WO2016190283A1 - ピロメテンホウ素錯体、色変換組成物、色変換フィルムならびにそれを含む光源ユニット、ディスプレイおよび照明 - Google Patents
ピロメテンホウ素錯体、色変換組成物、色変換フィルムならびにそれを含む光源ユニット、ディスプレイおよび照明 Download PDFInfo
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- WO2016190283A1 WO2016190283A1 PCT/JP2016/065213 JP2016065213W WO2016190283A1 WO 2016190283 A1 WO2016190283 A1 WO 2016190283A1 JP 2016065213 W JP2016065213 W JP 2016065213W WO 2016190283 A1 WO2016190283 A1 WO 2016190283A1
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- MOFVSTNWEDAEEK-UHFFFAOYSA-M indocyanine green Chemical compound [Na+].[O-]S(=O)(=O)CCCCN1C2=CC=C3C=CC=CC3=C2C(C)(C)C1=CC=CC=CC=CC1=[N+](CCCCS([O-])(=O)=O)C2=CC=C(C=CC=C3)C3=C2C1(C)C MOFVSTNWEDAEEK-UHFFFAOYSA-M 0.000 description 1
- 229960004657 indocyanine green Drugs 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 229910052809 inorganic oxide Inorganic materials 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- JJWLVOIRVHMVIS-UHFFFAOYSA-N isopropylamine Chemical group CC(C)N JJWLVOIRVHMVIS-UHFFFAOYSA-N 0.000 description 1
- 125000002183 isoquinolinyl group Chemical group C1(=NC=CC2=CC=CC=C12)* 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 125000004492 methyl ester group Chemical group 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 150000002816 nickel compounds Chemical class 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 125000002868 norbornyl group Chemical group C12(CCC(CC1)C2)* 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 1
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 125000006340 pentafluoro ethyl group Chemical group FC(F)(F)C(F)(F)* 0.000 description 1
- 125000000538 pentafluorophenyl group Chemical group FC1=C(F)C(F)=C(*)C(F)=C1F 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- CSHWQDPOILHKBI-UHFFFAOYSA-N peryrene Natural products C1=CC(C2=CC=CC=3C2=C2C=CC=3)=C3C2=CC=CC3=C1 CSHWQDPOILHKBI-UHFFFAOYSA-N 0.000 description 1
- 239000002530 phenolic antioxidant Substances 0.000 description 1
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- 125000000951 phenoxy group Chemical group [H]C1=C([H])C([H])=C(O*)C([H])=C1[H] 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 125000004592 phthalazinyl group Chemical group C1(=NN=CC2=CC=CC=C12)* 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 125000003386 piperidinyl group Chemical group 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
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- 229920006122 polyamide resin Polymers 0.000 description 1
- 239000004632 polycaprolactone Substances 0.000 description 1
- 229920001610 polycaprolactone Polymers 0.000 description 1
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- 239000004431 polycarbonate resin Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
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- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 150000004033 porphyrin derivatives Chemical class 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 125000001501 propionyl group Chemical group O=C([*])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002572 propoxy group Chemical group [*]OC([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- WGYKZJWCGVVSQN-UHFFFAOYSA-N propylamine Chemical group CCCN WGYKZJWCGVVSQN-UHFFFAOYSA-N 0.000 description 1
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 description 1
- 125000004309 pyranyl group Chemical group O1C(C=CC=C1)* 0.000 description 1
- 125000003373 pyrazinyl group Chemical group 0.000 description 1
- 125000002098 pyridazinyl group Chemical group 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 150000003222 pyridines Chemical class 0.000 description 1
- 125000000168 pyrrolyl group Chemical group 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- JWVCLYRUEFBMGU-UHFFFAOYSA-N quinazoline Chemical compound N1=CN=CC2=CC=CC=C21 JWVCLYRUEFBMGU-UHFFFAOYSA-N 0.000 description 1
- 125000002294 quinazolinyl group Chemical group N1=C(N=CC2=CC=CC=C12)* 0.000 description 1
- 125000001567 quinoxalinyl group Chemical group N1=C(C=NC2=CC=CC=C12)* 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000013557 residual solvent Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- MUSLHCJRTRQOSP-UHFFFAOYSA-N rhodamine 101 Chemical compound [O-]C(=O)C1=CC=CC=C1C(C1=CC=2CCCN3CCCC(C=23)=C1O1)=C2C1=C(CCC1)C3=[N+]1CCCC3=C2 MUSLHCJRTRQOSP-UHFFFAOYSA-N 0.000 description 1
- 229940043267 rhodamine b Drugs 0.000 description 1
- 125000006413 ring segment Chemical group 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- YYMBJDOZVAITBP-UHFFFAOYSA-N rubrene Chemical compound C1=CC=CC=C1C(C1=C(C=2C=CC=CC=2)C2=CC=CC=C2C(C=2C=CC=CC=2)=C11)=C(C=CC=C2)C2=C1C1=CC=CC=C1 YYMBJDOZVAITBP-UHFFFAOYSA-N 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- DCKVNWZUADLDEH-UHFFFAOYSA-N sec-butyl acetate Chemical group CCC(C)OC(C)=O DCKVNWZUADLDEH-UHFFFAOYSA-N 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 150000003377 silicon compounds Chemical group 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical class O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- PJANXHGTPQOBST-UHFFFAOYSA-N stilbene Chemical class C=1C=CC=CC=1C=CC1=CC=CC=C1 PJANXHGTPQOBST-UHFFFAOYSA-N 0.000 description 1
- 238000012916 structural analysis Methods 0.000 description 1
- 125000000547 substituted alkyl group Chemical group 0.000 description 1
- COIVODZMVVUETJ-UHFFFAOYSA-N sulforhodamine 101 Chemical compound OS(=O)(=O)C1=CC(S([O-])(=O)=O)=CC=C1C1=C(C=C2C3=C4CCCN3CCC2)C4=[O+]C2=C1C=C1CCCN3CCCC2=C13 COIVODZMVVUETJ-UHFFFAOYSA-N 0.000 description 1
- 229910001936 tantalum oxide Inorganic materials 0.000 description 1
- 229940116411 terpineol Drugs 0.000 description 1
- 125000001981 tert-butyldimethylsilyl group Chemical group [H]C([H])([H])[Si]([H])(C([H])([H])[H])[*]C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000000037 tert-butyldiphenylsilyl group Chemical group [H]C1=C([H])C([H])=C([H])C([H])=C1[Si]([H])([*]C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- IFLREYGFSNHWGE-UHFFFAOYSA-N tetracene Chemical compound C1=CC=CC2=CC3=CC4=CC=CC=C4C=C3C=C21 IFLREYGFSNHWGE-UHFFFAOYSA-N 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- WBYWAXJHAXSJNI-VOTSOKGWSA-M trans-cinnamate Chemical compound [O-]C(=O)\C=C\C1=CC=CC=C1 WBYWAXJHAXSJNI-VOTSOKGWSA-M 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XTTGYFREQJCEML-UHFFFAOYSA-N tributyl phosphite Chemical compound CCCCOP(OCCCC)OCCCC XTTGYFREQJCEML-UHFFFAOYSA-N 0.000 description 1
- FICPQAZLPKLOLH-UHFFFAOYSA-N tricyclohexyl phosphite Chemical compound C1CCCCC1OP(OC1CCCCC1)OC1CCCCC1 FICPQAZLPKLOLH-UHFFFAOYSA-N 0.000 description 1
- RXJKFRMDXUJTEX-UHFFFAOYSA-N triethylphosphine Chemical compound CCP(CC)CC RXJKFRMDXUJTEX-UHFFFAOYSA-N 0.000 description 1
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 1
- 125000006387 trifluoromethyl pyridyl group Chemical group 0.000 description 1
- ZYMHKOVQDOFPHH-UHFFFAOYSA-N trimethoxy(oct-1-enyl)silane Chemical compound CCCCCCC=C[Si](OC)(OC)OC ZYMHKOVQDOFPHH-UHFFFAOYSA-N 0.000 description 1
- OWUTVCVPEOXXHD-UHFFFAOYSA-N trimethoxy(prop-1-enyl)silane Chemical compound CO[Si](OC)(OC)C=CC OWUTVCVPEOXXHD-UHFFFAOYSA-N 0.000 description 1
- LFRDHGNFBLIJIY-UHFFFAOYSA-N trimethoxy(prop-2-enyl)silane Chemical compound CO[Si](OC)(OC)CC=C LFRDHGNFBLIJIY-UHFFFAOYSA-N 0.000 description 1
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
-
- 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
- C07F5/00—Compounds containing elements of Groups 3 or 13 of the Periodic Table
- C07F5/02—Boron compounds
- C07F5/022—Boron compounds without C-boron linkages
-
- 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
- C07F5/00—Compounds containing elements of Groups 3 or 13 of the Periodic Table
- C07F5/02—Boron compounds
- C07F5/027—Organoboranes and organoborohydrides
-
- 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
- C09B57/00—Other synthetic dyes of known constitution
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133617—Illumination with ultraviolet light; Luminescent elements or materials associated to the cell
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1018—Heterocyclic compounds
- C09K2211/1022—Heterocyclic compounds bridged by heteroatoms, e.g. N, P, Si or B
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/18—Metal complexes
- C09K2211/186—Metal complexes of the light metals other than alkali metals and alkaline earth metals, i.e. Be, Al or Mg
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
- H01L33/501—Wavelength conversion elements characterised by the materials, e.g. binder
- H01L33/502—Wavelength conversion materials
Definitions
- the present invention relates to a pyromethene boron complex, a color conversion composition, a color conversion film, a light source unit including the same, a display, and illumination.
- Multi-color technology based on color conversion is being actively studied for application to liquid crystal displays, organic EL displays, and lighting.
- the color conversion is to convert light emitted from the light emitter into light having a longer wavelength, for example, to convert blue light emission into green or red light emission.
- a film having this color conversion function into a film and combining it with, for example, a blue light source, it is possible to extract the three primary colors of blue, green, and red from the blue light source, that is, to extract white light.
- a white light source combining such a blue light source and a film having a color conversion function is used as a light source unit, and a full color display can be manufactured by combining a liquid crystal driving portion and a color filter. If there is no liquid crystal driving part, it can be used as a white light source as it is, and can be applied as a white light source such as LED lighting.
- An improvement in color reproducibility is an issue with liquid crystal displays.
- it is effective to narrow the half-value width of each emission spectrum of blue, green, and red of the light source unit and increase the color purity of each color of blue, green, and red.
- a technique using quantum dots made of inorganic semiconductor fine particles as a component of a color conversion composition has been proposed (for example, see Patent Document 1).
- the technology using these quantum dots certainly has a narrow half-value width of the emission spectrum of green and red and improves color reproducibility.
- quantum dots are weak against heat, moisture and oxygen in the air, and have sufficient durability. It was not.
- a technique using an organic light-emitting material as a component of the color conversion composition instead of quantum dots has been proposed.
- techniques using an organic light emitting material as a component of the color conversion composition include those using a pyridine-phthalimide condensate (for example, see Patent Document 2), and those using a coumarin derivative (for example, see Patent Document 3).
- the red light emitting material those using a perylene derivative so far (for example, see Patent Document 4), those using a rhodamine derivative (for example, see Patent Document 5), those using a pyromethene derivative (for example, Patent Document 6) To 7).
- the problem to be solved by the present invention is to improve color reproducibility, luminous efficiency and durability in a color conversion composition used for liquid crystal displays and LED lighting.
- the present invention is a color conversion composition that converts incident light into light having a longer wavelength than the incident light, and includes a compound represented by the general formula (1) and a binder resin. It is a conversion composition.
- R 1 to R 7 may be the same or different and each represents hydrogen, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted heterocyclic group, a substituted or unsubstituted alkenyl group.
- R 8 and R 9 may be the same or different and each represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted heterocyclic group, a substituted or unsubstituted alkenyl group, substituted Or an unsubstituted cycloalkenyl group, a substituted or unsubstituted alkynyl group, a hydroxyl group, a thiol group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted alkylthio group, a substituted or unsubstituted aryl ether group, a substituted or unsubstituted Selected from among the arylthioether groups, substituted or unsubstituted aryl groups, substituted or unsubstituted heteroaryl groups, and halogens.
- R 1 to R 7 is an electron withdrawing group.
- R 1 , R 3 , R 4 and R 6 may be the same or different and each is hydrogen, halogen, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted group Alkoxy group, substituted or unsubstituted aryl ether group, substituted or unsubstituted heterocyclic group, substituted or unsubstituted alkylthio group, substituted or unsubstituted arylthioether group, substituted or unsubstituted amino group, substituted or unsubstituted A silyl group or a cyano group, X is C—R 7 , and R 7 is either a substituted or unsubstituted aryl group or a substituted or unsubsti
- R 1 to R 6 may be the same or different and each represents hydrogen, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted heterocyclic group, a substituted or unsubstituted alkenyl.
- R 8 and R 9 are a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted heterocyclic group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted cycloalkenyl group, Substituted or unsubstituted alkynyl group, hydroxyl group, thiol group, substituted or unsubstituted alkoxy group, substituted or unsubstituted alkylthio group, substituted or unsubstituted aryl ether group, substituted or unsubstituted aryl thioether group, substituted or unsubstituted It is selected from a substituted aryl group, a substituted or unsubstituted heteroaryl group, and halogen.
- L 1 and L 2 are a single bond, a substituted or unsubstituted arylene group, or a substituted or unsubstituted heteroarylene group.
- x and y are integers of 1 to 5.
- R 17 is an electron withdrawing group, and at least one of R 1 to R 6 is an electron withdrawing group.
- the color conversion film using the pyromethene boron complex or the color conversion composition of the present invention has both high color purity and durability, it is possible to achieve both color reproducibility and durability.
- the schematic cross section which shows an example of the color conversion film of this invention The schematic cross section which shows an example of the color conversion film of this invention.
- the schematic cross section which shows an example of the color conversion film of this invention The schematic cross section which shows an example of the color conversion film of this invention.
- the schematic cross section which shows an example of the color conversion film of this invention The absorption spectrum of the compound of Synthesis Example 1.
- One feature of the present invention is a color conversion composition that converts incident light into light having a longer wavelength than the incident light, and includes a compound represented by the general formula (1) and a binder resin.
- a color conversion composition that converts incident light into light having a longer wavelength than the incident light, and includes a compound represented by the general formula (1) and a binder resin.
- Another feature of the present invention is a pyromethene boron complex represented by the general formula (3).
- R 1 to R 7 may be the same or different and each represents hydrogen, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted heterocyclic group, a substituted or unsubstituted alkenyl group.
- R 8 and R 9 may be the same or different and each represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted heterocyclic group, a substituted or unsubstituted alkenyl group, substituted Or an unsubstituted cycloalkenyl group, a substituted or unsubstituted alkynyl group, a hydroxyl group, a thiol group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted alkylthio group, a substituted or unsubstituted aryl ether group, a substituted or unsubstituted Selected from among the arylthioether groups, substituted or unsubstituted aryl groups, substituted or unsubstituted heteroaryl groups, and halogens.
- R 1 to R 7 is an electron withdrawing group.
- R 1 , R 3 , R 4 and R 6 may be the same or different and each is hydrogen, halogen, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted group Alkoxy group, substituted or unsubstituted aryl ether group, substituted or unsubstituted heterocyclic group, substituted or unsubstituted alkylthio group, substituted or unsubstituted arylthioether group, substituted or unsubstituted amino group, substituted or unsubstituted A silyl group or a cyano group, X is C—R 7 , and R 7 is either a substituted or unsubstituted aryl group or a substituted or unsubsti
- hydrogen may be deuterium.
- a substituted or unsubstituted aryl group having 6 to 40 carbon atoms is 6 to 40 carbon atoms including the number of carbon atoms contained in the substituent group substituted on the aryl group. The same applies to the other substituents.
- the substituents in the case of substitution include alkyl groups, cycloalkyl groups, heterocyclic groups, alkenyl groups, cycloalkenyl groups, alkynyl groups, hydroxyl groups, thiol groups, alkoxy groups, alkylthio groups.
- Aryl ether group, aryl thioether group, aryl group, heteroaryl group, halogen, cyano group, aldehyde group, carbonyl group, carboxyl group, oxycarbonyl group, carbamoyl group, amino group, nitro group, silyl group, siloxanyl group, boryl Group and a phosphine oxide group are preferable, and specific substituents that are preferable in the description of each substituent are preferable. Moreover, these substituents may be further substituted with the above-mentioned substituents.
- unsubstituted means that a hydrogen atom or a deuterium atom is substituted.
- the alkyl group represents, for example, a saturated aliphatic hydrocarbon group such as a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, a sec-butyl group, or a tert-butyl group, which is a substituent. It may or may not have. There are no particular limitations on the additional substituent when it is substituted, and examples thereof include an alkyl group, a halogen, an aryl group, a heteroaryl group, and the like, and this point is common to the following description.
- the number of carbon atoms of the alkyl group is not particularly limited, but is preferably 1 or more and 20 or less, more preferably 1 or more and 8 or less, from the viewpoint of availability and cost.
- the cycloalkyl group refers to, for example, a saturated alicyclic hydrocarbon group such as a cyclopropyl group, a cyclohexyl group, a norbornyl group, an adamantyl group, which may or may not have a substituent.
- the number of carbon atoms in the alkyl group moiety is not particularly limited, but is preferably in the range of 3 or more and 20 or less.
- the heterocyclic group refers to an aliphatic ring having atoms other than carbon, such as a pyran ring, a piperidine ring, and a cyclic amide, in the ring, which may or may not have a substituent. .
- carbon number of a heterocyclic group is not specifically limited, Preferably it is the range of 2-20.
- alkenyl group refers to an unsaturated aliphatic hydrocarbon group containing a double bond such as a vinyl group, an allyl group, or a butadienyl group, which may or may not have a substituent.
- carbon number of an alkenyl group is not specifically limited, Preferably it is the range of 2-20.
- the cycloalkenyl group refers to an unsaturated alicyclic hydrocarbon group containing a double bond such as a cyclopentenyl group, a cyclopentadienyl group, or a cyclohexenyl group, which may have a substituent. You don't have to.
- the alkynyl group indicates, for example, an unsaturated aliphatic hydrocarbon group containing a triple bond such as an ethynyl group, which may or may not have a substituent.
- the number of carbon atoms of the alkynyl group is not particularly limited, but is preferably in the range of 2 or more and 20 or less.
- the alkoxy group refers to, for example, a functional group having an aliphatic hydrocarbon group bonded through an ether bond such as a methoxy group, an ethoxy group, or a propoxy group, and the aliphatic hydrocarbon group may have a substituent. It may not have.
- carbon number of an alkoxy group is not specifically limited, Preferably it is the range of 1-20.
- the alkylthio group is a group in which an oxygen atom of an ether bond of an alkoxy group is substituted with a sulfur atom.
- the hydrocarbon group of the alkylthio group may or may not have a substituent. Although carbon number of an alkylthio group is not specifically limited, Preferably it is the range of 1-20.
- An aryl ether group refers to a functional group to which an aromatic hydrocarbon group is bonded via an ether bond, such as a phenoxy group, and the aromatic hydrocarbon group may or may not have a substituent. Good. Although carbon number of an aryl ether group is not specifically limited, Preferably, it is the range of 6-40.
- the aryl thioether group is a group in which an oxygen atom of an ether bond of an aryl ether group is substituted with a sulfur atom.
- the aromatic hydrocarbon group in the aryl ether group may or may not have a substituent. Although carbon number of an aryl ether group is not specifically limited, Preferably, it is the range of 6-40.
- the aryl group is, for example, phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, benzofluorenyl group, dibenzofluorenyl group, phenanthryl group, anthracenyl group, benzophenanthryl group, benzoanthracene group.
- An aromatic hydrocarbon group such as a nyl group, a chrycenyl group, a pyrenyl group, a fluoranthenyl group, a triphenylenyl group, a benzofluoranthenyl group, a dibenzoanthracenyl group, a perylenyl group, or a helicenyl group.
- a phenyl group, a biphenyl group, a terphenyl group, a naphthyl group, a fluorenyl group, a phenanthryl group, an anthracenyl group, a pyrenyl group, a fluoranthenyl group, and a triphenylenyl group are preferable.
- the aryl group may or may not have a substituent. Although carbon number of an aryl group is not specifically limited, Preferably it is 6-40, More preferably, it is the range of 6-30.
- the aryl group is preferably a phenyl group, a biphenyl group, a terphenyl group, a naphthyl group, a fluorenyl group, a phenanthryl group, or an anthracenyl group, and a phenyl group, a biphenyl group, A terphenyl group and a naphthyl group are more preferable. More preferred are a phenyl group, a biphenyl group, and a terphenyl group, and a phenyl group is particularly preferred.
- the aryl group is preferably a phenyl group, a biphenyl group, a terphenyl group, a naphthyl group, a fluorenyl group, a phenanthryl group, or an anthracenyl group.
- a phenyl group and a naphthyl group are more preferable. Particularly preferred is a phenyl group.
- the heteroaryl group is, for example, pyridyl group, furanyl group, thiophenyl group, quinolinyl group, isoquinolinyl group, pyrazinyl group, pyrimidyl group, pyridazinyl group, triazinyl group, naphthyridinyl group, cinnolinyl group, phthalazinyl group, quinoxalinyl group, quinazolinyl group, Benzofuranyl group, benzothiophenyl group, indolyl group, dibenzofuranyl group, dibenzothiophenyl group, carbazolyl group, benzocarbazolyl group, carbolinyl group, indolocarbazolyl group, benzofurocarbazolyl group, benzothienocarba Zolyl group, dihydroindenocarbazolyl group, benzoquinolinyl group, acridinyl group, dibenzoacridin
- the naphthyridinyl group is any of 1,5-naphthyridinyl group, 1,6-naphthyridinyl group, 1,7-naphthyridinyl group, 1,8-naphthyridinyl group, 2,6-naphthyridinyl group, and 2,7-naphthyridinyl group.
- the heteroaryl group may or may not have a substituent. Although carbon number of heteroaryl group is not specifically limited, Preferably it is 2-40, More preferably, it is the range of 2-30.
- the heteroaryl group includes a pyridyl group, furanyl group, thiophenyl group, quinolinyl group, pyrimidyl group, triazinyl group, benzofuranyl group, benzothiophenyl group, indolyl group , A dibenzofuranyl group, a dibenzothiophenyl group, a carbazolyl group, a benzimidazolyl group, an imidazopyridyl group, a benzoxazolyl group, a benzothiazolyl group, and a phenanthrolinyl group, preferably a pyridyl group, a furanyl group, a thiophenyl group, and a quinolinyl group. More preferred. Particularly preferred is a pyridyl group.
- the heteroaryl group includes a pyridyl group, furanyl group, thiophenyl group, quinolinyl group, pyrimidyl group, triazinyl group, benzofuranyl group, benzothiophenyl group, indolyl group, Dibenzofuranyl group, dibenzothiophenyl group, carbazolyl group, benzimidazolyl group, imidazopyridyl group, benzoxazolyl group, benzothiazolyl group, phenanthrolinyl group are preferable, pyridyl group, furanyl group, thiophenyl group, quinolinyl group are more preferable. Particularly preferred is a pyridyl group.
- Halogen refers to an atom selected from fluorine, chlorine, bromine and iodine.
- the carbonyl group, carboxyl group, oxycarbonyl group and carbamoyl group may or may not have a substituent.
- substituents include an alkyl group, a cycloalkyl group, an aryl group, and a heteroaryl group, and these substituents may be further substituted.
- the ester group indicates a functional group having a substituent bonded thereto through an ester bond such as an alkyl group, a cycloalkyl group, an aryl group, or a heteroaryl group, and this substituent may be further substituted.
- carbon number of an ester group is not specifically limited, Preferably it is the range of 1-20. More specifically, examples include a methyl ester group, an ethyl ester group, a propyl ester group, a butyl ester group, an isopropyl ester group, a hexyl ester group, and a phenyl ester group.
- the amide group indicates a functional group having a substituent bonded thereto through an amide bond such as an alkyl group, a cycloalkyl group, an aryl group, or a heteroaryl group, and this substituent may be further substituted.
- carbon number of an amide group is not specifically limited, Preferably it is the range of 1-20. More specifically, a methylamide group, an ethylamide group, a propylamide group, a butylamide group, an isopropylamide group, a hexylamide group, a phenylamide group, and the like can be given.
- An amino group is a substituted or unsubstituted amino group.
- substituent in the case of substitution include an aryl group, a heteroaryl group, a linear alkyl group, and a branched alkyl group.
- aryl group and heteroaryl group a phenyl group, a naphthyl group, a pyridyl group, and a quinolinyl group are preferable. These substituents may be further substituted.
- carbon number is not specifically limited, Preferably it is 2-50, More preferably, it is 6-40, Most preferably, it is the range of 6-30.
- silyl groups include trimethylsilyl groups, triethylsilyl groups, tert-butyldimethylsilyl groups, propyldimethylsilyl groups, vinyldimethylsilyl groups, and other alkylsilyl groups, phenyldimethylsilyl groups, tert-butyldiphenylsilyl groups, An arylsilyl group such as a phenylsilyl group or a trinaphthylsilyl group is shown. Substituents on silicon may be further substituted. Although carbon number of a silyl group is not specifically limited, Preferably it is the range of 1-30.
- the siloxanyl group refers to a silicon compound group via an ether bond such as a trimethylsiloxanyl group. Substituents on silicon may be further substituted.
- the boryl group is a substituted or unsubstituted boryl group.
- substituent in the case of substitution include an aryl group, a heteroaryl group, a linear alkyl group, a branched alkyl group, an aryl ether group, an alkoxy group, and a hydroxyl group, and among them, an aryl group and an aryl ether group are preferable.
- the phosphine oxide group is a group represented by —P ( ⁇ O) R 10 R 11 .
- R 10 R 11 is selected from the same group as R 1 to R 9 .
- Acyl group refers to a functional group to which a substituent is bonded via a carbonyl bond such as an alkyl group, a cycloalkyl group, an aryl group, and a heteroaryl group, and this substituent may be further substituted.
- the number of carbon atoms of the acyl group is not particularly limited, but is preferably in the range of 1 or more and 20 or less. More specifically, an acetyl group, a propionyl group, a benzoyl group, an acrylyl group, and the like can be given.
- the sulfonyl group refers to a functional group in which, for example, an alkyl group, a cycloalkyl group, an aryl group, a heteroaryl group, and the like are bonded to each other via a —S ( ⁇ O) 2 — bond. May be.
- Arylene group refers to a divalent or higher valent group derived from an aromatic hydrocarbon group such as benzene, naphthalene, biphenyl, fluorene, phenanthrene, etc., which may or may not have a substituent.
- a divalent or trivalent arylene group is preferable.
- Specific examples of the arylene group include a phenylene group, a biphenylene group, and a naphthylene group.
- the heteroarylene group is a divalent or higher valent group derived from an aromatic group having one or more atoms other than carbon in the ring, such as pyridine, quinoline, pyrimidine, pyrazine, triazine, quinoxaline, quinazoline, dibenzofuran, dibenzothiophene. This may or may not have a substituent.
- a divalent or trivalent heteroarylene group is preferred.
- the number of carbon atoms of the heteroarylene group is not particularly limited, but is preferably in the range of 2-30.
- heteroarylene group examples include 2,6-pyridylene group, 2,5-pyridylene group, 2,4-pyridylene group, 3,5-pyridylene group, 3,6-pyridylene group, 2,4, 6-pyridylene group, 2,4-pyrimidinylene group, 2,5-pyrimidinylene group, 4,6-pyrimidinylene group, 4,6-pyrimidinylene group, 2,4,6-pyrimidinylene group, 2,4,6-triazinylene group 4,6-dibenzofuranylene group, 2,6-dibenzofuranylene group, 2,8-dibenzofuranylene group and 3,7-dibenzofuranylene group.
- the electron-withdrawing group is also called an electron-accepting group, and is an atomic group that attracts electrons from a substituted atomic group by an induced effect or a resonance effect in organic electron theory.
- Examples of the electron-withdrawing group include those that take a positive value as the Hammett's rule substituent constant ( ⁇ p (para)).
- the Hammett's rule substituent constant ( ⁇ p (para)) can be cited from the Chemical Handbook, Basic Revision 5 (II-380).
- a phenyl group also takes a positive value
- the phenyl group is not included in the electron withdrawing group of the present application.
- electron withdrawing groups include, for example, -F ( ⁇ p: +0.06), -Cl ( ⁇ p: +0.23), -Br ( ⁇ p: +0.23), -I ( ⁇ p: +0.18),- CO 2 R 12 ( ⁇ p: when R 12 is an ethyl group +0.45), —CONH 2 ( ⁇ p: +0.38), —COR 12 ( ⁇ p: when R 12 is a methyl group +0.49), —CF 3 ( ⁇ p: +0.50), - SO 2 R 12 ( ⁇ p: when R 12 is a methyl group +0.69), - NO 2 ( ⁇ p : +0.81) , and the like.
- R 12 each independently represents a hydrogen atom, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms, substituted or unsubstituted
- a substituted alkyl group having 1 to 30 carbon atoms and a substituted or unsubstituted cycloalkyl group having 1 to 30 carbon atoms are represented. Specific examples of these groups include the same examples as described above.
- Preferred electron withdrawing groups include fluorine, fluorine-containing aryl groups, fluorine-containing heteroaryl groups, fluorine-containing alkyl groups, substituted or unsubstituted acyl groups, substituted or unsubstituted ester groups, substituted or unsubstituted amide groups, and substituted groups. Or an unsubstituted sulfonyl group or a cyano group is mentioned. This is because they are hardly chemically decomposed.
- More preferred electron withdrawing groups include fluorine-containing alkyl groups, substituted or unsubstituted acyl groups, substituted or unsubstituted ester groups, and cyano groups. This is because concentration quenching can be prevented and the quantum yield of light emission can be improved. Particularly preferred is a substituted or unsubstituted ester group.
- R 12 include a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted carbon group having 1 to There are 30 cycloalkyl groups. More preferred substituents include substituted or unsubstituted alkyl groups having 1 to 30 carbon atoms from the viewpoint of solubility.
- an ethyl group is preferably used.
- the compound represented by the general formula (1) has a pyromethene boron complex skeleton. Since the pyromethene boron complex skeleton is a strong and highly planar skeleton, it exhibits a high fluorescence quantum yield, and the peak half-value width of the emission spectrum is small, thus achieving efficient color conversion and high color purity. Can do.
- the compound represented by the general formula (1) satisfies at least one of the above (A) and (B).
- (A) is satisfied is described as Embodiment 1A
- (B) is satisfied is described as Embodiment 1B.
- the compound represented by the general formula (1) always has an electron-withdrawing group in the pyromethene boron complex skeleton.
- the contained pyromethene boron complex is excited by excitation light and emits light having a wavelength different from that of the excitation light, thereby performing color conversion of light.
- the electron density of the pyromethene boron complex skeleton can be lowered.
- the compound represented by the general formula (1) in Embodiment 1A includes Embodiment 1A-1 in which at least one of R 1 to R 6 is an electron-withdrawing group, and X is C—R 7 .
- Embodiment 1A-2 in which R 7 is an electron-withdrawing group and Embodiment 1A-3 in which the compound is represented by the general formula (3).
- R 1 to R 6 may be the same or different and each represents hydrogen, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted heterocyclic group, a substituted or unsubstituted alkenyl group.
- R 8 and R 9 are a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted heterocyclic group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted cycloalkenyl group, Substituted or unsubstituted alkynyl group, hydroxyl group, thiol group, substituted or unsubstituted alkoxy group, substituted or unsubstituted alkylthio group, substituted or unsubstituted aryl ether group, substituted or unsubstituted aryl thioether group, substituted or unsubstituted It is selected from a substituted aryl group, a substituted or unsubstituted heteroaryl group, and halogen.
- L 1 and L 2 are a single bond, a substituted or unsubstituted arylene group, or a substituted or unsubstituted heteroarylene group.
- x and y are integers of 1 to 5.
- R 17 is an electron withdrawing group, and at least one of R 1 to R 6 is an electron withdrawing group.
- Embodiment 1A-1 In Embodiment 1A-1, since the electron-withdrawing group is directly substituted with the pyromethene boron complex skeleton, the electron density of the pyromethene boron complex skeleton can be significantly reduced. Thereby, the stability with respect to oxygen improves and durability can be improved significantly.
- X is C—R 7 and R 7 is a substituted or unsubstituted aryl group or a substituted or unsubstituted heteroaryl group. In this case, durability can be further improved.
- R 7 is preferably a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted terphenyl group, or a substituted or unsubstituted naphthyl group.
- a phenyl group, a substituted or unsubstituted biphenyl group, and a substituted or unsubstituted terphenyl group are more preferable. Particularly preferred is a substituted or unsubstituted phenyl group.
- R 7 is preferably a moderately bulky substituent. When R 7 has a certain amount of bulkiness, aggregation of molecules can be prevented, and luminous efficiency and durability are further improved.
- a more preferable example of such a bulky substituent includes a structure represented by the following general formula (2).
- r is hydrogen, alkyl group, cycloalkyl group, heterocyclic group, alkenyl group, cycloalkenyl group, alkynyl group, hydroxyl group, thiol group, alkoxy group, alkylthio group, aryl ether group, aryl thioether group, aryl group, heteroaryl It is selected from the group consisting of a group and an amino group.
- k is an integer of 1 to 3. When k is 2 or more, r may be the same or different.
- R is preferably a substituted or unsubstituted aryl group or a substituted or unsubstituted heteroaryl group.
- r is a substituted or unsubstituted aryl group or a substituted or unsubstituted heteroaryl group, concentration quenching due to aggregation can be prevented, and a high fluorescence quantum yield can be obtained.
- R is preferably a substituted or unsubstituted aryl group from the viewpoint of giving a higher fluorescence quantum yield.
- aryl groups a phenyl group and a naphthyl group are particularly preferable examples.
- k in the general formula (2) is preferably 1 or 2, and k is more preferably 2 from the viewpoint of further preventing aggregation of molecules.
- the alkyl group in this case, a methyl group, an ethyl group, and a tert-butyl group are particularly preferred from the viewpoint of thermal stability.
- r is a substituted or unsubstituted alkyl group or a substituted or unsubstituted alkoxy group in terms of controlling the fluorescence wavelength or absorption wavelength, increasing the compatibility with the solvent, or improving the light emission efficiency.
- a methyl group, an ethyl group, a tert-butyl group, and a methoxy group are more preferable. From the viewpoint of dispersibility, a tert-butyl group and a methoxy group are particularly preferable, and quenching due to aggregation of molecules is prevented.
- Embodiment 1A-2 In Embodiment 1A-2, at least one of R 1 to R 6 is preferably an electron withdrawing group. Thereby, the electron density of the pyromethene boron complex skeleton can be lowered. And the stability with respect to oxygen improves more and durability can be improved more.
- Embodiment 1A-3 In Embodiment 1A-3, the electron density of the pyromethene boron complex can be further reduced by introducing an electron withdrawing group not only into R 1 to R 6 but also into R 17 . Thereby, the stability with respect to oxygen is greatly improved, and the durability can be further improved.
- L 1 is preferably a substituted or unsubstituted arylene group from the viewpoint of light stability.
- L 1 is a substituted or unsubstituted arylene group
- the substituent L 1 greatly affects the durability of the compound represented by the general formula (3), that is, the decrease in emission intensity over time.
- L 1 is a group that is rigid and has a low degree of freedom of movement and is unlikely to cause aggregation, thereby improving durability.
- L 1 is preferably a substituted or unsubstituted phenylene group from the viewpoint of giving a higher fluorescence quantum yield, being harder to thermally decompose, and from the viewpoint of light stability.
- the arylene group is preferably a phenylene group, a biphenylene group, or a naphthylene group from the viewpoint of not impairing the emission wavelength.
- L 2 is a substituted or unsubstituted phenylene group. Further, since L 2 is a substituted or unsubstituted phenylene group, aggregation of molecules can be prevented, and luminous efficiency and durability are further improved.
- R 17 can appropriately lower the electron density of the pyromethene boron complex. Thereby, the stability with respect to oxygen improves and durability can be improved.
- one R 17 having electron withdrawing property the electron density of the pyromentene boron complex represented by the general formula (3) is appropriately reduced. As a result, durability can be improved while maintaining a high fluorescence quantum yield.
- x + y 3. That is, it is also preferable that two R 17 are contained in the general formula (3).
- the electron density of the pyromentene boron complex represented by the general formula (3) is greatly reduced. As a result, durability can be further improved.
- the entire substituent becomes bulky and can prevent aggregation of molecules, resulting in a high fluorescence quantum yield. The durability can be further improved while maintaining.
- x and y are preferably 1 or 2.
- x and y are preferably 1 to 5.
- the number of R 17 can be limited, and a decrease in fluorescence quantum yield due to molecular vibration of the atomic group of R 7 can be suppressed, so that a high fluorescence quantum yield is expressed.
- R 17 is fluorine
- since fluorine has one atom the decrease in fluorescence quantum yield due to molecular vibration hardly occurs in the first place, and the effect of improving durability is greater. Therefore, when R 17 is fluorine In the formula, x and y are preferably 1 to 5.
- R 1 , R 3 , R 4 and R 6 may all be the same or different, and each may be a substituted or unsubstituted alkyl group. Further, there is a case where L 1 is a substituted or unsubstituted arylene group, L 2 is a single bond, a substituted or unsubstituted arylene group, and x and y are 1 or 2.
- R 1 , R 3 , R 4 and R 6 may all be the same or different, and may be substituted or unsubstituted.
- L 1 is a substituted or unsubstituted arylene group
- L 2 is a single bond
- x and y are 1 or 2
- R 17 is a halogen atom.
- the compound represented by the general formula (1) in Embodiment 1A has a pyromethene boron complex skeleton and an electron-withdrawing group in the molecule, so that high-efficiency light emission, high color purity, and high durability are achieved. It is possible to achieve both.
- Embodiment 1A Since the compound represented by the general formula (1) in Embodiment 1A exhibits a high fluorescence quantum yield and has a small peak half-value width of the emission spectrum, it can achieve efficient color conversion and high color purity. it can.
- the compound represented by the general formula (1) in Embodiment 1A introduces an appropriate substituent at an appropriate position, so that luminous efficiency, color purity, thermal stability, light stability, dispersibility, etc. Various properties and physical properties can be adjusted.
- R 2 and R 5 are more preferably electron-withdrawing groups. This is because the stability of the compound represented by the general formula (1) in Embodiment 1A to oxygen can be further improved and durability can be greatly improved without impairing the light emission efficiency and color purity.
- R 1 , R 3 , R 4, and R 6 is a substituted or unsubstituted aryl group.
- the light stability is further improved.
- a phenyl group, a biphenyl group, a terphenyl group, and a naphthyl group are preferable, a phenyl group and a biphenyl group are more preferable, and a phenyl group is particularly preferable.
- the heteroaryl group may be pyridyl Group, quinolinyl group and thiophenyl group are preferred, and pyridyl group and quinolinyl group are more preferred. Particularly preferred is a pyridyl group.
- the substituent R 7 greatly affects the durability reduction of the compound represented by the general formula (1). That is, when R 7 is hydrogen, the reactivity of this hydrogen is high, and it easily reacts with moisture and oxygen in the air, causing decomposition. In addition, when R 7 is a substituent having a large degree of freedom of movement of a molecular chain such as an alkyl group, for example, the reactivity is certainly lowered, but the compounds aggregate with time in the composition. In particular, the emission intensity is reduced due to concentration quenching. Therefore, R 7 is either a substituted or unsubstituted aryl group or a substituted or unsubstituted heteroaryl group that is rigid and has a low degree of freedom of movement and is unlikely to cause aggregation.
- a substituted or unsubstituted aryl group is preferable from the viewpoint of giving a higher fluorescence quantum yield, being harder to thermally decompose, and stability from excitation light.
- the aryl groups from the viewpoint of not impairing the emission wavelength, a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenylyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted fluorenyl group, a substituted or unsubstituted group Spirofluorenyl group, substituted or unsubstituted anthracenyl group, substituted or unsubstituted pyrenyl group, substituted or unsubstituted phenanthrenyl group, substituted or unsubstituted triphenylenyl group, substituted or unsubstituted chrycenyl group, substituted or unsubstitute
- R 7 is preferably a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted terphenyl group, or a substituted or unsubstituted naphthyl group.
- a phenyl group, a substituted or unsubstituted biphenyl group, and a substituted or unsubstituted terphenyl group are more preferable. Particularly preferred is a substituted or unsubstituted phenyl group.
- bonding to a substituted phenyl group it is preferable to bond the substituent to the meta position or the para position with respect to the bonding position with the pyromethene skeleton from the viewpoint of reducing steric hindrance and suppressing bonding twist.
- R 7 is preferably a moderately bulky substituent. When R 7 has a certain amount of bulkiness, aggregation of molecules can be prevented, and luminous efficiency and durability are further improved.
- a more preferable example of such a bulky substituent includes a structure represented by the following general formula (2).
- r is hydrogen, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted heterocyclic group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted cycloalkenyl group, substituted or Unsubstituted alkynyl group, substituted or unsubstituted alkoxy group, substituted or unsubstituted alkylthio group, substituted or unsubstituted aryl ether group, substituted or unsubstituted aryl thioether group, substituted or unsubstituted aryl group, substituted or Unsubstituted heteroaryl group, halogen, cyano group, substituted or unsubstituted acyl group, substituted or unsubstituted ester group, substituted or unsubstituted amide group, substituted or un
- R is preferably a substituted or unsubstituted aryl group or a substituted or unsubstituted heteroaryl group.
- r is a substituted or unsubstituted aryl group or a substituted or unsubstituted heteroaryl group, concentration quenching due to aggregation can be prevented, and a high fluorescence quantum yield can be obtained.
- R is preferably a substituted or unsubstituted aryl group from the viewpoint of giving a higher fluorescence quantum yield.
- aryl groups a phenyl group and a naphthyl group are particularly preferable examples.
- at least one of r is substituted with an alkyl group.
- alkyl group in this case, a methyl group, an ethyl group, and a tert-butyl group are particularly preferred from the viewpoint of thermal stability.
- r is preferably a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, or a halogen, More preferred are a methyl group, an ethyl group, a tert-butyl group, and a methoxy group. From the viewpoint of dispersibility, a tert-butyl group and a methoxy group are particularly preferable, and quenching due to aggregation of molecules is prevented.
- K in the general formula (2) is preferably 1 or 2.
- k in the general formula (2) is 1 or 2, since it has a moderate bulkiness, aggregation of molecules can be prevented, and luminous efficiency and durability are further improved.
- k is more preferably 2 from the viewpoint of further preventing aggregation of molecules.
- R 1 , R 3 , R 4 and R 6 are all hydrogen, at least one of R 1 , R 3 , R 4 and R 6 is a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group, In the case of a substituted or unsubstituted heteroaryl group, better thermal stability and light stability are exhibited.
- R 1 , R 3 , R 4 and R 6 is a substituted or unsubstituted alkyl group.
- R 1 , R 3 , R 4 and R 6 is a substituted or unsubstituted alkyl group, light emission with excellent color purity can be obtained.
- the alkyl group an alkyl group having 1 to 6 carbon atoms such as methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, sec-butyl group, tert-butyl group, pentyl group, and hexyl group is preferable.
- a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, a sec-butyl group, and a tert-butyl group are preferable. Further, from the viewpoint of preventing concentration quenching and improving the emission quantum yield, a sterically bulky tert-butyl group is more preferable.
- a methyl group is also preferably used from the viewpoint of ease of synthesis and availability of raw materials.
- R 1 , R 3 , R 4 and R 6 may all be the same or different, and a substituted or unsubstituted alkyl group is preferable because of good solubility in a binder resin and a solvent.
- the alkyl group is preferably a methyl group from the viewpoint of ease of synthesis and availability of raw materials.
- R 1 , R 3 , R 4 and R 6 may all be the same or different and when they are substituted or unsubstituted aryl groups or substituted or unsubstituted heteroaryl groups, better thermal stability and In order to exhibit light stability, R 1 , R 3 , R 4 and R 6 may be the same or different from each other, and more preferably a substituted or unsubstituted aryl group.
- R 1 , R 3 , R 4 and R 6 may all be the same or different, and in the case of a substituted or unsubstituted aryl group, for example, R 1 ⁇ R 4 , R 3 ⁇ R 6 , R It is preferable to introduce a plurality of types of substituents such as 1 ⁇ R 3 or R 4 ⁇ R 6 .
- ⁇ indicates a group having a different structure. Since an aryl group that affects the color purity and an aryl group that affects the efficiency can be introduced at the same time, fine adjustment is possible.
- R 1 ⁇ R 3 or R 4 ⁇ R 6 is preferable in terms of improving the light emission efficiency and the color purity in a balanced manner.
- One or more aryl groups that affect color purity can be introduced into each pyrrole ring on both sides, and aryl groups that affect efficiency can be introduced at other positions, thereby maximizing both properties be able to.
- an aryl group substituted with an electron donating group is preferable.
- the electron donating group include an alkyl group and an alkoxy group.
- an alkyl group having 1 to 8 carbon atoms or an alkoxy group having 1 to 8 carbon atoms is preferable, and a methyl group, an ethyl group, a tert-butyl group, or a methoxy group is more preferable.
- a tert-butyl group and a methoxy group are particularly preferable, and quenching due to aggregation of molecules is prevented.
- the substitution position of the substituent is not particularly limited, but it is preferable to bond at the meta position or the para position with respect to the bond position with the pyromethene skeleton because it is necessary to suppress the twist of the bond in order to improve the light stability.
- an aryl group having a bulky substituent such as a tert-butyl group, an adamantyl group, or a methoxy group is preferable.
- R 1 , R 3 , R 4 and R 6 may all be the same or different, and in the case of a substituted or unsubstituted aryl group, they are each selected from the following Ar-1 to Ar-6: Is preferred.
- preferred combinations of R 1 , R 3 , R 4 and R 6 include those shown in Table 1-1 to Table 1-11, but are not limited thereto.
- R 8 and R 9 are preferably an alkyl group, an aryl group, a heteroaryl group, fluorine, a fluorine-containing alkyl group, a fluorine-containing heteroaryl group or a fluorine-containing aryl group, which is stable against excitation light and has a higher fluorescence quantum yield. Therefore, it is more preferably a fluorine or fluorine-containing aryl group. In view of ease of synthesis, fluorine is more preferable.
- the fluorine-containing aryl group is an aryl group containing fluorine, and examples thereof include a fluorophenyl group, a trifluoromethylphenyl group, and a pentafluorophenyl group.
- the fluorine-containing heteroaryl group is a heteroaryl group containing fluorine, and examples thereof include a fluoropyridyl group, a trifluoromethylpyridyl group, and a trifluoropyridyl group.
- the fluorine-containing alkyl group is an alkyl group containing fluorine, and examples thereof include a trifluoromethyl group and a pentafluoroethyl group.
- the compound represented by the general formula (1) can be produced, for example, by the method described in JP-T-8-509471 and JP-A-2000-208262. That is, the target pyromethene metal complex is obtained by reacting a pyromethene compound and a metal salt in the presence of a base.
- a method of generating a carbon-carbon bond by using a coupling reaction between a halogenated derivative and a boronic acid or a boronic acid esterified derivative is exemplified. Is not to be done.
- an amino group or a carbazolyl group for example, there is a method of generating a carbon-nitrogen bond by using a coupling reaction between a halogenated derivative and an amine or a carbazole derivative under a metal catalyst such as palladium. Although it is mentioned, it is not limited to this.
- the compound represented by the general formula (1) in Embodiment 1B preferably exhibits light emission observed in a region having a peak wavelength of 500 nm or more and 580 nm or less by using excitation light.
- light emission observed in a region having a peak wavelength of 500 nm or more and 580 nm or less is referred to as “green light emission”.
- the compound represented by the general formula (1) in Embodiment 1B preferably exhibits green light emission by using excitation light having a wavelength in the range of 430 nm to 500 nm.
- excitation light having a wavelength in the range of 430 nm to 500 nm.
- the higher the excitation light energy the easier it is to cause decomposition of the material, but the excitation light in the wavelength range of 430 nm to 500 nm is relatively low excitation energy, which causes decomposition of the luminescent material in the color conversion composition.
- green light emission with good color purity is obtained.
- the compound represented by the general formula (1) in Embodiment 1A preferably exhibits light emission observed in a region having a peak wavelength of 500 nm or more and 580 nm or less by using excitation light.
- the compound represented by the general formula (1) in Embodiment 1A preferably exhibits green light emission by using excitation light having a wavelength in the range of 430 nm to 500 nm.
- excitation light having a wavelength in the range of 430 nm to 500 nm.
- the higher the excitation light energy the easier it is to cause decomposition of the material, but the excitation light in the wavelength range of 430 nm to 500 nm is relatively low excitation energy, which causes decomposition of the luminescent material in the color conversion composition.
- green light emission with good color purity is obtained.
- the compound represented by the general formula (1) in Embodiment 1A preferably exhibits light emission observed in a region having a peak wavelength of 580 nm or more and 750 nm or less by using excitation light.
- light emission observed in a region having a peak wavelength of 580 nm or more and 750 nm or less is referred to as “red light emission”.
- the compound represented by the general formula (1) in Embodiment 1A preferably emits red light by using excitation light having a wavelength in the range of 430 nm to 580 nm.
- excitation light having a wavelength in the range of 430 nm to 580 nm.
- the higher the excitation light energy the easier it is to cause decomposition of the material, but the excitation light in the wavelength range of 430 nm to 500 nm is relatively low excitation energy, which causes decomposition of the luminescent material in the color conversion composition.
- red light emission with good color purity is obtained.
- the color conversion composition of the present invention preferably contains a compound represented by the general formula (1) or (3) and a binder resin.
- the color conversion composition of the present invention can appropriately contain other compounds as necessary in addition to the compound represented by the general formula (1) or (3).
- an assist dopant such as rubrene may be contained in order to further increase the energy transfer efficiency from the excitation light to the compound represented by the general formula (1) or (3).
- the above-mentioned organic light emitting material can be added.
- known light-emitting materials such as inorganic phosphors, fluorescent pigments, fluorescent dyes, and quantum dots can be added in combination.
- organic light emitting materials other than the compound represented by the general formula (1) or (3) are shown below, but are not particularly limited thereto.
- the color conversion composition of the present invention it is preferable to exhibit light emission observed in a region having a peak wavelength of 500 nm or more and 580 nm or less by using excitation light.
- the color conversion composition of the present invention it is preferable to exhibit light emission observed in a region having a peak wavelength of 580 nm or more and 750 nm or less by using excitation light.
- a light emitting material that emits light having a peak wavelength of 500 nm or more and 580 nm or less by using excitation light hereinafter referred to as “light emitting material (a)”
- light emitting material (b) is a compound represented by the general formula (1) or (3). It is more preferable to use excitation light having a wavelength in the range of 430 nm to 500 nm.
- Examples of the luminescent material (a) include coumarin derivatives such as coumarin 6, coumarin 7, coumarin 153, cyanine derivatives such as indocyanine green, fluorescein derivatives such as fluorescein, fluorescein isothiocyanate, carboxyfluorescein diacetate, and phthalocyanine derivatives such as phthalocyanine green.
- coumarin derivatives such as coumarin 6, coumarin 7, coumarin 153
- cyanine derivatives such as indocyanine green
- fluorescein derivatives such as fluorescein, fluorescein isothiocyanate, carboxyfluorescein diacetate
- phthalocyanine derivatives such as phthalocyanine green.
- Perylene derivatives such as diisobutyl-4,10-dicyanoperylene-3,9-dicarboxylate, pyromethene derivatives, stilbene derivatives, oxazine derivatives, naphthalimide derivatives, pyrazine derivatives, benzimidazole derivatives, benzoxazole derivatives, benzothiazoles Derivatives, imidazopyridine derivatives, azole derivatives, compounds having condensed aryl rings such as anthracene, derivatives thereof, aromatic amine derivatives, Metal complex compounds, and the like as preferred but not particularly limited thereto.
- the pyromethene derivative is a particularly suitable compound because it gives high fluorescence quantum yield and emits light with high color purity.
- the compound represented by the general formula (1) has greatly improved durability. Therefore, it is preferable.
- Examples of the luminescent material (b) include cyanine derivatives such as 4-dicyanomethylene-2-methyl-6- (p-dimethylaminostyryl) -4H-pyran, rhodamine B, rhodamine 6G, rhodamine 101, sulforhodamine 101 and the like.
- Rhodamine derivatives pyridine derivatives such as 1-ethyl-2- (4- (p-dimethylaminophenyl) -1,3-butadienyl) -pyridinium-perchlorate, N, N′-bis (2,6-diisopropylphenyl) Perylene derivatives such as -1,6,7,12-tetraphenoxyperylene-3,4: 9,10-bisdicarbimide, porphyrin derivatives, pyromethene derivatives, oxazine derivatives, pyrazine derivatives, naphthacene and dibenzodiindeno Compounds having condensed aryl rings such as perylene, derivatives thereof, and organic metals Body compounds, and the like as preferred but not particularly limited thereto.
- pyromethene derivatives are particularly suitable compounds because they give high fluorescence quantum yield and emit light with high color purity.
- compounds represented by general formula (1) or (3) are: It
- both the light emitting materials (a) and (b) are compounds represented by the general formula (1) or (3), it is possible to achieve both high efficiency light emission, high color purity, and high durability. Therefore, it is preferable.
- the content of the compound represented by the general formula (1) or (3) in the color conversion composition of the present invention depends on the molar absorption coefficient of the compound, the fluorescence quantum yield, the absorption intensity at the excitation wavelength, and the thickness of the film to be produced. Although it depends on the transmittance, it is usually 1.0 ⁇ 10 ⁇ 4 to 30 parts by weight, and 1.0 ⁇ 10 ⁇ 3 to 10 parts by weight with respect to 100 parts by weight of the binder resin. More preferably, it is 1.0 ⁇ 10 ⁇ 2 to 5 parts by weight.
- the color conversion composition contains both the light emitting material (a) that emits green light and the light emitting material (b) that emits red light, part of the green light is converted into red light.
- w a and w b are weight percent relative to the weight of the binder resin.
- the binder resin forms a continuous phase and may be any material that is excellent in molding processability, transparency, heat resistance, and the like.
- binder resins include photocurable resist materials having reactive vinyl groups such as acrylic acid, methacrylic acid, polyvinyl cinnamate, and ring rubber, epoxy resins, silicone resins (silicone rubber, silicone gel, etc.
- Organopolysiloxane cured products including crosslinked products
- urea resins fluororesins, polycarbonate resins, acrylic resins, urethane resins, melamine resins, polyvinyl resins, polyamide resins, phenol resins, polyvinyl alcohol resins, cellulose resins, aliphatics
- These copolymer resins may be used.
- resins useful for the color conversion composition of the present invention can be obtained.
- a thermoplastic resin is more preferable because the film forming process is easy. From the viewpoints of transparency and heat resistance, an epoxy resin, a silicone resin, an acrylic resin, or a mixture thereof can be suitably used.
- a dispersing agent or leveling agent for stabilizing the coating film as an additive, and an adhesion aid such as a silane coupling agent as a film surface modifier. It is also possible to add inorganic particles such as silica particles or silicone fine particles as a color conversion material precipitation inhibitor.
- the binder resin is particularly preferably a silicone resin from the viewpoint of heat resistance.
- silicone resins addition reaction curable silicone compositions are preferred.
- the addition reaction curable silicone composition is heated and cured at room temperature or 50 to 200 ° C., and is excellent in transparency, heat resistance, and adhesiveness.
- the addition reaction curable silicone composition is formed by a hydrosilylation reaction of a compound containing an alkenyl group bonded to a silicon atom and a compound having a hydrogen atom bonded to a silicon atom.
- Such materials contain alkenyl groups bonded to silicon atoms such as vinyltrimethoxysilane, vinyltriethoxysilane, allyltrimethoxysilane, propenyltrimethoxysilane, norbornenyltrimethoxysilane, octenyltrimethoxysilane, etc.
- hydrogen atoms bonded to silicon atoms such as methylhydrogenpolysiloxane, dimethylpolysiloxane-CO-methylhydrogenpolysiloxane, ethylhydrogenpolysiloxane, methylhydrogenpolysiloxane-CO-methylphenylpolysiloxane, etc. Examples thereof include those formed by hydrosilylation reaction of the compounds having them.
- other publicly known ones such as those described in JP 2010-159411 A can be used.
- silicone sealing material for general LED applications as a commercially available product.
- Specific examples include OE-6630A / B and OE-6336A / B manufactured by Toray Dow Corning, and SCR-1012A / B and SCR-1016A / B manufactured by Shin-Etsu Chemical Co., Ltd.
- a hydrosilylation reaction retarder such as acetylene alcohol
- fine particles such as fumed silica, glass powder, quartz powder, etc.
- inorganic fillers and pigments such as titanium oxide, zirconia oxide, barium titanate, zinc oxide
- blend adhesiveness imparting agents such as a flame retardant, a heat resistant agent, antioxidant, a dispersing agent, a solvent, a silane coupling agent, and a titanium coupling agent.
- a low molecular weight polydimethylsiloxane component silicone oil or the like to the composition for producing the color conversion film.
- Such components are preferably added in an amount of 100 to 2,000 ppm, more preferably 500 to 1,000 ppm, based on the entire composition.
- the color conversion composition of the present invention includes a light stabilizer, an antioxidant, a processing and heat stabilizer, an ultraviolet absorber, etc. in addition to the compound represented by the general formula (1) or (3) and the binder resin. You may contain a light resistance stabilizer, silicone microparticles, and a silane coupling agent.
- Examples of the light stabilizer include tertiary amines, catechol derivatives, and nickel compounds, but are not particularly limited. These light stabilizers may be used alone or in combination.
- antioxidants examples include phenolic antioxidants such as 2,6-di-tert-butyl-p-cresol and 2,6-di-tert-butyl-4-ethylphenol, but are not particularly limited. It is not something. These antioxidants may be used alone or in combination.
- processing and heat stabilizer examples include phosphorus stabilizers such as tributyl phosphite, tricyclohexyl phosphite, triethylphosphine, and diphenylbutylphosphine, but are not particularly limited. These stabilizers may be used alone or in combination.
- Examples of the light resistance stabilizer include 2- (5-methyl-2-hydroxyphenyl) benzotriazole, 2- [2-hydroxy-3,5-bis ( ⁇ , ⁇ -dimethylbenzyl) phenyl] -2H- Although benzotriazoles, such as benzotriazole, can be mentioned, it is not specifically limited. These light resistance stabilizers may be used alone or in combination.
- the content of these additives in the color conversion composition of the present invention depends on the molar absorption coefficient of the compound, the fluorescence quantum yield and the absorption intensity at the excitation wavelength, and the thickness and transmittance of the film to be produced. It is 1.0 ⁇ 10 ⁇ 3 to 30 parts by weight, more preferably 1.0 ⁇ 10 ⁇ 2 to 15 parts by weight, with respect to 100 parts by weight of component (B), It is particularly preferably 1.0 ⁇ 10 ⁇ 1 part by weight or more and 10 parts by weight or less.
- the color conversion composition of the present invention may contain a solvent.
- the solvent is not particularly limited as long as it can adjust the viscosity of the resin in a fluid state and does not excessively affect the light emission and durability of the luminescent material.
- toluene is particularly preferably used because it does not affect the deterioration of the compound represented by the general formula (1) or (3) and there is little residual solvent after drying.
- a predetermined amount of the compound represented by the above general formula (1) or (3), a binder resin, a solvent, and the like is mixed.
- the color conversion composition is homogeneously mixed and dispersed by a homogenizer, a self-revolving stirrer, a three-roller, a ball mill, a planetary ball mill, a bead mill, etc.
- Defoaming is preferably carried out under vacuum or reduced pressure conditions after mixing or dispersing. Further, a specific component may be mixed in advance or a process such as aging may be performed. It is also possible to remove the solvent with an evaporator to obtain a desired solid content concentration.
- the configuration of the color conversion film is not limited as long as it contains a cured product of the color conversion composition.
- the cured product of the color conversion composition is preferably contained in the color conversion film as a layer obtained by curing the color conversion composition.
- a film having only a color conversion layer 11 as shown in FIG. 1, and a substrate layer 10 and a color conversion composition as shown in FIG. 2 are obtained by curing.
- the color conversion film may be further provided with a barrier film 12 as shown in FIG. 4 in order to prevent the color conversion layer from being deteriorated by oxygen, moisture or heat.
- Base material layer As a base material layer, a well-known metal, a film, glass, ceramic, paper etc. can be used without a restriction
- glass and resin films are preferably used because of the ease of producing the color conversion film and the ease of forming the color conversion film. Further, a film having a high strength is preferred so that there is no fear of breakage when handling a film-like substrate. Resin films are preferred in terms of their required characteristics and economy, and among these, plastic films selected from the group consisting of PET, polyphenylene sulfide, polycarbonate, and polypropylene are preferred in terms of economy and handleability.
- plastic films selected from the group consisting of PET, polyphenylene sulfide, polycarbonate, and polypropylene are preferred in terms of economy and handleability.
- a polyimide film is preferable in terms of heat resistance.
- the surface of the base material layer may be subjected to a release treatment in advance.
- the thickness of the base material layer is not particularly limited, but the lower limit is preferably 25 ⁇ m or more, and more preferably 38 ⁇ m or more. Moreover, as an upper limit, 5000 micrometers or less are preferable and 3000 micrometers or less are more preferable.
- Color conversion layer Next, an example of the manufacturing method of the color conversion layer of the color conversion film of this invention is demonstrated.
- the color conversion composition produced by the method described above is applied onto a substrate and dried.
- Application is reverse roll coater, blade coater, slit die coater, direct gravure coater, offset gravure coater, kiss coater, natural roll coater, air knife coater, roll blade coater, varibar roll blade coater, two stream coater, rod coater, wire
- a bar coater, an applicator, a dip coater, a curtain coater, a spin coater, a knife coater or the like can be used.
- the color conversion layer can be dried using a general heating device such as a hot air dryer or an infrared dryer.
- a general heating device such as a hot air dryer or an infrared dryer is used.
- the heating conditions are usually 40 to 250 ° C. for 1 minute to 5 hours, preferably 60 ° C. to 200 ° C. for 2 minutes to 4 hours. It is also possible to perform heat curing stepwise such as step cure.
- the substrate can be changed as necessary.
- examples of a simple method include a method of performing replacement using a hot plate, a method of using a vacuum laminator and a dry film laminator, and the like, but are not limited thereto.
- the thickness of the color conversion layer is not particularly limited, but is preferably 10 to 1000 ⁇ m. If it is smaller than 10 ⁇ m, there is a problem that the toughness of the film is reduced. If it exceeds 1000 ⁇ m, cracks are likely to occur and color conversion film molding is difficult. More preferably, it is 30 to 100 ⁇ m.
- the thickness of the color conversion film is preferably 200 ⁇ m or less, more preferably 100 ⁇ m or less, and even more preferably 50 ⁇ m or less.
- the film thickness of the color conversion film in the present invention is the film thickness (average film thickness) measured based on the method A of measuring thickness by mechanical scanning in JIS K7130 (1999) plastic-film and sheet-thickness measuring method. ).
- barrier film As the barrier film, it is appropriately used in the case of improving the gas barrier property with respect to the color conversion layer.
- films made of various resins such as polyvinylidene chloride, acrylic resins, silicon resins, melamine resins, urethane resins, fluorine resins, and polyvinyl alcohol resins such as saponified vinyl acetate can be given.
- Examples of the film having a barrier function against moisture include polyethylene, polypropylene, nylon, polyvinylidene chloride, vinylidene chloride and vinyl chloride, vinylidene chloride and acrylonitrile copolymer, fluororesin, and saponified vinyl acetate.
- Examples thereof include films made of various resins such as polyvinyl alcohol resins.
- the barrier film may be provided on both sides of the color conversion layer 11 as shown in FIG. 4, or may be provided only on one side.
- antireflection function antiglare function
- antireflection antiglare function hard coat function (friction resistance function)
- antistatic function antifouling function
- electromagnetic wave shielding function infrared ray
- An auxiliary layer having a cut function, an ultraviolet ray cut function, a polarization function, and a toning function may be further provided.
- any excitation light can be used as long as it emits light in a wavelength region that can be absorbed by a light-emitting substance to be mixed such as a compound represented by the general formula (1) or (3).
- a light-emitting substance to be mixed such as a compound represented by the general formula (1) or (3).
- any excitation light such as a hot cathode tube, a cold cathode tube, a fluorescent light source such as an inorganic EL, an organic electroluminescence element light source, an LED, an incandescent light source, or sunlight can be used in principle.
- LEDs are suitable excitation light
- blue LEDs having excitation light in the range of 430 to 500 nm are further suitable excitation light in terms of increasing the color purity of blue light for display and lighting applications.
- the excitation light may have one type of emission peak or two or more types of emission peaks, but in order to improve color purity, one having one type of emission peak is preferable. It is also possible to use a combination of a plurality of excitation light sources having different types of emission peaks.
- the light source unit in the present invention includes at least a light source and the above-described color conversion film.
- the arrangement method of the light source and the color conversion film is not particularly limited, and a configuration in which the light source and the color conversion film are in close contact may be employed, or a remote phosphor format in which the light source and the color conversion film are separated may be employed. Further, for the purpose of increasing the color purity, a configuration including a color filter may be taken.
- the excitation light in the range of 430 to 500 nm has a relatively low excitation energy and can prevent decomposition of the luminescent substance such as the compound represented by the general formula (1) or (3).
- a light emitting diode having a maximum light emission in the range of 500 nm is preferable.
- the light source is preferably 450 to 470 nm.
- the light emitting diode has a light emission wavelength peak in the range of 430 to 470 nm and a light emission wavelength region in the range of 400 to 500 nm, and the light emission spectrum satisfies the formula (1). preferable.
- ⁇ is the emission intensity at the emission wavelength peak of the emission spectrum
- ⁇ is the emission intensity at the emission wavelength peak + 15 nm wavelength.
- the light source unit in the present invention can be used for displays, lighting, interiors, signs, signboards, and the like, but is particularly preferably used for displays and lighting applications.
- the fluorescence spectrum of the compound was obtained when an F-2500 type spectrofluorometer (manufactured by Hitachi, Ltd.) was used, and the compound was dissolved in toluene at a concentration of 1 ⁇ 10 ⁇ 6 mol / L and excited at a wavelength of 460 nm. The fluorescence spectrum of was measured.
- a light emitting device equipped with each color conversion film and a blue LED element (manufactured by ProLight; model number PM2B-3LBE-SD, emission peak wavelength: 460 nm) is supplied with a current of 10 mA to light the LED, and a spectral radiance meter (CS- 1000, manufactured by Konica Minolta Co., Ltd.), emission spectrum, half width, emission intensity and chromaticity at peak wavelength were measured. Since the emission intensity is measured at a constant irradiation intensity, when the emission intensity is high, it means that the emission efficiency is high. That is, the light emission efficiency was evaluated by measuring the light emission intensity. Moreover, since the color purity becomes higher as the half-value width is narrower, the color purity was evaluated by measuring the half-value width. The distance between each color conversion film and the blue LED element was 3 cm.
- Synthesis example 1 Synthesis method of compound G-201 3,5-dibromobenzaldehyde (3.0 g), 4-t-butylphenylboronic acid (5.3 g), tetrakis (triphenylphosphine) palladium (0) (0.4 g), carbonic acid Potassium (2.0 g) was placed in the flask and purged with nitrogen. Degassed toluene (30 mL) and degassed water (10 mL) were added thereto, and the mixture was refluxed for 4 hours. The reaction solution was cooled to room temperature, and the organic layer was separated and washed with saturated brine. The organic layer was dried over magnesium sulfate and filtered, and then the solvent was distilled off. The obtained reaction product was purified by silica gel chromatography to obtain 3,5-bis (4-tert-butylphenyl) benzaldehyde (3.5 g) as a white solid.
- the absorption spectrum of this compound was as shown in FIG. 5, and showed a light absorption characteristic for a blue excitation light source (460 nm).
- the fluorescence spectrum was as shown in FIG. 6 and showed a sharp emission peak in the green region.
- the fluorescence quantum yield was 83%, and the compound was capable of efficient color conversion.
- Synthesis example 2 Synthesis Method of Compound G-32
- Compound G-32 was prepared in the same manner as in Synthesis Example 1, except that ethyl 2,4-dimethylpyrrole-3-carboxylate was used as the pyrrole raw material instead of 2,4-dimethylpyrrole. Synthesized.
- Synthesis example 3 Synthesis method of compound G-104 Compound G-104 was prepared in the same manner as in Synthesis Example 2, except that 4- (methoxycarbonyl) phenylboronic acid was used in place of 4-t-butylphenylboronic acid as the boronic acid raw material. Synthesized.
- ⁇ Embodiment 1A> ⁇ Light durability test> A light emitting device equipped with each color conversion film and a blue LED element (manufactured by ProLight; model number PM2B-3LBE-SD, emission peak wavelength: 460 nm) is supplied with a current of 10 mA to light the LED chip, and a spectral radiance meter (CS -1000, manufactured by Konica Minolta) was used to measure the initial luminance. The distance between each color conversion film and the blue LED element was 3 cm. Thereafter, the light durability was evaluated by continuously irradiating light from the blue LED element at room temperature and observing the time until the luminance decreased by a certain amount.
- CS -1000 spectral radiance meter
- Example 1 To 100 parts by weight of silicone resin “OE-6630A / B” (manufactured by Dow Corning Toray), 0.20 part by weight of compound G-1 and 0.5 part by weight of a curing agent were mixed as a luminescent material. Using a planetary stirring and defoaming apparatus “Mazerustar KK-400” (manufactured by Kurabo Industries), stirring and defoaming were carried out at 1000 rpm for 20 minutes to obtain a color conversion composition as a resin liquid for film production.
- a resin solution for film preparation was applied on “Therapy” BLK (manufactured by Toray Film Processing Co., Ltd.), heated at 130 ° C. for 2 hours, and dried to obtain a color conversion film having a thickness of 200 ⁇ m.
- Examples 2 to 45 and Comparative Examples 1 to 3 A color conversion film was prepared and evaluated in the same manner as in Example 1 except that the compounds described in Table 2 were used as the luminescent material. The results are shown in Table 2. However, the emission intensity (relative value) in the table is a relative value when the intensity in Comparative Example 1 is 1.00.
- Example 46 As a luminescent material, 0.20 part by weight of compound G-1, 0.08 part by weight of compound R-1 and 0.5 part by weight of a curing agent with respect to 100 parts by weight of a two-part thermosetting epoxy acrylic resin After mixing, the mixture was stirred at 300 rpm for 1 hour to produce a composition.
- the above composition was applied on a stretched polyethylene terephthalic acid film (XG5P1 manufactured by Toray Advanced Materials Co., Ltd.) using a bar coating method, and then dried at 120 ° C. for 5 minutes to form a coating layer having an average film thickness of 10 ⁇ m. Formed. Thereafter, a diffusion film (“Texcell” (registered trademark) TDF127, manufactured by Toray Advanced Materials Co., Ltd.) was laminated and then aged at 60 ° C. for 1 hour to obtain a color conversion film.
- Texcell registered trademark
- TDF127 manufactured by Toray Advanced Materials Co., Ltd.
- Examples 47-57 and Comparative Examples 4-5 A color conversion film was prepared and evaluated in the same manner as in Example 46 except that the compounds listed in Table 3 were used as the luminescent material. The results are shown in Table 3. However, the emission intensity (relative value) in the table is a relative value when the intensity in Comparative Example 4 is 1.00.
- Example 58 After mixing 100 parts by weight of silicone resin “OE-6630A / B” (manufactured by Dow Corning Toray) with 0.30 part by weight of compound G-101 as a luminescent material and 0.5 parts by weight of a curing agent, Using a planetary stirring and defoaming apparatus “Mazerustar KK-400” (manufactured by Kurabo Industries), stirring and defoaming were carried out at 1000 rpm for 20 minutes to obtain a color conversion composition as a resin liquid for film production.
- silicone resin “OE-6630A / B” manufactured by Dow Corning Toray
- a resin solution for film preparation was applied on “Therapy” BLK (manufactured by Toray Film Processing Co., Ltd.), heated at 130 ° C. for 2 hours, and dried to obtain a color conversion film having a thickness of 200 ⁇ m.
- Examples 59-79 and Comparative Examples 6-9 A color conversion film was prepared and evaluated in the same manner as in Example 58 except that the compounds described in Table 4 were used as the luminescent material. The results are shown in Table 4. However, the emission intensity (relative value) in the table is a relative value when the intensity in Comparative Example 6 is 1.00.
- Luminance retention rate (%) (luminance after 20 hours of blue LED irradiation / initial luminance) ⁇ 100 (The first decimal place is rounded off).
- Example 80 Using a polyethylene container having a volume of 300 ml, 99.78% by weight of “OE-6630A / B” (manufactured by Toray Dow Corning) was mixed as a silicone resin in a ratio of 0.22% by weight. .
- a resin solution for film preparation was applied on “Therapy” BLK (manufactured by Toray Film Processing Co., Ltd.), heated at 130 ° C. for 2 hours, and dried to obtain a color conversion film having a thickness of 200 ⁇ m.
- Comparative Example 10 A color conversion film was produced in the same manner as in Example 80 except that G-301 was used as the compound. When blue LED light was color-converted using these color conversion films, only the green light emission region was extracted. I. E. A chromaticity coordinate of (0.22, 0.72) was obtained, and high-purity green light emission with a half-value width of 25 nm of the emission spectrum was obtained. However, the fluorescence quantum yield of compound G-301 was 41%. The emission intensity was weaker than that of the example. In addition, the luminance retention rate of this color conversion film was 43%, resulting in poor light durability.
- Comparative Example 11 A color conversion film was produced in the same manner as in Example 80 except that G-302 was used as the compound. When blue LED light was color-converted using these color conversion films, only the green light emission region was extracted. I. E. A chromaticity coordinate of (0.24, 0.68) was obtained, and high-purity green light emission with a half-value width of 25 nm of the emission spectrum was obtained, but the fluorescence quantum yield of Compound G-302 was 42%. The emission intensity was weaker than that of the example. In addition, the luminance retention of this color conversion film was 42%, which resulted in poor light durability.
- Examples 81-93 A color conversion film was produced in the same manner as in Example 80 except that the compounds described in Table 5 were used as the luminescent material.
- the C.I. I. Table 5 shows the E chromaticity coordinates, the half-value width of the emission spectrum, the fluorescence quantum yield, and the emission intensity at the maximum emission wavelength (relative value when the intensity when the compound G-301 is used is 1.00).
- Comparative Example 12 A color conversion film was produced in the same manner as in Example 80 except that G-303 was used as the compound. When blue LED light was color-converted using these color conversion films, only the green light emission region was extracted. I. E. In chromaticity coordinates (0.27, 0.61), the half-value width of the emission spectrum was 55 nm. The emission intensity at the maximum emission wavelength was 2.81 relative to the intensity when the compound G-301 was used as 1.00. Although the light durability was good at 90%, the emission spectrum was widened, so the color purity was lowered.
- Comparative Example 13 A color conversion film was produced in the same manner as in Example 80 except that quantum dots (CdSe: dot diameter: 3 nm, manufactured by Sigma-Aldrich) were used as the compound. If only the green light emission area is extracted, C.I. I. E. The chromaticity coordinates (0.22, 0.70) were obtained, and the half-value width of the emission spectrum was 35 nm. However, the luminance retention of this color conversion film was 45%, resulting in poor light durability. It was.
- quantum dots CdSe: dot diameter: 3 nm, manufactured by Sigma-Aldrich
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Abstract
Description
R1~R7はそれぞれ同じでも異なっていてもよく、水素、置換もしくは無置換のアルキル基、置換もしくは無置換のシクロアルキル基、置換もしくは無置換の複素環基、置換もしくは無置換のアルケニル基、置換もしくは無置換のシクロアルケニル基、置換もしくは無置換のアルキニル基、水酸基、チオール基、置換もしくは無置換のアルコキシ基、置換もしくは無置換のアルキルチオ基、置換もしくは無置換のアリールエーテル基、置換もしくは無置換のアリールチオエーテル基、置換もしくは無置換のアリール基、置換もしくは無置換のヘテロアリール基、ハロゲン、シアノ基、アルデヒド基、置換もしくは無置換のカルボニル基、カルボキシル基、置換もしくは無置換のオキシカルボニル基、置換もしくは無置換のカルバモイル基、置換もしくは無置換のエステル基、置換もしくは無置換のスルホニル基、置換もしくは無置換のアミド基、置換もしくは無置換のアミノ基、ニトロ基、置換もしくは無置換のシリル基、置換もしくは無置換のシロキサニル基、置換もしくは無置換のボリル基、置換もしくは無置換のホスフィンオキシド基の中から選ばれる。
R8およびR9はそれぞれ同じでも異なっていてもよく、置換もしくは無置換のアルキル基、置換もしくは無置換のシクロアルキル基、置換もしくは無置換の複素環基、置換もしくは無置換のアルケニル基、置換もしくは無置換のシクロアルケニル基、置換もしくは無置換のアルキニル基、水酸基、チオール基、置換もしくは無置換のアルコキシ基、置換もしくは無置換のアルキルチオ基、置換もしくは無置換のアリールエーテル基、置換もしくは無置換のアリールチオエーテル基、置換もしくは無置換のアリール基、置換もしくは無置換のヘテロアリール基、ハロゲンの中から選ばれる。
但し、以下の(A)および(B)の少なくとも一方を満たす。
(A)R1~R7のうち少なくともひとつが電子吸引基である。
(B)R1、R3、R4およびR6がそれぞれ同じでも異なっていてもよく、水素、ハロゲン、置換もしくは無置換のアルキル基、置換もしくは無置換のシクロアルキル基、置換もしくは無置換のアルコキシ基、置換もしくは無置換のアリールエーテル基、置換もしくは無置換の複素環基、置換もしくは無置換のアルキルチオ基、置換もしくは無置換のアリールチオエーテル基、置換もしくは無置換のアミノ基、置換もしくは無置換のシリル基またはシアノ基であり、XがC-R7であり、R7が置換もしくは無置換のアリール基または置換もしくは無置換のヘテロアリール基のいずれかである。)
また、本発明は、下記一般式(3)で表されるピロメテンホウ素錯体である。
R8およびR9は、置換もしくは無置換のアルキル基、置換もしくは無置換のシクロアルキル基、置換もしくは無置換の複素環基、置換もしくは無置換のアルケニル基、置換もしくは無置換のシクロアルケニル基、置換もしくは無置換のアルキニル基、水酸基、チオール基、置換もしくは無置換のアルコキシ基、置換もしくは無置換のアルキルチオ基、置換もしくは無置換のアリールエーテル基、置換もしくは無置換のアリールチオエーテル基、置換もしくは無置換のアリール基、置換もしくは無置換のヘテロアリール基、ハロゲンの中から選ばれる。
L1およびL2は、単結合、置換もしくは無置換のアリーレン基、または置換もしくは無置換のヘテロアリーレン基である。
xおよびyは1~5の整数である。
但し、R17は電子吸引基であり、且つ、R1~R6のうち少なくともひとつは電子吸引基である。)
一般式(1)で表されるピロメテンホウ素錯体について詳細に説明する。
R1~R7はそれぞれ同じでも異なっていてもよく、水素、置換もしくは無置換のアルキル基、置換もしくは無置換のシクロアルキル基、置換もしくは無置換の複素環基、置換もしくは無置換のアルケニル基、置換もしくは無置換のシクロアルケニル基、置換もしくは無置換のアルキニル基、水酸基、チオール基、置換もしくは無置換のアルコキシ基、置換もしくは無置換のアルキルチオ基、置換もしくは無置換のアリールエーテル基、置換もしくは無置換のアリールチオエーテル基、置換もしくは無置換のアリール基、置換もしくは無置換のヘテロアリール基、ハロゲン、シアノ基、アルデヒド基、置換もしくは無置換のカルボニル基、カルボキシル基、置換もしくは無置換のオキシカルボニル基、置換もしくは無置換のカルバモイル基、置換もしくは無置換のエステル基、置換もしくは無置換のスルホニル基、置換もしくは無置換のアミド基、置換もしくは無置換のアミノ基、ニトロ基、置換もしくは無置換のシリル基、置換もしくは無置換のシロキサニル基、置換もしくは無置換のボリル基、置換もしくは無置換のホスフィンオキシド基の中から選ばれる。
R8およびR9はそれぞれ同じでも異なっていてもよく、置換もしくは無置換のアルキル基、置換もしくは無置換のシクロアルキル基、置換もしくは無置換の複素環基、置換もしくは無置換のアルケニル基、置換もしくは無置換のシクロアルケニル基、置換もしくは無置換のアルキニル基、水酸基、チオール基、置換もしくは無置換のアルコキシ基、置換もしくは無置換のアルキルチオ基、置換もしくは無置換のアリールエーテル基、置換もしくは無置換のアリールチオエーテル基、置換もしくは無置換のアリール基、置換もしくは無置換のヘテロアリール基、ハロゲンの中から選ばれる。
但し、以下の(A)および(B)の少なくとも一方を満たす。
(A)R1~R7のうち少なくともひとつが電子吸引基である。
(B)R1、R3、R4およびR6がそれぞれ同じでも異なっていてもよく、水素、ハロゲン、置換もしくは無置換のアルキル基、置換もしくは無置換のシクロアルキル基、置換もしくは無置換のアルコキシ基、置換もしくは無置換のアリールエーテル基、置換もしくは無置換の複素環基、置換もしくは無置換のアルキルチオ基、置換もしくは無置換のアリールチオエーテル基、置換もしくは無置換のアミノ基、置換もしくは無置換のシリル基またはシアノ基であり、XがC-R7であり、R7が置換もしくは無置換のアリール基または置換もしくは無置換のヘテロアリール基のいずれかである。
実施形態1Aでは、一般式(1)で表される化合物は、ピロメテンホウ素錯体骨格に必ず電子吸引基を有する。本実施形態の色変換組成物は、含有されるピロメテンホウ素錯体が励起光により励起され、励起光とは異なる波長の光を発光することで光の色変換を行う。ピロメテンホウ素錯体骨格に電子吸引基を導入することで、ピロメテンホウ素錯体骨格の電子密度を下げることができる。これにより、一般式(1)で表される化合物の酸素に対する安定性が向上し、耐久性を向上させることができる。
R8およびR9は、置換もしくは無置換のアルキル基、置換もしくは無置換のシクロアルキル基、置換もしくは無置換の複素環基、置換もしくは無置換のアルケニル基、置換もしくは無置換のシクロアルケニル基、置換もしくは無置換のアルキニル基、水酸基、チオール基、置換もしくは無置換のアルコキシ基、置換もしくは無置換のアルキルチオ基、置換もしくは無置換のアリールエーテル基、置換もしくは無置換のアリールチオエーテル基、置換もしくは無置換のアリール基、置換もしくは無置換のヘテロアリール基、ハロゲンの中から選ばれる。L1およびL2は、単結合、置換もしくは無置換のアリーレン基、または置換もしくは無置換のヘテロアリーレン基である。xおよびyは1~5の整数である。但し、R17は電子吸引基であり、且つ、R1~R6のうち少なくともひとつは電子吸引基である。
実施形態1A-1においては、電子吸引基がピロメテンホウ素錯体骨格に直接置換するため、ピロメテンホウ素錯体骨格の電子密度を大幅に下げることができる。これにより、酸素に対する安定性が向上し、耐久性を大幅に向上させることができる。
実施形態1A-2においては、さらにR1~R6のうち少なくともひとつは電子吸引基であることが好ましい。これにより、ピロメテンホウ素錯体骨格の電子密度を下げることができる。そして、酸素に対する安定性がより向上し、耐久性をより向上させることができる。
実施形態1A-3においては、R1~R6だけではなく、R17に電子吸引基を導入することで、ピロメテンホウ素錯体の電子密度をさらに下げることができる。これにより、酸素に対する安定性が大幅に向上し、耐久性をさらに向上させることができる。
実施形態1Bでは、一般式(1)で表される化合物の耐久性低下には、置換基R7が大きく影響する。すなわちR7が水素である場合、この水素の反応性が高く、容易に空気中の水分や酸素と反応してしまい分解を引き起こす。また、R7が例えばアルキル基のような分子鎖の運動の自由度が大きい置換基である場合は、確かに反応性は低下するが、組成物中で化合物同士が経時的に凝集し、結果的に濃度消光による発光強度の低下を招く。したがって、R7は剛直で、かつ運動の自由度が小さく凝集を引き起こしにくい、置換もしくは無置換のアリール基、または置換もしくは無置換のヘテロアリール基のいずれかである。
本発明の色変換組成物は、一般式(1)または(3)で表される化合物およびバインダー樹脂を含むことが好ましい。
バインダー樹脂は、連続相を形成するものであり、成型加工性、透明性、耐熱性等に優れる材料であれば良い。バインダー樹脂の例としては、アクリル酸系、メタクリル酸系、ポリケイ皮酸ビニル系、環ゴム系等の反応性ビニル基を有する光硬化型レジスト材料、エポキシ樹脂、シリコーン樹脂(シリコーンゴム、シリコーンゲル等のオルガノポリシロキサン硬化物(架橋物)を含む)、ウレア樹脂、フッ素樹脂、ポリカーボネート樹脂、アクリル樹脂、ウレタン樹脂、メラミン樹脂、ポリビニル樹脂、ポリアミド樹脂、フェノール樹脂、ポリビニルアルコール樹脂、セルロース樹脂、脂肪族エステル樹脂、芳香族エステル樹脂、脂肪族ポリオレフィン樹脂、芳香族ポリオレフィン樹脂などの公知のものが挙げられる。またこれらの共重合樹脂を用いても構わない。これらの樹脂を適宜設計することで、本発明の色変換組成物に有用な樹脂が得られる。これらの樹脂の中でも、フィルム化のプロセスが容易であることから熱可塑性樹脂がさらに好ましい。透明性、耐熱性などの観点から、エポキシ樹脂、シリコーン樹脂、アクリル樹脂またはこれらの混合物を好適に用いることができる。
本発明の色変換組成物は、一般式(1)または(3)で表される化合物およびバインダー樹脂以外に、光安定化剤、酸化防止剤、加工および熱安定化剤、紫外線吸収剤等の耐光性安定化剤、シリコーン微粒子およびシランカップリング剤を含有してもよい。
本発明の色変換組成物は溶剤を含んでいてもよい。溶剤は、流動状態の樹脂の粘度を調整でき、発光物質の発光および耐久性に過度な影響を与えないものであれば、特に限定されない。例えば、トルエン、メチルエチルケトン、メチルイソブチルケトン、ヘキサン、アセトン、テルピネオール、テキサノール、メチルセルソルブ、ブチルカルビトール、ブチルカルビトールアセテート、プロピレングリコールモノメチルエーテルアセテート等が挙げられ、これらの溶剤を2種類以上混合して使用することも可能である。これらの溶剤の中で特にトルエンは、一般式(1)または(3)で表される化合物の劣化に影響を与えず、乾燥後の残存溶媒が少ない点で好適に用いられる。
以下に、本発明の色変換組成物の製造方法の一例を説明する。前述した一般式(1)または(3)で表される化合物、バインダー樹脂、溶剤等を所定量混合する。上記の成分を所定の組成になるよう混合した後、ホモジナイザー、自公転型攪拌機、3本ローラー、ボールミル、遊星式ボールミル、ビーズミル等の撹拌・混練機で均質に混合分散することで、色変換組成物が得られる。混合分散後、もしくは混合分散の過程で、真空もしくは減圧条件下で脱泡することも好ましく行われる。また、ある特定の成分を事前に混合することや、エージング等の処理をしても構わない。エバポレーターによって溶剤を除去して所望の固形分濃度にすることも可能である。
本発明において色変換フィルムは色変換組成物の硬化物を含んでいればその構成に限定はない。色変換組成物の硬化物は、色変換組成物を硬化することにより得られる層として色変換フィルムに含まれることが好ましい。
基材層としては、特に制限無く公知の金属、フィルム、ガラス、セラミック、紙等を使用することができる。具体的には、アルミニウム(アルミニウム合金も含む)、亜鉛、銅、鉄などの金属板や箔、セルロースアセテート、ポリエチレンテレフタレート(PET)、ポリエチレン、ポリエステル、ポリアミド、ポリイミド、ポリフェニレンスルフィド、ポリスチレン、ポリプロピレン、ポリカーボネート、ポリビニルアセタール、アラミド、シリコーン、ポリオレフィン、熱可塑性フッ素樹脂で、テトラフルオロエチレンとエチレンの共重合体(ETFE)などのプラスチックのフィルム、α-ポリオレフィン樹脂、ポリカプロラクトン樹脂、アクリル樹脂、シリコーン樹脂およびこれらとエチレンの共重合樹脂からなるプラスチックのフィルム、前記プラスチックがラミネートされた紙、または前記プラスチックによりコーティングされた紙、前記金属がラミネートまたは蒸着された紙、前記金属がラミネートまたは蒸着されたプラスチックフィルムなどが挙げられる。また、基材が金属板の場合、表面にクロム系やニッケル系などのメッキ処理やセラミック処理されていてもよい。
次に、本発明の色変換フィルムの色変換層の製造方法の一例を説明する。上述した方法で作製した色変換組成物を基材上に塗布し、乾燥させる。塗布は、リバースロールコーター、ブレードコーター、スリットダイコーター、ダイレクトグラビアコーター、オフセットグラビアコーター、キスコーター、ナチュラルロールコーター、エアーナイフコーター、ロールブレードコーター、バリバーロールブレードコーター、トゥーストリームコーター、ロッドコーター、ワイヤーバーコーター、アプリケーター、ディップコーター、カーテンコーター、スピンコーター、ナイフコーター等により行うことができる。色変換層の膜厚均一性を得るためにはスリットダイコーターで塗布することが好ましい。
バリアフィルムとしては、色変換層に対してガスバリア性を向上する場合などにおいて適宜用いられ、例えば、酸化ケイ素、酸化アルミニウム、酸化チタン、酸化タンタル、酸化亜鉛、酸化スズ、酸化インジウム、酸化イットリウム、酸化マグネシウムなどの無機酸化物や、窒化ケイ素、窒化アルミニウム、窒化チタン、炭化窒化ケイ素などの無機窒化物、またはこれらの混合物、またはこれらに他の元素を添加した金属酸化物薄膜や金属窒化物薄膜、あるいはポリ塩化ビニリデン、アクリル系樹脂、シリコン系樹脂、メラミン系樹脂、ウレタン系樹脂、フッ素系樹脂、酢酸ビニルのけん化物等のポリビニルアルコール系樹脂などの各種樹脂から成る膜を挙げることができる。また、水分に対してバリア機能を有する膜としては、例えば、ポリエチレン、ポリプロピレン、ナイロン、ポリ塩化ビニリデン、塩化ビニリデンと塩化ビニル、塩化ビニリデンとアクリロニトリルの共重合物、フッ素系樹脂、酢酸ビニルのけん化物等のポリビニルアルコール系樹脂などの各種樹脂から成る膜を挙げることができる。
励起光の種類は、一般式(1)または(3)で表される化合物等の混合する発光物質が吸収可能な波長領域に発光を示すものであればいずれの励起光でも用いることができる。例えば、熱陰極管や冷陰極管、無機ELなどの蛍光性光源、有機エレクトロルミネッセンス素子光源、LED、白熱光源、あるいは太陽光などいずれの励起光でも原理的には利用可能である。
本発明における光源ユニットは、少なくとも光源および上述の色変換フィルムを含む構成である。光源と色変換フィルムの配置方法については特に限定されず、光源と色変換フィルムを密着させた構成を取っても良いし、光源と色変換フィルムを離したリモートフォスファー形式を取っても良い。また、色純度を高める目的で、さらにカラーフィルターを含む構成を取っても良い。前述の通り、430~500nmの範囲の励起光は比較的小さい励起エネルギーであり、一般式(1)または(3)で表される化合物等の発光物質の分解を防止できるので、光源は430~500nmの範囲に極大発光を有する発光ダイオードであることが好ましい。さらに光源は450~470nmが好ましい。
化合物の1H-NMRは、超伝導FTNMR EX-270(日本電子(株)製)を用い、重クロロホルム溶液にて測定を行った。
化合物の吸収スペクトルは、U-3200形分光光度計(日立製作所(株)製)を用い、化合物をトルエンに1×10-6mol/Lの濃度で溶解させて測定を行った。
化合物の蛍光スペクトルは、F-2500形分光蛍光光度計(日立製作所(株)製)を用い、化合物をトルエンに1×10-6mol/Lの濃度で溶解させ、波長460nmで励起させた際の蛍光スペクトルを測定した。
各色変換フィルムおよび青色LED素子(ProLight社製;型番PM2B-3LBE-SD、発光ピーク波長:460nm)を搭載した発光装置に、10mAの電流を流してLEDを点灯させ、分光放射輝度計(CS-1000、コニカミノルタ社製)を用いて、発光スペクトル、半値幅、ピーク波長における発光強度および色度を測定した。尚、発光強度については一定の照射強度で測定しているため、発光強度が高い場合、発光効率が高いことを意味する。すなわち、発光強度を測定することで発光効率を評価した。また、半値幅が狭いほど高色純度になるため、半値幅を測定することで色純度を評価した。各色変換フィルムと青色LED素子との距離を3cmとした。
化合物G-201の合成方法
3,5-ジブロモベンズアルデヒド(3.0g)、4-t-ブチルフェニルボロン酸(5.3g)、テトラキス(トリフェニルホスフィン)パラジウム(0)(0.4g)、炭酸カリウム(2.0g)をフラスコに入れ、窒素置換した。ここに脱気したトルエン(30mL)および脱気した水(10mL)を加え、4時間還流した。反応溶液を室温まで冷却し、有機層を、分液した後に飽和食塩水で洗浄した。この有機層を硫酸マグネシウムで乾燥し、ろ過後、溶媒を留去した。得られた反応生成物をシリカゲルクロマトグラフィーにより精製し、3,5-ビス(4-t-ブチルフェニル)ベンズアルデヒド(3.5g)を白色固体として得た。
化合物G-32の合成方法
ピロール原料として、2,4-ジメチルピロールの代わりに2,4-ジメチルピロール-3-カルボン酸エチルを用いた以外は、合成例1と同様にして化合物G-32を合成した。
化合物G-104の合成方法
ボロン酸原料として、4-t-ブチルフェニルボロン酸の代わりに4-(メトキシカルボニル)フェニルボロン酸を用いた以外は、合成例2と同様にして化合物G-104を合成した。
<光耐久性のテスト>
各色変換フィルムおよび青色LED素子(ProLight社製;型番PM2B-3LBE-SD、発光ピーク波長:460nm)を搭載した発光装置に、10mAの電流を流してLEDチップを点灯させ、分光放射輝度計(CS-1000、コニカミノルタ社製)を用いて初期輝度を測定した。なお、各色変換フィルムと青色LED素子との距離を3cmとした。その後、室温下で青色LED素子からの光を連続照射し、輝度が一定量低下するまでの時間を観測することで、光耐久性を評価した。
シリコーン樹脂 “OE-6630A/B” (東レ・ダウコーニング社製)100重量部に対して、発光材料として化合物G-1を0.20重量部、硬化剤を0.5重量部混合した後、遊星式撹拌・脱泡装置“マゼルスターKK-400”(クラボウ製)を用い、1000rpmで20分間撹拌・脱泡してフィルム作製用樹脂液としての色変換組成物を得た。
発光材料として表2に記載した化合物を用いた以外は、実施例1と同様にして色変換フィルムを作製して評価した。結果を表2に示す。ただし、表中の発光強度(相対値)は、比較例1における強度を1.00としたときの相対値である。
二液型熱硬化性エポキシ系アクリル樹脂100重量部に対して、発光材料として化合物G-1を0.20重量部、化合物R-1を0.08重量部、硬化剤を0.5重量部混合した後、300rpmで1時間攪拌し、組成物を製造した。
発光材料として表3に記載した化合物を用いた以外は、実施例46と同様にして色変換フィルムを作製して評価した。結果を表3に示す。ただし、表中の発光強度(相対値)は、比較例4における強度を1.00としたときの相対値である。
シリコーン樹脂 “OE-6630A/B” (東レ・ダウコーニング社製)100重量部に対して、発光材料として化合物G-101を0.30重量部、硬化剤を0.5重量部混合した後、遊星式撹拌・脱泡装置“マゼルスターKK-400”(クラボウ製)を用い、1000rpmで20分間撹拌・脱泡してフィルム作製用樹脂液としての色変換組成物を得た。
発光材料として表4に記載した化合物を用いた以外は、実施例58と同様にして色変換フィルムを作製して評価した。結果を表4に示す。ただし、表中の発光強度(相対値)は、比較例6における強度を1.00としたときの相対値である。
<光耐久性のテスト>
各色変換フィルムおよび青色LED素子(ProLight社製;型番PM2B-3LBE-SD、発光ピーク波長:460nm)を搭載した発光装置に、10mAの電流を流してLEDチップを点灯させ、分光放射輝度計(CS-1000、コニカミノルタ社製)を用いて初期輝度を測定した。なお、各色変換フィルムと青色LED素子との距離を3cmとした。その後、室温下で青色LED素子からの光を20時間照射した後の輝度を測定した。下記式により輝度保持率を算出することで光耐久性を評価した。
(小数第1位を四捨五入)。
容積300mlのポリエチレン製容器を用いて、シリコーン樹脂として“OE-6630A/B” (東レ・ダウコーニング社製)を99.78重量%、化合物G-201を0.22重量%の比率で混合した。
化合物としてG-301を用いた以外は、実施例80と同様にして色変換フィルムを作製した。これらの色変換フィルムを用いて青色LED光を色変換させたところ、緑色光の発光領域のみを抜粋するとC.I.E.色度座標で(0.22、0.72)が得られ、発光スペクトルの半値幅25nmの高色純度緑色発光が得られたが、化合物G-301の蛍光量子収率が41%であったため、実施例と比較して弱い発光強度となった。また、この色変換フィルムの輝度保持率は43%であり、光耐久性が悪い結果となった。
化合物としてG-302を用いた以外は、実施例80と同様にして色変換フィルムを作製した。これらの色変換フィルムを用いて青色LED光を色変換させたところ、緑色光の発光領域のみを抜粋するとC.I.E.色度座標で(0.24、0.68)が得られ、発光スペクトルの半値幅25nmの高色純度緑色発光が得られたが、化合物G-302の蛍光量子収率が42%であったため、実施例と比較して弱い発光強度となった。また、この色変換フィルムの輝度保持率は42%であり、光耐久性が悪い結果となった。
発光材料として表5に記載した化合物を用いた以外は、実施例80と同様にして色変換フィルムを作製した。これらの色変換フィルムを用いて青色LED光を色変換させた時の、緑色発光領域のC.I.E色度座標および発光スペクトルの半値幅、蛍光量子収率、最大発光波長における発光強度(化合物G-301を用いた場合における強度を1.00としたときの相対値)を表5に示す。
化合物としてG-303を用いた以外は、実施例80と同様にして色変換フィルムを作製した。これらの色変換フィルムを用いて青色LED光を色変換させたところ、緑色光の発光領域のみを抜粋するとC.I.E.色度座標で(0.27、0.61)、発光スペクトルの半値幅55nmとなった。最大発光波長における発光強度は、化合物G-301を用いた場合における強度を1.00としたときの相対値で2.81であった。光耐久性は90%で良好であったものの、発光スペクトルが広くなったため色純度が低下した。
化合物として量子ドット(CdSe:ドット径3nm、シグマアルドリッチ製)を用いた以外は、実施例80と同様にして色変換フィルムを作製した。緑色光の発光領域のみを抜粋するとC.I.E.色度座標で(0.22、0.70)が得られ、発光スペクトルの半値幅35nmとなったが、この色変換フィルムの輝度保持率は45%であり、光耐久性が悪い結果となった。
10 基材層
11 色変換層
12 バリアフィルム
Claims (37)
- 入射光を、その入射光よりも長波長の光に変換する色変換組成物であって、一般式(1)で表される化合物およびバインダー樹脂を含むことを特徴とする色変換組成物。
R1~R7はそれぞれ同じでも異なっていてもよく、水素、置換もしくは無置換のアルキル基、置換もしくは無置換のシクロアルキル基、置換もしくは無置換の複素環基、置換もしくは無置換のアルケニル基、置換もしくは無置換のシクロアルケニル基、置換もしくは無置換のアルキニル基、水酸基、チオール基、置換もしくは無置換のアルコキシ基、置換もしくは無置換のアルキルチオ基、置換もしくは無置換のアリールエーテル基、置換もしくは無置換のアリールチオエーテル基、置換もしくは無置換のアリール基、置換もしくは無置換のヘテロアリール基、ハロゲン、シアノ基、アルデヒド基、置換もしくは無置換のカルボニル基、カルボキシル基、置換もしくは無置換のオキシカルボニル基、置換もしくは無置換のカルバモイル基、置換もしくは無置換のエステル基、置換もしくは無置換のスルホニル基、置換もしくは無置換のアミド基、置換もしくは無置換のアミノ基、ニトロ基、置換もしくは無置換のシリル基、置換もしくは無置換のシロキサニル基、置換もしくは無置換のボリル基、置換もしくは無置換のホスフィンオキシド基の中から選ばれる。
R8およびR9はそれぞれ同じでも異なっていてもよく、置換もしくは無置換のアルキル基、置換もしくは無置換のシクロアルキル基、置換もしくは無置換の複素環基、置換もしくは無置換のアルケニル基、置換もしくは無置換のシクロアルケニル基、置換もしくは無置換のアルキニル基、水酸基、チオール基、置換もしくは無置換のアルコキシ基、置換もしくは無置換のアルキルチオ基、置換もしくは無置換のアリールエーテル基、置換もしくは無置換のアリールチオエーテル基、置換もしくは無置換のアリール基、置換もしくは無置換のヘテロアリール基、ハロゲンの中から選ばれる。
但し、以下の(A)および(B)の少なくとも一方を満たす。
(A)R1~R7のうち少なくともひとつが電子吸引基である。
(B)R1、R3、R4、R6がそれぞれ同じでも異なっていてもよく、水素、ハロゲン、置換もしくは無置換のアルキル基、置換もしくは無置換のシクロアルキル基、置換もしくは無置換のアルコキシ基、置換もしくは無置換のアリールエーテル基、置換もしくは無置換の複素環基、置換もしくは無置換のアルキルチオ基、置換もしくは無置換のアリールチオエーテル基、置換もしくは無置換のアミノ基、置換もしくは無置換のシリル基またはシアノ基であり、XがC-R7であり、R7が置換もしくは無置換のアリール基または置換もしくは無置換のヘテロアリール基のいずれかである。) - 一般式(1)において(A)を満たし、かつ、R1~R6の少なくともひとつが電子吸引基である請求項1記載の色変換組成物。
- XがC-R7であり、R7が置換もしくは無置換のアリール基、または置換もしくは無置換のヘテロアリール基である、請求項2に記載の色変換組成物。
- XがC-R7であり、R7が下記一般式(2)で表される請求項2または3に記載の色変換組成物;
- 一般式(2)のrが置換もしくは無置換のアリール基または置換もしくは無置換のヘテロアリール基である請求項4記載の色変換組成物。
- 一般式(1)において(A)を満たし、かつ、XがC-R7であり、R7が電子吸引基である請求項1記載の色変換組成物。
- 一般式(1)において(A)を満たし、かつ、R2およびR5の少なくとも1つが電子吸引基である、請求項1~7のいずれか記載の色変換組成物。
- 一般式(1)において(A)を満たし、かつ、前記電子吸引基がフッ素、含フッ素アリール基、含フッ素ヘテロアリール基、含フッ素アルキル基、置換もしくは無置換のアシル基、置換もしくは無置換のエステル基、置換もしくは無置換のアミド基、置換もしくは無置換のスルホニル基、またはシアノ基である請求項1~8のいずれかに記載の色変換組成物。
- R1、R3、R4およびR6の少なくとも1つが置換もしくは無置換のフェニル基である、請求項1~9のいずれかに記載の色変換組成物。
- 一般式(1)において(B)を満たし、かつ、R7が下記一般式(2)で表される請求項1記載の色変換組成物;
- 一般式(2)のrが置換もしくは無置換のアリール基または置換もしくは無置換のヘテロアリール基である請求項11記載の色変換組成物。
- 一般式(2)のrが置換もしくは無置換のアルキル基、置換もしくは無置換のアルコキシ基、またはハロゲンである請求項12記載の色変換組成物。
- 一般式(2)のkが1もしくは2である請求項11~13いずれかに記載の色変換組成物。
- R1、R3、R4およびR6の少なくとも1つが置換もしくは無置換のアルキル基である、請求項1~14のいずれかに記載の色変換組成物。
- 下記一般式(3)で表されるピロメテンホウ素錯体。
R8およびR9は、置換もしくは無置換のアルキル基、置換もしくは無置換のシクロアルキル基、置換もしくは無置換の複素環基、置換もしくは無置換のアルケニル基、置換もしくは無置換のシクロアルケニル基、置換もしくは無置換のアルキニル基、水酸基、チオール基、置換もしくは無置換のアルコキシ基、置換もしくは無置換のアルキルチオ基、置換もしくは無置換のアリールエーテル基、置換もしくは無置換のアリールチオエーテル基、置換もしくは無置換のアリール基、置換もしくは無置換のヘテロアリール基、ハロゲンの中から選ばれる。
L1およびL2は、単結合、置換もしくは無置換のアリーレン基、または置換もしくは無置換のヘテロアリーレン基である。
xおよびyは1~5の整数である。
但し、R17は電子吸引基であり、且つ、R1~R6のうち少なくともひとつは電子吸引基である。) - 一般式(3)において、R2およびR5の少なくとも1つが電子吸引基である、請求項16に記載のピロメテンホウ素錯体。
- 一般式(3)において、R1、R3、R4およびR6の少なくとも1つが置換もしくは無置換のアルキル基である、請求項16または17に記載のピロメテンホウ素錯体。
- 一般式(3)において、R1、R3、R4およびR6の少なくとも1つが置換もしくは無置換のアリール基である、請求項16~18のいずれかに記載のピロメテンホウ素錯体。
- 前記電子吸引基がフッ素、含フッ素アリール基、含フッ素ヘテロアリール基、含フッ素アルキル基、置換もしくは無置換のアシル基、置換もしくは無置換のエステル基、置換もしくは無置換のアミド基、置換もしくは無置換のスルホニル基、またはシアノ基である請求項16~19のいずれか記載のピロメテンホウ素錯体。
- 励起光を用いることによりピーク波長が500nm以上580nm以下の領域に観測される発光を呈する、請求項16~20のいずれかに記載のピロメテンホウ素錯体。
- 励起光を用いることによりピーク波長が580nm以上750nm以下の領域に観測される発光を呈する、請求項16~20のいずれかに記載のピロメテンホウ素錯体。
- 一般式(1)で表される化合物が、励起光を用いることによりピーク波長が500nm以上580nm以下の領域に観測される発光を呈する、請求項1~15のいずれかに記載の色変換組成物。
- 一般式(1)で表される化合物が、励起光を用いることによりピーク波長が580nm以上750nm以下の領域に観測される発光を呈する、請求項1~15のいずれかに記載の色変換組成物。
- 前記色変換組成物が、下記の発光材料(a)および(b)を含有し、発光材料(a)もしくは(b)の少なくとも一つが一般式(1)で表される化合物である、請求項1~15のいずれかに記載の色変換組成物。
(a)励起光を用いることによりピーク波長が500nm以上580nm以下の領域に観測される発光を呈する発光材料
(b)励起光もしくは発光材料(a)からの発光の少なくとも一方により励起されることにより、ピーク波長が580nm以上750nm以下の領域に観測される発光を呈する発光材料 - 前記発光材料(a)および(b)がともに一般式(1)で表される化合物である、請求項25に記載の色変換組成物。
- 前記発光材料(a)の含有量waと、発光材料(b)の含有量wbが、wa≧wbの関係である、請求項25または26に記載の色変換組成物。
- さらに溶媒を含有する、請求項1~15のいずれかに記載の色変換組成物。
- 前記バインダー樹脂が熱可塑性樹脂であることを特徴とする、請求項1~15のいずれかに記載の色変換組成物。
- 請求項1~15のいずれかに記載の色変換組成物の硬化物からなる層を含む、色変換フィルム。
- さらにバリアフィルムを有する請求項30記載の色変換フィルム。
- 光源および請求項30または31記載の色変換フィルムを含む、光源ユニット。
- 光源が430nm以上500nm以下の範囲に極大発光を有する発光ダイオードである、請求項32記載の光源ユニット。
- 光源が450nm以上470nm以下の範囲に極大発光を有する発光ダイオードである、請求項33記載の光源ユニット。
- 請求項30または31記載の色変換フィルムを含むディスプレイ。
- 請求項30または31記載の色変換フィルムを含む照明。
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JP2016534754A JP6299870B2 (ja) | 2015-05-26 | 2016-05-23 | ピロメテンホウ素錯体、色変換組成物、色変換フィルムならびにそれを含む光源ユニット、ディスプレイおよび照明 |
CN201680029782.9A CN107614659B (zh) | 2015-05-26 | 2016-05-23 | 吡咯亚甲基硼络合物、颜色转换组合物、颜色转换膜以及包含其的光源单元、显示器及照明 |
US16/935,844 US11149196B2 (en) | 2015-05-26 | 2020-07-22 | Pyrromethene-boron complex, color-changing composition, color-changing film, light source unit including same, display, and lighting |
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US20180134952A1 (en) | 2018-05-17 |
CN107614659A (zh) | 2018-01-19 |
EP3305870A4 (en) | 2018-11-14 |
SG11201709751SA (en) | 2017-12-28 |
KR20180012267A (ko) | 2018-02-05 |
US10836959B2 (en) | 2020-11-17 |
JPWO2016190283A1 (ja) | 2017-07-06 |
EP3305870B1 (en) | 2020-11-18 |
US11149196B2 (en) | 2021-10-19 |
TW201708415A (zh) | 2017-03-01 |
MY183307A (en) | 2021-02-18 |
JP6299870B2 (ja) | 2018-03-28 |
KR102070833B1 (ko) | 2020-04-01 |
US20200347292A1 (en) | 2020-11-05 |
CN107614659B (zh) | 2021-01-08 |
EP3305870A1 (en) | 2018-04-11 |
TWI677539B (zh) | 2019-11-21 |
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