WO2016195188A1 - 양자점, 이를 포함하는 조성물 및 양자점의 제조방법 - Google Patents
양자점, 이를 포함하는 조성물 및 양자점의 제조방법 Download PDFInfo
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- WO2016195188A1 WO2016195188A1 PCT/KR2015/013266 KR2015013266W WO2016195188A1 WO 2016195188 A1 WO2016195188 A1 WO 2016195188A1 KR 2015013266 W KR2015013266 W KR 2015013266W WO 2016195188 A1 WO2016195188 A1 WO 2016195188A1
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/015—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 semiconductor elements having potential barriers, e.g. having a PN or PIN junction
- G02F1/017—Structures with periodic or quasi periodic potential variation, e.g. superlattices, quantum wells
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- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent materials, e.g. electroluminescent or chemiluminescent
- C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
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- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent materials, e.g. electroluminescent or chemiluminescent
- C09K11/08—Luminescent materials, e.g. electroluminescent or chemiluminescent containing inorganic luminescent materials
- C09K11/54—Luminescent materials, e.g. electroluminescent or chemiluminescent containing inorganic luminescent materials containing zinc or cadmium
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09K11/00—Luminescent materials, e.g. electroluminescent or chemiluminescent
- C09K11/08—Luminescent materials, e.g. electroluminescent or chemiluminescent containing inorganic luminescent materials
- C09K11/56—Luminescent materials, e.g. electroluminescent or chemiluminescent containing inorganic luminescent materials containing sulfur
- C09K11/562—Chalcogenides
- C09K11/565—Chalcogenides with zinc cadmium
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent materials, e.g. electroluminescent or chemiluminescent
- C09K11/08—Luminescent materials, e.g. electroluminescent or chemiluminescent containing inorganic luminescent materials
- C09K11/70—Luminescent materials, e.g. electroluminescent or chemiluminescent containing inorganic luminescent materials containing phosphorus
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- C09K11/00—Luminescent materials, e.g. electroluminescent or chemiluminescent
- C09K11/08—Luminescent materials, e.g. electroluminescent or chemiluminescent containing inorganic luminescent materials
- C09K11/88—Luminescent materials, e.g. electroluminescent or chemiluminescent containing inorganic luminescent materials containing selenium, tellurium or unspecified chalcogen elements
- C09K11/881—Chalcogenides
- C09K11/883—Chalcogenides with zinc or cadmium
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/133711—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/015—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 semiconductor elements having potential barriers, e.g. having a PN or PIN junction
- G02F1/017—Structures with periodic or quasi periodic potential variation, e.g. superlattices, quantum wells
- G02F1/01791—Quantum boxes or quantum dots
Definitions
- It relates to a quantum dot, a composition comprising the same and a method for producing the same.
- a quantum dot is a semiconductor material with a crystal structure of several nanoscales and is composed of hundreds to thousands of atoms.
- quantum dots are very small in size, they have a large surface area per unit volume, and exhibit quantum confinement effects. Therefore, it exhibits unique physicochemical properties that are different from those of the semiconductor material itself.
- the characteristics of the quantum dot as an optoelectronic through a method for adjusting the size of the quantum dot, and the development of application to a display device or a bioluminescent label device.
- a silicone resin is used as a matrix resin to disperse the quantum dot.
- silicone resins have poor compatibility with organic ligands present on the surface of the quantum dots, resulting in aggregation of the quantum dots, which may result in the loss of organic ligands present on the surface of the quantum dots. The efficiency of the device can be reduced.
- One embodiment is to passivate the surface of the quantum dot (passivation) efficiently provides excellent stability against oxygen and moisture, excellent thermal stability and light stability, and excellent quantum dot dispersibility to the solvent or matrix resin used in the film production do.
- Another embodiment provides a composition comprising the quantum dots.
- Yet another embodiment provides a method of manufacturing the quantum dot.
- the first monomer having three or more thiol groups (-SH) at the terminal and at least two functional groups (functional group) capable of reacting with the thiol group is located between the two or more functional groups
- a quantum dot passivated with an oligomer or polymer formed by reacting a second monomer comprising a spacer group is provided.
- the oligomer or polymer may be a multidentate ligand comprising a thiol group at the end.
- the oligomer or polymer may passivate the quantum dots by forming a three-dimensional network on the surface of the quantum dots.
- the quantum dot is InP quantum dot; Quantum dots comprising an InP core and a shell comprising ZnS, ZnSe or a combination thereof; And combinations thereof.
- the first monomer may be represented by the following Chemical Formula 1.
- X 1 and X 2 are each independently a carbon, a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted C6 to C30 heteroarylene group, a substituted or unsubstituted C3 to C30 cycloalkylene group and a substitution Or an unsubstituted C3 to C30 heterocycloalkylene group,
- R 1 to R 7 are each independently hydrogen, a thiol group, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C3 to C30 heteroaryl group, Selected from a substituted or unsubstituted C3 to C30 cycloalkyl group, a substituted or unsubstituted C3 to C30 heterocycloalkyl group, a substituted or unsubstituted C2 to C30 alkenyl group, and a substituted or unsubstituted C2 to C30 alkynyl group Clearly,
- n is an integer of 0, 1 or 2, and when n is 0, at least 3 of R 1 to R 4 are thiol groups, and when n is 1 or 2, at least 3 of R 1 to R 7 are thiol groups .
- the first monomer is di pentaerythritol hexakis (3-mercaptopropionate) (DHM), pentaerythritol tetrakis (3-mercaptopropionate) (pentaerythritol tetrakis) (3-mercaptopropionate)), trimethylolpropane tris (3-mercaptopropionate), pentaerythritol tetrakis (3-mercaptoacetate) (pentaerythritol tetrakis (3-mercaptoacetate) ), Trimethylolpropane tris (3-mercaptoacetate), tris [2- (3-mercaptopropionyloxy) ethyl] isocyanurate (tris [2- (3- mercaptopropionyloxy) ethyl] isocyanurate), tricyanuric acid, and combinations thereof.
- the second monomer may be represented by the following Chemical Formula 2.
- L is a spacer group
- R 12 is hydrogen, a thiol group, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C3 to C30 heteroaryl group, a substituted or unsubstituted C3 To C30 cycloalkyl group, substituted or unsubstituted C3 to C30 heterocycloalkyl group, substituted or unsubstituted C2 to C30 alkenyl group, and substituted or unsubstituted C2 to C30 alkynyl group,
- Y 1 is selected from a functional group having a carbon-carbon unsaturated bond, a thiol group, and a combination thereof,
- p is an integer of 0 or more
- q is an integer of 2 or more
- p + q does not exceed the bond number of L.
- the spacer group is substituted or unsubstituted alkylene group having 4 or more carbon atoms; A substituted or unsubstituted cycloalkylene group or heterocycloalkylene group, in which two or more monocyclic rings are linked or fused by one or more linkers; A substituted or unsubstituted arylene group or heteroarylene group in which two or more aromatic rings are connected or fused by one or more linkers; And combinations thereof.
- the second monomer may be cycloalkanediol di (meth) acrylate such as tricyclodecane dimethanol di (meth) acrylate; Hexanediol di (meth) acrylate, 1,8-octanediol di (meth) acrylate, 1,9-nonanediol di ( Alkanediol di (meth) acrylates, such as meth) acrylate (1,9-nonanediol di (meth) acrylate) and 1,10-decanediol di (meth) acrylate (1,10-decanediol di (meth) acrylate) Rate; 2,2 '-(ethylenedioxydiethane) dithiol; 9,9-bis [4- (2- (meth) acryloyloxy ethoxy) phenyl] fluorene (9,9-bis [4- (2-acryloyloxy ethoxy) phen
- the oligomer or polymer may be present in an amount of about 80 to about 100 parts by weight relative to 100 parts by weight of the passivated quantum dots.
- the first monomer having three or more thiol groups (-SH) at the terminal and two or more functional groups capable of reacting with the thiol group at the terminal and positioned between the two or more functional groups
- Quantum dots passivated with oligomers or polymers formed by reacting a second monomer comprising a spacer group;
- a composition comprising a monomer and a solvent of a matrix polymer is provided.
- the said 1st monomer, the 2nd monomer, and a quantum dot are as above-mentioned.
- the monomer of the matrix polymer may be a monomer that provides a polymer selected from acrylic resins, methacryl resins, silicone resins, thiol-ene resins, and combinations thereof.
- the solvent may be selected from toluene, benzene, chloroform, dichloromethane, tetrahydrofuran, trioctylamine, xylene, dimethylsulfoxide, dimethylformamide and combinations thereof.
- the passivated quantum dots may be included in about 0.1 to about 20% by weight of the total composition.
- the first monomer having three or more thiol groups (-SH) and two or more functional groups capable of reacting with the thiol group at the terminal and a spacer located between the two or more functional groups
- a solution including a multidentate oligomer formed by reacting a second monomer comprising a spacer group Preparing a solution including a multidentate oligomer formed by reacting a second monomer comprising a spacer group
- Yet another embodiment provides a film comprising the passivated quantum dots.
- Yet another embodiment provides a device comprising the film.
- the quantum dots passivated with the oligomer or polymer are stable to oxygen or moisture, have excellent thermal stability and light stability, and may be well dispersed in a solvent or a matrix resin used in manufacturing a film.
- 1 is a view schematically showing a passivated quantum dot according to an embodiment.
- FIG. 2 is a diagram showing a 1 H NMR measurement result of a matrix obtained after removing a solvent from an oligomer solution according to Example 1.
- FIG. 2 is a diagram showing a 1 H NMR measurement result of a matrix obtained after removing a solvent from an oligomer solution according to Example 1.
- 3 and 4 are transmission electron micrographs of the films obtained after applying the quantum dot solutions of Examples 1 and 2, respectively, to remove the solvent.
- 5 is a transmission electron micrograph of a film obtained from an unpassivated red quantum dot solution.
- FIG. 6 shows the results of measuring PL strength over time in air at a temperature of 120 of a sample prepared using passivated quantum dots and non-passivated quantum dots according to Examples 1 and 2.
- Example 7 and 8 show the results of measuring PL intensity over time in the UV exposure environment of the passivated quantum dots and the non-passivated quantum dots (Comparative Example 1) of Example 1, respectively.
- alkanes mean alkanes of C6 to C30 and alkylene means alkylene of C6 to C30.
- the first monomer having three or more thiol groups (-SH) at the terminal and at least two functional groups (functional group) capable of reacting with the thiol group is located between the two or more functional groups
- a quantum dot passivated with an oligomer or polymer formed by reacting a second monomer comprising a spacer group is provided.
- 1 is a view schematically showing a passivated quantum dot according to an embodiment.
- a passivated quantum dot 1 includes an oligomer or polymer surrounding the surface of a quantum dot (bare QD) 10.
- the oligomer or polymer includes a chelating domain 12 and a spacer group 14 attached to the surface of the quantum dot by substituting the ligand of the quantum dot.
- the thiol group present at the end of the oligomer or polymer may serve as an anchor group for binding to the surface of the quantum dot.
- the oligomer or polymer may be a multidentate ligand comprising a thiol group at the end.
- the thiol group may stabilize the quantum dot 10 by combining the surface of the quantum dot 10 and passivating the quantum dot 10 to form a three-dimensional network by combining the multidentate ligand with another multidentate ligand. .
- the oligomers or polymers may also be used to passivate two or more quantum dots. Since a certain distance is maintained between the quantum dots by the spacer group, the agglomeration of the quantum dots does not occur, and thus dispersibility may be improved.
- the quantum dot 10 may be a quantum dot emitting red, green, yellow, blue, or the like.
- the quantum dot may be a Group II-VI compound, a Group III-V compound, a Group IV-VI compound, a Group IV element, a Group IV compound, or a combination thereof.
- the group II-VI compound is selected from the group consisting of CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe, MgS and mixtures thereof; CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnSe, HgZnSe, HgZnSe Bovine compounds; And an isotopic compound selected from the group consisting of HgZnTeS, CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, C
- the group III-V compound is selected from the group consisting of GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, InSb and mixtures thereof; Three-element compounds selected from the group consisting of GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InNP, InNAs, InNSb, InPAs, InPSb, GaAlNP and mixtures thereof; And an elemental compound selected from the group consisting of GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, InAlPSb and mixtures thereof.
- Group IV-VI compound is a binary element selected from the group consisting of SnS, SnSe, SnTe, PbS, PbSe, PbTe and mixtures thereof; A three-element compound selected from the group consisting of SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe, SnPbTe, and mixtures thereof; And an isotopic compound selected from the group consisting of SnPbSSe, SnPbSeTe, SnPbSTe, and mixtures thereof.
- the group IV element may be selected from the group consisting of Si, Ge, and mixtures thereof.
- the Group IV compound may be selected from the group consisting of binary elements selected from the group consisting of SiC, SiGe, and mixtures thereof.
- the quantum dots 10 include InP quantum dots; Quantum dots including InP cores and ZnS, ZnSe shells, and combinations thereof.
- the oligomer or polymer is a first monomer having at least three thiol groups (-SH) at its ends and at least two functional groups capable of reacting with the thiol groups at the ends and a spacer located between the at least two functional groups It is prepared by reacting a second monomer containing a spacer group.
- the first monomer may be represented by the following Chemical Formula 1.
- X 1 and X 2 are each independently a carbon, a substituted or unsubstituted C6 to C30 arylene group (for example a substituted or unsubstituted phenylene group), a substituted or unsubstituted C6 to C30 heteroarylene group (for example Isocyanurate group (isocyanurate group, triazine group, etc.), substituted or unsubstituted C3 to C30 cycloalkylene group and substituted or unsubstituted C3 to C30 heterocycloalkylene group,
- R 1 to R 7 are each independently hydrogen, a thiol group, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C3 to C30 heteroaryl group, Selected from a substituted or unsubstituted C3 to C30 cycloalkyl group, a substituted or unsubstituted C3 to C30 heterocycloalkyl group, a substituted or unsubstituted C2 to C30 alkenyl group, and a substituted or unsubstituted C2 to C30 alkynyl group Clearly,
- n is an integer of 0, 1 or 2, and when n is 0, at least 3 of R 1 to R 4 are thiol groups, and when n is 1 or 2, at least 3 of R 1 to R 7 are thiol groups .
- the first monomer may include 3 to 10 thiol groups according to the structure thereof.
- Specific examples of the first monomer include dipentaerythritol hexakis (3-mercaptopropionate) of Formula 1a (3-mercaptopropionate, DHM), pentaerythritol tetrakis of formula 1b -Mercaptopropionate) (pentaerythritol tetrakis (3-mercaptopropionate)), trimethylolpropane tris (3-mercaptopropionate) of formula (1c), pentaeryte of formula (1d) Pitolerythritol tetrakis (3-mercaptoacetate), trimethylolpropane tris (3-mercaptoacetate) of formula (1e), tris of formula (1f) [2- (3-mercaptopropionyloxy) ethyl] isocyanurate (tris [2- (3-mercaptopropionyloxy) ethyl
- the second monomer may be represented by the following Chemical Formula 2.
- L is a spacer group
- R 12 is hydrogen, a thiol group, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C3 to C30 heteroaryl group, a substituted or unsubstituted C3 To C30 cycloalkyl group, substituted or unsubstituted C3 to C30 heterocycloalkyl group, substituted or unsubstituted C2 to C30 alkenyl group, and substituted or unsubstituted C2 to C30 alkynyl group,
- Y 1 is selected from a functional group having a carbon-carbon unsaturated bond, a thiol group, and a combination thereof,
- p is an integer of 2 or more
- q is an integer of 0 or more
- p + q does not exceed the bond number of L.
- the spacer group is a substituted or unsubstituted alkylene group having 4 or more, for example 6 or 8 or more carbon atoms;
- the functional group having a carbon-carbon unsaturated bond is a substituted or unsubstituted C2 to C30 alkenyl group, a substituted or unsubstituted C2 to C30 alkynyl group, acryloyloxy group (acryloyloxy group), methacryloyloxy group (methacryloyloxy group) group), a substituted or unsubstituted C3 to C30 cycloalkyl group having a carbon-carbon unsaturated bond in the ring, and a substituted or unsubstituted C3 to C30 heterocycloalkyl group having a carbon-carbon unsaturated bond in the ring, may be selected. .
- alkenyl group or alkynyl group examples include a vinyl group, an allyl group, an ethynyl group, and the like, and in a substituted or unsubstituted C3 to C30 cycloalkyl group or ring having a carbon-carbon unsaturated bond in the ring.
- substituted or unsubstituted C3 to C30 heterocycloalkyl group having a carbon-carbon unsaturated bond include norbornene group, maleimide group, nadimide group, tetrahydrophthalimide group and May be chosen from a selection of combinations thereof.
- the linker included in the spacer group may be a single bond or a substituted or unsubstituted alkylene group of C1 to C10.
- the first monomer may include 3 to 10 functional groups (Y 1 ) selected from a functional group having a carbon-carbon unsaturated bond, a thiol group, and a combination thereof according to the structure thereof.
- Specific examples of the second monomer include cycloalkanediol di (meth) acrylates such as tricyclodecane dimethanol di (meth) acrylate (A-DCP); Hexanediol di (meth) acrylate, 1,8-octanediol di (meth) acrylate, 1,9-nonanediol di ( Alkanediol di (meth) acrylates, such as meth) acrylate (1,9-nonanediol di (meth) acrylate) and 1,10-decanediol di (meth) acrylate (1,10-decanediol di (meth) acrylate) Rate; 2,2 '-(ethylenedioxydiethane
- the oligomer or polymer may be present in an amount of about 80 to about 100 parts by weight relative to 100 parts by weight of the passivated quantum dots. In the above range, it is possible to stably passivate the quantum dots.
- the first monomer having three or more thiol groups (-SH) at the terminal and two or more functional groups capable of reacting with the thiol group at the terminal and positioned between the two or more functional groups
- Quantum dots passivated with oligomers or polymers formed by reacting a second monomer comprising a spacer group;
- a composition is provided comprising a monomer and a solvent of a matrix polymer.
- the said 1st monomer, the 2nd monomer, and a quantum dot are as above-mentioned.
- the monomer of the matrix polymer may be a monomer that provides a polymer selected from acrylic resins, methacryl resins, silicone resins and thiol-ene resins.
- the solvent may be selected from toluene, benzene, chloroform, dichloromethane, tetrahydrofuran, trioctylamine, xylene, dimethylsulfoxide, dimethylformamide and combinations thereof.
- the passivated quantum dots may be included in about 0.1 to about 20% by weight of the total composition. In the above range, the composition may have a viscosity suitable for application.
- the first monomer having three or more thiol groups (-SH) and two or more functional groups capable of reacting with the thiol group at the terminal and a spacer located between the two or more functional groups
- a solution including a multidentate oligomer formed by reacting a second monomer comprising a spacer group Preparing a solution including a multidentate oligomer formed by reacting a second monomer comprising a spacer group
- Reaction of the said 1st monomer and a 2nd monomer may be advanced using a catalyst. Since the catalyst is used in the absence of quantum dots, it does not affect the quantum efficiency of the quantum dots. In addition, the reaction does not reduce the quantum efficiency of the quantum dot because it uses a solvent mainly used in the quantum dot solution.
- the multidentate oligomers may react with each other to form a polymer.
- quantum dot compositions for application directly to a substrate without purification of quantum dots passivated with oligomers or polymers, thereby improving the yield of the final product.
- the passivated quantum dots are stably encapsulate with oligomers or polymers to prevent deterioration when exposed to moisture or oxygen in the air. This can exhibit a high level of quantum efficiency, and can also improve oxidation resistance and chemical resistance.
- the composition can be applied to a substrate in a known manner to produce a film.
- the coating may be performed by screen printing, imprinting, spin coating, dipping, ink jetting, roll coating, flow coating, drop casting, spray coating, roll printing, or the like. It is not.
- the quantum dots may be applied to devices in various fields, and may be usefully used in, for example, light emitting diodes (LEDs), solar cells, biosensors, image sensors, backlight units, and lighting.
- LEDs light emitting diodes
- solar cells biosensors
- image sensors image sensors
- backlight units backlight units
- Et 3 N triethylamine
- red quantum dots of InP core / ZnS shells were synthesized, and chloroform was used as a solvent and used without purification.
- a red quantum dot (ca. 16 uM, 30 mL) solution was added to the oligomer solution, followed by stirring at room temperature (24) for 3 hours to obtain a quantum dot solution.
- This quantum dot solution is used directly as a quantum dot composition without purification.
- DMSO dimethyl sulfoxide
- THF tetrahydrofuran
- DI water deionized water
- the suspension suspension was diluted with 150 mL of ethyl acetate (EtOAc), transferred to a separatory funnel, and the layers separated. After removing the water layer, the organic layer was washed with deionized water 200 mL and then separated. After repeating this process 5 times, the organic layer was washed once more with 100 mL of brine, and the organic layer separated was dried over MgSO 4 . MgSO 4 was removed by vacuum filter, and the organic layer was concentrated by distillation under reduced pressure.
- EtOAc ethyl acetate
- the reactant matrix of the separated Formulas 1a and 2,2 '-(ethylenedioxydiethane) dithiol was dissolved in 10 mL of THF to obtain an oligomer solution and then transferred to a 100 mL round bottom flask.
- red quantum dots of InP core / ZnS shells were synthesized, and chloroform was used as a solvent and used without purification.
- 10 mL of a red quantum dot (ca. 16 uM) solution was added to the round bottom flask, followed by vigorous stirring at room temperature (24) for 4 hours to obtain a quantum dot solution.
- This quantum dot solution is used directly as a quantum dot composition without purification.
- Figure 2 is a view showing the 1 H NMR measurement results of the matrix obtained after removing the solvent in the oligomer solution according to Example 1. It can be seen from FIG. 2 that an oligomer obtained by reacting dipentaerythritol hexakis (3-mercapmercaptopropionate) of Formula 1a with A-DCP (Sigma-Aldrich) is obtained.
- FIG. 3 and FIG. 4 are transmission electron micrographs of the films obtained after applying the quantum dot solutions of Examples 1 and 2, respectively, to remove the solvent. It is a photograph.
- the quantum dots are uniformly distributed at regular intervals from each other, but the film of FIG. 5 can be confirmed that the quantum dots are coagulated with each other.
- a quantum dot composition was prepared by mixing 20 g of A-DCP (Sigma-Aldrich) in 2 g of diluted quantum dot solution and stirring for 10 minutes. After the solvent was evaporated, the PL strength over time was measured in air at the temperature of 120 of the obtained sample, and is shown in FIG. 6. Samples were obtained at the time intervals shown in FIG. 6.
- FIG. 6 shows the PL intensity over time of passivated and non-passivated quantum dots (Comparative Example 1) obtained in Examples 1 and 2.
- the PL intensity of the quantum dot according to Examples 1 and 2 was less than the variation of the PL intensity with time, while the PL strength decreased rapidly after 3 hours, and almost no PL strength was measured after 29 hours. It can be seen. From this, it can be seen that the quantum dots of Example 1 and Example 2 are superior in thermal stability as compared with the quantum dots (comparative examples) which are not passivated.
- Example 1 and Example 2 500 ⁇ l each of the quantum dot solutions obtained in Example 1 and Example 2 and 20 g of A-DCP (Sigma-Aldrich) were mixed, followed by stirring for 10 minutes to prepare a quantum dot composition. Samples were collected for each evaluation time, and then PL was measured in UV equipment (14.7W Lamp, Wavelength 280 to 360nm peaked at 306nm). The non-passivated quantum dot solution (Comparative Example 1) was also sampled and PL was measured in the same manner. The PL strength measurement results of Example 1 and Comparative Example are shown in FIGS. 7 and 8, respectively.
- FIG. 7 and 8 are graphs showing the results of measuring PL intensity over time in the UV exposure environment of the passivated quantum dots and the non-passivated quantum dots (Comparative Example 1) of Example 1, respectively. 7 and 8, the PL intensity of the quantum dot of Example 1 was little changed with time, but the PL intensity of the quantum dot of the comparative example decreased significantly after one day. From this, it can be seen that the light stability of the quantum dot of Example 1 is superior to that of the non-passivated quantum dot (Comparative Example 1).
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Abstract
Description
Claims (17)
- 말단에 3개 이상의 티올기(-SH)를 가지는 제1 모노머 및 말단에 상기 티올기와 반응할 수 있는 2개 이상의 작용기(functional group)와 상기 2개 이상의 작용기 사이에 위치하는 스페이서기(spacer group)를 포함하는 제2 모노머를 반응시켜 형성된 올리고머 또는 폴리머로 패시베이션(passivation)된 양자점.
- 제1항에서,상기 올리고머 또는 폴리머는 말단에 티올기를 포함하는 다중자리(multidentate) 리간드인 양자점.
- 제1항에서,상기 올리고머 또는 폴리머는 양자점 표면에 삼차원(three-dimensional) 네트워크를 형성하는 양자점.
- 제1항에서,상기 양자점은 InP 양자점; InP 코어 및 ZnS, ZnSe 쉘을 포함하는 양자점; 및 이들의 조합에서 선택되는 양자점.
- 제1항에서,상기 제1 모노머는 하기 화학식 1로 표현되는 화합물인, 양자점:[화학식 1]상기 화학식 1에서,X1 및 X2는 각각 독립적으로 탄소, 치환 또는 비치환된 C6 내지 C30의 아릴렌기, 치환 또는 비치환된 C6 내지 C30의 헤테로아릴렌기, 치환 또는 비치환된 C3 내지 C30의 사이클로알킬렌기 및 치환 또는 비치환된 C3 내지 C30의 헤테로사이클로알킬렌기에서 선택되고,L1 내지 L7은 각각 독립적으로 단일결합; 치환 또는 비치환된 C1 내지 C30의 알킬렌기; 치환 또는 비치환된 C2 내지 C30의 알케닐렌기; 및 적어도 하나의 메틸렌(-CH2-)이 설포닐(-S(=O)2-), 카르보닐(-C(=O)-), 에테르(-O-), 설파이드(-S-), 설폭사이드(-S(=O)-), 에스테르(-C(=O)O-), 아마이드(-C(=O)NRa-)(여기서 Ra은 수소 또는 C1 내지 C10의 알킬기임), 이민(-NRb-)(여기서 Rb은 수소 또는 C1 내지 C10의 알킬기임) 및 이들의 조합에서 선택된 치환기로 치환된 C1 내지 C30의 알킬렌기 또는 C2 내지 C30의 알케닐렌기에서 선택되고,R1 내지 R7은 각각 독립적으로 수소, 티올기, 치환 또는 비치환된 C1 내지 C30의 알킬기, 치환 또는 비치환된 C6 내지 C30의 아릴기, 치환 또는 비치환된 C3 내지 C30의 헤테로아릴기, 치환 또는 비치환된 C3 내지 C30의 사이클로알킬기, 치환 또는 비치환된 C3 내지 C30의 헤테로사이클로알킬기, 치환 또는 비치환된 C2 내지 C30의 알케닐기 및 치환 또는 비치환된 C2 내지 C30의 알키닐기에서 선택되고,n은 0, 1 또는 2의 정수이고, n이 0인 경우 R1 내지 R4중 적어도 3개는 티올기이고, n이 1 또는 2인 경우 R1 내지 R7중 적어도 3개는 티올기이다.
- 제1항에서,상기 제1 모노머는 디펜타에리트리톨 헥사키스(3-머캅토프로피오네이트)(di pentaerythritol hexakis(3-mercaptopropionate), DHM), 펜타에리트리톨 테트라키스(3-머캅토프로피오네이트)(pentaerythritol tetrakis(3-mercaptopropionate)), 트리메틸올프로판 트리스(3-머캅토프로피오네이트)(trimethylolpropane tris(3-mercaptopropionate)), 펜타에리트리톨 테트라키스(3-머캅토아세테이트)(pentaerythritol tetrakis(3-mercaptoacetate)), 트리메틸올프로판 트리스(3-머캅토아세테이트)(trimethylolpropane tris(3-mercaptoacetate)), 트리스[2-(3-머캅토프로피오닐옥시)에틸]이소시아누레이트(tris[2-(3-mercaptopropionyloxy)ethyl]isocyanurate), 트리티오시아누릭 에시드(tricyanuric acid) 및 이들의 조합에서 선택되는 것인 양자점.
- 상기 제2 모노머는 하기 화학식 2로 표현되는 화합물인, 양자점:[화학식 2]상기 화학식 2에서,L은 스페이서기이고,R12은 수소, 티올기, 치환 또는 비치환된 C1 내지 C30의 알킬기, 치환 또는 비치환된 C6 내지 C30의 아릴기, 치환 또는 비치환된 C3 내지 C30의 헤테로아릴기, 치환 또는 비치환된 C3 내지 C30의 사이클로알킬기, 치환 또는 비치환된 C3 내지 C30의 헤테로사이클로알킬기, 치환 또는 비치환된 C2 내지 C30의 알케닐기 및 치환 또는 비치환된 C2 내지 C30의 알키닐기에서 선택되고,R11은 단일결합, 치환 또는 비치환된 C1 내지 C30의 알킬렌기, 서로 인접하지 않는 적어도 하나의 메틸렌기(-CH2-)가 에테르(-O-), 설포닐(-S(=O)2-), 카르보닐(-C(=O)-), 설파이드(-S-), 설폭사이드(-S(=O)-), 에스테르(-C(=O)O-), 아마이드(-C(=O)NRa-)(여기서 Ra은 수소 또는 C1 내지 C10의 알킬기임), 이민(-NRb-)(여기서 Rb은 수소 또는 C1 내지 C10의 알킬기임) 및 이들의 조합에서 선택되는 치환기로 교체된 C1 내지 C30의 알킬렌기, 치환 또는 비치환된 C6 내지 C30의 아릴렌기 및 이들의 조합에서 선택되고,Y1은 탄소-탄소 불포화 결합을 가지는 작용기, 티올기 및 이들의 조합에서 선택되고,p는 0 이상의 정수이고, q는 2이상의 정수이며, p+q는 L의 결합가수를 초과지 않는다.
- 제1항에서,상기 스페이서기는 4개 이상의 탄소수를 가지는 치환 또는 비치환된 알킬렌기; 2개 이상이 모노사이클릭 링이 하나 이상의 링커에 의해 연결되거나 융합된 치환 또는 비치환된 사이클로알킬렌기 또는 헤테로사이클로알킬렌기; 2개 이상의 방향족 링이 하나 이상의 링커에 의해 연결되거나 융합된 치환 또는 비치환된 아릴렌기또는 헤테로아릴렌기; 및 이들의 조합에서 선택되는 것인, 양자점.
- 제1항에서,상기 제2 모노머는 사이클로알칸디올 디(메타)아크릴레이트, 알칸디올 디(메타)아크릴레이트,2,2'-(에틸렌디옥시디에탄)디티올(2,2'-(ethylenedioxydiethane)dithiol), 9,9-비스[4-(2-(메타)아크릴로일옥시 에톡시) 페닐]플루오렌(9,9-bis[4-(2-acryloyloxy ethoxy) pheny]fluorene), 2,2-비스[4-((메타)아크릴옥시 폴리프로폭시]페닐]프로판(2,2-bis[4-(acryloxy polypropoxy]phenyl]propane), 알킬렌 글리콜 디(메타)아크릴레이트, 트리스(2-(메타)아크릴옥시에틸) 이소시아누레이트(tris(2-acryloxyethyl) isocyanurate), 트리 메틸올 프로판 트리(메타)아크릴레이트(trimethylol propane tri(meth)acrylate), 디트리메틸올 프로판 테트라(메타)아크릴레이트(ditrimethylol propane tetra(meth)acrylate), 2,2-비스[4-((메타)아크릴옥시에톡시]페닐]프로판(2,2-bis[4-((meth)acryloxy ethoxy]phenyl]propane), 네오펜틸글리콜 디(메타)아크릴레이트(neopentyl glycol di(meth)acrylate) 및 이들의 조합으로부터 선택되는 것인 양자점.
- 제1항에서,상기 올리고머 또는 폴리머는 패시베이션된 양자점 100 중량부에 대하여 약 80 내지 약 100 중량부의 양으로 존재하는 양자점.
- 제1항 내지 제10항 중 어느 하나의 항에 따른 양자점;매트릭스 폴리머의 모노머; 및용매를 포함하는 조성물.
- 제11항에서,상기 매트릭스 폴리머의 모노머는 아크릴 수지, 메타크릴 수지, 실리콘 수지 티올-엔 수지 및 이들의 조합에서 선택되는 폴리머를 제공하는 모노머인 조성물.
- 제11항에서,상기 용매는 톨루엔, 벤젠, 클로로포름, 디클로로메탄, 테트라하이드로퓨란, 트리옥틸아민, 크실렌, 디메틸설폭사이드, 디메틸포름아마이드및 이들의 조합에서 선택되는 조성물.
- 제11항에서,상기 패시베이션된 양자점은 조성물 전체 중 약 0.1 내지 약 20 중량%로 포함되는 조성물.
- 3개 이상의 티올기(-SH)를 가지는 제1 모노머 및 말단에 상기 티올기와 반응할 수 있는 2개 이상의 작용기(functional group)와 상기 2개 이상의 작용기 사이에 위치하는 스페이서기(spacer group)를 포함하는 제2 모노머를 반응시켜 형성된 다중자리(multidentate) 올리고머를 포함하는 용액을 제조하고,상기 용액에 양자점을 혼합하여 상기 다중자리 올리고머의 티올기를 양자점의 표면에 부착시키는 단계를 포함하는패시베이션된 양자점의 제조방법.
- 제1항 내지 제10항 중 어느 하나의 항에 따른 양자점을 포함하는 필름.
- 제1항 내지 제10항 중 어느 하나의 항에 따른 양자점을 포함하는 소자.
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| KR102696329B1 (ko) * | 2018-10-30 | 2024-08-19 | 엘지디스플레이 주식회사 | 양자점 필름, 엘이디 패키지, 발광다이오드 및 표시장치 |
| KR102419673B1 (ko) | 2019-01-21 | 2022-07-08 | 삼성에스디아이 주식회사 | 양자점, 이를 포함하는 경화성 조성물, 상기 조성물을 이용하여 제조된 경화막, 상기 경화막을 포함하는 컬러필터, 디스플레이 장치 및 상기 경화막의 제조방법 |
| KR102296792B1 (ko) | 2019-02-01 | 2021-08-31 | 삼성에스디아이 주식회사 | 무용매형 경화성 조성물, 이를 이용하여 제조된 경화막, 상기 경화막을 포함하는 컬러필터, 디스플레이 장치 및 상기 경화막의 제조방법 |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107636111A (zh) | 2018-01-26 |
| KR101829746B1 (ko) | 2018-03-29 |
| CN107636111B (zh) | 2020-10-16 |
| TW201643221A (zh) | 2016-12-16 |
| TWI619767B (zh) | 2018-04-01 |
| US20180059442A1 (en) | 2018-03-01 |
| JP6731954B2 (ja) | 2020-07-29 |
| KR20160142100A (ko) | 2016-12-12 |
| US10197820B2 (en) | 2019-02-05 |
| JP2018526468A (ja) | 2018-09-13 |
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