CN110358549A - A kind of blue-phase liquid crystal composite material - Google Patents
A kind of blue-phase liquid crystal composite material Download PDFInfo
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- CN110358549A CN110358549A CN201810253368.7A CN201810253368A CN110358549A CN 110358549 A CN110358549 A CN 110358549A CN 201810253368 A CN201810253368 A CN 201810253368A CN 110358549 A CN110358549 A CN 110358549A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 102
- 239000002131 composite material Substances 0.000 title claims abstract description 63
- 239000000178 monomer Substances 0.000 claims abstract description 23
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 13
- 239000002019 doping agent Substances 0.000 claims abstract description 11
- 238000002360 preparation method Methods 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 239000002904 solvent Substances 0.000 claims description 14
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 claims description 10
- 238000005286 illumination Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 5
- 238000012698 light-induced step-growth polymerization Methods 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 210000002858 crystal cell Anatomy 0.000 claims description 4
- 235000015511 Liquidambar orientalis Nutrition 0.000 claims description 3
- 239000004870 Styrax Substances 0.000 claims description 3
- 244000028419 Styrax benzoin Species 0.000 claims description 3
- 235000000126 Styrax benzoin Nutrition 0.000 claims description 3
- OTKCEEWUXHVZQI-UHFFFAOYSA-N 1,2-diphenylethanone Chemical compound C=1C=CC=CC=1C(=O)CC1=CC=CC=C1 OTKCEEWUXHVZQI-UHFFFAOYSA-N 0.000 claims description 2
- KMNCBSZOIQAUFX-UHFFFAOYSA-N 2-ethoxy-1,2-diphenylethanone Chemical compound C=1C=CC=CC=1C(OCC)C(=O)C1=CC=CC=C1 KMNCBSZOIQAUFX-UHFFFAOYSA-N 0.000 claims description 2
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 102220040233 rs79219465 Human genes 0.000 claims description 2
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 claims 1
- 210000004919 hair shaft Anatomy 0.000 claims 1
- 230000004044 response Effects 0.000 abstract description 2
- 229920000642 polymer Polymers 0.000 description 8
- 238000004090 dissolution Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000001878 scanning electron micrograph Methods 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000003999 initiator Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- -1 siloxanes Chemical class 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- LNTHITQWFMADLM-UHFFFAOYSA-N gallic acid Chemical compound OC(=O)C1=CC(O)=C(O)C(O)=C1 LNTHITQWFMADLM-UHFFFAOYSA-N 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- BQZJOQXSCSZQPS-UHFFFAOYSA-N 2-methoxy-1,2-diphenylethanone Chemical compound C=1C=CC=CC=1C(OC)C(=O)C1=CC=CC=C1 BQZJOQXSCSZQPS-UHFFFAOYSA-N 0.000 description 1
- 244000283207 Indigofera tinctoria Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- GMSCBRSQMRDRCD-UHFFFAOYSA-N dodecyl 2-methylprop-2-enoate Chemical compound CCCCCCCCCCCCOC(=O)C(C)=C GMSCBRSQMRDRCD-UHFFFAOYSA-N 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 229940074391 gallic acid Drugs 0.000 description 1
- 235000004515 gallic acid Nutrition 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic System
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/18—Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
- C07F7/1804—Compounds having Si-O-C linkages
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F130/00—Homopolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal
- C08F130/04—Homopolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing a metal
- C08F130/08—Homopolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing a metal containing silicon
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/44—Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/46—Polymerisation initiated by wave energy or particle radiation
- C08F2/48—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F222/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides, or nitriles thereof
- C08F222/10—Esters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F230/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal
- C08F230/04—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing a metal
- C08F230/08—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing a metal containing silicon
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
- C09K19/54—Additives having no specific mesophase characterised by their chemical composition
- C09K19/542—Macromolecular compounds
- C09K19/544—Macromolecular compounds as dispersing or encapsulating medium around the liquid crystal
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F222/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides, or nitriles thereof
- C08F222/10—Esters
- C08F222/1006—Esters of polyhydric alcohols or polyhydric phenols
- C08F222/102—Esters of polyhydric alcohols or polyhydric phenols of dialcohols, e.g. ethylene glycol di(meth)acrylate or 1,4-butanediol dimethacrylate
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
- C09K19/54—Additives having no specific mesophase characterised by their chemical composition
- C09K19/542—Macromolecular compounds
- C09K2019/546—Macromolecular compounds creating a polymeric network
Abstract
The present invention proposes a kind of blue-phase liquid crystal composite material, including liquid crystal host, chiral dopant, can photoinduction polymerization monomer and photoinitiator, it is described can photoinduction polymerization monomer in include KH, the general structure of KH are as follows:The present invention also proposes the preparation method of the blue-phase liquid crystal composite material and its liquid crystal device of composition.The blue-phase liquid crystal composite material of wider range provided by the invention, the composite material includes blue phase liquid crystal fast response time, without general advantages such as oriented layers, temperature range is larger simultaneously, including routine use temperature range, even higher than current routine use temperature range.
Description
Technical field
The invention belongs to optical material fields, and in particular to a kind of blue-phase liquid crystal composite material.
Background technique
Blue phase liquid crystal is a kind of special phase between liquid crystal nematic phase and isotropic phase, is Reinitzer 1888
What year found for the first time, since its color observed is blue, therefore blue phase liquid crystal of gaining the name.Due to the response of blue phase liquid crystal Asia millisecond
Time (than fast ten times of traditional nematic phase), without oriented layer, intrinsic wide viewing angle the features such as, making it probably becomes next-generation
The production of the material of liquid crystal display, especially large-screen display.Blue phase liquid crystal is the double-spiral structure of high distortion.According to blue
The structure of phase liquid crystal is different, can be classified as three classes: BP I, BP II and BP III, BP I are body-centered cubic structure, and BP II is simple
Cubic structure, BP III is close to isotropic phase.
Due to existing in blue phase liquid crystal to wrong line, and then cause blue phase liquid crystal temperature range narrow.And solve blue phase liquid crystal temperature range
Narrow key will be exactly filled to wrong line, with stable blue phase liquid crystal.By introducing polymer and combinations of low molecular weight liquid crystals
Compound can extend the temperature range of blue phase liquid crystal.Be added in blue phase liquid crystal it is a small amount of can photoinduction polymerization small molecule list
Body (~8wt%) carries out UV light-induced polymerization in proper temperature, so that it is in the polymeric web for forming crosslinking into wrong line
Network, therefore stable blue phase liquid crystal.The temperature of blue phase liquid crystal is successfully extended very wide range (> 60 DEG C) by above-mentioned system, wherein just
Property including room temperature, and Quick photoelectric conversion is retained.This opens the new road an of stable blue phase liquid crystal.
Although the advantages of there are many blue phase liquid crystals, there is also some problems and need to solve, such as: 1. it is up to tens of volts
Voltage is operated, the application of thin film transistor (TFT) is limited；2. using strip shaped electric poles to switch voltage, and then cause low relative aperture
And low transmission；3. black state caused by residual birefringence weakens, contrast decline；4. caused by chiral or polymer network late
Stagnant phenomenon, uniform gray scale are difficult to reach.
The key factor for hindering blue phase liquid crystal to be applied to life passes through the effort of forefathers, temperature just in temperature range and voltage
Degree section can be adapted for temperature locating for daily life now, but voltage but never reduces well.In order to
Voltage is reduced, there are mainly two types of modes: first is that finding the liquid crystal composite material of big Kerr coefficient；Second is that designing and producing novel electricity
Pole.Novel electrode is mainly projection electrode, generate electric field energy it is deep penetrate liquid crystal layer, thus voltage reduce.But
It is expensive since electrode design is relatively difficult, so finding new blue-phase liquid crystal composite material is particularly important.
Summary of the invention
For shortcoming existing for this field, the present invention propose it is a kind of it is novel can photoinduction polymer stabilizing indigo plant
Phase liquid crystal composite material.
It is another object of the present invention to propose the preparation method of the blue-phase liquid crystal composite material.
Third object of the present invention is to propose the application of the blue-phase liquid crystal composite material.
Above-mentioned purpose of the invention is achieved through the following technical solutions:
A kind of blue-phase liquid crystal composite material, including liquid crystal host, chiral dopant, can photoinduction polymerization monomer and light
Initiator,
Described can include KH, the general structure of KH in the monomer of photoinduction polymerization are as follows:
Wherein, R1For CH3Or H；
R2For OH or OCH3、OC2H5、OC3H7、OSi(OH)3、OSi(CH3)3、OSi(C2H5)3；
R3For OH or OCH3、OC2H5、OC3H7、OSi(OH)3、OSi(CH3)3、OSi(C2H5)3；
R4For OH or OCH3、OC2H5、OC3H7、OSi(OH)3、OSi(CH3)3、OSi(C2H5)3；
A indicates that the carbon atom number of alkyl, a are the integer of 2-8.
Wherein, the liquid crystal host is one of HTG135200-100, SLC7011, SCL1717, the chiral doping
Agent is one of R5011, R811, S811 or a variety of.
Wherein, it is described can photoinduction polymerization monomer further include one of RM257, C12A, C12M or a variety of, the light
Initiator is one of IRG184, benzyl phenyl ketone, styrax, benzoin methyl ether, benzoin ethyl ether or a variety of.
A preferred technical solution of the present invention is, can photoinduction polymerized monomer in the blue-phase liquid crystal composite material
Mass fraction is 0%~50%, and the mass fraction of chiral dopant is 1%~10%, the mass fraction of photoinitiator is 0~
5%, the mass fraction of liquid crystal host is 50%~90%.
It is highly preferred that in the blue-phase liquid crystal composite material, can photoinduction polymerized monomer mass fraction be 1%~
20%, the mass fraction of chiral dopant is 1%~6%, and the mass fraction of photoinitiator is 1~3%, the quality of liquid crystal host
Score is 75%~90%.
Wherein, in the blue-phase liquid crystal composite material, can photoinduction polymerized monomer by 1-10 mass parts KH and 0-10 matter
Measure part RM257 composition.
The preparation method of blue-phase liquid crystal composite material of the present invention, including following operation:
Each component of the blue-phase liquid crystal composite material is formulated to together, being added will be molten after solvent sufficiently dissolves
Agent volatilization is dry, is circulated into liquid crystal cell, is gradually decreased using cold and hot control temperature, utilize polarized light microscope observing composite material
Texture development, and UV light-induced polymerization is carried out in blue phase temperature range.
Above-mentioned solvent is organic solvent, such as acetone, chloroform or methanol, using dissolution mechanism well known in the art.
It is highly preferred that described cold and hot before illumination cooling rate be 0.2~0.5 DEG C/min, described cold and hot in illumination
Cooling rate is 1~3 DEG C/min afterwards.
Wherein, the ultraviolet ray intensity is 5~10mW/cm2, the induced polymerization time is 1-10min.
The liquid crystal device of blue-phase liquid crystal composite material composition of the present invention.
The blue-phase liquid crystal composite material of wider range provided by the invention, the composite material are responded comprising blue phase liquid crystal
Speed is fast, is not necessarily to the general advantages such as oriented layer, while temperature range is larger, including routine use temperature range, even higher than mesh
Preceding routine use temperature range.
Esters of acrylic acid described in formula of the invention containing siloxanes or the metering system containing siloxanes
Esters of gallic acid can photoinduction polymerized monomer, be as it is a kind of completely new can photoinduction polymerization monomer, can with another
Photoinduction polymerized monomer RM257 formed polymer network, thus fill blue phase liquid crystal to wrong line, make the temperature model of blue phase liquid crystal
It encloses and is extended, can be existed steadily in the long term at room temperature, and voltage is minimized, be blue-phase liquid crystal composite material
Diversification provides thinking.
Detailed description of the invention
Fig. 1 is the photoelectric property curve of 2 gained blue-phase liquid crystal composite material of embodiment.
Fig. 2 is the SEM image of polymer in 2 gained blue-phase liquid crystal composite material of embodiment.
Fig. 3 is the photoelectric property curve of 1 gained blue-phase liquid crystal composite material of comparative example.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.
Unless otherwise instructed, means used in the examples are techniques known in the art means.
The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention..
Liquid crystal host (HTG135200-100) used in the examples, chiral dopant (R5011), two classes can photoinductions
The monomer (RM257 and KH) and photoinitiator (IRG184) structure of polymerization are as follows:
The above material is commercially available.
Embodiment 1
The liquid crystal host HTG135200-100 (mass fraction 87%) of blue-phase liquid crystal composite material, chirality are mixed in the present invention
Miscellaneous dose of R5011 (mass fraction 5%), can photoinduction polymerized monomer RM257 (mass fraction 3%) and KH (mass fraction 3%), light
Initiator IRG1184 (mass fraction 2%) is successively mixed, and solvent is added and is dissolved.After completely dissolution, solvent is removed
It goes.In KH, R1For CH3, R2For OCH3, R3For OH, R4For OH, a=5.
Obtained blue-phase liquid crystal composite material is heated to isotropism, is circulated into electroded IPS liquid crystal cell, is utilized
Cold and hot temperature control, and UV light-induced polymerization is carried out within the scope of blue phase.In above method step, composite material isotropic
Temperature need prior confirmation.The clearing point temperature of the composite material of the present embodiment is 75.4 DEG C；Cold and hot cools down before illumination
Speed be 0.3 DEG C/min, described cold and hot after illumination cooling rate be 2 DEG C/min.Ultraviolet ray intensity is 8mW/cm2, wavelength
For 365nm, Shi Changwei 5min.
Obtained blue-phase liquid crystal composite material cools down to test its minimum temperature.
Due to equipment limit, lowest temperature can only drop to subzero 30 DEG C, still be able to maintain blue phase at this temperature.Maximum temperaturerise arrives
80 DEG C, it is still able to maintain blue phase at this temperature.
Embodiment 2
The liquid crystal host HTG135200-100 (mass fraction 85%) of blue-phase liquid crystal composite material, chirality in the present embodiment
Dopant R5011 (mass fraction 5%), can photoinduction polymerized monomer RM257 (mass fraction 4%) and KH (mass fraction 4%),
Photoinitiator IRG1184 (mass fraction 2%) is successively mixed, and solvent is added and is dissolved.After completely dissolution, solvent is removed
It goes.In KH, R1For CH3, R2For OCH3, R3For OH, R4For OH, a=3.
Obtained blue-phase liquid crystal composite material is heated to isotropism, is circulated into electroded IPS liquid crystal cell, is utilized
Cold and hot temperature control, and UV light-induced polymerization is carried out within the scope of blue phase.Mode of operation is the same as embodiment 1.
Obtained blue-phase liquid crystal composite material cools down to test its minimum temperature.Due to equipment limit, lowest temperature is only
Subzero 30 DEG C can be dropped to, is still able to maintain blue phase at this temperature.Maximum temperaturerise is still able to maintain blue phase to 80 DEG C at this temperature.
Fig. 2 is the SEM image of polymer in 2 gained blue-phase liquid crystal composite material of embodiment.Polymer as shown in Figure 2
SEM image can stablize this blue phase liquid it is found that polymer network structure is fine and close in the blue-phase liquid crystal composite material well
It is brilliant.
Embodiment 3
By the resulting blue-phase liquid crystal composite material of embodiment 2, it is switched in photoelectric property test access and carries out photoelectric property
Test, is detailed in attached drawing 1.Fig. 1 shows this material in 411nm, 458nm, the photoelectric property curve under 552nm and 642nm wavelength
(transmittance values), obtaining minimum voltage is 43V.The composite property parameter that the present embodiment obtains: change in relative permeability
Character voltage (V, 25 DEG C) when 10% is 22V；Character voltage (V, 25 DEG C) when relative permeability changes 90% is 36V.
By the resulting blue-phase liquid crystal composite material of embodiment 2, it is placed on observed under electron microscope, is detailed in attached drawing 2.It obtains tight
Close SEM image.
Above, 110 DEG C are above using the temperature range of the novel blue-phase liquid crystal composite material containing siloxanes, met
The demand of daily life.Minimum voltage is 43V, compare we other can photoinduction blue-phase liquid crystal composite material minimum voltage
60V reduces 17V, opens new thinking for blue-phase liquid crystal composite material.
Comparative example 1
Liquid crystal host HTG135200-100 (mass fraction 85%), the chiral doping of blue-phase liquid crystal composite material in this example
Agent R5011 (mass fraction 5%), can photoinduction polymerized monomer RM257 (mass fraction 4%) and lauryl methacrylate (matter
Amount score 4%), photoinitiator IRG1184 (mass fraction 2%) successively mixes, and solvent is added and is dissolved.Sufficiently dissolution
Afterwards, solvent is removed.
The resulting blue-phase liquid crystal composite material of this comparative example is switched to progress photoelectric property survey in photoelectric property test access
Examination, is detailed in attached drawing 3.Fig. 3 shows this material in 411nm, 458nm, and the photoelectric property curve under 552nm and 642nm wavelength is (thoroughly
Radiance rate value), obtaining minimum voltage is 60V.
Embodiment 4
The liquid crystal host HTG135200-100 (mass fraction 87%) of blue-phase liquid crystal composite material, chirality are mixed in the present invention
Miscellaneous dose of R5011 (mass fraction 5%), can photoinduction polymerized monomer KH (mass fraction 5%), photoinitiator IRG1184 (quality point
Number 3%) successively mix, and solvent is added and is dissolved.After completely dissolution, solvent is removed.In KH, wherein R1For CH3, R2
For OCH3, R3For OH, R4For OH, a=5.
The preparation method is the same as that of Example 1.
Obtained blue-phase liquid crystal composite material cools down to test its minimum temperature.Due to equipment limit, lowest temperature is only
Subzero 30 DEG C can be dropped to, is still able to maintain blue phase at this temperature.Maximum temperaturerise is still able to maintain blue phase to 80 DEG C at this temperature.
Embodiment 5
The liquid crystal host HTG135200-100 (mass fraction 85%) of blue-phase liquid crystal composite material, chirality are mixed in the present invention
Miscellaneous dose of R5011 (mass fraction 5%), can photoinduction polymerized monomer RM257 (mass fraction 5%) and KH (mass fraction 5%), and
And solvent is added and is dissolved.After completely dissolution, solvent is removed.In KH, wherein R1For CH3, R2For OCH3, R3For OH, R4For
OH, a=5.
The preparation method is the same as that of Example 1.
Obtained blue-phase liquid crystal composite material keeps blue phase (72.4 DEG C -59.6 DEG C of temperature range), illumination before illumination
Later without significant change.
Finally it should be noted that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although reference
Preferred embodiment describes the invention in detail, it will be appreciated by those skilled in the art that can be to technical side of the invention
Case is modified or replaced equivalently, and without departing from the spirit and scope of the technical solution of the present invention, should all be covered in this hair
In bright scope of the claims.
Claims (10)
1. a kind of blue-phase liquid crystal composite material, which is characterized in that including liquid crystal host, chiral dopant, can photoinduction polymerization
Monomer and photoinitiator,
Described can include KH, the general structure of KH in the monomer of photoinduction polymerization are as follows:
Wherein, R1For CH3Or H；
R2For OH or OCH3、OC2H5、OC3H7、OSi(OH)3、OSi(CH3)3、OSi(C2H5)3；
R3For OH or OCH3、OC2H5、OC3H7、OSi(OH)3、OSi(CH3)3、OSi(C2H5)3；
R4For OH or OCH3、OC2H5、OC3H7、OSi(OH)3、OSi(CH3)3、OSi(C2H5)3；
A indicates that the carbon atom number of alkyl, a are the integer of 2-8.
2. blue-phase liquid crystal composite material according to claim 1, which is characterized in that the liquid crystal host is HTG135200-
100, one of SLC7011, SCL1717, the chiral dopant are one of R5011, R811, S811 or a variety of.
3. blue-phase liquid crystal composite material according to claim 1, which is characterized in that it is described can photoinduction polymerization monomer also
Including one of RM257, C12A, C12M or a variety of, the photoinitiator is IRG184, benzyl phenyl ketone, styrax, styrax
One of methyl ether, benzoin ethyl ether are a variety of.
4. blue-phase liquid crystal composite material according to claim 1, which is characterized in that the blue-phase liquid crystal composite material
In, can photoinduction polymerized monomer mass fraction be 0%~50%, the mass fraction of chiral dopant is 1%~10%, light-initiated
The mass fraction of agent is 0~5%, and the mass fraction of liquid crystal host is 50%~90%.
5. blue-phase liquid crystal composite material according to claim 4, which is characterized in that the blue-phase liquid crystal composite material
In, can photoinduction polymerized monomer mass fraction be 1%~20%, the mass fraction of chiral dopant is 1%~6%, light-initiated
The mass fraction of agent is 1~3%, and the mass fraction of liquid crystal host is 75%~90%.
6. described in any item blue-phase liquid crystal composite materials according to claim 1~5, which is characterized in that the blue phase liquid crystal
In composite material, can photoinduction polymerized monomer be made of 1-10 mass parts KH and 0-10 mass parts RM257.
7. the preparation method of the described in any item blue-phase liquid crystal composite materials of claim 1~6, which is characterized in that including following
Operation:
Each component of the blue-phase liquid crystal composite material is formulated to together, is added after solvent sufficiently dissolves and waves solvent
Hair shaft is circulated into liquid crystal cell, is gradually decreased using cold and hot control temperature, is utilized polarized light microscope observing composite material texture
Variation, and UV light-induced polymerization is carried out in blue phase temperature range.
8. the preparation method of blue-phase liquid crystal composite material according to claim 7, which is characterized in that described cold and hot in light
According to preceding cooling rate be 0.2~0.5 DEG C/min, described cold and hot after illumination cooling rate be 1~3 DEG C/min.
9. the preparation method of blue-phase liquid crystal composite material according to claim 7, which is characterized in that the ultraviolet ray intensity
For 5~10mW/cm2, the induced polymerization time is 1-10min.
10. the liquid crystal device of the described in any item blue-phase liquid crystal composite material compositions of claim 1~6.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112175627A (en) * | 2020-09-24 | 2021-01-05 | 北京科技大学 | Preparation method of blue phase liquid crystal composite material containing fluorene core bending type compound |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1715309A (en) * | 2005-07-22 | 2006-01-04 | 东北大学 | Thermotropic front cholesteric liquid crystal polymer and its preparing method |
| CN101007949A (en) * | 2007-01-23 | 2007-08-01 | 北京科技大学 | Process for preparing high polymer dispersed liquid crystal film material |
| CN102517040A (en) * | 2011-12-15 | 2012-06-27 | 昆山龙腾光电有限公司 | Blue phase liquid crystal material formulation, blue phase liquid crystal material and production method thereof |
| CN102540544A (en) * | 2010-12-22 | 2012-07-04 | 光子动力学公司 | Encapsulated polymer network liquid crystal material, device and applications |
| CN102952551A (en) * | 2012-10-24 | 2013-03-06 | 京东方科技集团股份有限公司 | Polymer dispersed blue-phase liquid crystal material and preparation method thereof as well as liquid crystal display device |
| CN103149725A (en) * | 2013-02-20 | 2013-06-12 | 北京京东方光电科技有限公司 | Liquid crystal panel manufacturing method, liquid crystal mixture and liquid crystal panel |
| CN103215050A (en) * | 2013-03-28 | 2013-07-24 | 京东方科技集团股份有限公司 | Blue-phase liquid crystal composite material and liquid crystal display comprising same |
| CN103529601A (en) * | 2013-11-08 | 2014-01-22 | 河北工业大学 | Blue-phase liquid crystal display with low driving voltage and high transmittance |
| CN104263384A (en) * | 2014-09-03 | 2015-01-07 | 石家庄诚志永华显示材料有限公司 | Polymer stabilized blue phase liquid crystal composition as well as preparation method and application of liquid crystal composition |
| CN105259679A (en) * | 2015-09-11 | 2016-01-20 | 京东方科技集团股份有限公司 | Electronic control dimming film, preparation method thereof, and display device |
| CN105348295A (en) * | 2015-09-25 | 2016-02-24 | 西安近代化学研究所 | Polymer monomer used for stable blue phase liquid crystal and synthesis method |
| CN105392864A (en) * | 2013-04-28 | 2016-03-09 | 华东理工大学 | Polymer-stabilized dual frequency blue phase liquid crystals |
| CN110095896A (en) * | 2018-01-29 | 2019-08-06 | 北京大学 | A kind of preparation method of the light modulation film based on Liquid Crystal/Polymer composite material |
-
2018
- 2018-03-26 CN CN201810253368.7A patent/CN110358549B/en not_active Expired - Fee Related
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1715309A (en) * | 2005-07-22 | 2006-01-04 | 东北大学 | Thermotropic front cholesteric liquid crystal polymer and its preparing method |
| CN101007949A (en) * | 2007-01-23 | 2007-08-01 | 北京科技大学 | Process for preparing high polymer dispersed liquid crystal film material |
| CN102540544A (en) * | 2010-12-22 | 2012-07-04 | 光子动力学公司 | Encapsulated polymer network liquid crystal material, device and applications |
| CN102517040A (en) * | 2011-12-15 | 2012-06-27 | 昆山龙腾光电有限公司 | Blue phase liquid crystal material formulation, blue phase liquid crystal material and production method thereof |
| CN102952551A (en) * | 2012-10-24 | 2013-03-06 | 京东方科技集团股份有限公司 | Polymer dispersed blue-phase liquid crystal material and preparation method thereof as well as liquid crystal display device |
| CN103149725A (en) * | 2013-02-20 | 2013-06-12 | 北京京东方光电科技有限公司 | Liquid crystal panel manufacturing method, liquid crystal mixture and liquid crystal panel |
| CN103215050A (en) * | 2013-03-28 | 2013-07-24 | 京东方科技集团股份有限公司 | Blue-phase liquid crystal composite material and liquid crystal display comprising same |
| CN105392864A (en) * | 2013-04-28 | 2016-03-09 | 华东理工大学 | Polymer-stabilized dual frequency blue phase liquid crystals |
| CN103529601A (en) * | 2013-11-08 | 2014-01-22 | 河北工业大学 | Blue-phase liquid crystal display with low driving voltage and high transmittance |
| CN104263384A (en) * | 2014-09-03 | 2015-01-07 | 石家庄诚志永华显示材料有限公司 | Polymer stabilized blue phase liquid crystal composition as well as preparation method and application of liquid crystal composition |
| CN105259679A (en) * | 2015-09-11 | 2016-01-20 | 京东方科技集团股份有限公司 | Electronic control dimming film, preparation method thereof, and display device |
| CN105348295A (en) * | 2015-09-25 | 2016-02-24 | 西安近代化学研究所 | Polymer monomer used for stable blue phase liquid crystal and synthesis method |
| CN110095896A (en) * | 2018-01-29 | 2019-08-06 | 北京大学 | A kind of preparation method of the light modulation film based on Liquid Crystal/Polymer composite material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112175627A (en) * | 2020-09-24 | 2021-01-05 | 北京科技大学 | Preparation method of blue phase liquid crystal composite material containing fluorene core bending type compound |
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