CN109705883A - A kind of fluorine-containing blue-phase liquid crystal composite material of high stability and preparation method thereof - Google Patents
A kind of fluorine-containing blue-phase liquid crystal composite material of high stability and preparation method thereof Download PDFInfo
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Abstract
The invention discloses fluorine-containing blue-phase liquid crystal composite materials of a kind of high stability and preparation method thereof, belong to liquid crystal material technical field.The blue-phase liquid crystal composite material includes blue phase liquid crystal and additive, wherein the blue phase liquid crystal includes following component in parts by weight: 65-85 parts of fluorinated liquid crystal compound, 15-35 parts of chiral agent；The additive includes following component in parts by weight: 0.5-3 parts of doped polyacetylene, 0.2-1.5 parts of nano ceric oxide, 0.3-1.5 parts of diaryl iodonium salt.The present invention is using fluoric bis(diphenyl)acetylene liquid crystal and the fluorine-containing chiral agent of 3CCUO8 as blue phase liquid crystal parent, by the way that suitable additive containing the components such as doped polyacetylene and nano ceric oxide is added, Cole's constant, the thermal stability of blue-phase liquid crystal composite material can be obviously improved, and the driving voltage and electric light sluggishness of blue-phase liquid crystal composite material are reduced, to can solve existing blue phase liquid crystal material driving voltage and the sluggish high problem of electric light.
Description
Technical field
The present invention relates to liquid crystal material technical field, the fluorine-containing blue-phase liquid crystal composite material of specifically a kind of high stability and
Preparation method.
Background technique
Blue phase liquid crystal is a kind of material of double helix three-dimensional super-structure, is between isotropism state and cholesteric phase
A kind of special phase, has the characteristics that electric field response is fireballing, is the trend of the following liquid crystal display development.Compared to traditional liquid
Crystal display, not only electric field response speed is fast for the display of blue phase liquid crystal, can also not need colored filter and vision compensation
Film can reduce the production cost of display to a certain extent.
But that there are temperature ranges is relatively narrow for the blue phase of existing blue phase liquid crystal material, thermostabilization is poor, and there is also
Driving voltage is high, electric light stagnates the problems such as high and dielectric is low to each opposite sex, therefore is difficult to be promoted well.Although existing
Fluorine-containing blue phase liquid crystal can reduce the viscosity of blue phase liquid crystal material, and promote blue phase liquid crystal by the introducing of fluorine atom
Dielectric has that stability is poor, driving voltage is high and electric light is stagnated high to each opposite sex, therefore also needs to blue phase
Liquid crystal material makees further research.
Summary of the invention
A kind of the purpose of the present invention is to provide driving voltages low, the sluggish low high stability of electric light fluorine-containing blue phase liquid crystal
Composite material and preparation method, to solve the problems mentioned in the above background technology.
To achieve the above object, the invention provides the following technical scheme:
A kind of fluorine-containing blue-phase liquid crystal composite material of high stability, including blue phase liquid crystal and additive, wherein the indigo plant
Phase liquid crystal includes following component in parts by weight: 65-85 parts of fluorinated liquid crystal compound, 15-35 parts of chiral agent；Described adds
Adding agent includes following component in parts by weight: 0.5-3 parts of doped polyacetylene, 0.2-1.5 parts of nano ceric oxide, two virtues
0.3-1.5 parts of base salt compounded of iodine.
As the scheme that the present invention further walks, the additive includes following component in parts by weight: doping is poly-
1-2 parts of acetylene, 0.5-1 parts of nano ceric oxide, 0.5-1 parts of diaryl iodonium salt.
As the present invention, further scheme, the fluorinated liquid crystal compound are fluoric bis(diphenyl)acetylene liquid crystal.
As further scheme of the invention, the chemical structural formula of the fluoric bis(diphenyl)acetylene liquid crystal are as follows:
As the present invention, further scheme, the chiral agent are the fluorine-containing chiral agent of 3CCUO8, chemical structural formula
Are as follows:
As the present invention, further scheme, the doped polyacetylene are that I2 doping polyacetylene or bromine adulterate poly- second
Alkynes.
A kind of preparation method of the fluorine-containing blue-phase liquid crystal composite material of above-mentioned high stability, comprising the following steps:
(1) each component in additive is first subjected to ingredient, mixing by above-mentioned parts by weight, and adds dehydrated alcohol ultrasound
Wave is dispersed, and addition agent dispersing liquid is obtained；
(2) each component in blue phase liquid crystal is then subjected to ingredient, mixing by above-mentioned parts by weight, and above-mentioned additive is added
Dispersion liquid is heated, ultrasonic wave dispersion, obtains dispersed liquid crystal liquid, and dispersed liquid crystal liquid is finally carried out vacuum drying removal nothing
Fluorine-containing blue-phase liquid crystal composite material can be obtained in water-ethanol.
As the present invention, further scheme, the middle addition of the step (1) add the quality of agent dispersing liquid as blue phase liquid
The 1%-6% of crystalloid amount.
Compared with prior art, the beneficial effects of the present invention are:
Novel formula of the invention, using fluoric bis(diphenyl)acetylene liquid crystal and the fluorine-containing chiral agent of 3CCUO8 as blue phase liquid crystal mother
Body, it is suitable containing the additive through iodine or the components such as bromine doped polyacetylene and nano ceric oxide by being added, it can be significant
Promoted blue-phase liquid crystal composite material Cole's constant, thermal stability, and reduce blue-phase liquid crystal composite material driving voltage and
Electric light is sluggish, to the fast response time of electric field, also has the characteristics that viscosity is low, dielectric is to each anisotropic high, long service life, applies
Range is very wide.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
Embodiment 1
A kind of fluorine-containing blue-phase liquid crystal composite material of high stability, including blue phase liquid crystal and additive, the blue phase liquid
Crystalline substance includes following component in parts by weight: 85 parts of fluorinated liquid crystal compound, 15 parts of chiral agent；The additive includes
Component in parts by weight below: 0.5 part of doped polyacetylene, 0.2 part of nano ceric oxide, 0.3 part of diaryl iodonium salt.Its
In, the fluorinated liquid crystal compound is fluoric bis(diphenyl)acetylene liquid crystal, the chemical structure of fluoric bis(diphenyl)acetylene liquid crystal
Formula are as follows:
The chiral agent is the fluorine-containing chiral agent of 3CCUO8, chemical structural formula are as follows:
The doped polyacetylene is I2 doping polyacetylene；
A kind of preparation method of the fluorine-containing blue-phase liquid crystal composite material of above-mentioned high stability, comprising the following steps:
(1) each component in additive is first subjected to ingredient, mixing by above-mentioned parts by weight, and adds dehydrated alcohol ultrasound
Wave is dispersed, and addition agent dispersing liquid is obtained；
(2) each component in blue phase liquid crystal is then subjected to ingredient, mixing by above-mentioned parts by weight, and above-mentioned additive is added
Dispersion liquid is heated, ultrasonic wave dispersion, obtains dispersed liquid crystal liquid, and dispersed liquid crystal liquid is finally carried out vacuum drying removal nothing
Fluorine-containing blue-phase liquid crystal composite material can be obtained in water-ethanol.Wherein, the quality that addition agent dispersing liquid is added is blue phase liquid crystal quality
1%.
Embodiment 2
A kind of fluorine-containing blue-phase liquid crystal composite material of high stability, including blue phase liquid crystal and additive, the blue phase liquid
Crystalline substance includes following component in parts by weight: 65 parts of fluorinated liquid crystal compound, 35 parts of chiral agent；The additive includes
Component in parts by weight below: 3 parts of doped polyacetylene, 1.5 parts of nano ceric oxide, 1.5 parts of diaryl iodonium salt.Its
In, the fluorinated liquid crystal compound is fluoric bis(diphenyl)acetylene liquid crystal, the chemical structure of fluoric bis(diphenyl)acetylene liquid crystal
Formula are as follows:
The chiral agent is the fluorine-containing chiral agent of 3CCUO8, chemical structural formula are as follows:
The doped polyacetylene is bromine doped polyacetylene.
A kind of preparation method of the fluorine-containing blue-phase liquid crystal composite material of above-mentioned high stability, comprising the following steps:
(1) each component in additive is first subjected to ingredient, mixing by above-mentioned parts by weight, and adds dehydrated alcohol ultrasound
Wave is dispersed, and addition agent dispersing liquid is obtained；
(2) each component in blue phase liquid crystal is then subjected to ingredient, mixing by above-mentioned parts by weight, and above-mentioned additive is added
Dispersion liquid is heated, ultrasonic wave dispersion, obtains dispersed liquid crystal liquid, and dispersed liquid crystal liquid is finally carried out vacuum drying removal nothing
Fluorine-containing blue-phase liquid crystal composite material can be obtained in water-ethanol.Wherein, the quality that addition agent dispersing liquid is added is blue phase liquid crystal quality
6%.
Embodiment 3
A kind of fluorine-containing blue-phase liquid crystal composite material of high stability, including blue phase liquid crystal and additive, the blue phase liquid
Crystalline substance includes following component in parts by weight: 65 parts of fluorinated liquid crystal compound, 15 parts of chiral agent；The additive includes
Component in parts by weight below: 1 part of doped polyacetylene, 0.5 part of nano ceric oxide, 0.5 part of diaryl iodonium salt.Its
In, the fluorinated liquid crystal compound is fluoric bis(diphenyl)acetylene liquid crystal, the chemical structure of fluoric bis(diphenyl)acetylene liquid crystal
Formula are as follows:
The chiral agent is the fluorine-containing chiral agent of 3CCUO8, chemical structural formula are as follows:
The doped polyacetylene is I2 doping polyacetylene.
A kind of preparation method of the fluorine-containing blue-phase liquid crystal composite material of above-mentioned high stability, comprising the following steps:
(1) each component in additive is first subjected to ingredient, mixing by above-mentioned parts by weight, and adds dehydrated alcohol ultrasound
Wave is dispersed, and addition agent dispersing liquid is obtained；
(2) each component in blue phase liquid crystal is then subjected to ingredient, mixing by above-mentioned parts by weight, and above-mentioned additive is added
Dispersion liquid is heated, ultrasonic wave dispersion, obtains dispersed liquid crystal liquid, and dispersed liquid crystal liquid is finally carried out vacuum drying removal nothing
Fluorine-containing blue-phase liquid crystal composite material can be obtained in water-ethanol.Wherein, the quality that addition agent dispersing liquid is added is blue phase liquid crystal quality
1%.
Embodiment 4
A kind of fluorine-containing blue-phase liquid crystal composite material of high stability, including blue phase liquid crystal and additive, the blue phase liquid
Crystalline substance includes following component in parts by weight: 85 parts of fluorinated liquid crystal compound, 35 parts of chiral agent；The additive includes
Component in parts by weight below: 2 parts of doped polyacetylene, 1 part of nano ceric oxide, 1 part of diaryl iodonium salt.Wherein, institute
The fluorinated liquid crystal compound stated is fluoric bis(diphenyl)acetylene liquid crystal, the chemical structural formula of fluoric bis(diphenyl)acetylene liquid crystal are as follows:
The chiral agent is the fluorine-containing chiral agent of 3CCUO8, chemical structural formula are as follows:
The doped polyacetylene is bromine doped polyacetylene.
A kind of preparation method of the fluorine-containing blue-phase liquid crystal composite material of above-mentioned high stability, comprising the following steps:
(1) each component in additive is first subjected to ingredient, mixing by above-mentioned parts by weight, and adds dehydrated alcohol ultrasound
Wave is dispersed, and addition agent dispersing liquid is obtained；
(2) each component in blue phase liquid crystal is then subjected to ingredient, mixing by above-mentioned parts by weight, and above-mentioned additive is added
Dispersion liquid is heated, ultrasonic wave dispersion, obtains dispersed liquid crystal liquid, and dispersed liquid crystal liquid is finally carried out vacuum drying removal nothing
Fluorine-containing blue-phase liquid crystal composite material can be obtained in water-ethanol.Wherein, the quality that addition agent dispersing liquid is added is blue phase liquid crystal quality
6%.
Embodiment 5
A kind of fluorine-containing blue-phase liquid crystal composite material of high stability, including blue phase liquid crystal and additive, the blue phase liquid
Crystalline substance includes following component in parts by weight: 80 parts of fluorinated liquid crystal compound, 20 parts of chiral agent；The additive includes
Component in parts by weight below: 1.5 parts of doped polyacetylene, 0.6 part of nano ceric oxide, 0.9 part of diaryl iodonium salt.Its
In, the fluorinated liquid crystal compound is fluoric bis(diphenyl)acetylene liquid crystal, the chemical structure of fluoric bis(diphenyl)acetylene liquid crystal
Formula are as follows:
The chiral agent is the fluorine-containing chiral agent of 3CCUO8, chemical structural formula are as follows:
The doped polyacetylene is I2 doping polyacetylene.
A kind of preparation method of the fluorine-containing blue-phase liquid crystal composite material of above-mentioned high stability, comprising the following steps:
(1) each component in additive is first subjected to ingredient, mixing by above-mentioned parts by weight, and adds dehydrated alcohol ultrasound
Wave is dispersed, and addition agent dispersing liquid is obtained；
(2) each component in blue phase liquid crystal is then subjected to ingredient, mixing by above-mentioned parts by weight, and above-mentioned additive is added
Dispersion liquid is heated, ultrasonic wave dispersion, obtains dispersed liquid crystal liquid, and dispersed liquid crystal liquid is finally carried out vacuum drying removal nothing
Fluorine-containing blue-phase liquid crystal composite material can be obtained in water-ethanol.Wherein, the quality that addition agent dispersing liquid is added is blue phase liquid crystal quality
3%.
Embodiment 6
A kind of fluorine-containing blue-phase liquid crystal composite material of high stability, including blue phase liquid crystal and additive, the blue phase liquid
Crystalline substance includes following component in parts by weight: 82 parts of fluorinated liquid crystal compound, 18 parts of chiral agent；The additive includes
Component in parts by weight below: 1.5 parts of doped polyacetylene, 0.8 part of nano ceric oxide, 0.7 part of diaryl iodonium salt.Its
In, the fluorinated liquid crystal compound is fluoric bis(diphenyl)acetylene liquid crystal, the chemical structure of fluoric bis(diphenyl)acetylene liquid crystal
Formula are as follows:
The chiral agent is the fluorine-containing chiral agent of 3CCUO8, chemical structural formula are as follows:
The doped polyacetylene is I2 doping polyacetylene.
A kind of preparation method of the fluorine-containing blue-phase liquid crystal composite material of above-mentioned high stability, comprising the following steps:
(1) each component in additive is first subjected to ingredient, mixing by above-mentioned parts by weight, and adds dehydrated alcohol ultrasound
Wave is dispersed, and addition agent dispersing liquid is obtained；
(2) each component in blue phase liquid crystal is then subjected to ingredient, mixing by above-mentioned parts by weight, and above-mentioned additive is added
Dispersion liquid is heated, ultrasonic wave dispersion, obtains dispersed liquid crystal liquid, and dispersed liquid crystal liquid is finally carried out vacuum drying removal nothing
Fluorine-containing blue-phase liquid crystal composite material can be obtained in water-ethanol.Wherein, the quality that addition agent dispersing liquid is added is blue phase liquid crystal quality
3%.
Comparative example 1
Except not containing doped polyacetylene component, other components and its content and preparation method and 6 phase of embodiment in additive
Together.
Comparative example 2
Except not containing nano ceric oxide component, other components and its content and preparation method and embodiment 6 in additive
It is identical.
By the blue phase liquid crystal of blue-phase liquid crystal composite material and existing product made from above-described embodiment 1-6 and comparative example 1-2
Material carries out the property such as driving voltage, Cole's constant, electric light sluggishness, phase transition temperature (blue phase start temperature and blue phase terminate temperature)
The comparison of energy.Wherein, testing result such as the following table 1:
Table 1
Indigo plant made from technical solution it can be seen from the testing result of upper table 1 according to embodiment 1-6 provided by the invention
For phase liquid crystal composite material compared to the blue phase liquid crystal material of existing product, driving voltage reduces 23%-36%, and electric light sluggishness is bright
Aobvious decline, Cole's constant is significantly larger, and possesses broader blue phase there are temperature ranges, that is, has higher thermal stability.
It can be seen that the present invention from the test result of comparative example 1-2 and embodiment 6 to contain by being added into blue phase liquid crystal
The additive of the components such as doped polyacetylene and nano ceric oxide, the Cole that can be obviously improved blue-phase liquid crystal composite material are normal
Number, thermal stability, and reduce the driving voltage and electric light sluggishness of blue-phase liquid crystal composite material.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (8)
1. a kind of fluorine-containing blue-phase liquid crystal composite material of high stability, including blue phase liquid crystal and additive, which is characterized in that described
Blue phase liquid crystal include following component in parts by weight: 65-85 parts of fluorinated liquid crystal compound, 15-35 parts of chiral agent；It is described
Additive include following component in parts by weight: 0.5-3 parts of doped polyacetylene, 0.2-1.5 parts of nano ceric oxide,
0.3-1.5 parts of diaryl iodonium salt.
2. a kind of fluorine-containing blue-phase liquid crystal composite material of high stability according to claim 1, which is characterized in that described
Additive includes following component in parts by weight: 1-2 parts of doped polyacetylene, 0.5-1 parts of nano ceric oxide, Diaryl iodonium
0.5-1 parts of salt.
3. a kind of fluorine-containing blue-phase liquid crystal composite material of high stability according to claim 1, which is characterized in that described
Fluorinated liquid crystal compound is fluoric bis(diphenyl)acetylene liquid crystal.
4. a kind of fluorine-containing blue-phase liquid crystal composite material of high stability according to claim 3, which is characterized in that described
The chemical structural formula of fluoric bis(diphenyl)acetylene liquid crystal are as follows:
5. a kind of fluorine-containing blue-phase liquid crystal composite material of high stability according to claim 1, which is characterized in that described
Chiral agent is the fluorine-containing chiral agent of 3CCUO8, chemical structural formula are as follows:
6. a kind of fluorine-containing blue-phase liquid crystal composite material of high stability according to claim 1, which is characterized in that described
Doped polyacetylene is I2 doping polyacetylene or bromine doped polyacetylene.
7. a kind of a kind of preparation side of the fluorine-containing blue-phase liquid crystal composite material of high stability as claimed in any one of claims 1 to 6
Method, which comprises the following steps:
(1) first by each component in additive by above-mentioned parts by weight carry out ingredient, mixing, and add dehydrated alcohol ultrasonic wave into
Row dispersion obtains addition agent dispersing liquid；
(2) each component in blue phase liquid crystal is then subjected to ingredient, mixing by above-mentioned parts by weight, and above-mentioned additive dispersion is added
Liquid is heated, ultrasonic wave dispersion, obtains dispersed liquid crystal liquid, dispersed liquid crystal liquid is finally carried out vacuum drying and removes anhydrous second
Fluorine-containing blue-phase liquid crystal composite material can be obtained in alcohol.
8. a kind of preparation method of the fluorine-containing blue-phase liquid crystal composite material of high stability according to claim 7, feature
It is, the quality that addition agent dispersing liquid is added in the step (1) is the 1%-6% of blue phase liquid crystal quality.
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| CN112940458A (en) * | 2021-02-05 | 2021-06-11 | 桂林理工大学 | Low dielectric liquid crystal composite material and preparation method and application thereof |
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