CN110229679A - A kind of liquid crystal media from orientation additive and the preparation method and application thereof - Google Patents
A kind of liquid crystal media from orientation additive and the preparation method and application thereof Download PDFInfo
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- CN110229679A CN110229679A CN201810184733.3A CN201810184733A CN110229679A CN 110229679 A CN110229679 A CN 110229679A CN 201810184733 A CN201810184733 A CN 201810184733A CN 110229679 A CN110229679 A CN 110229679A
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- isosorbide
- phenylene
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
- C07D333/02—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings
- C07D333/04—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom
- C07D333/06—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to the ring carbon atoms
- C07D333/14—Radicals substituted by singly bound hetero atoms other than halogen
- C07D333/16—Radicals substituted by singly bound hetero atoms other than halogen by oxygen atoms
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
- C07D333/02—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings
- C07D333/04—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom
- C07D333/26—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D333/30—Hetero atoms other than halogen
- C07D333/32—Oxygen atoms
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- 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
- C09K19/56—Aligning agents
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
Abstract
The present invention relates to a kind of liquid crystal medias from orientation additive and the preparation method and application thereof；It is described from orientation additive be following general formula I compound；Wherein, R represents alkyl, alkoxy, alkenyl or the alkenyloxy group with 1-10 carbon atom；Ring A represents Isosorbide-5-Nitrae-phenylene, 1 or 4 cyclohexylidene, Isosorbide-5-Nitrae-cyclohexadienylidene or 1-4 hydrogen atom by fluorine-substituted Isosorbide-5-Nitrae-phenylene；Ring B represents Isosorbide-5-Nitrae-phenylene, 1 or 4 cyclohexylidene or 1-4 hydrogen atom by fluorine-substituted Isosorbide-5-Nitrae-phenylene；L, m is independent represents 0,1 or 2, and 0 l+m≤3 <；N represents 0,1,2,3,4,5,6,7,8,9 or 10.It is described from orientation additive be free of PI alignment films in the case where, realize the vertical orientation of liquid crystal molecule；And cheap, performance is stablized, and can be widely used for field of liquid crystal display, has important application value.
Description
Technical field
The invention belongs to liquid crystal material technical fields, are related to a kind of from orientation additive and the preparation method and application thereof.
Background technique
In recent years, liquid crystal display device is widely used in various electronic equipments, such as smart phone, tablet computer, automobile
Navigator, television set etc..Representative liquid crystal display mode has twisted-nematic (TN) type, super twisted nematic (STN) type, face inscribe
Change (IPS) type, fringing field switching (FFS) type and vertical orientation (VA) type.Wherein, when VA mode is due to having quickly decline
Between, the image of high contrast, wide viewing angle and high quality, and receive more and more attention.
In conventional VA display, after electrode is made in glass substrate, surface need to be coated with a strata acid imide (PI) and take
To film, to realize the vertical orientation of liquid crystal molecule.But there is clearly disadvantageous for this method: the coating process of PI alignment films is numerous
It is trivial, it takes a long time, considerably increases production cost.Friction matching type PI alignment films friction preparation process in can generate dust and
Electrostatic influences the performance of liquid crystal media, or even liquid crystal display element can be damaged in friction process；Light alignment-type PI oriented material
Although avoiding drawbacks described above, it is weaker to the anchoring ability of liquid crystal molecule, and is restricted by own material performance, application
Also it is restricted.Therefore, a kind of in the case where PI alignment films are not present, it can be realized the vertical of liquid crystal molecule vertical orientation
It just comes into being from orientation (self-alignment for vertical alignment, SAVA) technology.
To realize the vertical from orientation of liquid crystal media, need to be added in mixed crystal medium a certain amount of from orientation additive.
Therefore, for the raising and improvement of SAVA technology, new structural synthesis and structure-performance relation research from orientation additive
An important process as field of liquid crystals.
Summary of the invention
The first object of the present invention is to provide a kind of compound from orientation additive of liquid crystal media, described to add from orientation
Agent is added to can be used for SAVA technology.The compound passes through the interaction of-OH and substrate surface, the case where being free of PI alignment films
Under, realize the vertical orientation of liquid crystal molecule.And the compound is cheap, performance is stablized, and can be widely used for field of liquid crystal display,
With important application value.
It is described from orientation additive be following general formula I compound；
In the general formula I, R represents alkyl, alkoxy, alkenyl or the alkenyloxy group with 1-10 carbon atom；Ring A represents 1,
4- phenylene, 1 or 4 cyclohexylidene, Isosorbide-5-Nitrae-cyclohexadienylidene or 1-4 hydrogen atom are by fluorine-substituted Isosorbide-5-Nitrae-phenylene；Ring B generation
Table Isosorbide-5-Nitrae-phenylene, 1 or 4 cyclohexylidene or 1-4 hydrogen atom are by fluorine-substituted Isosorbide-5-Nitrae-phenylene；L, m representative independent
0,1 or 2, and 0 l+m≤3 <；N represents 0,1,2,3,4,5,6,7,8,9 or 10.
Preferably, in the general formula I, R represents alkyl, alkoxy, alkenyl or the alkenyloxy group with 1-10 carbon atom；More
Preferably, R represents the alkyl or alkoxy with 1-10 carbon atom；It is further preferred that R, which is represented, has 1-5 carbon atom
Alkyl or alkoxy.
Preferably, in the general formula I, ring A represents Isosorbide-5-Nitrae-phenylene, 1 or 4 cyclohexylidene, Isosorbide-5-Nitrae-cyclohexadienylidene or 1-
4 hydrogen atoms are by fluorine-substituted 1,4- phenylene；It is highly preferred that ring A represents Isosorbide-5-Nitrae-phenylene, 1 or 4 cyclohexylidene, Isosorbide-5-Nitrae-Asia
Cyclohexenyl group, the fluoro- Isosorbide-5-Nitrae-phenylene of 2-, 2,3- bis- fluoro- Isosorbide-5-Nitrae-phenylenes or 2, the fluoro- Isosorbide-5-Nitrae-phenylene of 6- bis-
Preferably, in the general formula I, ring B represents Isosorbide-5-Nitrae-phenylene, and 1 or 4 cyclohexylidene or 1-4 hydrogen atom are taken by fluorine
The 1,4- phenylene in generation；It is highly preferred that ring B represents Isosorbide-5-Nitrae-phenylene, the fluoro- Isosorbide-5-Nitrae-phenylene of 2-, 2,3- bis- fluoro- Isosorbide-5-Nitraes-Asia benzene
Base or 2, the fluoro- Isosorbide-5-Nitrae-phenylene of 6- bis-
Preferably, in the general formula I, l, m are independent to represent 0,1 or 2, and 0 l+m≤3 <；It is highly preferred that l, m points
Not Wei 0,1 or 2, and 0 l+m≤2 <；Further preferably l, m are 1
Preferably, in the general formula I, n represents 0,1,2,3,4,5,6,7,8,9 or 10；It is highly preferred that n represents 0,1,2,
3,4 or 5.
Preferably, in the general formula I, R represents the alkyl and alkoxy with 1-10 carbon atom；Ring A represents the Asia 1,4-
Phenyl, 1 or 4 cyclohexylidene, Isosorbide-5-Nitrae-cyclohexadienylidene or 1-4 hydrogen atom are by fluorine-substituted Isosorbide-5-Nitrae-phenylene；Ring B represents 1,
4- phenylene or 1-4 hydrogen atom are by fluorine-substituted Isosorbide-5-Nitrae-phenylene；L, m is respectively 0,1 or 2, and 0 l+m≤2 <；N is represented
0,1,2,3,4 or 5；
It is highly preferred that R represents the alkyl or alkoxy with 1-5 carbon atom in the general formula I；Ring A represents the Asia 1,4-
Phenyl, 1 or 4 cyclohexylidene, Isosorbide-5-Nitrae-cyclohexadienylidene, the fluoro- Isosorbide-5-Nitrae-phenylene of 2-, 2,3- bis- fluoro- Isosorbide-5-Nitrae-phenylenes or 2,6- bis-
Fluoro- 1,4- phenylene；Ring B represents Isosorbide-5-Nitrae-phenylene, the fluoro- Isosorbide-5-Nitrae-phenylene of 2-, 2,3- bis- fluoro- Isosorbide-5-Nitrae-phenylenes or 2,6- bis-
Fluoro- 1,4- phenylene；L, m is 1；N represents 0,1,2,3,4 or 5；
As optimal embodiment of the invention, compound representated by the general formula I in such as flowering structure one
Kind:
In the structure, R represents the alkyl or alkoxy with 1-5 carbon atom；N represents 0,1,2,3,4 or 5.
The second object of the present invention is to provide the preparation method of the compound from orientation additive
(1) when the ring A represents Isosorbide-5-Nitrae-phenylene or 1-4 hydrogen atom by fluorine-substituted Isosorbide-5-Nitrae-phenylene, road is synthesized
Line specifically:
Wherein, R, l, m, n and product in the synthetic route in each compound
Middle R, l, m, n are consistent；X1Represent Br, Cl or I；
Preferably, the preparation method specifically includes the following steps:
1) willIt reacts, obtains after organolithium reagent progress metallization reaction, then with borate
2) willIt is obtained with step 1)It is anti-by suzuki
It answers, obtains
3) step 2) is madeBy hydrolysis, product is obtained
It is highly preferred that the hydrolysis of the step 3) specifically will be described
It is added in Boron tribromide and is reacted.
Present invention further propose that, it is described in the step 1)With the organolithium reagent
Molar ratio is 1:1.0~2.0；It is describedWith the molar ratio of the borate be 1:1.0~
3.0；
Preferably, the organolithium reagent is selected from one or more of s-butyl lithium, tert-butyl lithium or n-BuLi；
The borate in trimethylborate, three isobutyl ester of triisopropyl borate ester, butyl borate or boric acid one
Kind is several.
Preferably, the reaction temperature of the step 1) is -50~-100 DEG C；
Present invention further propose that, it is described in the step 2)With it is describedMolar ratio be 1.0:1.0~1.5；
Preferably, the reaction temperature of the step 2) can be 50~150 DEG C；
Wherein, describedIt can be obtained by public commercial source.
Present invention further propose that, it is described in the step 3)With institute
The molar ratio for stating Boron tribromide is 1:1.0~1.3；
Preferably, the reaction temperature of the step 3) can be -30~-5 DEG C.
(2) when the ring A represents Isosorbide-5-Nitrae-cyclohexadienylidene, synthetic route specifically:
Wherein, R, l, m, n and product in the synthetic route in each compound
Middle R, l, m, n are consistent；X1Represent Br, Cl or I；
Preferably, the preparation method specifically includes the following steps:
1) willAfter carrying out metallization reaction with organolithium, then withReaction,
It obtains
2) step 1) is obtainedIt handles, obtains through acid-catalyzed dehydration
3) step 2) is obtainedBy hydrolysis, product is obtained
Present invention further propose that, it is described in the step 1)With the organolithium reagent
Molar ratio is 1:1.0~2.0, describedWith it is describedMolar ratio be 1:0.8
~1.5；
Preferably, the organolithium reagent is selected from one or more of s-butyl lithium, tert-butyl lithium or n-BuLi；It is excellent
Select n-BuLi；
It is describedWith it is describedIt can be obtained by public commercial source；
Preferably, the reaction temperature of the step 1) is -50~-100 DEG C；
Present invention further propose that, it is described in the step 2)With institute
The molar ratio for stating acid is 1:0.02~0.2；
Preferably, the acid is selected from one of hydrochloric acid, sulfuric acid, formic acid, acetic acid, p-methyl benzenesulfonic acid, potassium acid sulfate or several
Kind；Preferably p-methyl benzenesulfonic acid；
Preferably, the reaction temperature of the step 2) can be 50~120 DEG C；
Present invention further propose that, it is described in the step 3)With institute
The molar ratio for stating Boron tribromide is 1:1.0~1.3；
Preferably, the reaction temperature of the step 3) can be -30~-5 DEG C.
(3) when the ring A represents 1 or 4 cyclohexylidene, synthetic route specifically:
Wherein, R, l, m, n and product in the synthetic route in each compound
Middle R, l, m, n are consistent；X1Represent Br, Cl or I；
Preferably, the preparation method specifically includes the following steps:
1) willAfter carrying out metallization reaction with organolithium, then withReaction, obtains
It arrives
2) step 1) is obtainedWith boron trifluoride ether, triethylsilane
Reaction, obtains
3) step 2) is obtainedBy hydrolysis, product is obtained
It is highly preferred that the hydrolysis of the step 3) specifically will be described
It is added in Boron tribromide and is reacted.
Present invention further propose that in the step 1), it is describedWith the throwing of the organolithium reagent
Material molar ratio is 1:1.0~2.0, describedWith it is describedMolar ratio be 1:
0.8~1.5；
Preferably, the organolithium reagent is selected from one or more of s-butyl lithium, tert-butyl lithium or n-BuLi, more
Preferably n-BuLi；
It is describedWith it is describedIt can be obtained by public commercial source；
Preferably, the reaction temperature of the step 1) is -50~-100 DEG C；
Present invention further propose that in the step 2), it is describedWith it is described
The molar ratio of boron trifluoride ether is 1:1.0~3.0；It is describedWith described three
The molar ratio of ethylsilane is 1:1.0~3.0；
Preferably, the reaction temperature of the step 2) can be 30~-90 DEG C；
Present invention further propose that in the step 3), it is describedWith it is described
The molar ratio of Boron tribromide is 1:1.0~1.3；
Preferably, the reaction temperature of the step 3) can be -30~-5 DEG C.
Preparation method of the present invention, including above-mentioned three kinds of methods, can be related to conventional post-processing, the routine if necessary
Post-processing is specific such as: it is washed with methylene chloride, ethyl acetate or toluene extraction, liquid separation, dry, vacuum rotary evaporator evaporation,
Products therefrom vacuum distillation or recrystallization and/or chromatography purification.
Preparation method of the present invention can be stablized, be efficiently obtained compound of the present invention.
The third object of the present invention provide it is a kind of containing the above-mentioned composition from orientation additive, based on it is of the present invention from
Orientation additive, above-mentioned composition provided by the invention have the function of that protection is described from orientation additive.
Preferably, in the composition, it is described from orientation additive mass percent in the composition be 0.01
~15%, preferably 0.1~10%, more preferably 0.1~5%.
Except the common protection of the present invention that this field can further be added from orientation additive, the composition
Agent, it is specific select/combination etc. grasped by those skilled in the art, the present invention is not particularly limited this.
Only preferably, the composition is in addition to the additive from orientation, based on 100%, by the component of following table
Composition.
The fourth object of the present invention is, provide it is above-mentioned from orientation additive or protection containing above-mentioned from orientation additive
Application of the composition in field of liquid crystal display；It is preferred that the application in liquid crystal display device；
The liquid crystal display device includes but is not limited to VA, TN, STN, FFS or IPS liquid crystal display.
It is of the present invention to can be realized without polyimide alignment layers from orientation additive, liquid crystal molecule
It is vertical from orientation；Negative dielectric anisotropic is high, and has high clearing point simultaneously, and relatively high optical anisotropy is moderate
Rotary viscosity and liquid crystal intersolubility, low-temperature working effect performance it is outstanding, good thermal stability, chemical stability, optics are steady
The performance of qualitative and mechanics etc.；To which driving voltage be effectively reduced, the response speed of liquid crystal display device is improved, simultaneously
Have the characteristics that optical anisotropy numerical value is moderate, charge conservation rate is high.
Specific embodiment
The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention..
The raw material unless otherwise instructed, can be obtained from public commercial source.
According to the common detection methods of this field, the various performance parameters of liquid-crystal compounds are obtained by linear fit,
In, the concrete meaning of each performance parameter is as follows:
△ n represents optical anisotropy (25 DEG C)；△ ε represents dielectric anisotropy (25 DEG C, 1000Hz)；ε | | it represents flat
The dielectric constant (25 DEG C, 1000Hz) of row molecular axis direction；Cp represents clearing point；K represents elastic constant (25 DEG C).
Embodiment 1
The structural formula of liquid-crystal compounds are as follows:
The synthetic line of prepare compound BYLC-01 is as follows:
Specific step is as follows:
(1) synthesis of compound BYLC-01-1:
Under nitrogen protection, 35g is added into reaction flask(0.287mol), 150ml tetrahydrofuran, control
The hexane solution of -70~-80 DEG C of dropwise addition 0.37mol n-BuLis of temperature, drips and finishes temperature control reaction 1 hour, temperature control -60~-70 DEG C
It is added dropwise 46.6g trimethylborate (0.44mol), then rises again naturally to -30 DEG C.2M aqueous hydrochloric acid solution 400ml is added and carries out acid
To change, carries out conventional post-processing, petroleum ether is recrystallized to give light yellow solid (compound BYLC-01-1,0.259mol) 43.0g,
HPLC:99.7%, yield: 90.2%.
(2) synthesis of compound BYLC-01-2:
Under nitrogen protection, 43.0g compound BYLC-01-1 (0.259mol) is added into reaction flask, 78.5g compound(0.259mol), 200ml n,N-Dimethylformamide, 100ml deionized water, the anhydrous carbon of 72.8g
Sour potassium (0.53mol), 0.5g tetra-triphenylphosphine palladium are heated to 70 DEG C and react 3 hours.Conventional post-processing is carried out, through chromatogram purification,
N-hexane elution, ethyl alcohol recrystallization obtain white solid (compound BYLC-01-2,0.192mol) 66.1g, GC:99.7%, receive
Rate: 74.1%.
(3) synthesis of compound BYLC-01:
66.1g compound BYLC-01-2 (0.192mol) is introduced into 1000ml methylene chloride at -10 DEG C, and is added dropwise
The solution of the Boron tribromide of the 1M of 250ml (0.25mol) in hexane.Stop cooling, stirs 3 hours at room temperature.Then it cools down
To -10 DEG C, 500ml deionized water is added, stirs 3 hours.Then conventional post-processing operation is carried out, through methylene chloride dissolution point
The volume ratio of liquid, chromatogram purification, normal heptane and toluene is that the mixed solution of 3:1 is recrystallized, and obtains white solid (BYLC-
01)51.5g(0.156mol).GC:99.8%, yield: 81.3%.
Gained white solid BYLC-01 is analyzed using GC-MS, the m/z of product is 330.1 (M+).
1H-NMR(300MHz,CDCl3):0.75-1.25(m,3H),1.95-2.65(m,3H),4.75-5.05(m,2H),
6.55-7.45(m,8H)。
Embodiment 1
Technical solution according to embodiment 1, it is only necessary to the corresponding raw material of simple replacement does not change any substantive operations,
Following compound can be synthesized:
R represents the alkyl or alkoxy with 1-5 carbon atom；N represents 0,1,2,3,4 or 5.
Embodiment 3
The structural formula of liquid-crystal compounds are as follows:
The synthetic line of prepare compound BYLC-02 is as follows:
Specific step is as follows:
(1) synthesis of compound BYLC-02-1:
35g is added in reaction flask(0.287mol), 450ml tetrahydrofuran, temperature control -70~-80 DEG C drop
Add the hexane solution of 0.315mol n-BuLi, drips and finish temperature control reaction 1 hour, 59.7g is added dropwise in temperature control -70~-80 DEG CWith the solution of 100ml tetrahydrofuran composition, is then risen again naturally to -30 DEG C, added
Enter 2M aqueous hydrochloric acid solution 500ml to be acidified, carries out conventional post-processing, be spin-dried for solvent and obtain light yellow liquid (compound BYLC-
02-1)88.8g(0.269mol).GC:91.3% (suitable+anti-), yield: 93.7%.
(2) synthesis of compound BYLC-02-2:
88.8g compound BYLC-02-1 (0.269mol) is added in reaction flask, 0.84g p-methyl benzenesulfonic acid, 500ml toluene,
Reflux dewatering 4 hours, conventional post-processing is carried out, through chromatogram purification, n-hexane elution, ethyl alcohol recrystallization obtains white solid and (changes
Close object BYLC-02-2) 72.4g (0.232mol), GC:99.7%, yield: 86.2%.
(3) synthesis of compound BYLC-02:
72.4g compound BYLC-02-2 (0.232mol) is introduced into 1200ml methylene chloride at -10 DEG C, and is added dropwise
The solution of the Boron tribromide of the 1M of 300ml (0.3mol) in hexane.Stop cooling, stirs 3 hours at room temperature.Then it cools down
To -10 DEG C, 600ml deionized water is added, stirs 3 hours.Then conventional post-processing operation is carried out, through methylene chloride dissolution point
The volume ratio of liquid, chromatogram purification, normal heptane and toluene is that the mixed solution of 3:1 is recrystallized, and obtains white solid (BYLC-
02)62.0g(0.208mol).GC:99.8%, yield: 89.7%.
Gained white solid BYLC-02 is analyzed using GC-MS, the m/z of product is 298.1 (M+).
1H-NMR(300MHz,CDCl3):0.95-1.97(m,7H),1.98-2.95(m,6H),4.55-5.96(m,3H),
6.25-7.35(m,6H)。
Embodiment 4
Technical solution according to embodiment 3, it is only necessary to the corresponding raw material of simple replacement does not change any substantive operations,
Following compound can be synthesized:
R represents the alkyl or alkoxy with 1-5 carbon atom；N represents 0,1,2,3,4 or 5.
Embodiment 5
The structural formula of liquid-crystal compounds are as follows:
The synthetic line of prepare compound BYLC-03 is as follows:
(1) synthesis of compound BYLC-03-1:
35g is added in reaction flask450ml tetrahydrofuran, temperature control -70~-80 DEG C
The hexane solution of 0.315mol n-BuLi is added dropwise, drips and finishes temperature control reaction 1 hour, 59.7g is added dropwise in temperature control -70~-80 DEG CWith the solution of 100ml tetrahydrofuran composition, is then risen again naturally to -30 DEG C, added
Enter 2M aqueous hydrochloric acid solution 500ml to be acidified, carries out conventional post-processing, be spin-dried for solvent and obtain light yellow liquid (compound BYLC-
02-1)87.5g(0.265mol).GC:90.7% (suitable+anti-), yield: 92.3%.
(2) synthesis of compound BYLC-03-2:
Under nitrogen protection, 87.5g compound BYLC-03-1 (0.265mol) and 250ml dichloromethane are added into reaction flask
62.7g triethylsilane (0.54mol) is added dropwise in alkane, temperature control -70~-80 DEG C, drips and finishes temperature control reaction 0.5 hour, and temperature control -70~-
80 DEG C of dropwise addition 84.3g boron trifluoride ether (0.585mol), then rise again naturally to -10 DEG C.500ml water quenching reaction is added,
Conventional post-processing is carried out, is obtained white solid 64.9g (compound BYLC-03-2) (0.207mol), GC:99.7%, yield:
78.1%.
(2) synthesis of compound BYLC-03:
64.9g compound BYLC-03-2 (0.207mol) is introduced into 1000ml methylene chloride at -10 DEG C, and is added dropwise
The solution of the Boron tribromide of the 1M of 270ml (0.27mol) in hexane.Stop cooling, stirs 3 hours at room temperature.Then it cools down
To -10 DEG C, 550ml deionized water is added, stirs 3 hours.Then conventional post-processing operation is carried out, through methylene chloride dissolution point
The volume ratio of liquid, chromatogram purification, normal heptane and toluene is that the mixed solution of 3:1 is recrystallized, and obtains white solid (BYLC-
03)55.2g(0.184mol).GC:99.6%, yield: 88.9%.
Gained white solid BYLC-03 is analyzed using GC-MS, the m/z of product is 300.1 (M+).
1H-NMR(300MHz,CDCl3):0.95-1.75(m,11H),1.85-2.75(m,5H),4.75-5.05(m,2H),
6.35-7.15(m,6H)。
Embodiment 5
Technical solution according to embodiment 5, it is only necessary to the corresponding raw material of simple replacement does not change any substantive operations,
Following compound can be synthesized:
R represents the alkyl or alkoxy with 1-5 carbon atom；N represents 0,1,2,3,4 or 5.
Experimental example
The composition of liquid crystal compound M is listed in Table 1 below
1 liquid crystal compound M of table forms table
The property of mixture M is listed in Table 2 below
2 mixed crystal M property summary sheet of table
| Property | Cp | Δn | Δε | ε|| | K3/K1 |
| Numerical value | +70℃ | 0.095 | -3.5 | 3.3 | 0.97 |
Mixture experimental example 1
Compound BYLC-01 and comparative CM are made an addition in composition M with the ratio of 3wt% respectively, uniformly mixed.?
The mixture is injected between two panels glass substrate on 100 DEG C of heat-carrying platforms and is divided into 4 μm of the element without alignment films.It will
The element is placed in petrographic microscope, and from lower section to element irradiation light, whether there is or not light leakages for observation.Sufficiently be orientated in liquid crystal molecule,
When light is not through the situation of element, vertical orientation is judged as " good ".It, will when observing the situation by the light of element
Vertical orientation is judged as " bad ".
Apply pulse voltage (1V and 60 microseconds) at 60 DEG C to above two element to charge.Utilize high speed potentiometer
The voltage of middle measurement decaying, finds out the area A between the voltage curve of unit period and horizontal axis during 2 seconds (0.5HZ).Face
Area when product B is decaying.Voltage retention is indicated with area A and the ratio of area B.
Concrete outcome is listed in Table 3 below
3 mixture experimental example of table, 1 property summary sheet
Mixture experimental example 2
Compound BYLC-02 and comparative CM are made an addition in composition M with the ratio of 3wt% respectively, uniformly mixed.?
The mixture is injected between two panels glass substrate on 100 DEG C of heat-carrying platforms and is divided into 4 μm of the element without alignment films.It will
The element is placed in petrographic microscope, and from lower section to element irradiation light, whether there is or not light leakages for observation.Sufficiently be orientated in liquid crystal molecule,
When light is not through the situation of element, vertical orientation is judged as " good ".It, will when observing the situation by the light of element
Vertical orientation is judged as " bad ".
Apply pulse voltage (1V and 60 microseconds) at 60 DEG C to above two element to charge.Utilize high speed potentiometer
The voltage of middle measurement decaying, finds out the area A between the voltage curve of unit period and horizontal axis during 2 seconds (0.5HZ).Face
Area when product B is decaying.Voltage retention is indicated with area A and the ratio of area B.
Concrete outcome is listed in Table 4 below
4 mixture experimental example of table, 2 property summary sheet
Mixture experimental example 3
Compound BYLC-03 and comparative CM are made an addition in composition M with the ratio of 3wt% respectively, uniformly mixed.?
The mixture is injected between two panels glass substrate on 100 DEG C of heat-carrying platforms and is divided into 4 μm of the element without alignment films.It will
The element is placed in petrographic microscope, and from lower section to element irradiation light, whether there is or not light leakages for observation.Sufficiently be orientated in liquid crystal molecule,
When light is not through the situation of element, vertical orientation is judged as " good ".It, will when observing the situation by the light of element
Vertical orientation is judged as " bad ".
Apply pulse voltage (1V and 60 microseconds) at 60 DEG C to above two element to charge.Utilize high speed potentiometer
The voltage of middle measurement decaying, finds out the area A between the voltage curve of unit period and horizontal axis during 2 seconds (0.5HZ).Face
Area when product B is decaying.Voltage retention is indicated with area A and the ratio of area B.
Concrete outcome is listed in Table 5 below
5 mixture experimental example of table, 3 property summary sheet
It is provided by the present invention it can be seen from said mixture experimental example to be added on a small quantity from orientation additive,
And there is no in the case where polyimide alignment layers, the vertical from orientation of liquid crystal molecule is realized.Compared with comparative CM, Neng Gou
While guaranteeing liquid crystal molecule good vertical orientation, its voltage retention is not reduced.
Although above the present invention is described in detail with a general description of the specific embodiments,
On the basis of the present invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Cause
This, these modifications or improvements, fall within the scope of the claimed invention without departing from theon the basis of the spirit of the present invention.
Claims (10)
1. a kind of liquid crystal media from orientation additive, which is characterized in that it is described from orientation additive be following general formula I
Compound；
In the general formula I, R represents alkyl, alkoxy, alkenyl or the alkenyloxy group with 1-10 carbon atom；Ring A represents the Asia 1,4-
Phenyl, 1 or 4 cyclohexylidene, Isosorbide-5-Nitrae-cyclohexadienylidene or 1-4 hydrogen atom are by fluorine-substituted Isosorbide-5-Nitrae-phenylene；Ring B represents 1,
4- phenylene, 1 or 4 cyclohexylidene or 1-4 hydrogen atom are by fluorine-substituted Isosorbide-5-Nitrae-phenylene；L, m it is independent represent 0,1 or
2, and 0 l+m≤3 <；N represents 0,1,2,3,4,5,6,7,8,9 or 10.
2. according to claim 1 from orientation additive, which is characterized in that in the general formula I, R, which is represented, has 1-10
The alkyl or alkoxy of carbon atom；
And/or ring A represents Isosorbide-5-Nitrae-phenylene, 1 or 4 cyclohexylidene, Isosorbide-5-Nitrae-cyclohexadienylidene or 1-4 hydrogen atom are replaced by fluorine
1,4- phenylene；
And/or ring B represents Isosorbide-5-Nitrae-phenylene or 1-4 hydrogen atom by fluorine-substituted Isosorbide-5-Nitrae-phenylene；
And/or l, m are respectively 0,1 or 2, and 0 l+m≤2 <；
And/or n represents 0,1,2,3,4 or 5；
Preferably, in the general formula I, R represents the alkyl or alkoxy with 1-5 carbon atom；
And/or ring A represents Isosorbide-5-Nitrae-phenylene, 1 or 4 cyclohexylidene, Isosorbide-5-Nitrae-cyclohexadienylidene, the fluoro- Isosorbide-5-Nitrae-phenylene of 2-, 2,3-
Two fluoro- Isosorbide-5-Nitrae-phenylenes or 2, the fluoro- Isosorbide-5-Nitrae-phenylene of 6- bis-；
And/or ring B represents Isosorbide-5-Nitrae-phenylene, the fluoro- Isosorbide-5-Nitrae-phenylene of 2-, 2,3- bis- fluoro- Isosorbide-5-Nitrae-phenylenes or 2,6- bis- fluoro- 1,
4- phenylene；
And/or l, m are 1；
And/or n represents 0,1,2,3,4 or 5；
It is highly preferred that compound representated by the general formula I is selected from such as one of flowering structure:
In the structure, R represents the alkyl or alkoxy with 1-5 carbon atom；N represents 0,1,2,3,4 or 5.
3. the preparation method of any of claims 1 or 2 from orientation additive, which is characterized in that the ring A represents Isosorbide-5-Nitrae-Asia benzene
Base or 1-4 hydrogen atom are by fluorine-substituted Isosorbide-5-Nitrae-phenylene, synthetic route specifically:
Wherein, R, l, m, n in the synthetic route in each compound are consistent with R, l, m, n in product；X1Represent Br, Cl or I；
Preferably, the preparation method specifically includes the following steps:
1) willIt reacts, obtains after organolithium reagent progress metallization reaction, then with borate
2) willIt is obtained with step 1)It is reacted, is obtained by suzuki
3) step 2) is madeBy hydrolysis, product is obtained
It is highly preferred that the hydrolysis of the step 3) specifically will be describedIt is added three
It is reacted in boron bromide.
4. preparation method according to claim 3, which is characterized in that described in the step 1)
Molar ratio with the organolithium reagent is 1:1.0~2.0；It is describedWith the throwing of the borate
Material molar ratio is 1:1.0~3.0；
It is described and/or in the step 2)With it is describedFeed intake and rub
You are than being 1.0:1.0~1.5；
It is described and/or in the step 3)It rubs with feeding intake for the Boron tribromide
You are than being 1:1.0~1.3；
Preferably:
The organolithium reagent is selected from one or more of s-butyl lithium, tert-butyl lithium or n-BuLi；
And/or the borate is in trimethylborate, three isobutyl ester of triisopropyl borate ester, butyl borate or boric acid
It is one or more of；
More preferably:
The reaction temperature of the step 1) is -50~-100 DEG C；
And/or the reaction temperature of the step 2) can be 50~150 DEG C；
And/or the reaction temperature of the step 3) can be -30~-5 DEG C.
5. the preparation method according to claim 1 or 2 from orientation additive, which is characterized in that the ring A represents Isosorbide-5-Nitrae-
Cyclohexadienylidene, synthetic route specifically:
Wherein, R, l, m, n in the synthetic route in each compound are consistent with R, l, m, n in product；X1Represent Br, Cl or I；
Preferably, the preparation method specifically includes the following steps:
1) willAfter carrying out metallization reaction with organolithium, then withReaction, obtains
2) step 1) is obtainedIt handles, obtains through acid-catalyzed dehydration
3) step 2) is obtainedBy hydrolysis, product is obtained
6. preparation method according to claim 5, which is characterized in that described in the step 1)
Molar ratio with the organolithium reagent is 1:1.0~2.0, describedWith it is described
Molar ratio be 1:0.8~1.5；
It is described and/or in the step 2)Molar ratio with the acid is
1:0.02~0.2；
It is described and/or in the step 3)It rubs with feeding intake for the Boron tribromide
You are than being 1:1.0~1.3；
Preferably:
The organolithium reagent is selected from one or more of s-butyl lithium, tert-butyl lithium or n-BuLi；
And/or the acid is selected from one or more of hydrochloric acid, sulfuric acid, formic acid, acetic acid, p-methyl benzenesulfonic acid, potassium acid sulfate；
It is highly preferred that
The reaction temperature of the step 1) is -50~-100 DEG C；
And/or the reaction temperature of the step 2) can be 50~120 DEG C；
And/or the reaction temperature of the step 3) can be -30~-5 DEG C.
7. the preparation method according to claim 1 or 2 from orientation additive, which is characterized in that the ring A represents Isosorbide-5-Nitrae-
Cyclohexylidene, synthetic route specifically:
Wherein, R, l, m, n in the synthetic route in each compound are consistent with R, l, m, n in product；X1Represent Br, Cl or I；
Preferably, the preparation method specifically includes the following steps:
1) willAfter carrying out metallization reaction with organolithium, then withReaction, obtains
2) step 1) is obtainedIt is reacted with boron trifluoride ether, triethylsilane,
It obtains
3) step 2) is obtainedBy hydrolysis, product is obtained
It is highly preferred that the hydrolysis of the step 3) specifically will be describedIt is added three
It is reacted in boron bromide.
8. preparation method according to claim 7, which is characterized in that described in the step 1)
Molar ratio with the organolithium reagent is 1:1.0~2.0, describedWith it is describedMolar ratio be 1:0.8~1.5；
It is described and/or in the step 2)With the throwing of the boron trifluoride ether
Material molar ratio is 1:1.0~3.0；It is describedIt rubs with feeding intake for the triethylsilane
You are than being 1:1.0~3.0；
It is described and/or in the step 3)It rubs with feeding intake for the Boron tribromide
You are than being 1:1.0~1.3；
Preferably,
The organolithium reagent is selected from one or more of s-butyl lithium, tert-butyl lithium or n-BuLi；
It is highly preferred that
The reaction temperature of the step 1) is -50~-100 DEG C；
And/or the reaction temperature of the step 2) can be 30~-90 DEG C；
And/or the reaction temperature of the step 3) can be -30~-5 DEG C.
9. a kind of composition containing from orientation additive, which is characterized in that add including of any of claims 1 or 2 from orientation
Add agent or the described in any item preparation methods of claim 3~8 obtained from orientation additive, it is described from orientation additive in institute
Stating the mass percent in composition is 0.01~15%, preferably 0.1~10%, more preferably 0.1~5%.
10. of any of claims 1 or 2 made from the orientation additive or the described in any item preparation methods of claim 3~8
From the application of orientation additive or composition as claimed in claim 9 in field of liquid crystal display；It is preferred that in liquid crystal display device
In application；
It is highly preferred that the liquid crystal display device is selected from one of VA, TN, STN, FFS or IPS liquid crystal display.
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| CN113088293A (en) * | 2019-12-20 | 2021-07-09 | 默克专利股份有限公司 | Liquid crystal medium and liquid crystal display comprising same |
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