WO2006016483A1 - π電子共役系有機シラン化合物、機能性有機薄膜及びそれらの製造方法 - Google Patents
π電子共役系有機シラン化合物、機能性有機薄膜及びそれらの製造方法 Download PDFInfo
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- WO2006016483A1 WO2006016483A1 PCT/JP2005/013817 JP2005013817W WO2006016483A1 WO 2006016483 A1 WO2006016483 A1 WO 2006016483A1 JP 2005013817 W JP2005013817 W JP 2005013817W WO 2006016483 A1 WO2006016483 A1 WO 2006016483A1
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- -1 ORGANOSILANE COMPOUNDS Chemical class 0.000 title claims abstract description 104
- 239000010409 thin film Substances 0.000 title claims abstract description 51
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title abstract description 96
- 230000008569 process Effects 0.000 title abstract description 19
- 239000010408 film Substances 0.000 claims abstract description 123
- 150000001875 compounds Chemical class 0.000 claims abstract description 60
- 239000000758 substrate Substances 0.000 claims abstract description 58
- 238000006243 chemical reaction Methods 0.000 claims abstract description 38
- 125000000962 organic group Chemical group 0.000 claims abstract description 38
- 125000001931 aliphatic group Chemical group 0.000 claims abstract description 28
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 26
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 24
- 229910052717 sulfur Chemical group 0.000 claims abstract description 23
- 125000003808 silyl group Chemical group [H][Si]([H])([H])[*] 0.000 claims abstract description 22
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 12
- 230000007062 hydrolysis Effects 0.000 claims abstract description 10
- 239000011356 non-aqueous organic solvent Substances 0.000 claims abstract description 8
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- 230000001747 exhibiting effect Effects 0.000 claims abstract description 5
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- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 37
- 125000005843 halogen group Chemical group 0.000 claims description 24
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 23
- 125000003118 aryl group Chemical group 0.000 claims description 13
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 12
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- 238000006959 Williamson synthesis reaction Methods 0.000 claims description 9
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical group C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 claims description 9
- 125000006615 aromatic heterocyclic group Chemical group 0.000 claims description 9
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- 125000003545 alkoxy group Chemical group 0.000 claims description 7
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- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 abstract 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract 1
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- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 26
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- 229910052711 selenium Inorganic materials 0.000 description 24
- 229910052698 phosphorus Inorganic materials 0.000 description 23
- JRNVZBWKYDBUCA-UHFFFAOYSA-N N-chlorosuccinimide Chemical compound ClN1C(=O)CCC1=O JRNVZBWKYDBUCA-UHFFFAOYSA-N 0.000 description 22
- 239000002904 solvent Substances 0.000 description 21
- YJTKZCDBKVTVBY-UHFFFAOYSA-N 1,3-Diphenylbenzene Chemical group C1=CC=CC=C1C1=CC=CC(C=2C=CC=CC=2)=C1 YJTKZCDBKVTVBY-UHFFFAOYSA-N 0.000 description 20
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- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 20
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- 238000005259 measurement Methods 0.000 description 16
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 16
- PWYVVBKROXXHEB-UHFFFAOYSA-M trimethyl-[3-(1-methyl-2,3,4,5-tetraphenylsilol-1-yl)propyl]azanium;iodide Chemical compound [I-].C[N+](C)(C)CCC[Si]1(C)C(C=2C=CC=CC=2)=C(C=2C=CC=CC=2)C(C=2C=CC=CC=2)=C1C1=CC=CC=C1 PWYVVBKROXXHEB-UHFFFAOYSA-M 0.000 description 15
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- 125000000524 functional group Chemical group 0.000 description 12
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 12
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- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 12
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- 150000003577 thiophenes Chemical class 0.000 description 9
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 8
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- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 6
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 6
- 150000004795 grignard reagents Chemical class 0.000 description 6
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 6
- 229920003223 poly(pyromellitimide-1,4-diphenyl ether) Polymers 0.000 description 6
- 239000007858 starting material Substances 0.000 description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 5
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 5
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- 229910052731 fluorine Inorganic materials 0.000 description 5
- 125000000623 heterocyclic group Chemical group 0.000 description 5
- MZRVEZGGRBJDDB-UHFFFAOYSA-N n-Butyllithium Substances [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 5
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- SLIUAWYAILUBJU-UHFFFAOYSA-N pentacene Chemical class C1=CC=CC2=CC3=CC4=CC5=CC=CC=C5C=C4C=C3C=C21 SLIUAWYAILUBJU-UHFFFAOYSA-N 0.000 description 5
- 125000005007 perfluorooctyl group Chemical group FC(C(C(C(C(C(C(C(F)(F)F)(F)F)(F)F)(F)F)(F)F)(F)F)(F)F)(F)* 0.000 description 5
- GQHTUMJGOHRCHB-UHFFFAOYSA-N 2,3,4,6,7,8,9,10-octahydropyrimido[1,2-a]azepine Chemical compound C1CCCCN2CCCN=C21 GQHTUMJGOHRCHB-UHFFFAOYSA-N 0.000 description 4
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- OHZAHWOAMVVGEL-UHFFFAOYSA-N 2,2'-bithiophene Chemical compound C1=CSC(C=2SC=CC=2)=C1 OHZAHWOAMVVGEL-UHFFFAOYSA-N 0.000 description 3
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
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Definitions
- the present invention relates to a ⁇ -electron conjugated organic silane compound, in particular, a ⁇ -electron conjugated organic silane compound useful as an electric material, a functional organic thin film using the organic silane compound, and a method for producing them.
- the present invention relates to a ⁇ -electron conjugated organic silane compound capable of controlling the molecular arrangement in the film by the molecular chemical structure, and as a result, controlling the conductive properties, a functional organic thin film using the organic silane compound, and
- the present invention relates to a manufacturing method thereof.
- a TFT organic thin film transistor having a high mobility
- an organic compound containing a ⁇ -electron conjugated molecule As a representative example of this organic compound, pentacene has been reported (for example, Non-Patent Document 1).
- a field effect mobility of 1.5 cm 2 ZVs is obtained, and a TFT having a higher mobility than amorphous silicon is constructed. It has been reported that this is possible.
- a self-assembled film is a film having a high degree of order (crystallinity) with few defects and a part of an organic compound bonded to a functional group on the substrate surface. Since this self-organized film has a very simple manufacturing method, it can be easily formed on a substrate.
- thiol films formed on gold substrates and key compound films formed on substrates capable of projecting hydroxyl groups on the surface (for example, silicon substrates) by hydrophilization are known as self-assembled films. It has been.
- key compound compounds are attracting attention because of their high durability.
- the silicon-based compound film has been conventionally used as a water repellent coating, and has been formed using a silane coupling agent having an alkyl group having a high water repellency effect or a fluoroalkyl group as an organic functional group.
- the conductivity of the self-assembled film is determined by the organic functional group in the silicon compound contained in the film, but commercially available silane coupling agents have a ⁇ -electron conjugate to the organic functional group. Therefore, it is difficult to impart conductivity to the self-assembled film. Therefore, there is a need for a key compound that contains a ⁇ -electron conjugated molecule as an organic functional group and is suitable for devices such as TFT.
- a compound having one thiophene ring as a functional group at the end of a molecule and a thiophene ring bonded to Si via a linear hydrocarbon group has been proposed.
- Patent Document 1 a polyacetylene film has been proposed in which a —Si—O— network is formed on a substrate by a chemical adsorption method to polymerize an acetylene group portion (for example, Patent Document 2).
- a silicon compound in which a linear hydrocarbon group is bonded to the 2nd and 5th positions of the thiophene ring and the end of the linear hydrocarbon is bonded to a silanol group is used.
- An organic device has been proposed in which a conductive thin film is formed by organizing and polymerizing molecules by electric field polymerization or the like, and this conductive thin film is used as a semiconductor layer (for example, Patent Document 3). Furthermore, a semiconductor mainly composed of a key compound having a silanol group in the thiophene ring contained in polythiophene. A field effect transistor using a thin film has been proposed (for example, Patent Document 4).
- the compounds proposed above can produce self-assembled films that can be chemically adsorbed to the substrate, but they can be used for electronic devices such as TFTs ( A film having crystallinity) and electric conduction characteristics could not always be produced. Furthermore, when the compounds proposed above are used in the semiconductor layer of an organic TFT, there is a problem that the off-current becomes large. This is thought to be because all of the proposed compound forces have bonds in the direction perpendicular to the molecule.
- the intermolecular force is composed of an attractive term and a repulsive term.
- the former is inversely proportional to the 6th power of the intermolecular distance
- the latter is inversely proportional to the 12th power of the intermolecular distance. Therefore, the intermolecular force obtained by adding the attractive and repulsive terms has the relationship shown in Fig. 7.
- the minimum point in Fig. 7 (arrow part in the figure) is the intermolecular distance when the most attractive force acts between the molecules due to the balance between the attractive and repulsive terms.
- the above compound may be chemically adsorbed to the substrate by forming a two-dimensional network of Si ⁇ Si, and there is a possibility that ordering due to intermolecular interaction between specific long-chain alkyls may be obtained.
- Force For example, since only one thiophene molecule, which is a functional group, contributes to the ⁇ -electron conjugated system, the interaction between the molecules is weak and the ⁇ -electron conjugated system, which is indispensable for electrical conductivity, is very wide. There was a problem of being small.
- Non-Patent Document 1 IEEE Electron Device Lett., 18,606-608 (1997)
- Patent Document 1 Japanese Patent No. 2889768
- Patent Document 2 Japanese Patent Publication No. 6-27140
- Patent Document 3 Japanese Patent No. 2507153
- Patent Document 4 Japanese Patent No. 2725587
- the arrangement of the hydrocarbon group part affects the arrangement of the ⁇ -electron conjugated part that dominates the electrical characteristics and the distance between adjacent molecules.
- the hydrocarbon group part aggregates or is relatively randomly arranged to show amorphous properties. If the hydrocarbon group part has an amorphous structure, the molecular mobility of the hydrocarbon group part increases, causing translation, rotation, vibration, etc., so the hydrocarbon group part is directly bonded to the ⁇ electron conjugated system part. Reduce order. As a result, the distance between adjacent molecules is relatively large, and the electrical conductivity of the resulting film is degraded.
- the order of the hydrocarbon group part and the ⁇ -electron conjugated part is improved to some extent, but the ⁇ -electron conjugated part Is affected by the order of the hydrocarbon group part and has only an order corresponding to the order of the hydrocarbon group part.
- the hydrocarbon group parts are more easily aligned, and the arrangement (crystallization) rate of the hydrocarbon group part becomes larger than the arrangement rate of the ⁇ electron conjugated system part.
- the order of the electron conjugated moiety is further dependent on the hydrocarbon group moiety. As a result, the distance between adjacent molecules is relatively large, and the electric conductivity of the resulting film is degraded.
- the introduced substitution It is required that the structure of the ⁇ -electron conjugated part is not disturbed by the group.
- the present invention has been made in view of the above circumstances, and can be easily crystallized by a simple manufacturing method using a solution process to form a thin film, and the obtained thin film is firmly adsorbed to the substrate surface.
- ⁇ -electron conjugated organosilane compound for producing a thin film that prevents physical peeling and has high ordering (crystallinity), high-density packing characteristics, and excellent electrical conductivity characteristics, and a method for producing the same The purpose is to provide.
- Another object of the present invention is to provide a novel ⁇ -electron conjugated organosilane compound that can ensure sufficient carrier mobility when used in a semiconductor electronic device such as TFT, and a method for producing the same. .
- the present invention can also be easily formed by a simple manufacturing method using a solution process, and can be firmly adsorbed on the surface of the substrate to prevent physical peeling, and has high order ( Functional organic thin film with crystalline and dense packing characteristics and method for producing the same The purpose is to provide the law.
- Another object of the present invention is to provide a functional organic thin film that can secure sufficient carrier mobility when used in a semiconductor electronic device such as a TFT, and a method for producing the same.
- the high-density packing characteristic means that the distance between adjacent molecules, particularly the distance between ⁇ -electron conjugated parts, can be made smaller during film formation, resulting in a relatively high density of compound molecules.
- the present invention relates to general formula (I);
- A is a monovalent aliphatic hydrocarbon group having 1 to 30 carbon atoms in which a hydrogen atom may be substituted by a halogen atom; B is an oxygen atom or a sulfur atom; C is a ⁇ -electron conjugate) -3 is a group that gives a hydroxyl group by hydrolysis).
- the present invention also provides a compound of the general formula (III);
- X 4 is a hydrogen atom, a halogen atom or a lower alkoxy group
- the present invention relates to a method for producing the ⁇ -electron conjugated organosilane compound.
- the present invention also relates to a functional organic thin film having a monomolecular film formed using the ⁇ -electron conjugated organic silane compound represented by the general formula (I).
- the silyl group in the ⁇ -electron conjugated organosilane compound represented by the general formula (I) is hydrolyzed and reacted with the substrate surface to form a monomolecular film directly adsorbed on the substrate. Thereafter, the unreacted organosilane compound on the monomolecular film is removed using a non-aqueous organic solvent.
- the present invention relates to a method for producing a functional organic thin film to be removed by washing.
- the ⁇ -electron conjugated organosilane compound of the present invention can expand the direction of bond bonding by bonding an aliphatic hydrocarbon group to a ⁇ -electron conjugated molecule via an ether bond or a thioether bond. . Therefore, the ordering of the ⁇ -electron conjugated system part, which is optimal for carrier transfer without destroying the stable crystal structure of the ⁇ -electron conjugated system part by introducing an aliphatic hydrocarbon group in the film (crystallinity) And high-density packing characteristics can be secured.
- the organosilane compound of the present invention includes Si derived from a silyl group formed between the compound molecules.
- O Si 2D networking enables chemical adsorption to the substrate, and the intermolecular interaction (force to make molecules close to each other) necessary for high crystallization and high packing density works efficiently.
- a thin film having very high stability and highly crystallized and densely packed can be formed. Therefore, carriers move smoothly due to good hopping conduction between compound molecules.
- high conductivity can be obtained in the molecular axis direction. Therefore, the conductive material can be widely applied not only to organic thin film transistor materials but also to devices such as solar cells, fuel cells, and sensors. Furthermore, compared to a film produced by physical adsorption on the substrate, the film can be firmly adsorbed on the substrate surface, and physical peeling can be prevented.
- the organosilane compound of the present invention has an aliphatic hydrocarbon group as a hydrophobic group, it has a relatively high solubility in a non-aqueous solvent. Therefore, for example, when forming a thin film, a solution process which is a relatively simple technique can be applied. In addition, the organosilane compound of the present invention can be easily produced.
- Is a schematic diagram showing the orientation of the compound molecules in a thin film obtained using a conventional ⁇ -electron conjugated organosilane compound ( ⁇ oxygen atom).
- FIG. 2 The terferyl derivative 1 obtained in Synthesis Example 1 and the polyester obtained in Comparative Synthesis Example 1. The surface pressure single molecule occupation area curve of ruphenyl derivative IB is shown.
- FIG. 3 shows surface pressure and molecular area curves of quarterthiophene derivative 2A obtained in Synthesis Example 2 and quarterthiophene derivative 2B obtained in Comparative Synthesis Example 3.
- FIG. 4 is a schematic configuration diagram of an organic thin film transistor produced in an example.
- FIG. 5 is a characteristic diagram of an organic thin film transistor using the quarterthiophene derivative 3A obtained in Synthesis Example 3.
- FIG. 6 is a characteristic diagram of an organic thin film transistor using the quaternion derivative 3B obtained in Comparative Synthesis Example 5.
- the ⁇ -electron conjugated organosilane compound of the present invention has the general formula (I);
- organosilane compound (I) an organosilane compound (I).
- A is a monovalent aliphatic hydrocarbon group having 1 to 30 carbon atoms.
- the aliphatic hydrocarbon group A is linear or branched, and has the power of ordering the membrane and high packing density, and is preferably linear.
- the hydrogen atom may be substituted by a halogen atom, for example, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, preferably a fluorine atom.
- a halogen atom for example, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, preferably a fluorine atom.
- the aliphatic hydrocarbon group A may be unsaturated or saturated, and is preferably a saturated aliphatic hydrocarbon group.
- the aliphatic hydrocarbon group A is an alkyl group having the above carbon number.
- Preferable examples include, for example, methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl group, heptyl group, octyl group, nonyl group, decyl group, undecyl group, dodecyl group, tridecyl group, tetradecyl group.
- B is an oxygen atom or a sulfur atom.
- the order of the hydrocarbon group A is organic group C. Adversely affects the ordering of the organic group, and the distance between adjacent molecules in the arrangement structure of the organic group C can be further reduced, so that the knocking property is improved and the disturbance in the structure can be suppressed.
- the hydrocarbon group A when the hydrocarbon group A has 1 to 15 carbon atoms (1 to 12 when the hydrocarbon group A is substituted with a halogen atom), the hydrocarbon group A aggregates, Even if they are arranged randomly, the distance between adjacent molecules in the arrangement structure of the organic group C can be further reduced, so that high-density packing is improved and disorder in the structure can be suppressed.
- the bond angle ( ⁇ ) of the organic group C to the hydrocarbon group A is relatively small as shown in FIG. Since it is small, the arrangement of organic groups C is susceptible to the arrangement of hydrocarbon groups. As a result, since the distance between adjacent molecules in the arrangement structure of the organic group C is relatively large, the high-density packing property is lowered, and disorder in the structure is likely to occur.
- C is not particularly limited as long as C is a divalent organic group exhibiting ⁇ -electron conjugation, that is, two molecules from a molecule containing a skeleton exhibiting ⁇ -electron conjugation ( ⁇ -electron conjugated skeleton). This is the residue after removing the hydrogen atom.
- a ⁇ -electron conjugate is formed by one ⁇ bond and one ⁇ bond. This means that the ⁇ electron that controls the ⁇ bond is delocalized.
- the molecules that delocalize ⁇ electrons become larger, the distance traveled by ⁇ electrons increases, so that the electrical conductivity of the resulting thin film improves, and when used in semiconductor electronic devices such as TFTs. Carrier mobility is improved.
- Such an organic group C has a monocyclic aromatic ring unit, a condensed aromatic ring unit, a monocyclic aromatic heterocyclic unit, a condensed aromatic heterocyclic unit, and an unsaturated aliphatic unit.
- the group power is also composed of one or more units, which may be linear or branched. In view of the order of the membrane and the high density knocking property, the organic group C is preferably linear.
- each unit described above the force described below is specifically limited in the bonding position of each unit, that is, the bonding position of the other unit, the ⁇ group or the silyl group (one Si x ⁇ 3 ). It is not something.
- the unit is a monocyclic aromatic hetero 5-membered ring unit, it can be in the 2,5-position, 3,4-position, 2,3-position, 2,4-position, etc. Of these, the 2-5-position is preferred from the standpoint of further improving the order of the membrane and the high-density knocking.
- the unit is a monocyclic aromatic ring unit or a monocyclic aromatic heterocyclic unit and is a 6-membered ring
- the 1,4-position, 1,2-position, 1,3-position Among them, the 1st and 4th positions are preferable from the viewpoint of further improving the ordering of the film and the high density knocking property.
- the above-mentioned value indicating the bonding position is based on the heteroatom when the ring has one heteroatom, and the heteroatom with the highest molecular weight when the ring has two or more heteroatoms. When the ring does not have a heteroatom, the value is based on any carbon atom.
- the line connecting the two bonding positions is the center point of point symmetry It is preferable that the coupling position passes through.
- the line connecting the two bonding positions is the center line of the line symmetry reference. It is preferable that the coupling position pass through the midpoint.
- monocyclic aromatic ring unit examples include benzene.
- condensed aromatic ring unit examples include, for example, the general formula ( ⁇ );
- acene series compounds include phen series compounds, peri-fused compounds, azulene, fluorene, anthraquinone, and acenaphthylene.
- acene series compounds include naphthalene, anthracene, naphthacene, pyrene, and pentacene.
- phen series compounds include phenanthrene and benzo [a] anthracene.
- peri-fused compounds include perylene.
- Preferred condensed aromatic ring units are acene series compounds.
- monocyclic aromatic heterocyclic unit include the following units.
- Y is a heteroatom that is commonly represented by Group 4A and Group 4B elements
- Si, Ge, Sn, and T are Zr.
- Y is a heteroatom commonly represented by a group 5 element, such as ⁇ and ⁇ .
- ⁇ is a heteroatom that is commonly represented by a group 6 element, for example, 0, S, Se or Te
- Preferred examples of the monocyclic aromatic heterocyclic unit include, for example, thiophene and furan. Pyrrole, oxazole, imidazole, silole, selenophene, pyridine, pyrimidine and the like. A particularly preferred monocyclic aromatic heterocyclic unit is thiophene.
- the condensed aromatic heterocyclic unit includes a condensed compound of the monocyclic aromatic heterocyclic units, and a condensed compound of the monocyclic aromatic heterocyclic unit and the monocyclic aromatic unit. It is. Specific examples of the condensed aromatic heterocyclic unit include benzothiophene and benzoxazine.
- Examples of the unsaturated aliphatic unit include alkenes, alkadienes, and alkatrienes.
- Alkenes having 2 to 4 carbon atoms are preferred, for example, ethylene, propylene, butene and the like.
- Preferred examples of alkadienes having 4 to 6 carbon atoms include butadiene, pentagen, hexagen and the like.
- Alkatrienes having 6 to 8 carbon atoms are preferred, for example, hexatriene, heptatriene, otatriene and the like.
- Each of the above units forms a divalent group in which two hydrogen atoms are removed and is linearly bonded to form an organic group C when the organic group C is linear.
- the organic group C is branched and the unit is the branching point of the branched organic group C, it becomes a trivalent or higher group from which three or more hydrogen atoms are removed. Configure group C.
- the organic group C is selected from the group consisting of a monocyclic aromatic ring unit, a condensed aromatic ring unit, and a monocyclic aromatic heterocyclic unit from the viewpoint of the interaction of the organic group C itself. It is preferable to be composed of more units.
- the organic group C preferably includes a condensed aromatic ring unit, a monocyclic aromatic complex 5-membered ring unit, or a condensed aromatic heterocyclic unit. These units are 5-membered rings or condensed rings, and the symmetry of the molecule is easily lost. Therefore, when the hydrocarbon group A is introduced directly into the organic group C as in the conventional case, the arrangement structure of the organic group C in the thin film.
- the high-density knocking property and the arrangement disorder are more likely to occur, in the present invention, even if the organic group C contains such a unit, the introduction of an ether bond or a ether bond is effective. This is because it is possible to effectively prevent a decrease in high-density packing and an array disorder.
- the number of units constituting the organic group C is not particularly limited, but from the viewpoint of yield. 1 to 30, especially 1 to: LO is preferred. From the viewpoint of economy and mass production, 1 to 8 is preferable.
- V or some or all units may be different.
- the organic group C is composed of a plurality of types of units
- the plurality of types of units may be arranged and bonded in a regular repeating unit, or may be randomly arranged and bonded. Also good.
- the organic group C may have a substituent as long as the order (crystallinity) and high-density packing characteristics of the obtained film are not inhibited.
- a substituent include a hydroxyl group, an alkyl group, an alkenyl group, an aralkyl group, and a carboxyl group. These substituents may be substituted with a halogen atom such as a fluorine atom, a chlorine atom, a bromine atom or an iodine atom.
- the alkyl group preferably has 1 to 3 carbon atoms, and examples thereof include a methyl group, an ethyl group, and a propyl group.
- the alkenyl group preferably has 2 to 3 carbon atoms, and examples thereof include a vinyl group and a allyl group.
- the aralkyl group preferably has 7 to 8 carbon atoms, and examples thereof include a benzyl group and a phenethyl group.
- ⁇ 3 represents a group providing a hydroxy group by hydrolysis.
- the group that gives a hydroxyl group by hydrolysis is not particularly limited, and examples thereof include a halogen atom or a lower alkoxy group.
- halogen atoms include fluorine, chlorine, iodine and bromine atoms.
- the lower alkoxy group include an alkoxy group having 1 to 4 carbon atoms.
- Examples include methoxy group, ethoxy group, n-propoxy group, 2-propoxy group, n-butoxy group, sec-butoxy group, tert-butoxy group, etc., some of which are further functional groups (trialkyl) It may be substituted with a silyl group or other alkoxy group.
- X 1 , X 2 and X 3 may be the same or a part or all of them may be different, but it is preferable that all are the same.
- the organosilane compound (I) is represented by the following general formula (I) from the viewpoint of improving the high-density packing property.
- a a is a monovalent aliphatic hydrocarbon group in which a hydrogen atom may be substituted by a halogen atom, and when it is not substituted by a halogen atom, it has 1 to 15 carbon atoms, preferably 1 to: a group of L0, and when substituted by a halogen atom, a group having 1 to 12 carbon atoms; specifically, A a is a value other than the value within the above range depending on the presence or absence of a halogen atom
- B, C and Xi X 3 are the same as in formula (I)).
- a b is a monovalent aliphatic hydrocarbon group in which a hydrogen atom may be substituted by a halogen atom, and when it is not substituted by a halogen atom, has 16 to 30 carbon atoms, preferably is a group of 16 to 24, 13 to 25 carbon atoms when substituted by halogen atoms, preferably is a group of 13 to 20; carbon atoms details a b is Te cowpea to the presence or absence of halogen atoms Except that the value is within the above range, it is the same as A in the general formula (I); B, C, and e to 3 are the same as those in the general formula (I)).
- organosilane compound (I) as described above include, for example, compounds represented by the following general formulas (1) to (14).
- A, B and Xi X 3 are the same as in formula (I).
- R is a hydrogen atom, a hydroxyl group, an alkyl group having 1 to 3 carbon atoms, an alkyl group having 2 to 3 carbon atoms, an aralkyl group having 7 to 8 carbon atoms, or a carboxyl group, preferably a hydrogen atom or carbon It is an alkyl group of the number 1 to 3.
- these Rs may be selected independently from the above-mentioned range of forces.
- Y 1 is N, O, S, Si, Ge, Se, Te, P, Sn, T, or Zr, preferably S. Specifically, when Y 1 is Si, Ge, Sn, Ti, Zr, one Y 1 (R 1 ) ⁇ , ⁇ 1 is ⁇ , ⁇
- Y 1 When — Y ⁇ R 1 ) —, when Y 1 is O, S, Se, Te, it is — Y 1 —.
- R 1 is a hydrogen atom, a methyl group, an ethyl group, an n propyl group, a 2-propyl group, an n butyl group, a sec butyl group, a tert butyl group, or a phenyl group, preferably a hydrogen atom or a methyl group.
- nl is an integer of 1 to 30, preferably 1 to 8.
- Y 2 is O, S, Se or Te, preferably S.
- Y 2 is O, S, Se, or Te, it is —Y 1 —.
- nl is an integer of 1 to 30, preferably 1 to 8.
- R 1 is the same as in formula (1), preferably a hydrogen atom or a methyl group.
- nl is an integer of 1 to 30, preferably 1 to 8.
- Y 4 and Y 5 are each independently C, Si, Ge, Sn, T, or Zr.
- nl Preferably Si or Ge (except when Y 4 and Y 5 are C at the same time).
- Y 6 to Y 8 are each independently S, ⁇ , ⁇ , Si, Ge, Se, Te, P, Sn, Ti, or Zr (provided that Y 6 to Y Except when 8 are the same atom). Specifically, when Y 6 is C, Si, G e, Sn, Ti, Zr, it is 1 ⁇ 6 ( ⁇ ⁇ ) ⁇ , and when 6 6 is ⁇ , ⁇ , it is 1 ⁇ 6 ( ⁇ ⁇ ) — 6 is S
- R 1 is the same as in formula (1), preferably a hydrogen atom or a methyl group.
- Detailed Y 7 and Y 8 shall conform to the detailed Y 6 above.
- n2 + n3 + n4 is an integer from 3 to 30. However, n2 is 1 or more, n3 is 1 or more, and n4 is 1 or more.
- Y 1C> is N, O, S, Si, Ge, Se, Te, P, Sn, Ti, or Zr. Specifically, when Y 10 is Si, Ge, Sn, Ti, Zr, one Y 10 ⁇ 1 ) ⁇ , when Y 10 is N, P, one Y ⁇ R 1
- R 1 is the same as in formula (1), preferably a hydrogen atom or a methyl group.
- R 1 is the same as in formula (1), preferably a hydrogen atom or a methyl group. Details 1 shall follow Y 9 above.
- ⁇ 2 + ⁇ 3 + ⁇ 4 is an integer from 3 to 30. However, ⁇ 2 is 1 or more, ⁇ 3 is 1 or more, and ⁇ 4 is 1 or more.
- Y 12 to Y 13 are each independently S, ⁇ , ⁇ , Si, Ge, Se, Te, P, Sn, T, or Zr. Specifically, when Y 12 is Si, Ge, Sn, Ti, Zr — — 12 ( ⁇ ⁇ ) ⁇ , ⁇ 12 is
- R 1 is the same as in formula (1), preferably a hydrogen atom or a methyl group.
- Detailed Upsilon 13 shall conform to the more, Upsilon 12.
- ⁇ 5 + ⁇ 6 is an integer of 2 to 30, preferably 2 to 8. However, ⁇ 5 is 1 or more and ⁇ 6 is 1 or more.
- ⁇ 14 is S, ⁇ , ⁇ , Si, Ge, Se, Te, P, Sn, Ti, or Zr. Specifically, when Y 14 is Si, Ge, Sn, Ti, Zr, it is 1 Y ⁇ R 1 ) ⁇ , and when Y ”is N, P, it is 1 ⁇ 14 ( ⁇ ⁇ ⁇
- R 1 is the same as in formula (1), preferably a hydrogen atom or a methyl group.
- R 1 is the same as in formula (1), preferably a hydrogen atom or a methyl group.
- n5 + n6 is an integer of 2 to 30, preferably 2 to 8. However, n5 is 1 or more and n6 is 1 or more.
- Y 16 is S, N, O, Si, Ge, Se, Te, P, Sn, Ti, or Zr.
- Y 16 forces i, Ge, Sn, Ti, one when the Zr ⁇ 16 ( ⁇ ⁇ ) - , Y 16 is N, when the P one ⁇ 16 ( ⁇ ⁇ ⁇
- R 1 is the same as in formula (1), preferably a hydrogen atom or a methyl group.
- R 1 is the same as in formula (1), preferably a hydrogen atom or a methyl group.
- n5 + n6 is an integer of 2 to 30, preferably 2 to 8. However, n5 is 1 or more and n6 is 1 or more.
- Y 18 to Y 19 are each independently S, ⁇ , ⁇ , Si, Ge, Se, Te, P, Sn, T, or Zr. Specifically, when Y 18 is Si, Ge, Sn, Ti, Zr — ⁇ 18 ( ⁇ ⁇ ) ⁇ , Y 18
- R 1 is the same as in formula (1), preferably a hydrogen atom or a methyl group. Details V and Y 19 shall conform to the details U and IV- 18 above.
- ⁇ 5 + ⁇ 6 is an integer of 2 to 30, preferably 2 to 8. However, ⁇ 5 is 1 or more and ⁇ 6 is 1 or more.
- ⁇ 20 is S, ⁇ , ⁇ , Si, Ge, Se, Te, P, Sn, Ti or Zr. Specifically, when Y 20 is Si, Ge, Sn, Ti, Zr, one Y ⁇ R 1 ) —, when Y 20 is N, P, one Y 20 (
- R 1 ) — and when ⁇ ⁇ is S, O, Se, Te, it is — ⁇ ⁇ .
- R 1 is the same as in formula (1), preferably a hydrogen atom or a methyl group.
- R 1 is the same as in formula (1), preferably a hydrogen atom or a methyl group.
- n5 + n6 is an integer of 2 to 30, preferably 2 to 8. However, n5 is 1 or more and n6 is 1 or more.
- n7 is an integer of 1 to 28, preferably 1 to 8.
- a hydroxyl group is previously introduced into a predetermined site of a ⁇ -electron conjugated skeleton-containing molecule, and the hydroxyl compound is converted into a predetermined 1 in the presence of sodium hydroxide, pure water or the like.
- a monohalogenalkane or sulfonic acid alkyl ester containing a valent aliphatic hydrocarbon group ⁇ By reacting with a monohalogenalkane or sulfonic acid alkyl ester containing a valent aliphatic hydrocarbon group ⁇ , the resulting ⁇ -electron conjugated skeleton-containing molecule is converted to a monovalent aliphatic hydrocarbon group ⁇ via an ether bond.
- n -chlorosuccinimide, black mouth form, and acetic acid solution dissolve ⁇ - electron conjugated skeleton-containing molecules and react. Then, the terminal hydrogen is closed, and the solution in the flask is stirred under a nitrogen atmosphere to obtain a ⁇ -electron conjugated skeleton-containing molecule.
- the chloro compound is dissolved in sodium carbonate, sodium hydroxide, tetrahydrofuran (THF) and mixed with excess pure water. This solution is reacted at 100 to 110 ° C to hydrolyze the chromized end.
- THF tetrahydrofuran
- the thioether can be carried out in the same manner as the ethereal reaction described above. It is synthesized by alkylating alkyl thiol in the presence of a hydroxide ion base such as sodium hydroxide.
- the base generates an alkanethiolate ion that reacts with the haloalkane.
- ⁇ -electron conjugated skeleton-containing molecules are dissolved in n-chlorosuccinimide, chloroform, and acetic acid solutions and reacted to form a terminal hydrogen atom, and in a nitrogen atmosphere in a flask.
- the solution placed in is stirred to obtain a black mouth compound of a ⁇ -electron conjugated skeleton-containing molecule.
- the chloro compound is dissolved in alkanethiol, sodium carbonate, sodium hydroxide, tetrahydrofuran (THF). By reacting this solution at 110 ° C, the cleavable terminal can be thioetherized.
- X 4 is a hydrogen atom, a halogen atom (for example, fluorine, chlorine, iodine or bromine atom) or a lower alkoxy group ( For example, methoxy group, ethoxy group, n-propoxy group, 2-propoxy group, n-butoxy group, sec-butoxy group, tert-butoxy group, etc.)) Introduce silyl group.
- a halogen atom for example, fluorine, chlorine, iodine or bromine atom
- a lower alkoxy group For example, methoxy group, ethoxy group, n-propoxy group, 2-propoxy group, n-butoxy group, sec-butoxy group, tert-butoxy group, etc.
- the organosilane compound (I) obtained as described above is obtained by a known solution such as transfer dissolution, concentration, solvent extraction, fractional distillation, crystallization, recrystallization, chromatography and the like. And can be purified.
- the ⁇ -electron conjugated skeleton-containing molecule of the general formula (III) used in the synthesis of the organosilane compound (I) of the present invention may be obtained as a commercial product, or known as described below. It may be synthesized by the method of ⁇ .
- Method (1) As a synthesis method of the acene skeleton-containing molecule, for example, method (1); after substituting a hydrogen atom bonded to two carbon atoms at a predetermined position of the raw material compound with an ethynyl group, the process is repeated by ring-closing reaction between the etul groups.
- Method, Method (2) A method in which a hydrogen atom bonded to a carbon atom at a predetermined position of a raw material compound is substituted with a triflate group, reacted with furan or a derivative thereof, and subsequently oxidized is repeated.
- An example of the synthesis method of the acene skeleton using these methods is shown below. [0086] [Chemical 10] Method (
- n 1 -7
- the method (2) is a method of increasing the benzene ring of the acene skeleton one by one, for example, a predetermined part of the raw material compound includes a low-reactivity functional group or protecting group.
- the acene skeleton can be synthesized similarly. An example of this case is shown below.
- Ra Rb is preferably a functional group having a low reactivity such as a hydrocarbon group or an ether group, or a protective group.
- reaction formula of the above method (2) there are two acetonitrile groups and trimethylsilyl groups.
- the starting compound may be changed to a compound in which these groups are all trimethylsilyl groups.
- the reaction product is refluxed under lithium iodide and DBU (1, 8-diazabicyclo [5.4.0] undec-7-ene). A compound having one benzene ring and two hydroxyl groups substituted from the starting compound can be obtained.
- a naphthenene skeleton-containing molecule and a perylene skeleton-containing molecule can also be synthesized according to the method (1) for producing the acene skeleton (method (3)).
- Method (3) An example of the production method will be described below.
- a thiophene skeleton containing molecule is shown. However, if a method similar to that for a thiophene skeleton-containing molecule is used, a heterocyclic skeleton-containing molecule containing 0 and ⁇ can also be synthesized.
- a method for synthesizing a thiophene skeleton-containing molecule it is effective to first use a Grignard reaction after the reaction site of thiophene is halogenated. Using this method, the number of thiophene rings can be controlled. In addition to the method of applying the Grignard reagent, it can also be synthesized by coupling using an appropriate metal catalyst (Cu, Al, Zn, Zr, Sn, etc.). [0094] Further, for the thiophene skeleton-containing molecule, the following synthesis method can be used in addition to the method using the Grignard reagent.
- thiophene is halogenated (eg, blackened) at the 2nd or 5th position.
- Methods for halogenation include, for example, treatment with 1 equivalent of N-chlorosuccinimide (NCS) treatment or phosphorous oxvchloride (POC1) treatment.
- halogenated thiophenes can be catalyzed by tris (triphenylphosphine) nickel ((PPh) Ni) in DMF solvent.
- the thiophenes can be directly bonded to each other at the resulting halogenated portion.
- divinylsulfone is added to the halogenated thiophene and coupled to form a 1,4-diketone body. Subsequently, Lawesson Regent (LR) or PS is added to the dry toluene solution.
- LR Lawesson Regent
- a method for synthesizing a thiophene skeleton-containing molecule is shown below.
- a thiophene skeleton-containing molecule other than the 4, 6 or heptamer can be formed.
- a 2-chlorothiophene can be formed by reacting 2-chlorothiophene with 2-chlorothiophene and then 2-chloromouth bithiophene chloroiminated with NCS.
- thiophene tetramer is chromized by NCS
- thiophene 8 or 9 mer can also be formed.
- monocyclic heterocycle (selenophene ring, silole ring) unit The number of the above is determined by halogenating a predetermined portion of the compound containing the heterocyclic unit prepared in advance as a starting material, and repeating the operation of performing the Grignard reaction using the obtained halogen compound and the unit-containing Grignard reagent. It can be controlled.
- the above method shows a reaction for synthesizing a dimer or trimer from a monomer of selenophene. Since this method can increase the number of selenophene rings one by one, it is possible to synthesize a tetramer or more selenophene skeleton-containing molecule by repeating the same reaction.
- the selenophene skeleton-containing molecule and silole skeleton-containing molecule use an appropriate metal catalyst (Cu, Al, Zn, Zr, Sn, etc.) in addition to the method of applying the dariyar reagent as described above. Can be synthesized by controlling the number of monocyclic heterocyclic units.
- a heterocyclic skeleton-containing molecule containing N, Si, Ge, P, Sn, Ti, or Zr can also be synthesized.
- a method for synthesizing a benzene skeleton-containing molecule it is effective to first use a Grignard reaction after halogenating the reaction site of benzene. If this method is used, the number of benzene rings can be controlled. In addition to the method using a Grignard reagent, the synthesis can also be performed by coupling using an appropriate metal catalyst (Cu, Al, Zn, Zr, Sn, etc.).
- a method for synthesizing a benzene skeleton-containing molecule is shown below.
- the reaction from a trimer of benzene to a (3 + m) mer was shown.
- a benzene skeleton-containing molecule other than the tetramer to 7mer can be formed.
- the coupling method include a method using Suzuki coupling and a method using Grignard reaction.
- n-BuLi, B (0-iPr) is imparted to the compound having a silole ring. Debrominated and boronated. The solvent at this time is
- the reaction in the case of boronation is a two-step process.
- the first step is performed at -78 ° C, and the second step is gradually performed from -78 ° C to room temperature. Is preferably increased.
- a simple thiophene compound having a halogen group (for example, bromo group) at the terminal and the above boronated compound are developed in, for example, a toluene solvent, and in the presence of Pd (PPh) and Na 2 CO 3.
- the monocyclic heterocyclic compounds containing S, N, O, Ge, Se, Te, P, Sn, Ti, Zr as force heteroatoms described for the case of using a compound having a silole ring are also described in the following.
- the 5-position reactivity is the same as silole. Therefore, by the same synthesis method as described above, a thiophene-derived compound is obtained at both ends of a monocyclic heterocyclic compound containing S, N, O, Ge, Se, Te, P, Sn, Ti, Zr as heteroatoms.
- Each unit can be combined.
- the unit portion derived from thiophene contains the N, O, Si, Ge, Se, Te, P, Sn, Ti, Zr as heteroatoms. Even a unit derived from a monocyclic hetero 5-membered ring compound does not work.
- Si.Ge.P.Sn.Ti.Zr used to synthesize organosilane compounds.
- Block-type ⁇ -electron conjugated skeleton-containing molecule capable of deriving the organosilane compound of the general formula (6) (In the compound of the general formula (6), the silyl group and the ⁇ -B- group are substituted with H. Can be synthesized by the same method as the block type ⁇ -electron symbiotic skeleton-containing molecule capable of deriving the organosilane compound of the general formula (5).
- the reaction in the case of boronation is a two-step process.
- the first step is performed at -78 ° C, and the second step is gradually performed from -78 ° C to room temperature. Is preferably increased.
- a simple benzene compound having a halogen group (for example, bromo group) at the terminal and the above boronated compound are developed in, for example, a toluene solvent, and in the presence of Pd (PPh), Na 2 CO, 85 ° Reaction at C reaction temperature If it is completely advanced, it is possible to cause coupling.
- Pd Pd
- Na 2 CO 85 ° Reaction at C reaction temperature
- the monocyclic heterocyclic compounds containing S, N, O, Ge, Se, Te, P, Sn, Ti, Zr as force heteroatoms described for the case of using a compound having a silole ring are also described in the following.
- the 5-position reactivity is the same as silole. Therefore, by the same synthesis method as described above, a monocyclic heterocyclic compound containing S, N, O, Ge, Se, Te, P, Sn, Ti, Zr as heteroatoms is derived from benzene at both ends.
- Each unit can be combined.
- the force explained when benzene-derived units are combined Monocyclic heterocycles containing N, Si, Ge, P, Sn, Ti, Zr as heteroatoms
- the unit may be derived from a ring compound.
- the organic thin film of the present invention has a monomolecular film formed using an organosilane compound (I), and preferably has the monomolecular film on a substrate.
- the organosilane compound (I) has a hydrocarbon group A via an ether bond or a thioether bond, and is bonded to the substrate via a chemical bond (particularly a silanol bond (one Si—O—)) via a silyl group. Adsorption (bonding) is possible. Therefore, in the monomolecular film having the organosilane compound (I) force, the organosilane compound (I) molecule is composed of a hydrocarbon group A as shown in FIG. Arrange so that the silyl group is located on the substrate side and the hydrocarbon A group is located on the film surface side.
- Such a monomolecular film has the high packing density and high ordering (crystallinity) and excellent peeling resistance of the compound molecule, and can be formed by a simple method using a solution process. Become. Moreover, the organosilane compound (I) is obtained because it contains an organic group C that exhibits ⁇ -electron conjugation. Monomolecular films have excellent electrical characteristics such as carrier mobility when used as an organic layer (thin film) in organic devices such as organic thin film transistors, organic photoelectric conversion elements, and organic electroluminescence elements.
- an elemental semiconductor such as silicon or germanium, a compound semiconductor material such as gallium arsenide or gallium selenium, or a polymer material such as quartz glass, polyethylene, polyethylene terephthalate, or polytetrafluoroethylene is used.
- the substrate may be made of an inorganic material used as an electrode of a semiconductor device, or a film made of an organic material may be formed on the surface of the substrate.
- the substrate surface has a hydrophilic group such as a hydroxyl group or a force lpoxyl group, in particular, a hydroxyl group.
- the substrate surface is subjected to a hydrophilization treatment to impart a hydrophilic group to the substrate surface. do it.
- the hydrophilization treatment of the substrate can be performed by immersion in a hydrogen peroxide solution / sulfuric acid mixed solution, irradiation with ultraviolet light, or the like.
- the silyl group of the organosilane compound (I) is hydrolyzed and reacted with the substrate surface to form a monomolecular film that is directly adsorbed (bonded) to the substrate.
- LB method Liuir Blodget method
- a dating method a coating method, or the like
- a coating method or the like
- the organosilane compound (I) is dissolved in a non-aqueous organic solvent, and the obtained solution is dropped on the water surface whose pH is adjusted, and a thin film is formed on the water surface. Form. This and come, 3 groups - in the silyl group of the organic Shirani ⁇ compound (I) is converted into a hydroxyl group by hydrolysis.
- the organic silane compound (I) is dissolved in a non-aqueous organic solvent, and a substrate having a hydrophilic group (particularly a hydroxyl group) on the surface is immersed in the obtained solution. Pull up. Alternatively, the resulting solution is coated on the substrate surface. At this time, the traces of water in the non-aqueous organic solvent, x 3 groups in the silyl groups of the organic Shirani ⁇ compound (I) is hydrolyzed and converted to a hydroxyl group. Then by holding for a predetermined time
- the silyl group in the organosilane compound (I) reacts with the substrate to form a chemical bond (particularly a silanol bond), and a monomolecular film as shown in FIG. 1 (A) is obtained. If ⁇ 3 groups are not hydrolyzed, a small amount of water with adjusted pH may be mixed in the solution.
- the non-aqueous organic solvent is not particularly limited as long as it is incompatible with water and can dissolve the organosilane compound (I), and examples thereof include hexane, chloroform, carbon tetrachloride, and the like. It can be used.
- the unreacted organosilane compound is usually washed away from the monomolecular film using a non-aqueous organic solvent. Furthermore, it is washed with water and left to stand or dried by heating.
- the A group of the general formula (I) can function as a protective film that protects a molecular part other than the A group.
- the uppermost layer in the monomolecular film that is, the layered portion in which the aliphatic hydrocarbon group represented by A in the formula (I) is arranged) prevents acidification and photodegradation in the lower portion of the layer. It can function as a protective film.
- the group A can be crystallized by the intermolecular interaction, it is superior to the amorphous material in terms of gas permeability.
- the obtained organic thin film may be used directly as an electric material, or may be used after further treatment such as electrolytic polymerization.
- the organosilane compound (I) of the present invention the organic thin film is formed into a Si-O-Si network as shown in Fig. 1 (A), and the distance between adjacent molecules is reduced and highly ordered. Crystallized.
- organosilane compound the functional organic thin film, and the production method thereof of the present invention will be described more specifically with reference to examples.
- the synthetic route 1 was followed using commercially available terphenyl.
- Terfal (cas No: 92-94-4; manufactured by Tokyo Chemical Industry Co., Ltd.) was dissolved in n-chlorosuccinimide, chloroform, and acetic acid solution, and terminal hydrogen was capped. Under a nitrogen atmosphere, the solution in the flask was stirred to obtain 4-black-mouthed terferol. 4-Black mouthwater was dissolved in sodium carbonate, sodium hydroxide, tetrahydrofuran (THF) and mixed with excess pure water. By reacting this solution at 100 ° C, the chloroi end was hydroxylated. 4-Hydroxyl terphel was mixed with n-octyl bromide (111-25-1), sodium hydroxide, THF, and pure water and reacted, and the hydroxyl group was etherified by Williamson synthesis.
- 4-Otoxymonoterphenyl was cleaved in the same manner as in the above reaction.
- the product was terminally triethoxysilylated using a Grignard reaction.
- the target product obtained by triethoxysilylation is extracted with black mouth form. After drying with magnesium sulfate and removing the solvent, recrystallization was performed with a methanol solvent.
- the product was further purified on silica gel in a chloroform solvent.
- the synthesis method is the same as the method of Synthesis Example 1 except that the Williamson synthesis method is omitted and the Grignard reaction is used.
- the orientation angles of the bond between the terfel skeleton and the octyl group were 161 degrees and 140 degrees, respectively. It was confirmed that the orientation angle of the bond can be increased through an ether bond, and thereby the orientation direction of the octyl group in the film state can be expanded.
- each monomolecular film was formed by the Langmuir-Projet (LB) method.
- LB Langmuir-Projet
- Figure 2 shows the measurement results of the area occupied by the surface pressure per molecule when the pH of the lower layer water is 2.
- the molecular occupation area for which the tilting force is also estimated was 0.34 nm 2 -m ⁇ 1 for terfel derivative 1 A, whereas 0.4711111 2 '11101 _ 1 and terfel for terfel derivative 1B
- the value was about 0. lSnm ⁇ mor 1 larger than that of the derivative 1 ⁇ .
- the molecular volume decreased.
- those having an octyl group bonded through an ether bond are able to reduce the distance between adjacent molecules in the monomolecular film.
- X-ray diffraction measurement of each prepared monomolecular film was performed using a symmetric reflection method.
- clear diffractions of 454 nm, 0.386 nm and 0.309 nm were observed in the monomolecular film of the terfel derivative 1A, whereas it was 0 in the monomolecular film of the terfel derivative 1B.
- Broad diffraction at 457 nm and 0.386 nm was observed. Since the diffraction intensity depends on the ratio of the corresponding interplanar spacing, it can be seen that the periodic structure is regularly formed in the monomolecular film of the terphenyl derivative 1A.
- the structural stability of monolayers of the terphenyl derivatives 1A and 1C was evaluated from electrical measurements.
- the film preparation of the terphinyl derivative 1C was performed in the same manner as in Example 2. Measurement was carried out by measuring photoconductivity.
- a monomolecular film was prepared in the same manner as in Example 2 on a comb-shaped electrode having a width of 200 ⁇ m prepared by sputtering 30 nm and 20 nm of gold Z chromium.
- the voltage-current characteristics were evaluated when a 500 W Xe lamp was irradiated (bright) and not irradiated (dark), and the current value when 50 V was applied was measured.
- the light and dark currents measured immediately after preparation of the films were 24 nA (bright current) and 140 pA (dark current) for both the terfuryl derivatives 1A and 1C.
- the force was 21 nA (bright current) for terfel derivative 1A and 320 pA (dark current).
- the difference in the magnitude of these bright currents is thought to be influenced by the acidity of the terfel skeleton in the atmosphere.
- the terpheel derivative 1A having an octyl group as a protecting group is not easily affected by deterioration of properties.
- films were prepared by the different film forming methods shown below.
- the adhesion was evaluated for the monomolecular film of terphenyl derivative 1A prepared by the same method as in Example 2 and the film of terphenyl derivative 1C prepared by vapor deposition with a film thickness of about lOnm.
- the membrane was cut into a 10 m square grid with a cross cutter, then a commercially available force pton tape was applied and peeled off, and the shape of the membrane was evaluated by AFM.
- Terphenyl derivative 1A film shape remains the same as before Kapton tape treatment, confirming domain formation
- the domains observed before treatment were not observed. This is thought to be because the film was peeled off by the Kapton treatment. Accordingly, it can be said that the adhesion strength of the terphenyl derivative 1 A film is improved. Since the phenyl derivative 1A is used in the form of a solution and the hydrolysis reaction of the triethoxysilyl group proceeds, the reaction with the hydroxyl group on the substrate surface proceeds to form a film. This is probably because silanol bonds are more effectively formed between the substrate and the substrate.
- N-chlorosuccinimide (NCS) treatment was performed using DMF as a solvent.
- the resulting black mouth bitifen was reacted with tris (trip henylphosphine) Nickel ((PPh) Ni) as a catalyst in a DMF solvent.
- Quarterthiophene was synthesized by directly bonding the biothiophenes to each other.
- Hexylthio quarterthiophene was chlorinated in the same manner as the reaction shown in Synthesis Example 1.
- the product was terminally trichlorosilylated by a Grignard reaction. Trichrome mouth
- the desired product is extracted with black mouth form. After drying with magnesium sulfate to remove the solvent, recrystallization was performed with a methanol solvent.
- the product was further purified on silica gel in a chloroform solvent.
- the synthesis method is the same as the method of Synthesis Example 2, except that hexylthioi is omitted and a hexyl group coupling reaction is performed using a Grignard reagent.
- FIG. 1 shows the measurement results of the surface pressure and the area occupied by molecules when the pH of the lower layer water is 2.
- Molecular area that is estimated from the slope Quarter Chiofen derivative 2A is' than 11101 _1 0. ⁇ ⁇ '0. 2811111 2 quarterback Chio Fen derivative 2B ⁇ 1 small, was 0.2211111 2' 11101 _1 .
- Those having a hexyl group bonded through a thioether bond were able to reduce the area occupied by molecules in the film surface.
- the angle of bonding between the aliphatic hydrocarbon group A and the organic group C is expanded by introducing a chain bond by an approach from molecular simulation and crystal structure analysis.
- the film structure forms an optimum structure for the ⁇ -electron conjugated system.
- quarterthiophene derivative 2C represented by general formula (2C) (hereinafter referred to as quarterthiophene derivative 2C)
- the structural stability of the quarterthiophene derivatives 2A and 2C monolayers was evaluated from electrical measurements.
- the quarterthiophene derivative 2C monomolecular film was prepared in the same manner as in Example 2.
- the measurement performed photoconductivity measurement.
- a monomolecular film was prepared in the same manner as in Example 2 on a comb-shaped electrode having a width of 200 ⁇ m prepared by gold and chromium chrome 30 and 20 nm, respectively.
- the voltage-current characteristics when a 500 W Xe lamp was irradiated (bright) and not irradiated (dark) were evaluated, and the current value when 50 V was applied was measured.
- the bright and dark currents measured immediately after the preparation of the films were 48 nA (bright current) and 330 pA (dark current) for both quarterthiophene derivatives 2A and 2C.
- the prepared membrane was stored in the atmosphere for 45 days and measured again, it was 44 nA (bright current) and 380 pA (dark current) for the quarterthiophene derivative 2A, but ⁇ (bright for the quarterthiophene derivative 2C).
- Current and 490 pA (dark current).
- the difference in the magnitude of these bright currents is thought to have been affected by the oxidation of the quarterthiophene skeleton in the atmosphere.
- the quarterthiophene derivative 2A having a hexyl group as a protecting group is hardly affected by the deterioration of properties.
- Adhesion was evaluated for a monomolecular film of quarterthiophene derivative 2A prepared by the same method as in Example 2 and a film of quarterthiophene 2C prepared by vapor deposition with a film thickness of about lOnm.
- the membrane was cut into a 10 m square grid with a cross cutter, and then a commercially available Kapton tape was attached and peeled. Then, the shape of the membrane was evaluated by AFM.
- the quartiophene derivative 2A film shape was the same as before Kapton tape treatment, and it was confirmed that a domain of several tens of zm ⁇ was formed. Domains observed before treatment were not observed. This is probably because the film was peeled off by the Kapton treatment.
- Quarterthiophene derivative 2A is used in the form of a solution, and as the hydrolysis reaction of triethoxysilyl group proceeds, the reaction with the hydroxyl group on the substrate surface proceeds to form a film. This is probably because silanol bonds are more effectively formed between [0146] (Experiment 3)
- Quarterthiophene was dissolved in n-chlorosuccinimide, black mouth form, and acetic acid solution, and the terminal hydrogen was cut off. The solution placed in the flask was stirred under a nitrogen atmosphere to obtain 2-black-quarter quatiophene. 2-Black mouthquarter thiophene was dissolved in sodium carbonate, sodium hydroxide, tetrahydrofuran (THF) and mixed with excess pure water. By reacting this solution at 110 ° C, the chloroiated end was hydroxylated.
- Quarterthiophene derivatives represented by the general formula (3B) (hereinafter, quarterthiophene) Derivative 3B)
- the synthesis method is the same as the method of Synthesis Example 3 except that the ethereal reaction is omitted and the octadecyl group coupling reaction using a Grignard reagent is performed.
- the respective monomolecular films were formed by the solution immersion method of the substrate.
- clothiophene derivative was used as a 0.2 mM solution using black mouth form.
- Surface hydrophilization treatment was performed by immersing a Si wafer that was used as a substrate in a 7: 3 vol% solution of concentrated sulfuric acid and hydrogen peroxide solution.
- a Si wafer subjected to hydrophilization treatment in the prepared solution was immersed for 24 hours at room temperature.
- the substrate from which the solution force was also removed was subjected to ultrasonic cleaning in chloroform and ethanol solvent to remove the remaining compounds.
- X-ray diffraction measurement was performed using the monomolecular film prepared in the above example. Both membranes A diffraction peak with a surface spacing of 0.41 nm due to the hexagonal crystal structure of the octadecyl group was observed. Furthermore, diffraction peaks derived from the quarterthiophene skeleton were observed, and the plane spacing determined from each diffraction peak was 0.448, 0.378, 0.311 nm for the quarterthiophene derivative 3A film, and the quarterthiophene derivative. In the 3B film, they were 0.460, 0.397, and 0.325 nm.
- the octadecyl group and the quarterthiophene skeleton are crystallized in any film, and there is no difference in the packing state of the octadecyl group! / Was found to be packed more densely than the quarterthiophene derivative 3B film.
- chrome was deposited on the silicon substrate 10 to form the gate electrode 15.
- vapor deposition was performed in the order of chromium and gold, and a source electrode 13 and a drain electrode 14 were formed by a normal lithography technique.
- the fabricated device had a channel width of 200 ⁇ m, a length of 1000 mm, and an insulating layer thickness of 300 nm.
- the organic semiconductor layer 12 of the quarterthiophene derivative 3A was formed on the obtained substrate using the method shown in Example 10.
- the organic thin film transistors of the obtained quarterthiophene derivatives 3A and 3B have field effect mobilities of 1 X 10— 1 and 9 X 10 " 2 cmVVs, respectively, and an on-Z-off ratio of about 5 and 4 digits.
- the organic thin film transistor using the quarterthiophene derivative 3A performed better than the one using the quaterthiophene derivative 3B because the voltage was applied from the outside in the fabricated organic thin film transistor.
- the quarter-thiophene derivative 3A which has a relatively small intermolecular distance in the quart- teroffen skeleton, is more likely to cause carrier hopping conduction, thus increasing the on-current.
- the synthesis method is the same as the method of Synthesis Example 4 except that the Williamson synthesis method is omitted and the Grignard reaction is used.
- the orientation angles of the bond between the terfel skeleton and the perfluorooctyl group were 168 degrees and 133 degrees, respectively. It was confirmed that the orientation angle of the bond can be increased by using an ether bond, and thereby the orientation direction of the perfluorooctyl group in the film state can be expanded.
- the area occupied by the molecules was determined in the same manner as in Example 2 except that the terfel derivatives 4A and 4B were used.
- Molecular area is Terufueniru derivative 4A whereas was 0. 41 ⁇ 2 ⁇ ⁇ 1
- Terufue - Le derivative 4B is 0.5311111 2 '11101 _ 1 and Terufue - compared to Le induction body 4A 0.
- the molecular volume decreased due to the ether bond. As a result, it can be seen that those having a perfluorooctyl group bonded through an ether bond can reduce the distance between adjacent molecules in the monomolecular film.
- the organosilane compound (I) of the present invention and the organic thin film using the compound are TFT, solar It is useful for the manufacture of semiconductor electronic devices such as ponds, fuel cells, and sensors.
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Abstract
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PCT/JP2005/013817 WO2006016483A1 (ja) | 2004-08-09 | 2005-07-28 | π電子共役系有機シラン化合物、機能性有機薄膜及びそれらの製造方法 |
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US (1) | US20080075950A1 (ja) |
WO (1) | WO2006016483A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2008001679A1 (fr) * | 2006-06-27 | 2008-01-03 | Jsr Corporation | procédé de formation de motif et composition POUR formation de film mince organique À utilisER dans ce PROCÉDÉ |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US7759511B2 (en) * | 2005-01-13 | 2010-07-20 | Lg Chem, Ltd. | Liquid crystal composition comprising novel silicon containing compounds and liquid crystal display device using the same |
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JPH01220726A (ja) * | 1988-02-26 | 1989-09-04 | Toyota Autom Loom Works Ltd | コンプレッサ用電磁クラッチの制御装置 |
JPH0643463A (ja) * | 1992-07-23 | 1994-02-18 | Canon Inc | 液晶素子 |
JPH0930989A (ja) * | 1995-05-15 | 1997-02-04 | Chisso Corp | ビアリール誘導体の製造方法 |
JPH0940779A (ja) * | 1995-08-01 | 1997-02-10 | Toshiba Corp | ポリシロキサン、ポリシロキサン組成物、絶縁膜の製造方法、着色部材の製造方法及び導電膜の製造方法 |
JP2001031685A (ja) * | 1999-07-15 | 2001-02-06 | Chisso Corp | シリコン化合物、液晶組成物および液晶表示素子 |
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2005
- 2005-07-28 WO PCT/JP2005/013817 patent/WO2006016483A1/ja active Application Filing
- 2005-07-28 US US11/632,217 patent/US20080075950A1/en not_active Abandoned
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JPH01220726A (ja) * | 1988-02-26 | 1989-09-04 | Toyota Autom Loom Works Ltd | コンプレッサ用電磁クラッチの制御装置 |
JPH0643463A (ja) * | 1992-07-23 | 1994-02-18 | Canon Inc | 液晶素子 |
JPH0930989A (ja) * | 1995-05-15 | 1997-02-04 | Chisso Corp | ビアリール誘導体の製造方法 |
JPH0940779A (ja) * | 1995-08-01 | 1997-02-10 | Toshiba Corp | ポリシロキサン、ポリシロキサン組成物、絶縁膜の製造方法、着色部材の製造方法及び導電膜の製造方法 |
JP2001031685A (ja) * | 1999-07-15 | 2001-02-06 | Chisso Corp | シリコン化合物、液晶組成物および液晶表示素子 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008001679A1 (fr) * | 2006-06-27 | 2008-01-03 | Jsr Corporation | procédé de formation de motif et composition POUR formation de film mince organique À utilisER dans ce PROCÉDÉ |
EP2034364A1 (en) * | 2006-06-27 | 2009-03-11 | JSR Corporation | Method of forming pattern and composition for forming of organic thin-film for use therein |
JPWO2008001679A1 (ja) * | 2006-06-27 | 2009-11-26 | Jsr株式会社 | パターン形成方法及びそれに用いる有機薄膜形成用組成物 |
EP2034364A4 (en) * | 2006-06-27 | 2010-12-01 | Jsr Corp | METHOD FOR FORMING A STRUCTURE AND COMPOSITION FOR FORMING AN ORGANIC THIN FILM FOR USE THEREOF |
US8173348B2 (en) | 2006-06-27 | 2012-05-08 | Jsr Corporation | Method of forming pattern and composition for forming of organic thin-film for use therein |
Also Published As
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US20080075950A1 (en) | 2008-03-27 |
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