Monomer, and method for using it to fabricate LCD faceplate
A monomer and substrate technology, applied in liquid crystal materials, chemical instruments and methods, optics, etc., can solve problems such as lattice defects, affecting the display quality of liquid crystal display panels, and different diffusion distances between reactive monomers and liquid crystal molecules.
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no. 1 example
[0063] The first synthesis example: a kind of embodiment in chemical formula [11]
[0064] (1-1) Synthesis of 4-hydroxy-4'-ethoxybiphenyl (4-hydroxy-4'-ethyloxybiphenyl), as shown in chemical formula [51]:
[0065]
[0066]First, the reaction bottle was filled with argon gas, and 8 mmol (mmol), 60% by weight sodium hydride and 200 ml of dry dimethoxyethane (dimethoxyethane, DME) were put into the reaction bottle. Next, when the reaction solution was cooled by ice cubes, 2 mmol of 4,4'-dihydroxybiphenyl (4,4'-dihydroxybiphenyl) was added to the reaction solution. Then, the reaction solution was heated to room temperature, and the reaction solution was continuously stirred for 2 hours. Next, the reaction solution was cooled to minus 60°C. Then, 1 mmol of bromoethane was gradually dropped into the reaction solution. Then, the reaction solution was heated to room temperature, and the reaction solution was continuously stirred until the next day. Then, the reaction solution ...
no. 2 example
[0070] The second synthesis example: a kind of embodiment in the chemical formula [17]
[0071] (2-1) Synthesis of 4-(2-hydroxyethoxy)-4'-ethoxybiphenyl (4-(2-hydroxyethyloxy)-4'-ethyloxybiphenyl), as shown in the chemical formula [53]:
[0072]
[0073] First, the reaction flask was filled with argon gas, and 4 mmol, 60% by weight of sodium hydride and 200 ml of dry dimethoxyethane were put into the reaction flask. Next, when the reaction solution was cooled by ice cubes, 1 mmol of 4-hydroxy-4'-ethyloxybiphenyl (4-hydroxy-4'-ethyloxybiphenyl) was added to the reaction solution. Then, the reaction solution was heated to room temperature, and the reaction solution was continuously stirred for 2 hours. Next, the reaction solution was cooled to minus 60°C. Then, 1.5 mmol of bromoethanol was gradually dropped into the reaction solution. Then, the reaction solution was heated to room temperature, and the reaction solution was continuously stirred until the next day. Then, th...
no. 3 example
[0077] The third synthesis example: a kind of embodiment in chemical formula [23]
[0078] (3-1) has the same steps as (2-1) to obtain 4-(2-hydroxyethoxy)-4'-ethoxybiphenyl, which will be omitted here.
[0079] (3-2) Synthetic monomer, as shown in chemical formula [55]:
[0080]
[0081] First, the reaction flask was filled with argon gas, and 4 mmol, 60% by weight of sodium hydride and 200 ml of dry dimethoxyethane were put into the reaction flask. Then, when the reaction solution was cooled by ice cubes, 1 mmol of 4-(2-hydroxyethoxy)-4'-ethoxybiphenyl was added to the reaction solution. Then, the reaction solution was heated to room temperature, and the reaction solution was continuously stirred for 2 hours. Next, the reaction solution was cooled to minus 60°C. Then, 1.5 mmol of 3-bromo-2-fluoroprop-1-ene (3-bromo-2-fluoroprop-1-ene) was gradually dropped into the reaction solution. Then, the reaction solution was heated to room temperature, and the reaction solution ...
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