Photoreaction monomer and liquid crystal composition and liquid crystal panel thereof
A liquid crystal composition, photoreactive technology, applied in liquid crystal materials, optics, nonlinear optics, etc., can solve the problems of high monomer residue and image retention, achieve fast curing speed, and solve the effect of image retention.
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Embodiment 1
[0075] In this embodiment, a photoreactive monomer is provided, which is included in the liquid crystal composition. The absorption wavelength of the ultraviolet absorption spectrum of the photoreactive monomer is between 300 and 450 nm, represented by the following molecular formula I:
[0076]
[0077] Wherein: the A group is a hard core, including at least one benzene ring; the P group is the polymerizable group, selected from acrylate groups.
[0078] According to a preferred embodiment of the present invention, the present invention also provides a liquid crystal composition for making a liquid crystal panel, said liquid crystal composition comprising: at least one photoreactive monomer represented by formula I, at least one liquid crystal molecules; and, at least one diluent.
[0079] The liquid crystal molecules are vertically aligned liquid crystal molecules (VA-LC), and the diluent is a liquid crystal compound containing one or more alkenyl groups.
[0080] The li...
Embodiment 2
[0082] In this embodiment, a photoreactive monomer is provided, which is included in the liquid crystal composition and represented by the following molecular formula i:
[0083]
[0084] in,
[0085] R 1 and R 2 The groups are independently selected from -H or -CH 3 one of
[0086] x 1 、X 2 and x 3 are independently selected from -H or -F.
[0087] Further, when the R 1 , R 2 、X 1 、X 2 and x 3 When the groups are all -H, the synthesis route of the photoreactive monomer of this embodiment is as follows:
[0088] ;
[0089] The preparation method is as follows:
[0090] Mix 4 millimoles (mmol) of 4,4'-dihydroxybiphenyl (compound 1), 1 mmol of 4-hydroxybenzoic acid, 0.1 mmol of 4-dimethylaminopyridine (DMAP) and 50 ml of tetrahydrofuran (THF) after dehydration Put it into a 250 mL double-neck bottle, pump it with a vacuum deoxygenation and water removal device, and fill it with nitrogen three times, then connect nitrogen to the dropping tube to make the react...
Embodiment 3
[0093] In this embodiment, a photoreactive monomer is provided, which is included in the liquid crystal composition and represented by the following molecular formula ii:
[0094]
[0095] in,
[0096] R 1 and R 2 The groups are independently selected from -H or -CH 3 one of
[0097] x 1 、X 2 and x 3 are independently selected from -H or -F.
[0098] Further, when the R 1 , R 2 、X 1 、X 2 and x 3 When the groups are all -H, the synthesis route of the photoreactive monomer of this embodiment is as follows:
[0099] ;
[0100] The preparation method is as follows:
[0101] Put 0.045 mol of p-iodophenol (compound 1), 0.064 mol of tert-butyldimethylsilyl chloride and 0.204 mol of imidazole into a 250 ml double-necked bottle, inject 60 ml of THF after dehydration, and stir for six hours. After suction and filtration, most of the solvent was removed by a rotary concentrator, and then extracted with EA and saturated brine. The collected filtrate was dehydrated with...
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Abstract
Description
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