree of polymerization, the m is within 1-1000 and the n is within 1-1000. NLO denotes the lambda-shaped heterocyclic azo chromophore and the general structural formula is shown as the accompanying drawing.

Description

technical field [0001] The invention relates to a fluorine-containing polyimide electro-optic material and a preparation method thereof, which belongs to the preparation category of polymer materials in integrated optical devices and can be applied to electro-optic modulation devices. Background technique [0002] Organic second-order nonlinear optical materials have broad application prospects in the field of integrated optics due to their advantages such as large nonlinear coefficient, large modulation rate, high damage threshold, low dielectric constant, molecular design, and easy processing into materials. Among the four types of polarized polymer systems: doped, side-chain, main-chain and cross-linked, the side-chain polarized polymer system has received extensive attention. However, the polarization relaxation of chromogenic molecules is The main problem that needs to be overcome in the side chain type polymer system is that increasing the glass transition temperature ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/10G02F1/061
Inventor 周钰明何曼戴佳王志强崔一平张彤
Owner SOUTHEAST UNIV
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