WO2011004688A1 - Phthalocyanine compounds - Google Patents
Phthalocyanine compounds Download PDFInfo
- Publication number
- WO2011004688A1 WO2011004688A1 PCT/JP2010/060334 JP2010060334W WO2011004688A1 WO 2011004688 A1 WO2011004688 A1 WO 2011004688A1 JP 2010060334 W JP2010060334 W JP 2010060334W WO 2011004688 A1 WO2011004688 A1 WO 2011004688A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- phthalocyanine compound
- oxide
- octakis
- och
- phthalocyanine
- Prior art date
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- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical class N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 title claims abstract description 41
- -1 phthalocyanine compound Chemical class 0.000 claims description 87
- 238000006243 chemical reaction Methods 0.000 claims description 30
- 125000003545 alkoxy group Chemical group 0.000 claims description 12
- 125000004432 carbon atom Chemical group C* 0.000 claims description 12
- 239000011358 absorbing material Substances 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 10
- 238000010521 absorption reaction Methods 0.000 abstract description 25
- 238000000034 method Methods 0.000 abstract description 22
- 238000010438 heat treatment Methods 0.000 abstract description 18
- 230000031700 light absorption Effects 0.000 abstract description 14
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 239000003960 organic solvent Substances 0.000 abstract description 4
- 238000004528 spin coating Methods 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 35
- 229940125773 compound 10 Drugs 0.000 description 26
- ZLVXBBHTMQJRSX-VMGNSXQWSA-N jdtic Chemical compound C1([C@]2(C)CCN(C[C@@H]2C)C[C@H](C(C)C)NC(=O)[C@@H]2NCC3=CC(O)=CC=C3C2)=CC=CC(O)=C1 ZLVXBBHTMQJRSX-VMGNSXQWSA-N 0.000 description 26
- 125000001424 substituent group Chemical group 0.000 description 20
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- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 11
- 238000000576 coating method Methods 0.000 description 11
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 10
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- 125000004793 2,2,2-trifluoroethoxy group Chemical group FC(CO*)(F)F 0.000 description 6
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- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
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- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 description 2
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- 150000003681 vanadium Chemical class 0.000 description 2
- IBYSTTGVDIFUAY-UHFFFAOYSA-N vanadium monoxide Chemical compound [V]=O IBYSTTGVDIFUAY-UHFFFAOYSA-N 0.000 description 2
- HQYCOEXWFMFWLR-UHFFFAOYSA-K vanadium(iii) chloride Chemical compound [Cl-].[Cl-].[Cl-].[V+3] HQYCOEXWFMFWLR-UHFFFAOYSA-K 0.000 description 2
- OCJBOOLMMGQPQU-UHFFFAOYSA-N 1,4-dichlorobenzene Chemical compound ClC1=CC=C(Cl)C=C1 OCJBOOLMMGQPQU-UHFFFAOYSA-N 0.000 description 1
- 125000004797 2,2,2-trichloroethoxy group Chemical group ClC(CO*)(Cl)Cl 0.000 description 1
- IPXKNSIIPLVCLB-UHFFFAOYSA-N 2-(3,3,3-trifluoropropylperoxycarbonyl)benzoic acid Chemical compound C1=CC=C(C(=C1)C(=O)O)C(=O)OOCCC(F)(F)F IPXKNSIIPLVCLB-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B47/00—Porphines; Azaporphines
- C09B47/04—Phthalocyanines abbreviation: Pc
- C09B47/06—Preparation from carboxylic acids or derivatives thereof, e.g. anhydrides, amides, mononitriles, phthalimide, o-cyanobenzamide
- C09B47/067—Preparation from carboxylic acids or derivatives thereof, e.g. anhydrides, amides, mononitriles, phthalimide, o-cyanobenzamide from phthalodinitriles naphthalenedinitriles, aromatic dinitriles prepared in situ, hydrogenated phthalodinitrile
- C09B47/0675—Preparation from carboxylic acids or derivatives thereof, e.g. anhydrides, amides, mononitriles, phthalimide, o-cyanobenzamide from phthalodinitriles naphthalenedinitriles, aromatic dinitriles prepared in situ, hydrogenated phthalodinitrile having oxygen or sulfur linked directly to the skeleton
Definitions
- the present invention relates to phthalocyanine compounds and the like useful as materials for photoelectric conversion elements, optical recording media, optical filters and the like.
- a phthalocyanine compound is an organic semiconductor that is chemically stable and has a narrow band gap. It is known that a thin film of a phthalocyanine compound having such characteristics is formed and used as an organic photovoltaic element or a near-infrared absorbing material (for example, Patent Document 1 and Patent Document 2).
- the phthalocyanine compound Since the phthalocyanine compound is generally insoluble in a solvent, it is usually thinned by a vacuum deposition method or the like. However, in Patent Document 2, a phthalocyanine compound having a specific substituent has solubility in a solvent. It is disclosed to show.
- phthalocyanine compounds are used according to various uses, there is a problem that there are few phthalocyanine compounds having desirable characteristics and the range of material selection is narrow depending on the use.
- some phthalocyanine compounds exhibit solubility in a solvent as described above, but are preferably used as a P-type organic semiconductor material that is soluble in a solvent and can absorb near-infrared light. Has not been obtained yet.
- an object of the present invention is to provide a phthalocyanine compound or the like that can be formed by a simple process and has a desirable absorption region as a material for a photoelectric conversion element or the like.
- the phthalocyanine compound in the present invention is a phthalocyanine compound represented by the following general formula (I), wherein R1 to R8 are linear halogenated alkoxy groups having 5 or less carbon atoms, or 5 carbon atoms. It represents one of the following branched alkoxy groups. These substituents R1 to R8 may be the same or different.
- R1 to R8 in the above general formula (I) are preferably selected from the group of 1a to 1g represented by the following chemical formula (II).
- the light absorbing material of the present invention is characterized by containing the above-mentioned phthalocyanine compound.
- the light absorbing material is preferably formed into a film and heated at a temperature of more than 60 ° C. and not more than 150 ° C.
- the photoelectric conversion element of the present invention is characterized by including a photoelectric conversion layer containing the above-described light absorbing material.
- a phthalocyanine compound or the like that is soluble in a solvent, can be formed by a simple process such as a coating method, and has a desirable absorption region as a material for a photoelectric conversion element or the like.
- FIG. 1 shows the molecular formula of the phthalocyanine compound of the present invention.
- the phthalocyanine compound 10 of the present invention contains vanadium oxide (VO) as a central metal compound and substituents R1 to R8.
- the substituents R1 to R8 are either a linear halogenated alkoxy group having 5 or less carbon atoms or a branched alkoxy group having 5 or less carbon atoms, and may be the same or different. Good.
- the straight-chain halogenated alkoxy group having 5 or less carbon atoms is a group in which a part of methoxy group, ethoxy group, propoxy group, butoxy group or pentyloxy group is halogenated.
- halogen element fluorine (F) or chlorine (Cl) is preferable.
- phthalocyanine compound examples include 1,4,5,8,9,12,13,16-octakis (monofluoromethoxy) phthalocyaninatovanadium oxide, 1,4,5,8,9,12, 13,16-octakis (difluoromethoxy) phthalocyaninatovanadium oxide, 1,4,5,8,9,12,13,16-octakis (trifluoromethoxy) phthalocyaninatovanadium oxide, 1,4,5,8 , 9,12,13,16-octakis (monochloromethoxy) phthalocyaninatovanadium oxide, 1,4,5,8,9,12,13,16-octakis (dichloromethoxy) phthalocyaninatovanadium oxide, 1,4 , 5,8,9,12,13,16-octakis (trichloromethoxy) phthalocyanine Tovanadium oxide, 1,4,5,8,9,12,13,16-octakis (2-
- substituents R1 to R8 are preferably selected from the group of 1a to 1g represented by the following chemical formula (II).
- the substituents R1 to R8 selected from the group of 1a to 1g may be the same or different. That is, the above-mentioned compounds having the same substituents R1 to R8, for example, 1,4,5,8,9,12,13,16-octakis (2,2,2-trifluoroethoxy) phthalocyaninato Vanadium oxide, 1,4,5,8,9,12,13,16-octakis (2,2,2-trichloroethoxy) phthalocyaninatovanadium oxide, 1,4,5,8,9,12,13, 16-octakis (3,3,3-trifluoropropoxy) phthalocyaninatovanadium oxide, 1,4,5,8,9,12,13,16-octakis (3,3,3-trichloropropoxy) phthalocyaninato Vanadium oxide, 1,4,5,8,9,12,13,16-octakis-iso-propoxyphthalocyaninatovanadium oxide, 1, , 5,8,
- the phthalocyanine compound 10 has excellent solubility in organic solvents. It is considered that the solubility in organic solvents is mainly brought about by the substituents R1 to R8. That is, the solubility of the phthalocyanine compound 10 is improved by having a linear halogenated alkoxy group having 5 or less carbon atoms or a branched alkoxy group having 5 or less carbon atoms as a substituent. From the viewpoint of improving solubility, the substituent is more preferably selected from the group of 1a to 1g represented by the chemical formula (II), and a halogenated alkoxy such as 2,2,2-trifluoroethoxy group (1a). Particularly preferred is a group.
- the phthalocyanine compound 10 is light absorptive and can particularly efficiently absorb near infrared light. It is considered that the absorption of near infrared light is mainly due to the high crystallinity of the phthalocyanine compound 10.
- the crystallinity of the phthalocyanine compound 10 is that the oxygen ion of vanadium oxide at the center protrudes to one of the planes of the phthalocyanine compound 10 having a substantially planar structure, and the carbon number of the substituent R is suppressed to 5 or less. Is brought about by being.
- the absorption wavelength preferably has a maximum absorption wavelength in the wavelength region of 700 to 1100 nm, and more preferably has a maximum absorption wavelength in the wavelength region of 800 to 1000 nm.
- the phthalocyanine compound 10 When the phthalocyanine compound 10 is used as a light absorbing material, it is preferable to form a film (hereinafter sometimes referred to as a thin film).
- the method for forming the film is not limited. However, since the phthalocyanine compound 10 has excellent solubility in an organic solvent, it can be formed by a coating method.
- the coating method is a method in which the phthalocyanine compound 10 is dissolved in a suitable solvent to form a coating solution, and the coating solution is applied to a substrate to form a film.
- Solvents used include alcohols such as methyl alcohol and ethyl alcohol, ketones such as acetone and methyl ethyl ketone, esters such as ethyl acetate and butyl acetate, hydrocarbons such as toluene and xylene, dichloromethane, chloroform, chlorobenzene and the like. Examples thereof include halogenated hydrocarbons.
- the concentration of the phthalocyanine compound 10 in the solvent is preferably 0.01 to 20% by mass.
- the substrate for example, a glass plate, a plastic film or the like can be used.
- the plastic film include films made of polyolefins such as polyethylene and polypropylene, polyesters such as polyethylene terephthalate, polybutylene terephthalate, and polyethylene naphthalate, polyvinyl chloride, polystyrene, and polyimide.
- the thickness of the substrate is about 10 ⁇ m to 5 mm.
- a gas barrier layer or a conductive layer may be provided on these substrates.
- the gas barrier layer include a layer made of silica or silicon nitride
- the conductive layer include a layer made of indium oxide, tin oxide, tin-doped indium oxide (ITO), or zinc oxide.
- Examples of the method for applying the coating liquid to the substrate include a spin coating method, a bar coating method, a gravure coating method, and a spray coating method. After applying the coating solution by these methods, the film of the phthalocyanine compound is formed by heating as necessary to remove the solvent.
- the thickness of the formed film is not particularly limited and may be determined according to the application and purpose, but is usually about 10 nm to 10 ⁇ m. Note that a vacuum deposition method, a sputtering method, or the like can also be used as a film formation method.
- the heating temperature is preferably higher than 60 ° C. and 150 ° C. or lower.
- the heating method is not limited, and it can be performed by a method such as using a hot plate or an oven (a constant temperature bath).
- the heating time is about 1 minute to 1 hour, preferably about 2 minutes to 30 minutes.
- the heating atmosphere may be air, or may be under reduced pressure, filled with nitrogen or an inert gas. Moreover, you may perform simultaneously drying and heat processing of a coating film.
- FIG. 2 is a light absorption spectrum of the phthalocyanine compound 101a of the present invention (described later).
- the light absorption spectrum of the phthalocyanine compound 101a differs between the solution and the film. That is, in the case of a solution, the maximum absorption wavelength is in the vicinity of 740 nm as shown by the broken line, whereas in the case of a film, the maximum absorption wavelength is about 836 nm as shown by the solid line.
- the film-like phthalocyanine compound 101a is obtained by applying a coating solution to a glass substrate to form a thin film and heating at 150 ° C.
- the thin-film phthalocyanine compound 101a has a light absorption spectrum shown by a solid line in FIG. 2, but the light absorption spectrum is changed by heating.
- the solution in FIG. 2 uses chlorobenzene as a solvent. And about chlorobenzene, since absorption is not recognized by 740 nm vicinity, it can be said that the change of the maximum absorption wavelength in FIG. 2 originates in the phthalocyanine compound 101a.
- FIG. 3 shows changes in the light absorption spectrum when the heating temperature of the thinned phthalocyanine compound 101a shown in FIG. 2 is changed.
- the heating temperature when heated at 60 ° C., it has a light absorption spectrum (dashed line) close to a solution.
- the heating temperature is 80 ° C.
- the absorption intensity peak shifts to the near infrared region.
- the maximum absorption wavelength shows almost the same value as in the case of 80 ° C. while shifting to the near infrared region, and has a stable absorption intensity peak. It can be seen that it is.
- the phthalocyanine compound 101a can be suitably used in a field where an absorption band in the near infrared region is required.
- the fall of absorption intensity is recognized as shown in figure. For this reason, it is preferable to heat the phthalocyanine compound 101a in a temperature range exceeding 60 ° C. and 150 ° C. or less.
- the phthalocyanine compound 101a when the thin film of the phthalocyanine compound 101a after heating is observed with a microscope, a birefringent domain exhibiting high crystallinity is observed. This also suggests that the phthalocyanine compound 101a is crystallized by heating and has an absorption band in the near infrared region when it has a crystal structure.
- the phthalocyanine compound 10 can be performed using a known method for producing a phthalocyanine compound, but it is preferable to use a cyclization reaction using a phthalonitrile compound and a metal salt. Hereinafter, the manufacturing method of the phthalocyanine compound 10 using a cyclization reaction is demonstrated.
- 1,4-bis (2,2,2-trifluoroethoxy) phthalonitrile (by reaction of dicyanohydroquinone and 2,2,2-trifluoroethyl tosylate) Compound 12) is synthesized.
- This synthesis is performed by adding dicyanohydroquinone and 2,2,2-trifluoroethyl tosylate in a solvent such as N, N-dimethylformamide (DMF) and stirring at 80 to 130 ° C. for about 1 to 60 hours. Is called.
- a solvent such as N, N-dimethylformamide (DMF)
- DMF N, N-dimethylformamide
- 2,2,2-trifluoroethyl tosylate can be obtained, for example, by the method described in paragraph 0360 of JP-A-2005-84584.
- the obtained compound 12 can be separated, washed and purified by a known method.
- the obtained compound 12, vanadium salt and urea are added to a solvent such as benzonitrile and dichlorobenzene, and stirred at 100 to 170 ° C. for about 10 to 120 minutes.
- the compound 101a which is one of the phthalocyanine compounds 10 that is, 1, 4, 5, 8, 9, 12, 13, 16-octakis (2,2,2-trifluoroethoxy) Phthalocyaninatovanadium oxide
- the vanadium salt vanadium dichloride, vanadium trichloride, vanadium pentoxide, or the like can be used.
- the obtained 1,4,5,8,9,12,13,16-octakis (2,2,2-trifluoroethoxy) phthalocyaninatovanadium oxide can be separated, washed and purified by known methods. Can do.
- the phthalocyanine compound having —OCH 2 CF 3 as a substituent has been described.
- the —OCH 2 CF 3 of the compound 12 may be another linear halogenated alkoxy group having 5 or less carbon atoms, or the number of carbon atoms. If the branched alkoxy group is 5 or less, the phthalocyanine compound 10 having those substituents can be obtained.
- the photoelectric conversion layer of the present invention includes a light absorbing material containing the phthalocyanine compound 10.
- the photoelectric conversion element generally has two electrodes, that is, an anode and a cathode, and has a structure including a photoelectric conversion layer between them. At least one of the anode and the cathode needs to transmit light, but the anode is usually a light-transmitting electrode.
- Examples of the conductive material for forming the anode include indium oxide, tin oxide, tin-doped indium oxide (ITO), iridium oxide, zinc oxide, and gallium-doped zinc oxide. However, the conductivity and transparency are good. Tin-doped indium oxide (ITO) and gallium-doped zinc oxide are preferred. Examples of the conductive material for forming the cathode include metals such as platinum, gold, aluminum, iridium, and chromium, and carbon nanotubes.
- the anode and the cathode can be obtained, for example, by forming a layer made of a conductive material on a substrate or a photoelectric conversion layer by a PVD (physical vapor deposition) method such as vacuum deposition, sputtering, or ion plating.
- a glass plate or a plastic film is preferable.
- the plastic film include films made of polyolefins such as polyethylene and polypropylene, polyesters such as polyethylene terephthalate, polybutylene terephthalate, and polyethylene naphthalate, polyvinyl chloride, polystyrene, and polyimide.
- the thickness of the substrate is about 10 ⁇ m to 5 mm.
- the thickness of the anode and the cathode is preferably 10 to 500 nm, respectively.
- the photoelectric conversion layer is a layer having a function of absorbing light and converting light energy into electric energy.
- a layer in which a p-type semiconductor layer and an n-type semiconductor layer are stacked may be used.
- the phthalocyanine compound is a p-type semiconductor, and the phthalocyanine compound 10 of the present invention functions as a p-type semiconductor layer in such a photoelectric conversion layer.
- the n-type semiconductor may be an inorganic semiconductor or an organic semiconductor.
- the inorganic semiconductor include silicon doped with arsenic or phosphorus
- examples of the organic semiconductor include fullerene and fullerene derivatives such as [6,6] -phenyl-C 61 -methyl butyrate (PCBM).
- an intrinsic semiconductor (i-type semiconductor) layer may be provided between the p-type semiconductor layer and the n-type semiconductor layer. Conversion efficiency can be improved by making a photoelectric converting layer into such a structure.
- Each layer constituting the photoelectric conversion layer is formed by a coating method such as PVD (physical vapor deposition) such as vacuum deposition, sputtering, ion plating, spin coating method, bar coating method, gravure coating method, spray coating method, etc. can do.
- the thickness of the photoelectric conversion layer is preferably 10 nm to 3 ⁇ m.
- a buffer layer may be provided in the photoelectric conversion element.
- the buffer layer include a layer containing bathocuproine (2,9-dimethyl-4,7diphenyl-1,10-phenanthroline) as a hole blocking material.
- This buffer layer (hole blocking material) is usually provided between the n-type semiconductor layer and the cathode.
- a photoelectric conversion element a solar cell, an optical sensor, etc. are mentioned, for example.
- Solubility test The phthalocyanine compound was added to each solvent and stirred so that the concentration of the phthalocyanine compound was 10% by mass, the solubility of the phthalocyanine compound was visually observed, and the solubility was observed depending on the presence or absence of undissolved substances. .
- Dichloromethane, chloroform, chlorobenzene, tetrahydrofuran, acetone, ethyl acetate, and toluene were used as the solvent. Measurement was performed using a light absorption spectrophotometer (“UV-3101PC” manufactured by Shimadzu Corporation). Confirmation of crystallinity It was observed at a magnification of 10 using a polarizing microscope (OLYMPUS "BX51").
- Example 1 As shown in the reaction formula (1) in FIG. 4, 1,4-bis (2,2,2-trifluoroethoxy) phthalonitrile (Compound 12) was synthesized from dicyanohydroquinone (manufactured by Tokyo Chemical Industry Co., Ltd.). That is, a solution obtained by dissolving 2.3 g of metal sodium in 80 ml of methanol (solvent) at room temperature under a nitrogen stream was added to 8.0 g of dicyanohydroquinone, stirred at room temperature for 30 minutes, and unreacted methanol was removed under reduced pressure. Removed.
- dicyanohydroquinone manufactured by Tokyo Chemical Industry Co., Ltd.
- phthalocyanine compound 101a 1,4,5,8,9,12,13,16-octakis (2,2,2-trifluoroethoxy) phthalocyaninatovanadium oxide. It was confirmed that there was. The evaluation result of this phthalocyanine compound 101a is shown.
- the phthalocyanine compound 101a is crystallized by heating and has an absorption band in the near infrared region when it has a crystal structure.
- a photoelectric conversion element was produced and evaluated using the obtained phthalocyanine compound 101a.
- ITO glass cleaned by cleaning and UV (ultraviolet light) -ozone treatment transparent conductive glass having a tin-doped indium oxide (ITO) film formed on a glass substrate, resistance value 14 ⁇ / sq) ITO film (anode
- the obtained phthalocyanine compound 101a was laminated to a thickness of 50 nm under the conditions of a pressure of 3.3 ⁇ 10 ⁇ 4 Pa and a deposition rate of 0.4 K / sec.
- fullerene manufactured by Nano-C
- fullerene as an n-type organic semiconductor on the phthalocyanine compound 101a layer so as to have a thickness of 50 nm under the conditions of a pressure of 1.1 ⁇ 10 ⁇ 4 Pa and a deposition rate of 0.5 kg / sec. Laminated.
- bathocuproin As a hole blocking agent was laminated on the fullerene layer to a thickness of 10 nm under the conditions of 8.5 ⁇ 10 ⁇ 5 Pa and a deposition rate of 0.4 kg / sec.
- a silver (Nihon Kojun Kagaku Co., Ltd.) silver as a cathode was stacked on the bathocuproine layer at a thickness of 8.2 ⁇ 10 ⁇ 5 Pa and a deposition rate of 0.4 ⁇ / sec to produce a photoelectric conversion element.
- a photoelectric conversion element was irradiated with light from the ITO glass side using a tungsten lamp (100 W) and the current value at the time of short circuit was measured, a current value of 27.4 ⁇ A was obtained, and a photoelectric conversion element showing good characteristics was obtained. Obtained.
- Comparative Example 1 In Comparative Example 1 in which the central metal is copper and Comparative Example 2 in which the central metal compound is dichlorotin, the phthalocyanine compound having the same substituent R as the phthalocyanine compound 101a has an absorption band in the near infrared region. It was confirmed not to.
- the phthalocyanine compound 10 can be formed into a film by a coating method such as spin coating which is simpler than the conventional vapor deposition method. Moreover, since the phthalocyanine compound 10 of the present invention has light absorption performance, it can be suitably used for photovoltaic elements such as organic thin-film solar cells and optical sensors, optical recording media, and the like.
- the phthalocyanine compound 10 can easily shift the absorption band to the near infrared region by heat treatment. Therefore, the phthalocyanine compound 10 satisfies the performance particularly required in the field of P-type organic semiconductor materials, and can be said to be useful in this respect.
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Abstract
Description
The phthalocyanine compound in the present invention is a phthalocyanine compound represented by the following general formula (I), wherein R1 to R8 are linear halogenated alkoxy groups having 5 or less carbon atoms, or 5 carbon atoms. It represents one of the following branched alkoxy groups. These substituents R1 to R8 may be the same or different.
[化学式(II)]
1a:-OCH2CF3
1b:-OCH2CH2CF3
1c:-OCH2CCl3
1d:-OCH2CH2CCl3
1e:-OCH(CH3)2
1f:-OCH2CH(CH3)2
1g:-OCH2CH2CH(CH3)2 R1 to R8 in the above general formula (I) are preferably selected from the group of 1a to 1g represented by the following chemical formula (II).
[Chemical formula (II)]
1a: —OCH 2 CF 3
1b: —OCH 2 CH 2 CF 3
1c: —OCH 2 CCl 3
1d: —OCH 2 CH 2 CCl 3
1e: —OCH (CH 3 ) 2
1f: —OCH 2 CH (CH 3 ) 2
1 g: —OCH 2 CH 2 CH (CH 3 ) 2
[化学式(II)]
1a:-OCH2CF3
1b:-OCH2CH2CF3
1c:-OCH2CCl3
1d:-OCH2CH2CCl3
1e:-OCH(CH3)2
1f:-OCH2CH(CH3)2
1g:-OCH2CH2CH(CH3)2 Here, the substituents R1 to R8 are preferably selected from the group of 1a to 1g represented by the following chemical formula (II).
[Chemical formula (II)]
1a: —OCH 2 CF 3
1b: —OCH 2 CH 2 CF 3
1c: —OCH 2 CCl 3
1d: —OCH 2 CH 2 CCl 3
1e: —OCH (CH 3 ) 2
1f: —OCH 2 CH (CH 3 ) 2
1 g: —OCH 2 CH 2 CH (CH 3 ) 2
なお、化合物の構造の確認、溶解性、光吸収性及び結晶性の測定・評価は以下の通り行った。
化合物の構造の確認
1H NMR測定及びIR測定により確認した。1H NMR測定は、核磁気共鳴装置(NMR)(Bruker社製、「Avance500」)を用い、IR測定は、フーリエ変換赤外吸収(FT-IR)測定装置(PERKIN ELMER社製、「SPECTRUM ONE」)を用いて、臭化カリウム(KBr)錠剤法により測定した。
溶解性試験
フタロシアニン化合物の濃度が10質量%になるように、それぞれの溶媒にフタロシアニン化合物を加えて撹拌し、フタロシアニン化合物の溶解性を目視で観察し、未溶解物の有無により溶解性を観察した。溶媒として、ジクロロメタン、クロロホルム、クロロベンゼン、テトラヒドロフラン、アセトン、酢酸エチル、トルエンを用いた。
光吸収性
分光光度計(株式会社島津製作所製、「UV-3101PC」)を用いて測定した。
結晶性の確認
偏光顕微鏡(オリンパス株式会社製 「BX51」)を用いて倍率10倍で観察した。 EXAMPLES Hereinafter, although an Example is given and this invention is demonstrated further in detail, this invention is not limited to a following example at all.
In addition, confirmation of the structure of the compound, and measurement / evaluation of solubility, light absorption and crystallinity were performed as follows.
Confirmation of compound structure
This was confirmed by 1 H NMR measurement and IR measurement. 1 H NMR measurement uses a nuclear magnetic resonance apparatus (NMR) (manufactured by Bruker, “
Solubility test The phthalocyanine compound was added to each solvent and stirred so that the concentration of the phthalocyanine compound was 10% by mass, the solubility of the phthalocyanine compound was visually observed, and the solubility was observed depending on the presence or absence of undissolved substances. . Dichloromethane, chloroform, chlorobenzene, tetrahydrofuran, acetone, ethyl acetate, and toluene were used as the solvent.
Measurement was performed using a light absorption spectrophotometer (“UV-3101PC” manufactured by Shimadzu Corporation).
Confirmation of crystallinity It was observed at a magnification of 10 using a polarizing microscope (OLYMPUS "BX51").
図4の反応式(1)に示されるように、ジシアノハイドロキノン(東京化成株式会社製)から1,4-ビス(2,2,2-トリフルオロエトキシ)フタロニトリル(化合物12)を合成した。すなわち、窒素気流下、室温で、金属ナトリウム2.3gをメタノール(溶媒)80mlに溶解させた溶液を、ジシアノハイドロキノン8.0gに加え、室温で30分間撹拌し、減圧下において未反応のメタノールを除去した。これに2,2,2-トリフルオロエチルトシレート40.0g及び溶媒としてN,N-ジメチルホルムアミド(DMF)を加え、120℃に昇温して48時間、撹拌した。この反応混合物を室温まで冷却後、氷水に注加し、生じた固体をろ過して集めた後に、エタノールで洗浄した。こうして得られた固体をエタノール/へキサン(混合溶媒)から再結晶し、50℃で6時間、減圧乾燥した。こうして、11.7gの1,4-ビス(2,2,2-トリフルオロエトキシ)フタロニトリル(化合物12)を得た(収率70%)。 Example 1
As shown in the reaction formula (1) in FIG. 4, 1,4-bis (2,2,2-trifluoroethoxy) phthalonitrile (Compound 12) was synthesized from dicyanohydroquinone (manufactured by Tokyo Chemical Industry Co., Ltd.). That is, a solution obtained by dissolving 2.3 g of metal sodium in 80 ml of methanol (solvent) at room temperature under a nitrogen stream was added to 8.0 g of dicyanohydroquinone, stirred at room temperature for 30 minutes, and unreacted methanol was removed under reduced pressure. Removed. To this, 40.0 g of 2,2,2-trifluoroethyl tosylate and N, N-dimethylformamide (DMF) as a solvent were added, and the mixture was heated to 120 ° C. and stirred for 48 hours. The reaction mixture was cooled to room temperature, poured into ice water, and the resulting solid was collected by filtration and washed with ethanol. The solid thus obtained was recrystallized from ethanol / hexane (mixed solvent) and dried under reduced pressure at 50 ° C. for 6 hours. Thus, 11.7 g of 1,4-bis (2,2,2-trifluoroethoxy) phthalonitrile (Compound 12) was obtained (yield 70%).
1H NMR測定(重アセトン中)
8.99ppm(phH, 8H)、 5.78ppm(-OCH2CF, 16H)
金属を導入していないフタロシアニンに見られる-1.0ppm付近の化学シフトは観測されなかった。
IR測定
酸化バナジウム(VO)の振動ピークに帰属する1002cm-1が観測された。
これらの結果から、得られた化合物は、1、4、5、8、9、12、13、16-オクタキス(2,2,2-トリフルオロエトキシ)フタロシアニナトバナジウムオキサイド(フタロシアニン化合物101a)であることが確認された。このフタロシアニン化合物101aの評価結果を示す。 5.0 g of 1,4-bis (2,2,2-trifluoroethoxy) phthalonitrile (compound 12) was mixed with 40.0 g of urea and 1.6 g of vanadium trichloride. The reaction mixture was heated at 160 ° C. for about 90 minutes with stirring. Then, 100 ml of 1N hydrochloric acid was added to the reaction solution which had been allowed to cool to room temperature and heated to 100 ° C. After allowing to cool, the resulting green solid was collected by filtration, washed thoroughly with pure water, and extracted with ethyl acetate. The extracted organic layer was concentrated and purified by column chromatography (silica gel, acetone: hexane = 1: 1). Further, recrystallization (ethanol / hexane) was performed to obtain 2.0 g of a compound (yield 40%, melting point: 290 ° C. (decomposition)). The result of 1 H NMR measurement and IR measurement of the obtained compound is shown.
1 H NMR measurement (in heavy acetone)
8.99 ppm (phH, 8H), 5.78 ppm (—OCH 2 CF, 16H)
The chemical shift around −1.0 ppm observed in phthalocyanine into which no metal was introduced was not observed.
IR measurement 1002 cm −1 attributed to the vibration peak of vanadium oxide (VO) was observed.
From these results, the obtained compound was 1,4,5,8,9,12,13,16-octakis (2,2,2-trifluoroethoxy) phthalocyaninatovanadium oxide (
用いた全ての溶媒において未溶解物は見られず、良好な溶解性を示すことが確認された。
<光吸収性>
フタロシアニン化合物101aを10mg、クロロベンゼン0.75mlに溶解し、ガラス基板の表面に滴下した。そして基板を回転させることによりフタロシアニン化合物101aのスピンコート成膜を行い、60℃で10分間乾燥してフタロシアニン化合物101aを薄膜化した。乾燥後の膜厚は40nmであった。得られた薄膜を用いて、光吸収性の測定を行ったところ、極大吸収波長は740nmであった。薄膜を80℃、150℃、200℃で10分間加熱した後の極大吸収波長はいずれも836nmであり、良好な近赤外線吸収性を示した。 <Solubility test>
In all of the solvents used, no undissolved product was found, and it was confirmed that good solubility was exhibited.
<Light absorption>
The
溶解性試験と同様にして作成した薄膜を、80℃、150℃、200℃でそれぞれ加熱した後、偏光顕微鏡を用いて観察したところ、高い結晶性を示す複屈折性のドメインが観測され、フタロシアニン化合物101aが、結晶性に優れることが確認された。なお、60℃で乾燥したフタロシアニン化合物101aでは、結晶性を示す複屈折性のドメインが観測されなかった。 <Confirmation of crystallinity>
When the thin films prepared in the same manner as in the solubility test were heated at 80 ° C., 150 ° C., and 200 ° C., respectively, and observed using a polarizing microscope, birefringent domains exhibiting high crystallinity were observed, and phthalocyanine It was confirmed that the
フタロシアニン化合物101aと同じ置換基Rを有するフタロシアニン化合物であって、中心金属が銅である比較例1、および中心金属化合物がジクロロ錫である比較例2においては、近赤外領域に吸収帯を有さないことが確認された。また、置換基R1~R8(図1等参照)がいずれも水素である酸化バナジウムフタロシアニンの比較例3では、上述の溶解性試験で用いられた各溶媒に対する溶解性が、フタロシアニン化合物101aよりも低かった。 (Comparative example)
In Comparative Example 1 in which the central metal is copper and Comparative Example 2 in which the central metal compound is dichlorotin, the phthalocyanine compound having the same substituent R as the
Claims (5)
- 下記一般式(I)で表されるフタロシアニン化合物:
(式中Rは、炭素数が5以下の直鎖状のハロゲン化アルコキシ基、あるいは炭素数が5以下の分岐状のアルコキシ基のいずれかを表す) Phthalocyanine compounds represented by the following general formula (I):
(In the formula, R represents either a linear halogenated alkoxy group having 5 or less carbon atoms or a branched alkoxy group having 5 or less carbon atoms) - 前記一般式(I)中のRが下記化学式(II)で示される1aから1gの群から選択されることを特徴とする請求項1に記載のフタロシアニン化合物。
[化学式(II)]
1a:-OCH2CF3
1b:-OCH2CH2CF3
1c:-OCH2CCl3
1d:-OCH2CH2CCl3
1e:-OCH(CH3)2
1f:-OCH2CH(CH3)2
1g:-OCH2CH2CH(CH3)2 The phthalocyanine compound according to claim 1, wherein R in the general formula (I) is selected from the group of 1a to 1g represented by the following chemical formula (II).
[Chemical formula (II)]
1a: —OCH 2 CF 3
1b: —OCH 2 CH 2 CF 3
1c: —OCH 2 CCl 3
1d: —OCH 2 CH 2 CCl 3
1e: —OCH (CH 3 ) 2
1f: —OCH 2 CH (CH 3 ) 2
1 g: —OCH 2 CH 2 CH (CH 3 ) 2 - 請求項1に記載のフタロシアニン化合物を含むことを特徴とする光吸収材料。 A light-absorbing material comprising the phthalocyanine compound according to claim 1.
- 前記光吸収材料を膜状にして、60℃を超え150℃以下の温度で加熱したことを特徴とする請求項3に記載の光吸収材料。 The light-absorbing material according to claim 3, wherein the light-absorbing material is formed into a film and heated at a temperature exceeding 60 ° C and not more than 150 ° C.
- 請求項3または請求項4のいずれかに記載の光吸収材料を含む光電変換層を備えたことを特徴とする光電変換素子。 A photoelectric conversion element comprising a photoelectric conversion layer containing the light-absorbing material according to claim 3.
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Citations (3)
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JPH1059974A (en) * | 1996-08-21 | 1998-03-03 | Yamamoto Chem Inc | Production of phthalocyanine compound |
JP2000063693A (en) * | 1998-08-24 | 2000-02-29 | Nippon Shokubai Co Ltd | Preparation of phthalocyanine compound |
JP2004240043A (en) * | 2003-02-04 | 2004-08-26 | Fuji Photo Film Co Ltd | Original plate for lithographic printing plate |
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JPH05295283A (en) * | 1991-06-19 | 1993-11-09 | Mitsui Toatsu Chem Inc | Colorant for filter and color filter containing the colorant |
JPH11106386A (en) * | 1997-10-02 | 1999-04-20 | Ricoh Co Ltd | Production of metallophthalocyanines |
JP4079234B2 (en) * | 1998-01-23 | 2008-04-23 | 株式会社リコー | Method for producing metal phthalocyanines |
JP2002114790A (en) * | 2000-10-04 | 2002-04-16 | Nippon Shokubai Co Ltd | Method for purifying phthalocyanine compound and naphthalocyanine compound |
JP4238822B2 (en) * | 2004-12-03 | 2009-03-18 | セイコーエプソン株式会社 | Pattern-formed substrate, electro-optical device, pattern-formed substrate manufacturing method, and electro-optical device manufacturing method |
CN101255163A (en) * | 2008-03-14 | 2008-09-03 | 中国科学院长春应用化学研究所 | Soluble tetraalkyl phthalocyanine compound and preparation method thereof |
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JPH1059974A (en) * | 1996-08-21 | 1998-03-03 | Yamamoto Chem Inc | Production of phthalocyanine compound |
JP2000063693A (en) * | 1998-08-24 | 2000-02-29 | Nippon Shokubai Co Ltd | Preparation of phthalocyanine compound |
JP2004240043A (en) * | 2003-02-04 | 2004-08-26 | Fuji Photo Film Co Ltd | Original plate for lithographic printing plate |
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JP2012167145A (en) * | 2011-02-10 | 2012-09-06 | Fujifilm Corp | Colored curable composition, and color filter |
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