WO2000040586A1 - Borane derivatives and organic electroluminescents - Google Patents
Borane derivatives and organic electroluminescents Download PDFInfo
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- WO2000040586A1 WO2000040586A1 PCT/JP1999/007219 JP9907219W WO0040586A1 WO 2000040586 A1 WO2000040586 A1 WO 2000040586A1 JP 9907219 W JP9907219 W JP 9907219W WO 0040586 A1 WO0040586 A1 WO 0040586A1
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- C09K11/06—Luminescent materials, e.g. electroluminescent or chemiluminescent containing organic luminescent materials
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- H10K85/30—Coordination compounds
- H10K85/321—Metal complexes comprising a group IIIA element, e.g. Tris (8-hydroxyquinoline) gallium [Gaq3]
- H10K85/322—Metal complexes comprising a group IIIA element, e.g. Tris (8-hydroxyquinoline) gallium [Gaq3] comprising boron
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- H10K2102/10—Transparent electrodes, e.g. using graphene
- H10K2102/101—Transparent electrodes, e.g. using graphene comprising transparent conductive oxides [TCO]
- H10K2102/103—Transparent electrodes, e.g. using graphene comprising transparent conductive oxides [TCO] comprising indium oxides, e.g. ITO
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- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
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- H10K85/30—Coordination compounds
- H10K85/321—Metal complexes comprising a group IIIA element, e.g. Tris (8-hydroxyquinoline) gallium [Gaq3]
- H10K85/324—Metal complexes comprising a group IIIA element, e.g. Tris (8-hydroxyquinoline) gallium [Gaq3] comprising aluminium, e.g. Alq3
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- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/631—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
- H10K85/633—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine comprising polycyclic condensed aromatic hydrocarbons as substituents on the nitrogen atom
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- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/917—Electroluminescent
Definitions
- the present invention relates to a novel borane derivative, various materials using the borane derivative, and an organic electroluminescent device (hereinafter, referred to as an organic EL device). More specifically, the present invention relates to borane derivatives having a novel structure, various materials using a porane derivative having a structure useful for applications such as electronic functional materials and optical functional materials, and organic EL devices.
- an organic EL device an organic electroluminescent device
- borane compounds containing boron atoms in their molecules are expected to exhibit unique optical and electronic properties due to the existence of empty ⁇ orbitals of boron atoms.
- borane compounds generally have the drawback of being unstable to air and water, and thus are not suitable for use as materials.
- Document 4 also describes the physical properties of a fluorescent substance in a solution state, but does not describe luminescence in a solid state, nor does it describe application to a luminescent material.
- An organic EL device basically has a structure in which a charge transporting material or an organic compound serving as a luminescent material is sandwiched between two electrodes. It is desirable that the organic EL device has low power consumption and high efficiency, and for that purpose, it is necessary to use an organic compound which is a luminescent material having high luminous efficiency.
- Japanese Patent Application Laid-Open No. 7-102251 also discloses an example in which a boron compound is used for an organic or EL device.
- the boron compound used here had a high driving voltage and a low light emission luminance.
- the present inventors have conducted intensive studies to solve the problem of providing a novel borane derivative, various materials using the borane derivative, and an organic EL device, and as a result, have obtained a porane derivative having a specific structure and a specific structure.
- the present inventors have found that the above problems can be solved by using a borane derivative as a material, particularly in an organic EL device, and have completed the present invention.
- the borane derivative of the present invention is a novel compound represented by the following formula (1).
- the borane derivative of the present invention can be expected to be widely applied not only to light-emitting materials and charge-transporting materials but also to electronic functional materials and optical functional materials utilizing electronic properties derived from borane atoms. Things.
- 1 1 to 1 8 Oyopi 2 2 are each independently a hydrogen atom, a saturated or unsaturated hydrocarbon group, an aromatic group, a heterocyclic group, a substituted amino group, a substituted boryl group, an alkoxy X, Y and Zi each independently represent a saturated or unsaturated hydrocarbon group, an aromatic group, a heterocyclic group, a substituted amino group, an alkoxy group or an aryloxy group;
- the substituents of Z 2 and Z 2 may combine with each other to form a condensed ring, and n represents an integer of 1 to 3, and when n is 2 or more, Z i may be different.
- n is 1, X, Y and R 2 are methyl groups, and R s Does not include the case where is a hydrogen atom or a substituted boryl group, and the case where n is 3 and Z 1 is a methyl group.
- borane derivatives represented by the formula (1) those in which at least one substituted or unsubstituted 9-anthryl group is bonded to a boron atom are preferable.
- borane derivative of the present invention include compounds represented by the following formulas (3) to (9).
- the compound of the formula (3) is a borane derivative in which n is 3, R 4 R is a hydrogen atom, and ⁇ and Z s are benzo-condensed in the above formula (1).
- the compound of the formula (5) is a compound of the above formula (1), wherein R 4 to R 7 are a hydrogen atom, R 8 is a phenyl group, n is 3, and Z, and Z 2 are benzo-condensed borane. It is a derivative.
- n 2
- R 1 and R 3 to R 8 are hydrogen atoms
- R 2 , X and Y are methyl groups
- Z i and Z 2 are all It is a borane derivative obtained by azo condensation.
- n is 2
- RJ and R 3 to R 7 are a hydrogen atom
- R 2 , X and Y are a methyl group
- one of R 8 is an anthryl mesitylporyl group
- the remaining one of R 8 is a hydrogen atom, and the borane derivative obtained by benzo-condensation of Z 2 .
- n 3
- R 4 to R 8 are a hydrogen atom
- Z 2 is subjected to benzo-condensation at one place, and the remaining uncondensed 2
- One Z is a methyl group
- the other two non-condensed Z are borane derivatives of a hydrogen atom.
- n is 1, R 3 to R 7 are a hydrogen atom, R 2 , X and Y are methyl groups, R 8 is a phenyl group, ⁇ and Zeta 2 and is benzofused borane derivatives.
- the borane derivative used in the various materials of the present invention that is, the light emitting material, the charge transport material, and the organic EL device-related materials (light emitting layer, charge transport layer) is represented by the following formula (2).
- Ri Rg and Z 2 each independently represent a hydrogen atom, a saturated or unsaturated hydrocarbon group, an aromatic group, a heterocyclic group, a substituted amino group, a substituted boryl group, an alkoxy group or an aryloxy group.
- the borane derivative is preferably bulky in order to be stable even in the air and have sufficient durability and performance as a material, and has an anthracene ring and / or a naphthalene ring. It is desirable.
- At least one substituted or unsubstituted 9-anthryl of the borane derivative represented by the above formula (2) is included in the light emitting material, the charge transport material and the organic EL device of the present invention. Those having attached groups are preferred.
- borane derivatives include the compounds represented by the above formulas (3) to (9) and the compounds represented by the following formulas (10) to (14).
- the borane derivative of the present invention and the borane derivative used for various materials of the present invention can be synthesized by a known method represented by the following production method. it can. That is, the compound can be synthesized by reacting a compound represented by the general formula (15) with a base, followed by reacting with a borane compound.
- Ar represents the following formula (16) or (17), and W represents a halogen atom.
- R 1 to R 3 each independently represent a hydrogen atom, a saturated or unsaturated hydrocarbon group, an aromatic group, a heterocyclic group, a substituted amino group, a substituted boryl group, an alkoxy group, or an aryloxy group.
- X and Y each independently represent a saturated or unsaturated hydrocarbon group, an aromatic group, a heterocyclic group, a substituted amino group, an alkoxy group or an aryloxy group.
- Oyobi 2 2 are each independently a hydrogen atom, a saturated or unsaturated hydrocarbon group, an aromatic group, a heterocyclic group, a substituted amino group, a substituted boryl group, an alkoxy Z represents a saturated or unsaturated hydrocarbon group, an aromatic group, a heterocyclic group, a substituted amino group, an alkoxy group or an aryloxy group, and the substituents of Z i and Z 2 represent
- the base used in this production method may be, for example, an organic lithium reagent such as n-butyllithium, tert-butyllithium, or phenyllithium, magnesium, or magnesium bromide. And the like.
- the solvent used is not particularly limited as long as it is inert to these bases.
- Ether solvents such as getyl ether or tetrahydrofuran (hereinafter referred to as THF) or aromatic solvents such as benzene and toluene are used.
- examples of the borane compound to be used include halogenated borane such as trichloroborane, trifluoroborane or a complex thereof, and alkoxyborane such as trimethoxyborane or trisopropoxyborane.
- reaction temperature is not particularly limited, but is usually preferably about 178 ° C to 120 ° C.
- reaction time There is no particular limitation on the reaction time for these reactions, and the reaction may be stopped when the reaction has sufficiently proceeded.
- the reaction may be tracked by a general analytical means such as NMR or chromatography, and the end point of the reaction may be determined at an optimum time.
- the borane derivative of the present invention can also be obtained by subjecting the obtained compound to a substitution reaction.
- Substituents added by the substitution reaction include methyl, ethyl, normal propyl, isopropyl, cyclopentyl, tert-butyl and other alkyl groups, vinyl groups, aryl groups, butyr groups, and styryl groups.
- Amino groups such as alkenyl groups, methoxy groups, ethoxy groups, propoxy groups, phenyloxy groups, etc.
- aryloxy groups dimethylamino groups, diphenylamino groups, etc., trimethylsilyl groups, dimethyl-tert-butylsilyl groups, trimethoxysilyl groups and Silyl groups such as triunylsilyl group, boryl groups such as dianthyl boryl group, dimesityl boryl group, phenyl group, naphthyl group, anthryl group, biphenyl group, tolyl group, pyrenyl group, perylenyl group, anisyl group, turf Aryl groups such as phenyl and phenanthrenyl groups; And heterocyclic rings such as a phenanthrolyl group, a benzochenyl group, a benzothiazolyl group, an indolyl group, a silacyclopentagenenyl group and a pyridyl group.
- boryl groups such as dianthyl boryl group, dimesityl boryl group, phenyl group,
- the organic EL device of the present invention basically has a structure in which a borane derivative layer containing a borane derivative represented by the above formula (2) as a main component is sandwiched between a pair of electrodes and (anode and cathode). Things.
- the borane derivative can be used as both a light emitting material and a charge transport material, it is suitable as a material for a light emitting layer and a charge transport layer (a hole injection layer, a hole transport layer, an electron injection layer, and an electron transport layer).
- the obtained borane derivative layer effectively functions as a light emitting layer and a charge transport layer.
- a hole injection material, a hole transport material, a light emitting material, an electron injection material, an electron transport material, or the like other than the borane derivative may be added to the borane derivative layer.
- an electron-donating compound and an electron-accepting compound serving as a charge transporting material are often used, and a mixture thereof is added or these are laminated and used. However, they are also known to form undesirable charge transfer complexes or exciplexes.
- the borane derivative used in the present invention since the bulky group bonded to the boron atom is arranged in a propeller shape centering on the boron atom, it is difficult to form a charge transfer complex or an exciplex. It has a structure. Accordingly, when the borane derivative is used as a material for an organic EL device as an electron donating compound or an electron accepting compound, there is an advantage that a highly efficient device can be easily obtained.
- a hole injection layer, a hole transport layer, a light emitting layer, an electron injection layer, an electron transport layer, an interface layer, and the like may be arbitrarily provided between the electrodes in addition to the borane derivative layer. No problem.
- the hole injection layer, the electron injection layer, the hole transport layer, the electron transport layer, and the interface layer are not necessarily required, but by providing these layers, the luminous efficiency can be improved.
- the introduction of a hole injection layer and a hole transport layer greatly improves luminous efficiency.
- the organic EL device of the present invention is preferably supported on a substrate.
- the substrate only needs to have mechanical strength, thermal stability and transparency, and glass, a transparent plastic film, or the like can be used.
- anode material used for the anode of the organic EL device of the present invention metals, alloys, electrically conductive compounds having a work function greater than 4 eV, and mixtures thereof can be used.
- a metal such as A u, C ul, indium tin O hexa Lee de (hereinafter, referred to as ITO), S N_ ⁇ 2, a conductive transparent material such as Z eta theta is like et be.
- cathode material used for the cathode of the organic EL device of the present invention metals, alloys, electrically conductive compounds, and mixtures thereof having a work function smaller than 4 eV can be used.
- specific examples include calcium, magnesium, lithium, aluminum, magnesium alloys, lithium alloys, aluminum alloys, and the like, and mixtures thereof include aluminum lithium, magnesium / silver, magnesium / indium, and the like.
- the electrodes has a light transmittance of at least 10% in order to efficiently extract light emitted from the organic EL element.
- the sheet resistance as an electrode is preferably several hundred ⁇ or less.
- the film thickness depends on the properties of the electrode material, and is usually selected from the range of 10 nm to 1 ⁇ , preferably 10 to 400 nm.
- Such an electrode can be manufactured by forming a thin film by a method such as vapor deposition and sputtering using the above-mentioned electrode materials (anode material and cathode material).
- the light-emitting layer which is an essential constituent layer of the organic EL device of the present invention, has the formula (2)
- a borane derivative is preferably used, a light-emitting material other than the borane derivative may be used. Further, by using a mixture of the borane derivative represented by the formula (2) and a light emitting material other than the borane derivative, light having a wavelength different from that of the borane derivative can be generated, and the luminous efficiency can be further improved. It should be noted that there is no problem in using two or more borane derivatives represented by the formula (2) in combination.
- Such luminescent materials other than the borane derivative represented by the formula (2) include the luminescent materials described in “Polyfunctional Materials” edited by the Society of Polymer Science, “Optical Functional Materials”, Kyoritsu Shuppan (1991), p.236. Known substances such as photofluorescent materials, fluorescent brighteners, laser dyes, organic scintillators, and various fluorescent analysis reagents can be mentioned.
- polycyclic condensed compounds such as anthracene, phenanthrene, pyrene, chrysene, perylene, coronene, rubrene, and quinatalidone; oligophenylene compounds such as quarter phenyl; 1,4-bis (2-methylstyrinole) benzene 1,4-bis (4-methylstyryl) benzene, 1,4-bis (4-methyl-5-phenyl-2-oxazolyl) benzene, 1,4-bis (5-phenyl-2-oxazolyl) benzene , 2,5-bis (5- tert-butyl-2-benzoxazolyl) thiophene, 1,4-diphenyl-1,3-phenyl "thagene, 1,6-diphenyl-1,3,5- Hexatriene, scintillator for liquid scintillation such as 1,1,4,4-tetraphenyl-1,3-butadiene,
- the hole injection layer which is a selective component layer of the organic EL device of the present invention, can be obtained by using a hole injection material.
- a hole injection material In this case, one or more hole injection materials are used to form a single hole injection layer.
- An injection layer may be obtained, and a plurality of hole injection layers may be obtained using several different hole injection materials.
- the hole transporting layer which is a selective component layer of the organic EL device of the present invention, comprises a hole transporting material.
- one hole transport layer may be obtained using one or more hole transport materials, and a plurality of hole transport layers may be obtained using several different types of hole transport materials.
- a hole transport layer may be obtained.
- a borane derivative represented by the above formula (2) can be used as the hole injection material and the hole transport material.
- any known substance that can be used for the hole injection layer and the hole transport layer of the organic EL device include, for example, carbazole derivatives (N-phenylcarbazole, polybutyl carbazole, etc.), triarylamine derivatives (TPD, polymers having an aromatic tertiary amine in the main chain or side chain).
- NPD 1,1-bis (4-di-p-tolylaminophenyl) cyclohexane, ⁇ , ⁇ '-diphenyl-N, ⁇ '-dinaphthyl-4,4'-diaminobiphenyl (hereinafter abbreviated as NPD) ), 4, 4 ', 4 "-tris ⁇ - (3-methylphenyl) - ⁇ -phenylamino) triphenylamine, Journal of the' Chemical Society Society Chemical Communication No. 2175 page 1996 Compounds described in Japanese Patent Application Laid-Open Nos.
- JP-A No. 8-100172 and JP-A-8-48656 such as starburst amine derivatives described in Advanced Materials, Vol. 6, page 677 (1994), stilbenes, etc. Derivatives (Chemical Society of Japan 72nd Annual Meeting Preprints (11), p. 1392, pp. 29898, etc.), phthalocyanine derivatives (metal-free, copper phthalocyanine, etc.), polysilanes, and the like.
- the electron injection layer which is a selective constituent layer of the organic EL device of the present invention, can be obtained by using an electron injection material.
- one or more electron injection materials are used to obtain one electron injection layer.
- the electron transport layer which is a selective component layer of the organic EL device of the present invention, can be obtained by using an electron transport material.
- one or more electron transport materials are used to form one electron transport layer.
- Layers may be obtained, and a plurality of electron transport layers may be obtained using several different types of electron transport materials.
- the electron injection material and the electron transport material it is preferable to use a borane derivative represented by the above formula (2), but in photoconductive materials, those conventionally used as electron transfer compounds, Any known substance that can be used for the electron injection layer and the electron transport layer of the organic EL element can be selected and used.
- Examples of such known materials include, for example, Jifuwe two Rukinon derivative (electrophotographic Journal, 30,3 (1991) as described in, etc.), Peri Ren derivative (J.Apply.Phys., 2 ⁇ , 2 6 9 (1988)), oxadiazole derivatives (Jpn. J. Appl. Phys., 27, L713 (1988), Applied 'Physics' Letter (Appl. Phys. Lett.), 55, 1 489 (1989), such as those described in), such as those described in Chiofen derivative (JP-a-4 one 2 1 2286 JP), Toriazoru derivative (Jpn.
- the hole injecting material, hole transporting material, light emitting material, electron injecting material and the like which can be used in the organic EL device of the present invention preferably have a T g of 80 ° C. or higher, more preferably a T g of 80 ° C. or higher. More than 100 ° C.
- the interface layer which is a selective constituent layer of the organic EL device of the present invention, is preferably a layer capable of promoting the injection of electrons from the cathode, and a layer capable of preventing holes from flowing into the cathode. These are selected depending on the compatibility with the material used for the cathode, and specific examples thereof include lithium fluoride, magnesium fluoride, calcium fluoride, and the like.
- Each layer constituting the organic EL device of the present invention can be formed by forming a material constituting each layer into a thin film by a known method such as an evaporation method, a spin coating method, and a casting method.
- each layer formed in this way is not particularly limited, and can be appropriately selected according to the properties of the material. It is selected within the range of ⁇ 500 nm.
- the vapor deposition conditions vary depending on the type of the borane derivative, the target crystal structure and the association structure of the molecule-cumulative film, but generally, the boat heating temperature is 50 to 400 ° C. , vacuum 1 0- 6 ⁇ :. 1 0- 3 P a, the deposition rate 0 0 1 ⁇ 5 O n mZ seconds, the substrate temperature one 1 5 0 tens 3 0 0 ° C, film thickness 5 eta [pi! It is desirable to select an appropriate value within the range of 5 ⁇ m.
- an organic EL device of the present invention a method for producing an organic EL device having the above-mentioned constitution (1) and comprising the anode Z-borane derivative layer / cathode will be described.
- the anode After forming a thin film made of an anode material on a suitable substrate by a vapor deposition method so as to have a film thickness of preferably in the range of 10 to 200 nm, the anode is formed.
- a borane derivative thin film is formed thereon to form a light emitting layer, and a thin film made of a cathode material is formed on the light emitting layer to a thickness of 1 ⁇ m or less by vapor deposition to form a cathode.
- the organic EL device of (1) is obtained.
- the production order can be reversed, and the cathode, the light emitting layer, and the anode can be produced in this order.
- the anode When a DC voltage is applied to the organic EL device obtained in this manner, the anode may be applied with + polarity and the cathode may be applied with one polarity. Light emission can be observed from the transparent electrode side (anode or cathode, and both).
- the organic EL element also emits light when an AC voltage is applied.
- the waveform of the applied AC may be arbitrary.
- Example 2 The synthesis was carried out in the same manner as in Example 1, except that 9,10-dilithioanthracene used in Example 1 was changed to mesityl lithium.
- a transparent support substrate was prepared by depositing ITO to a thickness of 100 nm on a glass substrate of 25 mmX 75 mmX 1.1 mm by an evaporation method (manufactured by Tokyo Sanyo Vacuum Co., Ltd.). This transparent support substrate is fixed to a substrate holder of a commercially available vapor deposition device (manufactured by Vacuum Equipment Co., Ltd.), and N, N, dinaphthyl ⁇ , ⁇ '-diphenylbenzidine (hereinafter abbreviated as NPD) is added.
- a quartz crucible containing 4-diphenylsilacyclopentadiene (hereinafter referred to as ⁇ ), a graphite crucible containing magnesium, and a Daraphite crucible containing silver were installed.
- Pressure of the vacuum vessel was reduced to 1 X 10- 3 P a, and heating the crucible NPD containing, by depositing NPD to a film thickness of 5 0 nm to form a hole transport layer, then the above formula
- the crucible containing the compound represented by (10) is heated and vapor-deposited to a thickness of 15 nm to form a light-emitting layer.
- the crucible containing PYPY is heated to form a film.
- An electron transporting layer was formed by vapor-depositing ⁇ to have a thickness of 35 ⁇ m.
- the deposition rate was between 0.1 and 0.211111 ns.
- the I TO electrodes anode, a cathode an alloy electrode of magnesium and silver, the indicia pressurizing a DC voltage of about 1 m AZ cm 2 of current flows, the luminance of about 100 cd / m 2, wavelength 51
- a device was prepared in the same manner as in Example 4, except that the compound represented by the formula (10) was replaced with tris (8-hydroxyquinoline).
- a device was prepared in the same manner as in Example 4 except that the compound represented by the above formula (10) was changed to trimesityl borane.
- a device was prepared in the same manner as in Example 4 except that the thickness of the layer made of the compound represented by the formula (10) was changed to 5 O nm without using PYPY used in Example 4.
- the I tO electrodes an anode, a cathode an alloy electrode of magnesium and silver, the indicia pressurizing a DC voltage of about 1 mA / cm 2 current flows, brightness of about 6 cd / m 2, wavelength 5 1 5 eta m A green luminescence was obtained.
- a device was prepared in the same manner as in Example 4, except that the compound represented by the formula (10) used in Example 4 was replaced with the compound represented by the formula (4).
- a device was prepared in the same manner as in Example 4, except that the compound represented by the formula (10) used in Example 4 was replaced with the compound represented by the formula (11).
- the I TO electrodes anode, a cathode an alloy electrode of magnesium and silver, the indicia pressurizing a DC voltage of about 1 mA / cm 2 current flows, the luminance of about 3 0 c dZm 2, blue light emission wavelength 464 nm Obtained.
- the transparent supporting substrate used in Example 4 was fixed to a substrate holder of a vapor deposition apparatus and a quartz crucible containing NPD, a quartz crucible containing a compound represented by the formula (10), and a tungsten crucible containing aluminum A crucible made of tundane and a crucible made of tundatin containing lithium fluoride were attached.
- Pressure of the vacuum vessel was reduced to 1 X 1 0- 3 P a, and heating the crucible NPD containing, by depositing NPD to a film thickness of 5 0 nm to form a hole transport layer, then the formula ( The crucible containing the compound represented by (10) was heated and evaporated to a thickness of 50 nm to form an electron-transporting luminescent layer. The deposition rate was between 0.1 and 0.2 nm / sec. Then pressure of the vacuum vessel was reduced to 2 X 1 0- 4 P a, heated tungsten crucible was deposited lithium fluoride on the 2 nm organic layer, and finally aluminum was 1 00 nm deposited, organic An EL device was obtained.
- a device was prepared in the same manner as in Example 8, except that the compound represented by the formula (10) used in Example 8 was changed to a compound represented by the formula (4).
- the I TO electrodes anode, a cathode an alloy electrode of magnesium and silver, the indicia pressurizing the DC voltage, the current flows of about 2 mA / cm 2, the luminance of about 1 5 cd / m 2, wavelength 6 1 6
- a device was prepared in the same manner as in Example 4, except that the compound represented by the formula (10) used in Example 4 was replaced with the compound represented by the formula (9).
- a device was prepared in the same manner as in Example 4, except that the compound represented by the formula (10) used in Example 4 was replaced with the compound represented by the formula (12).
- the I TO electrodes anode, a cathode an alloy electrode of magnesium and silver, the indicia pressurizing a DC voltage, from about 0. ⁇ ⁇ / C m 2 of current flows, the luminance of about 1 0 0 cd / m 2, wavelength of 5 1 A green emission of 1 nm was obtained.
- a device was prepared in the same manner as in Example 4, except that the compound represented by the formula (10) used in Example 4 was replaced with the compound represented by the formula (13).
- the transparent supporting substrate used in Example 4 was fixed to a substrate holder of a vapor deposition apparatus, and a quartz crucible containing an NPD, a quartz crucible containing a compound represented by the formula (10), and a quartz crucible represented by the formula (11)
- a quartz crucible containing a compound, a quartz crucible containing PYP Y, a tungsten crucible containing aluminum, and a tungsten crucible containing lithium fluoride were attached.
- Example 13 The compound represented by the formula (10) used in Example 13 was added to the compound represented by the formula (14), and the compound represented by the formula (11) was added to tris 8-hydroxyquinoline aluminum.
- An element was prepared in the same manner as in Example 13 except that the element was changed to a yum.
- the borane derivative which is a novel compound of the present invention, has high luminous efficiency in a solid state, and thus is suitable as a luminescent material. It is also useful as optoelectronic functional materials such as electrophotography, nonlinear optical materials, and conductive materials.
- the organic EL device of the present invention uses a luminescent material having high luminous efficiency, a display with low power consumption and a long life can be produced by using the luminescent material.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Inorganic Chemistry (AREA)
- Electroluminescent Light Sources (AREA)
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE69932263T DE69932263T2 (de) | 1999-01-08 | 1999-12-22 | Borderivate und organische elektrolumineszierende verbindungen |
| US09/869,920 US6767654B2 (en) | 1999-01-08 | 1999-12-22 | Organic electroluminescent device |
| JP2000592294A JP4055363B2 (ja) | 1999-01-08 | 1999-12-22 | ボラン誘導体および有機電界発光素子 |
| EP99961319A EP1142895B1 (en) | 1999-01-08 | 1999-12-22 | Borane derivatives and organic electroluminescents |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11/2786 | 1999-01-08 | ||
| JP278699 | 1999-01-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2000040586A1 true WO2000040586A1 (en) | 2000-07-13 |
Family
ID=11539046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP1999/007219 Ceased WO2000040586A1 (en) | 1999-01-08 | 1999-12-22 | Borane derivatives and organic electroluminescents |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6767654B2 (ja) |
| EP (1) | EP1142895B1 (ja) |
| JP (1) | JP4055363B2 (ja) |
| DE (1) | DE69932263T2 (ja) |
| WO (1) | WO2000040586A1 (ja) |
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- 1999-12-22 US US09/869,920 patent/US6767654B2/en not_active Expired - Lifetime
- 1999-12-22 DE DE69932263T patent/DE69932263T2/de not_active Expired - Fee Related
- 1999-12-22 JP JP2000592294A patent/JP4055363B2/ja not_active Expired - Fee Related
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| JP2005200638A (ja) * | 2003-12-19 | 2005-07-28 | Showa Denko Kk | ホウ素を含有する高分子化合物およびこれを用いた有機発光素子 |
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Also Published As
| Publication number | Publication date |
|---|---|
| US20030152800A1 (en) | 2003-08-14 |
| DE69932263D1 (de) | 2006-08-17 |
| JP4055363B2 (ja) | 2008-03-05 |
| EP1142895B1 (en) | 2006-07-05 |
| EP1142895A1 (en) | 2001-10-10 |
| EP1142895A4 (en) | 2003-07-23 |
| DE69932263T2 (de) | 2007-06-06 |
| US6767654B2 (en) | 2004-07-27 |
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