Compound with vertical alignment, liquid crystal display panel and preparation method thereof
A liquid crystal display panel and compound technology, applied in chemical instruments and methods, organic chemistry, liquid crystal materials, etc., can solve the problems of cumbersome alignment layer manufacturing process, unsatisfactory performance, unenvironmental protection, etc., achieve ideal alignment effect, reduce production costs, The effect of improving product yield
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[0078] In the third aspect, the embodiment of the present application provides a method for preparing a liquid crystal display panel, which is used to prepare the liquid crystal display panel described in the second aspect, such as Figure 5 As shown, it specifically includes the following steps:
[0079]S1. Provide a first substrate and a second substrate, and inject a liquid crystal material between the first substrate and the second substrate.
[0080] In one embodiment of the present application, the first substrate is a TFT substrate, and the second substrate is a CF substrate. The TFT substrate and the CF substrate can be prepared by conventional technical means in the field, and details will not be repeated here.
[0081] Calculated by mass percentage, the liquid crystal material contains 0.1%-5% of the compound with vertical alignment according to any one of the first aspect. The injection method of the liquid crystal material can adopt conventional technical means in...
Embodiment 1
[0088] Embodiment 1: the preparation method of compound (I)
[0089] 1.1, preparation is used for the raw material of synthetic compound (I)
[0090] Compound a is one of the raw materials for the synthesis of compound (I), and compound a has a structure as represented by structural formula (1.1):
[0091]
[0092] The preparation method of compound a comprises the steps:
[0093] S1.1-1. Under the protective atmosphere of nitrogen, compound a1 and pentanediol were mixed according to the molar ratio of 1:1, and reacted at room temperature (25°C) for 72h, and the whole reaction process was carried out under ammonium chloride catalyst (adding The amount is 5% of the reactant to avoid aldehyde condensation reaction), and then the reactant is extracted with n-hexane to obtain compound a2.
[0094] Specifically, the reaction formula (1.2) of step S1.1-1 is as follows:
[0095]
[0096] Wherein, the preparation method of compound a1 comprises the following steps:
[0097] ...
Embodiment 2
[0125] Embodiment 2: the preparation method of compound (II)
[0126] 2.1, preparation is used for the raw material of synthetic compound (II)
[0127] Compound a' is one of the raw materials for the synthesis of compound (II), and compound a' has a structure as represented by structural formula (2.1):
[0128]
[0129] The preparation method of compound a' is implemented with reference to the preparation method of compound a in Example 1, only need to replace compound a1 with compound a1', and compound a1' has a structure represented by structural formula (2.2):
[0130]
[0131] In the above, the preparation method of compound a1' is carried out by referring to the preparation method of compound a1 in Example 1, only the compound a12 in it needs to be replaced with compound a12' (CAS number is 121219-12-3), and will not be repeated here.
[0132] 2.2. Preparation of compound (ΙΙ)
[0133] The preparation method of compound (II) is carried out with reference to the step...
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