Optical aligning material for liquid crystal alignment membrane
A light alignment and alignment film technology, applied in liquid crystal materials, optics, nonlinear optics, etc., can solve problems such as poor display quality, no processing performance, and difficult materials
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0029] Photoalignment materials with the following repeating unit structures were synthesized:
[0030] 10 g (0.10 mol) of maleic anhydride and 10.1 g (0.09 mol) of aminophenol were added to 100 ml of toluene and stirred at room temperature for 2 hours to prepare an amic acid type intermediate. The resulting solution was added to 100ml of acetic anhydride, and at 95 ° C with 0.41g (0.005mol) sodium acetate (CH 3 COONa) was dehydrated for 4 hours to obtain 4-acetoxyphenylmaleimide with a yield of 50%.
[0031] Then at 65°C in acetone, using 0.35g AIBN (2,2'-azobisisobutyronitrile) as a polymerization initiator, 10g (0.043mol) of the above-prepared 4-acetoxyphenylmaleyl The imine was radically polymerized for 4 hours to form the polymer described below.
[0032] Deprotection of the resulting polymer with 5 g of p-toluenesulfonic acid (p-TsOH) in a mixture of 1 liter of methanol and acetone at 80 °C for 5 hours gave a polymer with the following structure in 85% yield . ...
Embodiment 2
[0037] Photoalignment materials with the following repeating unit structures were synthesized:
[0038] The main chain of the above polymer was synthesized in the same manner as described in Example 1. That is, 10 g (0.043 mol) of 4-acetoxyphenylmaleimide prepared in the same manner as described in Example 1, 6.97 g (0.043 mol) of acetoxystyrene and as a polymerization initiator 0.35g of AIBN was added to acetone and radically polymerized at 65°C for 4 hours to form the polymer backbone shown below.
[0039] The resulting polymer was deprotected with 5 g of p-toluenesulfonic acid (p-TsOH) in a mixture of 1 liter of methanol and acetone at 80 °C for 5 hours to obtain a polymer backbone with the following structure in a yield of 85%.
[0040] The reactive groups for the side chains were synthesized as described below. First, 1 g (0.006 mol) of 4-carboxybenzaldehyde and 0.79 g (0.006 mol) of thionyl chloride (SOCl 3 ) was reacted for 40 minutes, and then reacted with 0....
Embodiment 3
[0043] Photoalignment materials with the following repeating unit structures were synthesized:
[0044] Add 10g (0.06mol) of exo-3,6-epoxy-1,2,3,6-tetrahydrophthalic anhydride and 6.73g (0.06mol) of aminophenol into 100ml of toluene, and After stirring for 2 hours, an amic acid intermediate was obtained. In 100ml of acetic anhydride at 95°C, dehydrate the resulting solution with 2.46g (0.03mol) of sodium acetate for 4 hours to give 4-acetoxyphenyl-3,6-epoxy-1,2,3,6- Tetrahydrophthalimide, 50% yield.
[0045] Then, 10 g (0.043 mol) of 4-acetoxyphenyl maleimide prepared in the same manner as described in Example 1, 7.8 g (0.03 mol) of 4-acetoxyphenyl-3,6 -Epoxy-1,2,3,6-tetrahydrophthalimide, 2.75g (0.02mol) of acetoxystyrene and 0.71g of AIBN as a polymerization initiator were added to acetone at 65°C Under free radical polymerization for 4 hours, a terpolymer was formed as described below.
[0046] The resulting copolymer was deprotected in the same manner as describe...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More