WO2012099240A1

WO2012099240A1 - White organic electroluminescent element

Info

Publication number: WO2012099240A1
Application number: PCT/JP2012/051192
Authority: WO
Inventors: 安達　千波矢; 正幸八尋; 憲一合志; 修造平田; ヒョジョンホ; 是史久保田; 平田　修; 佑紀柴野
Original assignee: 国立大学法人九州大学; 日産化学工業株式会社
Priority date: 2011-01-20
Filing date: 2012-01-20
Publication date: 2012-07-26
Also published as: JP5888748B2; JPWO2012099240A1; TW201248961A

Abstract

This white organic electroluminescent element (1) is provided with a positive electrode (10), a negative electrode (20), and a light-emitting layer (30), which emits white light as a whole, disposed between these electrodes (10, 20). Said light-emitting layer (30) contains a carbazole derivative that is liquid at room temperature, such as that represented by formula (5), and red, green and blue light-emitting materials etc. Thus, white organic electroluminescent elements, which are provided with a liquid light-emitting layer that emits white light and that can maintain a liquid state both when being driven and when not being driven, can be provided.

Description

Organic electric field white light emitting device

The present invention relates to an organic electric field white light emitting element, and more particularly, to an organic electric field white light emitting element provided with a light emitting layer that is liquid at room temperature.

An organic electroluminescence element (organic light emitting element) (hereinafter referred to as an organic EL element) has a configuration in which a thin film organic layer (light emitting layer) containing at least one light emitting organic compound is sandwiched between a cathode and an anode. Injecting and transporting electrons and holes (holes) to this thin film and recombining them to generate excitons (excitons), light emission when these excitons are deactivated (fluorescence / phosphorescence) This is an element that emits light using
Since this organic EL element is a light-emitting element using a light-emitting organic compound in a light-emitting layer, it is expected to be applied as a display that is lightweight, flexible, inexpensive, and capable of large-area full-color display. In addition, since the organic EL element is more suitable as a diffused light source by surface emission than a light emitting diode (LED), development of illumination using an organic EL element that emits white light is being promoted.

The light-emitting layer used in these organic EL devices is driven by three processes: transport of both holes and electrons (charge), formation of excitons by recombination of these carriers, and light emission.
For this reason, a material satisfying these three functions is indispensable for the light emitting layer. Usually, the material includes a carrier-transporting light emitting material that exhibits these three functions, and a plurality of types to supplement these three functions. A carrier transport material / light-emitting material in which organic substances are mixed is used.

When the above carrier transporting material / luminescent material is used for the light emitting layer, the light emitting material is diluted with the carrier transporting material, so that concentration quenching is suppressed and an organic EL device having high luminous efficiency is expected to be obtained. . For this reason, intensive research has been conducted on a wide variety of combinations of light-emitting materials and carrier transport materials.
By the way, it is not necessary to simply use a light emitting material for a light emitting layer having a target fluorescence wavelength and a high quantum yield, and it is necessary to select a carrier transport material suitable for a specific fluorescent dye. is there. This is because the carriers transported into the carrier transport material recombine, and the excitation energy generated there induces the emission of the fluorescent dye doped in the carrier transport material.
Therefore, it is indispensable to select the mutual relationship between the HOMO / LUMO energy levels of each component of the light emitting material / carrier transport material or a combination of their efficient energy transfer.

In the case of producing an organic EL element that emits white light, a plurality of types of light emitting materials are often mixed to obtain white light emission having a wide spectral width. However, a plurality of types of light emitting materials included in the light emitting layer are mixed at an appropriate ratio. Since it is necessary to excite them simultaneously, the charge balance needs to be more precise.
In this case, in addition to the above-described combination of the light emitting material / carrier transport material, the mutual relationship between HOMO / LUMO energy levels between the light emitting materials or a combination of their efficient energy transfer is also an important selection condition.

One of the important problems of organic EL elements used in conventional displays and lighting is deterioration called baking. This phenomenon is considered to be caused by the fact that impurities are decomposed or modified by applying impurities to the organic EL element for a long time.
In order to prevent this deterioration, it is necessary to remove moisture and oxygen on the electrode surface and slight impurities contained in the organic thin film.
As a specific technique, a method of sealing a desiccant or the like is used in order to improve the purity and stability of the organic substance constituting the organic EL element and to prevent the entry of oxygen and moisture from the outside.

However, from the practical aspect, the lifetime of the organic EL element is required to be at least 100 cd / m ² and 100,000 hours, and it can be said that decomposition of the organic matter during the period and deterioration of the element due to the generated impurities are inevitable.
In the above-described existing organic EL elements, the baking of each of these organic layers causes deterioration of the elements, and if one of the plurality of organic layers constituting the organic EL elements deteriorates, the lifetime of the entire element is greatly increased. Affect.
If this deteriorated organic layer has a replaceable structure, for example, by a cartridge or the like, it can be considered that a new organic layer can be continuously supplied, so that the organic EL element can be driven semipermanently.
However, most of the existing organic EL elements described above use a solid organic thin film, and it is very difficult to replace only the deteriorated organic layer.

In recent years, technologies that lead to the solution of the above problems are being developed. For example, Non-Patent Document 1 reports an organic EL element in which a light emitting layer is liquefied. By making the light emitting layer liquid or semi-solid, it can be said that the deteriorated liquid light emitting layer is easier to replace than the solid thin film layer, and at least the light emitting layer can be a replaceable light emitting element.
However, the organic EL element in which the light emitting layer is liquefied, which is disclosed in Non-Patent Document 1, is hardly an organic EL element exhibiting such high characteristics that it can be replaced with existing lighting or a display. And the device structure needed to be optimized.

As disclosed in Non-Patent Document 2, as a means for improving the characteristics of an organic EL device having a liquid light-emitting layer, it has been reported that the same characteristics can be improved by adding an organic salt to the liquid light-emitting layer. Thus, it can be said that the light emission characteristics of the organic EL element using the liquid light emitting layer are approaching the light emission characteristics of the conventional solid organic EL element.
However, there have been no reports of white light emission for lighting applications of organic EL elements, while reports have been made on deterioration-free elements and improvement of element characteristics using replaceable liquid light-emitting layers.

JP 2009-54952 A

A conventional organic EL element made of a solid thin film has been produced by a vapor deposition process of each functional low molecule and a coating process of each functional polymer. In particular, it can be said that the coating process is excellent in productivity in that a thin film can be easily produced over a wide range on the substrate as compared with the vapor deposition process. For this reason, at present, white organic EL elements that require a large area such as illumination are being vigorously developed by a coating process.
However, some problems still remain in the coating process, and in particular, improvement of device characteristics and further simplification of the element manufacturing process are required.
Further, there remain problems such as development of a technique for producing a uniform thin film over a larger area, and the produced thin film is easily peeled off at the interface.
On the other hand, a light-emitting element called electrochemiluminescence (ECL) has been reported as a similar technique, and research on extracting white light emission from this ECL is also underway.
For example, in Patent Document 1, white light emission is achieved by stacking two different light emitting layers.
However, as described above, at present, there is a demand for simplification of the structure and process of the element, and as far as the inventors know, no examples of successful white light emission from a single-layer liquid light-emitting layer have been reported.
In this respect, a light-emitting element having a liquid and white light-emitting layer solves the above-described problems of simplification of the manufacturing process, avoidance of interfacial peeling, and large area, and can be replaced even if the light-emitting layer deteriorates By doing so, it can be made deterioration-free.
The present invention has been made in view of such circumstances, and provides an organic electric field white light-emitting element that includes a liquid light-emitting layer that emits white light and that can maintain a liquid state when driven and not driven. For the purpose.

As a result of intensive investigations to achieve the above object, the present inventors have found a light emitting layer that is liquid at room temperature and can maintain a liquid state at both driving and non-driving, and emits white light. Was completed.

That is, the present invention
1. An organic electric field white light emitting device comprising an anode, a cathode, and a light emitting layer that emits white light at room temperature and is interposed between these electrodes,
2. The organic light-emitting white light-emitting element that emits white light as a whole, wherein the light-emitting layer includes a material having a carrier transporting ability and a light-emitting ability that are liquid at room temperature, and a light-emitting material.
3. The organic light-emitting white light-emitting element that emits white as a whole, wherein the light-emitting layer includes a carrier transport material that is liquid at room temperature and a light-emitting material.
4). 2 or 3 organic electric field white light emitting elements, wherein the light emitting material comprises a light emitting material that is liquid at room temperature;
5). The organic light-emitting white light-emitting element according to any one of 2 to 4, wherein the light-emitting material includes two kinds of light-emitting materials having complementary colors, and emits white light as a whole.
6). Two organic electric field white light emitting elements that emit light white as a whole, wherein the material having the carrier transporting ability and the light emitting ability and the light emitting material are in a complementary color relationship,
7). The organic light-emitting white light-emitting element according to any one of 2 to 4, wherein the light-emitting material includes red, green, and blue light-emitting materials and emits white as a whole.
8). The material having a carrier transporting ability and a light emitting ability includes a material that emits light of at least one color of red, green, and blue, and the light emitting material emits light of at least one color of red, green, and blue Two organic electric field white light-emitting elements that emit a white light as a whole, including a material that emits light of each color of red, green, and blue as a whole.
9. The light emitting material is one or more red light emitting materials selected from a pyran compound, a tetracene compound, a naphthacene compound, a styryl compound, a europium complex, an iridium complex, an osmium complex, and a ruthenium complex. Any organic electric field white light emitting element,
10. The organic light-emitting white light-emitting element according to any one of 2 to 8, wherein the light-emitting material is one or more green light-emitting materials selected from a coumarin compound, a quinacridone compound, an anthracene compound, an iridium complex, and a zinc complex,
11. Any of 2 to 8, wherein the light emitting material is one or more blue light emitting materials selected from diphenylanthracene compounds, perylene compounds, carbazole compounds, styryl compounds, fluorene compounds, and iridium complexes. Organic electric field white light emitting element,
12 The organic light-emitting white light-emitting element according to any one of 2 to 4, wherein the light-emitting material emits white light alone,
13. The organic electric field white light emitting element of 2 or 3, wherein the material having carrier transporting ability and light emitting ability or the carrier transporting material is a compound represented by the formula (1):

(Wherein X is a carrier transport and light-emitting moiety, and is a carbazole derivative, thianthrene derivative, phenothiazine derivative, azepine derivative, triazole derivative, imidazole derivative, oxadiazole derivative, arylcycloalkane derivative, triarylamine derivative, phenylenediamine. Derivatives, stilbene derivatives, oxazole derivatives, triphenylmethane derivatives, pyrazoline derivatives, fluorenone derivatives, polyaniline derivatives, silane derivatives, pyrrole derivatives, fluorene derivatives, porphyrin derivatives, quinacridone derivatives, triarylphosphine oxide derivatives, carbon condensed ring dyes, metals Or represents a metal-free phthalocyanine derivative or benzidine, and Y represents at least one substituent linked to the carrier transport and light-emitting moiety. A is, an ether bond, a thioether bond, an ester bond, an alkyl group of carbonic acid ester bond or amide 1 carbon atoms which may contain a binding and 30.)
14 13 organic electric field white light-emitting elements, wherein the charge transport part X is carbazole;
15. 13 or 14 organic electric field white light-emitting element, wherein the substituent Y is an alkyl group having 1 to 30 carbon atoms which may contain an ether bond,
16. 15 organic electric field white light emitting elements represented by the formula (3), wherein the carrier transport material is:

(Wherein Y represents the same meaning as described above.)
17. 16 organic electric field white light emitting elements represented by formula (4), wherein the carrier transport material is:

18. 16 organic electric field white light emitting elements in which the carrier transport material is represented by the formula (5)

I will provide a.

In the organic electric field white light emitting device of the present invention, the light emitting layer can be maintained in a liquid state both when driven and when not driven. For this reason, when the light emitting layer deteriorates, only the light emitting layer may be replaced (for example, cartridge, extraction / reinjection by circulation).
The liquid light-emitting layer exhibiting white light emission according to the present invention is characterized in that the carrier transport material and / or the light-emitting material is a liquid, and the other functional material with respect to one liquid functional material. Are constantly dissolved or dispersed. Therefore, a precise molecular design and synthesis process of a functional polymer such as incorporating a plurality of functional sites, and a technique for dispersing functional materials in a solid thin film are not so necessary.
In particular, when a plurality of types of light emitters such as white illumination are introduced, it can be said that productivity is high in that a more complicated molecular design and a device structure are not required.
And since the element of this invention uses the liquid light emitting layer, while being able to produce the uniform and single-layer light emitting layer in a large area, peeling of an electrode and a light emitting layer interface can be avoided.
Furthermore, it is possible to manufacture a display element having higher flexibility than an organic EL element made of an existing solid organic thin film.

It is a schematic sectional drawing which shows the organic EL element which concerns on the 1st Embodiment of this invention. 2 is a ¹ H-NMR spectrum of EH ₄ DPA obtained in Synthesis Example 1. FIG. FIG. 3 is a diagram showing current-voltage-external quantum efficiency (EQE) of the organic EL device produced in Example 1. 2 is an electroluminescence spectrum diagram of an organic EL device produced in Example 1. FIG.

Hereinafter, the present invention will be described in more detail.
The organic electric field white light emitting device according to the present invention includes an anode, a cathode, and a light emitting layer that emits white light and is liquid at room temperature and is interposed between these electrodes.
Here, the normal temperature means a range of 20 ° C. ± 15 ° C. (5 to 35 ° C.) defined by JIS Z 8703.

The liquid light-emitting layer may be any liquid-emitting layer as long as it exhibits liquid properties, and at least one of the carrier transport material and the light-emitting material, which are constituent materials of the light-emitting layer, is a liquid, and the composition that constitutes the light-emitting layer A liquid thing can be used as the whole thing.
Depending on the substance, both functions of carrier transport ability and light emission ability cannot be clearly separated. For example, some carbon condensed ring dyes such as carbazole, triarylamine and pyrene have both functions. Exists.
Moreover, as a material required for white light emission, the carrier transport material and / or light emitting material which emit visible light of all the wavelengths are desirable, and it is not limited to the light emitting material which emits white light.
In the present invention, as long as the entire light emitting layer exhibits liquid properties, a substance having both of these functions can be used, and it is a material that has both functions of carrier transporting ability and light emitting ability and emits white light. If present, it can be used alone.

As described above, the light-emitting layer of the present invention is not particularly limited as long as it emits white light as a whole, but in the present invention, a material having a carrier transporting ability and a light-emitting ability of liquid at room temperature. And a light emitting layer that emits white light as a whole, or a carrier transport material that is liquid at room temperature and a light emitting material, and a light emitting layer that emits white light as a whole. It is preferable that the material having both functions or the carrier transporting material is liquid at room temperature.
In this case, the light emitting material may be liquid at room temperature.

In order to emit white light as a whole of the light emitting layer, (1) a method using a light emitting material that emits white light alone, (2) a method using two types of materials having complementary colors, and (3) each color of red, green, and blue Although a method using a material exhibiting the above light emission is known, the method (2) or (3) is preferable in the present invention.
The complementary color relationship is, for example, a color relationship between two wavelengths with a pure white point in the CIE chromaticity coordinates as a target point, and representative examples include combinations of pure blue and yellow, light blue and red, and the like. .

In the present invention, when two types of materials having a complementary color relationship are used, (A) a light emitting material containing two types of light emitting materials having a complementary color relationship and emitting white light as a whole, (B) carrier transport Either a material having a function and a light emitting ability and a material having a complementary color relationship as a light emitting material, and a method of emitting white light as a whole may be adopted.
In addition, when a material that emits red, green, and blue light is used, (C) a method that emits white light as a whole using a material that includes red, green, and blue light emission as a light-emitting material. D) As a material having a carrier transporting ability and a light emitting ability, a material containing at least a material emitting light in any one color of red, green and blue is used, and as a light emitting material, at least any one color of red, green and blue is used. A material containing a material that emits light is used, and a material that emits light of three colors of red, green, and blue is adopted as the whole of these materials, and either of the methods of emitting white light as a whole may be adopted.

The red light emitting material can be appropriately selected from conventionally known materials, such as pyran compounds, tetracene compounds, naphthacene compounds, styryl compounds, europium complexes, iridium complexes, osmium complexes, ruthenium complexes, etc. These may be used alone or in combination of two or more.

As a specific example of the red light emitting material,
4- (Dicyanomethylene) -2-methyl-6-julolidyl-9-enyl-4H-pyran (4- (Dicyanomethylene) -2-methyl-6-julolidyl-9-enyl-4H-pyran)
4- (Dicyanomethylene) -2-methyl-6- (1,1,7,7-tetramethyljulolidyl-9-enyl) -4H-pyran (4- (Dicyanomethylene) -2-methyl-6- ( 1,1,7,7-tetramethyljulolidyl-9-enyl) -4H-pyran)
4- (Dicyanomethylene) -2-tert-butyl-6- (1,1,7,7-tetramethyljulolidin-4-yl-vinyl) -4H-pyran (4- (Dicyanomethylene) -2-tert- butyl-6- (1,1,7,7-tetramethyljulolidin-4-yl-vinyl) -4H-pyran),
Tris (dibenzoylmethane) phenanthroline europium (III),
(5,6,11,12) -tetraphenylnaphthacene ((5,6,11,12) -Tetraphenylnaphthacene),
Bis (2-benzo [b] thiophen-2-yl-pyridine) (acetylacetonato) iridium (III) (Bis (2-benzo [b] thiophen-2-yl-pyridine) (acetylacetonate) iridium (III))
Bis [1- (9,9-dimethyl-9H-fluoren-2-yl) isoquinoline] (acetylacetonato) iridium (III) (Bis [1- (9,9-dimethyl-9H-fluoren-2-yl) -isoquinoline] (acetylacetonate) iridium (III))
Bis [2- (9,9-dimethyl-9H-fluoren-2-yl) quinoline] (acetylacetonato) iridium (III) (Bis [2- (9,9-dimethyl-9H-fluoren-2-yl) quinoline] (acetylacetonate) iridium (III))
Tris (2-phenylquinoline) iridium (III)
2,8-Di-tert-butyl-5,11-bis (4-tert-butylphenyl) -6,12-diphenyltetracene (2,8-Di-tert-butyl-5,11-bis (4-tert -butylphenyl) -6,12-diphenyltetracene)
Bis (2-phenylbenzothiazolato) (acetylacetonate) iridium (III))
2,6-bis (4- (dip-tolylamino) styryl) naphthalene-1,5-dicarbonitrile (2,6-bis (4- (dip-tolylamino) styryl) naphthalene-1,5-dicarbonitrile)
Osmium (II) bis (3-trifluoromethyl-5- (2-pyridyl) -pyrazolate) dimethylphenylphosphine (3-trifluoromethyl-5- (2-pyridyl) -pyrazolate) dimethylphenylphosphine
Osmium (II) bis (3-trifluoromethyl) -5- (4-tert-butylpyridyl) -1,2,4-triazolate) diphenylmethylphosphine (Osmium (II) bis (3- (trifluoromethyl) -5- (4-tert-butylpyridyl) -1,2,4-triazolate) diphenylmethylphosphine)
Osmium (II) bis (3-trifluoromethyl) -5- (2-pyridyl) -1,2,4-triazole) dimethylphenylphosphine (Osmium (II) bis (3- (trifluoromethyl) -5- (2- pyridyl) -1,2,4-triazole) dimethylphenylphosphine)
Osmium (II) bis (3- (trifluoromethyl) -5- (4-tert-butylpyridyl) -1,2,4-triazolate) dimethylphenylphosphine (Osmium (II) bis (3- (trifluoromethyl) -5 -(4-tert-butylpyridyl) -1,2,4-triazolate) dimethylphenylphosphine)
Bis [2- (4-n-hexylphenyl) quinoline] (acetylacetonato) iridium (III) (Bis [2- (4-n-hexylphenyl) quinoline] (acetylacetonate) iridium (III))
Tris [2- (4-n-hexylphenyl) quinoline] iridium (III) (Tris [2- (4-n-hexylphenyl) quinoline] iridium (III))
Tris [2-phenyl-4-methylquinoline] iridium (III)
Bis (2-phenylquinoline) (2- (3-methylphenyl) pyridinate) iridium (III)
Bis (2- (9,9-dimethyl-fluoren-2-yl) -1-phenyl-1H-benzo [d] imidazolate) (acetylacetonato) iridium (III) (Bis (2- (9,9- diethyl-fluoren-2-yl) -1-phenyl-1H-benzo [d] imidazolato) (actylacetonate) iridium (III))
Bis (2-phenylpyridine) (3- (pyridin-2-yl) -2H-chromen-2-onate) iridium (III) (Bis (2-phenylpyridine) (3- (pyridin-2-yl) -2H- chromen-2-onate) iridium (III))
Bis (2-phenylquinoline) (2,2,6,6-tetramethylheptane-3,5-dionate) iridium (III) (Bis (2-phenylquinoline) (2,2,6,6-tetramethylheptane-3, 5-dionate) iridium (III))
Bis (phenylisoquinoline) (2,2,6,6-tetramethylheptane-3,5-dionate) Iridium (III) (Bis (phenylisoquinoline) (2,2,6,6-tetramethylheptane-3,5-dionate) iridium (III))
Iridium (III) bis (4-phenylthieno [3,2-c] pyridinate-N, C2 ') acetylacetonate (Iridium (III) bis (4-phenylthieno [3,2-c] pyridinato-N, C2' ) acetylacetonate)
(E) -2- (2-tert-butyl-6- (2- (2,6,6-trimethyl-2,4,5,6-tetrahydro-1H-pyrrolo [3,2,1-ij] quinoline) -8-yl) vinyl) -4H-pyran-4-ylidene) malononitrile ((E) -2- (2-tert-butyl-6- (2- (2,6,6-trimethyl-2,4,5) , 6-tetrahydro-1H-pyrrolo [3,2,1-ij] quinolin-8-yl) vinyl) -4H-pyran-4-ylidene) malononitrile)
Bis (2-phenylquinoline) (acetylacetonate) iridium (III) (Bis (2-phenylquinoline) (acetylacetonate) iridium (III))
Tris [4,4′-di-tert-butyl- (2,2 ′)-bipyridine] ruthenium (III) complex (Tris [4,4′-di-tert-butyl- (2,2 ′)-bipyridine] ruthenium (III) complex)
(E) -2- (2- (4- (dimethylamino) styryl) -6-methyl-4H-pyran-4-ylidene) malononitrile ((E) -2- (2- (4- (dimethylamino) styryl) -6-methyl-4H-pyran-4-ylidene) malononitrile)
Etc.

The green light emitting material can be appropriately selected from conventionally known materials, and examples thereof include a coumarin compound, a quinacridone compound, an anthracene compound, an iridium complex, a zinc complex, and the like. May also be used in combination of two or more.

As a specific example of the green light emitting material,
3- (2-Benzimidazolyl) -7- (diethylamino) coumarin (coumarin 7) (3- (2-Benzimidazolyl) -7- (diethylamino) coumarin)
3- (2-Benzothiazolyl) -7- (diethylamino) coumarin (3- (2-Benzothiazolyl) -7- (diethylamino) coumarin)
2,3,6,7-tetrahydro-1,1,7,7-tetramethyl-1H, 5H, 11H-10- (2-benzothiazolyl) quinolidino [9,9a, 1gh] coumarin (2,3,6, 7-Tetrahydro-1,1,7,7, -tetramethyl-1H, 5H, 11H-10- (2-benzothiazolyl) quinolizino [9,9a, 1gh] coumarin)
N, N'-Dimethyl-quinacridone
Tris (2-phenylpyridine) iridium (III)
Bis (2-phenylpyridine) (acetylacetonate) iridium (III) (Bis (2-phenylpyridine) (acetylacetonate) iridium (III))
Tris [2- (p-tolyl) pyridine] iridium (III) (Tris [2- (p-tolyl) pyridine] iridium (III))
9,10-bis [N, N-di- (p-tolyl) amino] anthracene (9,10-Bis [N, N-di- (p-tolyl) amino] anthracene)
9,10-bis [phenyl (m-tolyl) amino] anthracene (9,10-Bis [phenyl (m-tolyl) amino] anthracene)
Bis [2- (2-hydroxyphenyl) benzothiazolate] zinc (II) (Bis [2-(-2hydroxyphenyl) benzothiazolato] zinc (II))
N ¹⁰ , N ¹⁰ , N ^{10 ′} , N ^{10 ′} -tetratolyl-9,9′-bianthracene-10,10′-diamine (N ¹⁰ , N ¹⁰ , N ^{10 ′} , N ^{10 ′} -tetratolyl-9,9 '-bianthracene-10,10'-diamine)
^{^{^{N 10, N 10, N 10}}} ', N 10' - tetraphenyl-9,9'-bi anthracene -10,10'- diamine ^{^{(N 10, N 10, N}} 10 ', N 10' -tetraphenyl-9, 9'-bianthracene-10,10'-diamine)
Etc.

The blue light-emitting material can be appropriately selected from conventionally known materials, and examples thereof include diphenylanthracene compounds, perylene compounds, carbazole compounds, styryl compounds, fluorene compounds, iridium complexes, and the like. These may be used alone or in combination of two or more.

As a specific example of the blue light emitting material,
4,4'-bis (9-ethyl-3-carbazovinylene) -1,1'-biphenyl (4,4'-Bis (9-ethyl-3-carbazovinylene) -1,1'-biphenyl)
Perylene
2,5,8,11-Tetra-tert-butylperylene (2,5,8,11-Tetra-tert-butylperylene)
1,4-Bis [2- (3-N-ethylcarbazoryl) vinyl] benzene
4,4'-bis [4- (di-p-tolylamino) styryl] biphenyl (4,4'-Bis [4- (di-p-tolylamino) styryl] biphenyl)
4- (Di-p-tolylamino) -4 '-[(di-p-tolylamino) styryl] stilbene (4- (Di-p-tolylamino) -4'-[(di-p-tolylamino) styryl] stilbene)
Bis (3,5-difluoro-2- (2-pyridyl) phenyl- (2-carboxypyridyl) iridium (III) (Bis (3,5-difluoro-2- (2-pyridyl) phenyl- (2-carboxypyridyl) iridium (III))
4,4'-bis [4- (diphenylamino) styryl] biphenyl (4,4'-Bis [4- (diphenylamino) styryl] biphenyl)
Bis (2,4-difluorophenylpyridinate) tetrakis (1-pyrazolyl) borateiridium (III) (Bis (2,4-difluorophenylpyridinato) tetrakis (1-pyrazolyl) borate iridium (III))
N, N'-bis (naphthalen-2-yl) -N, N'-bis (phenyl) -tris- (9,9-dimethylfluorenylene) (N, N'-Bis (naphthalen-2-yl) -N, N'-bis (phenyl) -tris- (9,9-dimethylfluorenylene))
2,7-bis {2- [phenyl (m-tolyl) amino] -9,9-dimethyl-fluoren-7-yl} -9,9-dimethyl-fluorene (2,7-Bis {2- [phenyl ( m-tolyl) amino] -9,9-dimethyl-fluorene-7-yl} -9,9-dimethyl-fluorene)
N- (4-((E) -2- (6-((E) -4- (diphenylamino) styryl) naphthalen-2-yl) vinyl) phenyl) -N-phenylbenzenamine (N- (4- ((E) -2- (6-((E) -4- (diphenylamino) styryl) naphthalen-2-yl) vinyl) phenyl) -N-phenylbenzenamine)
fac-iridium (III) Tris (1-phenyl-3-methylbenzimidazolin-2-ylidene-C, C2 ′) (fac-Iridium (III) Tris (1-phenyl-3-methylbenzimidazolin-2-ylidene-C, C2 '))
mer-Iridium (III) Tris (1-phenyl-3-methylbenzimidazolin-2-ylidene-C, mer-Iridium (III) Tris (1-phenyl-3-methylbenzimidazolin-2-ylidene-C, C2 '))
1,4-di- [4- (N, N-di-phenyl) amino] styryl-benzene (1,4-di- [4- (N, N-di-phenyl) amino] styryl-benzene)
1,4-bis (4- (9H-carbazol-9-yl) styryl) benzene
(E) -6- (4- (diphenylamino) styryl) -N, N-diphenylnaphthalen-2-amine ((E) -6- (4- (diphenylamino) styryl) -N, N-diphenylnaphthalen-2- amine)
Bis (2,4-difluorophenylpyridinate) (5- (pyridin-2-yl) -1H-tetrazolate) iridium (III) (Bis (2,4-difluorophenylpyridinato) (5- (pyridin-2-yl) -1H-tetrazolate) iridium (III))
Etc.

In addition, a light emitting material that emits white light alone can be appropriately selected from conventionally known materials. For example, the following chemical structure described in the literature (Adv. Mater., 16, 1358 (2004)) can be used. And a light emitting material having the formula.
In addition, a white luminescent material may be used independently or may be used in combination of 2 or more types.

Further, the light emitting material is not limited to a low molecular weight material, and a high molecular light emitting material may be used. For example, a polyvinyl carbazole derivative, a polyfluorene derivative, a polyphenylene vinylene derivative, a polythiophene derivative, or the like may be used.

In the present invention, the compound represented by the formula (1) can be suitably used as the liquid carrier transporting material and the light emitting material or carrier transporting material.

Here, X is a charge transport part, and is a carbazole derivative, a thianthrene derivative, a phenothiazine derivative, an azepine derivative, a triazole derivative, an imidazole derivative, an oxadiazole derivative, an arylcycloalkane derivative, a triarylamine derivative, a phenylenediamine derivative, Stilbene derivatives, oxazole derivatives, triphenylmethane derivatives, pyrazoline derivatives, fluorenone derivatives, polyaniline derivatives, silane derivatives, pyrrole derivatives, fluorene derivatives, porphyrin derivatives, quinacridone derivatives, triphenylphosphine oxide derivatives, anthracene derivatives, tetracene derivatives, pyrene derivatives, Carbon condensed ring dyes such as rubrene derivatives, decacyclene derivatives, perylene derivatives, metal or metal-free phthalocyanines, gold Or representing metal-free naphthalocyanine, benzidine.
Among these, carbazole derivatives and pyrene derivatives are preferable from the viewpoint of excellent hole transport performance.

On the other hand, Y is at least one substituent linked to the charge transport part X, and may contain an ether bond, a thioether bond, an ester bond, a carbonate bond or an amide bond. Represents a group. These ether bonds, thioether bonds, ester bonds, carbonate ester bonds, and amide bonds may be present at the connecting portion between X and Y.
In this case, the alkyl group may be linear, branched, or cyclic. However, when a linear alkyl group is used, the crystallinity is improved and the viscosity is increased by intermolecular interaction such as packing of alkyl chains. Since an increase is considered, a branched alkyl group is more preferable.
Specific examples of such an alkyl group having 1 to 30 carbon atoms include methyl, ethyl, n-propyl, i-propyl, c-propyl, n-butyl, i-butyl, s-butyl, t-butyl, c -Butyl, n-pentyl, 1-methyl-n-butyl, 2-methyl-n-butyl, 3-methyl-n-butyl, 1,1-dimethyl-n-propyl, c-pentyl, 2-methyl-c -Butyl, n-hexyl, 1-methyl-n-pentyl, 2-methyl-n-pentyl, 1,1-dimethyl-n-butyl, 1-ethyl-n-butyl, 1,1,2-trimethyl-n -Propyl, c-hexyl, 1-methyl-c-pentyl, 1-ethyl-c-butyl, 1,2-dimethyl-c-butyl, n-heptyl, n-octyl, 2-ethylhexyl, n-nonyl, n -Decyl, n-undecyl n- dodecyl, n- tridecyl, n- tetradecyl, n- pentadecyl, n- hexadecyl, n- heptadecyl, n- octadecyl, n- nonadecyl, n- eicosyl group.

The alkyl group having 1 to 30 carbon atoms containing an ether bond, a thioether bond, an ester bond, a carbonate ester bond or an amide bond includes those having these bonds at any position of the alkyl group as described above. Specific examples include the following substituents.

Specific examples of the alkyl group containing an ether bond include CH ₂ OCH ₃ , CH ₂ OCH ₂ CH ₃ , CH ₂ O (CH ₂ ) ₂ CH ₃ , CH ₂ OCH (CH ₃ ) ₂ , and CH ₂ O. (CH ₂ ) ₃ CH ₃ , CH ₂ OCH ₂ CH (CH ₃ ) ₂ , CH ₂ OC (CH ₃ ) ₃ , CH ₂ O (CH ₂ ) ₄ CH ₃ , CH ₂ OCH (CH ₃ ) (CH ₂ ) ₂ CH ₃ , CH ₂ O (CH ₂ ) ₂ CH (CH ₃ ) CH ₃ , CH ₂ OCH (CH ₃ ) (CH ₂ ) ₃ CH ₃ , CH ₂ O (CH ₂ ) ₅ CH ₃ , CH ₂ OCH ₂ _{_{CH (CH 3) (CH 2}} ) 2 CH 3, CH 2 O (CH 2) 2 CH (CH 3) CH 2 CH 3, CH 2 O (CH 2) 3 CH (CH 3) CH 3, CH 2 OC _{_{_{(CH 3) 2 (CH 2}}} ) 2 CH 3, CH 2 OCH (CH 2 CH 3) (CH 2) 2 CH 3, CH 2 OC (CH 3) 2 C _{_{(CH 3) CH 3, CH}} 2 O (CH 2) 6 CH 3, CH 2 O (CH 2) 7 CH 3, CH 2 OCH 2 CH (CH 2 CH 3) (CH 2) 3 CH 3, CH 2 O (CH ₂ ) ₈ CH ₃ , CH ₂ O (CH ₂ ) ₉ CH ₃ , CH ₂ O (CH ₂ ) ₁₀ CH ₃ , CH ₂ O (CH ₂ ) ₁₁ CH ₃ , CH ₂ O (CH ₂ ) ₁₂ CH ₃ , CH ₂ O (CH ₂ ) ₁₃ CH ₃ , CH ₂ O (CH ₂ ) ₁₄ CH ₃ , CH ₂ O (CH ₂ ) ₁₅ CH ₃ , CH ₂ O (CH ₂ ) ₁₆ CH ₃ , CH ₂ O (CH ₂ ) ₁₇ CH ₃ , CH ₂ O (CH ₂ ) ₁₈ CH ₃ , CH ₂ O (CH ₂ ) ₁₉ CH ₃ , CH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ OCH ₂ CH ₃ , CH ₂ CH ₂ _{_{_{O (CH 2) 2 CH 3}}} , CH 2 CH 2 OCH (CH 3) 2, CH 2 CH 2 O (CH 2) 3 CH 3, CH 2 CH 2 OCH 2 CH (CH 3) 2, CH 2 _{_{_{H 2 OC (CH 3) 3}}} , CH 2 CH 2 O (CH 2) 4 CH 3, CH 2 CH 2 OCH (CH 3) (CH 2) 2 CH 3, CH 2 CH 2 O (CH 2) 2 CH _{_{(CH 3) CH 3, CH}} 2 CH 2 OCH (CH 3) (CH 2) 3 CH 3, CH 2 CH 2 O (CH 2) 5 CH 3, CH 2 CH 2 OCH 2 CH (CH 3) (CH _{_{_{_{2) 2 CH 3, CH 2}}}} CH 2 O (CH 2) 2 CH (CH 3) CH 2 CH 3, CH 2 CH 2 O (CH 2) 3 CH (CH 3) CH 3, CH 2 CH 2 OC ( _{_{_{CH 3) 2 (CH 2)}}} 2 CH 3, CH 2 CH 2 OCH (CH 2 CH 3) (CH 2) 2 CH 3, CH 2 CH 2 OC (CH 3) 2 CH (CH 3) CH 3, CH _{_{_{2 CH 2 O (CH 2)}}} 6 CH 3, CH 2 CH 2 O (CH 2) 7 CH 3, CH 2 CH 2 OCH 2 CH (CH 2 CH 3) (CH 2) 3 C _{_{_{3, CH 2 CH 2 O (}}} CH 2) 8 CH 3, CH 2 CH 2 O (CH 2) 9 CH 3, CH 2 CH 2 O (CH 2) 10 CH 3, CH 2 CH 2 O (CH 2) ₁₁ CH ₃ , CH ₂ CH ₂ O (CH ₂ ) ₁₂ CH ₃ , CH ₂ CH ₂ O (CH ₂ ) ₁₃ CH ₃ , CH ₂ CH ₂ O (CH ₂ ) ₁₄ CH ₃ , CH ₂ CH ₂ O (CH ₂₎ ₁₅ CH _3,
_{_{_{CH 2 CH 2 O (CH 2}}} ) 16 CH 3, CH 2 CH 2 O (CH 2) 17 CH 3, CH 2 CH 2 O (CH 2) 18 CH 3, CH 2 CH 2 O (CH 2) 19 CH ₃ , CH ₂ CH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ CH ₂ OCH ₂ CH ₃ , CH ₂ CH ₂ CH ₂ O (CH ₂ ) ₂ CH ₃ , CH ₂ CH ₂ CH ₂ OCH (CH ₃ ) ₂ , _{_{_{CH 2 CH 2 CH 2 O (}}} CH 2) 3 CH 3, CH 2 CH 2 CH 2 OCH 2 CH (CH 3) 2, CH 2 CH 2 CH 2 OC (CH 3) 3, CH 2 CH 2 CH 2 O (CH ₂ ) ₄ CH ₃ , CH ₂ CH ₂ CH ₂ OCH (CH ₃ ) (CH ₂ ) ₂ CH ₃ , CH ₂ CH ₂ CH ₂ O (CH ₂ ) ₂ CH (CH ₃ ) CH ₃ , CH ₂ CH ₂ CH ₂ OCH (CH ₃ ) (CH ₂ ) ₃ CH ₃ ,
_{_{_{CH 2 CH 2 CH 2 O (}}} CH 2) 5 CH 3, CH 2 CH 2 CH 2 OCH 2 CH (CH 3) (CH 2) 2 CH 3, CH 2 CH 2 CH 2 O (CH 2) 2 CH ( _{_{_{CH 3) CH 2 CH 3,}}} CH 2 CH 2 CH 2 O (CH 2) 3 CH (CH 3) CH 3, CH 2 CH 2 CH 2 OC (CH 3) 2 (CH 2) 2 CH 3, CH 2 _{_{_{CH 2 CH 2 OCH (CH 2}}} CH 3) (CH 2) 2 CH 3, CH 2 CH 2 CH 2 OC (CH 3) 2 CH (CH 3) CH 3, CH 2 CH 2 CH 2 O (CH 2) ₆ CH ₃ , CH ₂ CH ₂ CH ₂ O (CH ₂ ) ₇ CH ₃ , CH ₂ CH ₂ CH ₂ OCH ₂ CH (CH ₂ CH ₃ ) (CH ₂ ) ₃ CH ₃ , CH ₂ CH ₂ CH ₂ O ( CH ₂ ) ₈ CH ₃ , CH ₂ CH ₂ CH ₂ O (CH ₂ ) ₉ CH ₃ , CH ₂ CH ₂ CH ₂ O (CH ₂ ) ₁₀ CH ₃ , CH ₂ CH ₂ CH ₂ O (CH ₂ ) ₁₁ CH ₃
_{_{_{, CH 2 CH 2 CH 2 O}}} (CH 2) 12 CH 3, CH 2 CH 2 CH 2 O (CH 2) 13 CH 3, CH 2 CH 2 CH 2 O (CH 2) 14 CH 3, CH 2 CH 2 CH ₂ O (CH ₂ ) ₁₅ CH ₃ , CH ₂ CH ₂ CH ₂ O (CH ₂ ) ₁₆ CH ₃ , CH ₂ CH ₂ CH ₂ O (CH ₂ ) ₁₇ CH ₃ , CH ₂ CH ₂ CH ₂ O (CH ₂ ) ₁₈ CH ₃ , CH ₂ CH ₂ CH ₂ O (CH ₂ ) ₁₉ CH ₃ , CH ₂ CH ₂ OCH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ CH ₂ O CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH _{_₂} CH ₂ OCH ₂ C _{_{_{_{2 CH 2 CH 2 OCH 3,}}}} CH 2 CH 2 CH 2 CH 2 OCH 2 CH 2 CH 2 CH 2 OCH 2 CH 2 CH 2 CH 2 OCH 2 CH 2 CH 2 CH 2 OCH 2 CH 2 CH 2 CH 2 OCH 2 CH ₂ CH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₃ , CH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₃ , CH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₃ , CH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₃ , CH ₂ CH ₂ OCH ₂ CH _₂ OCH ₂ _{_{_{_{H 2 OCH 2 CH 2 OCH 2}}}} CH 2 OCH 2 CH 2 OCH 2 CH 3, CH 2 CH 2 OCH 2 CH 2 OCH 2 CH 2 OCH 2 CH 2 OCH 2 CH 2 OCH 2 CH 2 OCH 2 CH 2 OCH 2 CH ₃ , CH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₃ groups, groups represented by the following formula, etc. Can be mentioned.

Specific examples of the alkyl group containing a thioether bond include a group in which the oxygen atom (O) of the alkyl group containing the ether bond is replaced with a sulfur atom (S).
Specific examples of the alkyl group containing an ester bond include groups in which the oxygen atom (O) of the alkyl group containing an ether bond is replaced with C (O) O or OC (O). .
Specific examples of the alkyl group containing a carbonate bond include a group in which the oxygen atom (O) of the alkyl group containing an ether bond is replaced with OC (O) O.
Examples of the alkyl group having 1 to 30 carbon atoms containing an amide bond include a group in which the oxygen atom (O) of the alkyl group containing an ether bond is replaced with C (O) NH or NHC (O). Can be mentioned.

Among these, a substituent having 6 to 30 carbon atoms is preferable from the viewpoint of easily becoming a liquid. Specifically, c-hexyl, 1-methyl-c-pentyl, 1-ethyl-c-butyl, 1, 2-dimethyl-c-butyl, n-heptyl, n-octyl, 2-ethylhexyl, n-nonyl, n-decyl, n-undecyl, n-dodecyl, n-tridecyl, n-tetradecyl, n-pentadecyl, n- Hexadecyl, n-heptadecyl, n-octadecyl, n-nonadecyl, n-eicosyl, CH ₂ O (CH ₂ ) ₅ CH ₃ , CH ₂ OCH (CH ₃ ) (CH ₂ ) ₃ CH ₃ , CH ₂ OCH ₂ CH ( _{_{_{CH 3) (CH 2) 2}}} CH 3, CH 2 O (CH 2) 2 CH (CH 3) CH 2 CH 3, CH 2 O (CH 2) 3 CH (CH 3) CH 3, CH 2 OC (CH ₃₎ _{_₂} (CH _{2) 2} _{_{H 3, CH 2 OCH (CH}} 2 CH 3) (CH 2) 2 CH 3, CH 2 OC (CH 3) 2 CH (CH 3) CH 3, CH 2 O (CH 2) 6 CH 3, CH 2 O (CH ₂ ) ₇ CH ₃ , CH ₂ OCH ₂ CH (CH ₂ CH ₃ ) (CH ₂ ) ₃ CH ₃ , CH ₂ O (CH ₂ ) ₈ CH ₃ , CH ₂ O (CH ₂ ) ₉ CH ₃ , CH ₂ O (CH ₂ ) ₁₀ CH ₃ , CH ₂ O (CH ₂ ) ₁₁ CH ₃ , CH ₂ O (CH ₂ ) ₁₂ CH ₃ , CH ₂ O (CH ₂ ) ₁₃ CH ₃ , CH ₂ O (CH ₂ ) ₁₄ CH ₃ , CH ₂ O (CH ₂ ) ₁₅ CH ₃ , CH ₂ O (CH ₂ ) ₁₆ CH ₃ , CH ₂ O (CH ₂ ) ₁₇ CH ₃ , CH ₂ O (CH ₂ ) ₁₈ CH ₃ , CH ₂ _{_{_{O (CH 2) 19 CH 3}}} , CH 2 CH 2 O (CH 2) 5 CH 3, CH 2 CH 2 OCH (CH 3) (CH 2) 3 CH 3, CH 2 CH 2 OCH 2 CH (CH 3 _{_{_{(CH 2) 2 CH 3,}}} CH 2 CH 2 O (CH 2) 2 CH (CH 3) CH 2 CH 3, CH 2 CH 2 O (CH 2) 3 CH (CH 3) CH 3, CH 2 CH 2 OC (CH ₃ ) ₂ (CH ₂ ) ₂ CH ₃ , CH ₂ CH ₂ OCH (CH ₂ CH ₃ ) (CH ₂ ) ₂ CH ₃ , CH ₂ CH ₂ OC (CH ₃ ) ₂ CH (CH ₃ ) CH ₃ _{_{, CH 2 CH 2 O (CH}} 2) 6 CH 3, CH 2 CH 2 O (CH 2) 7 CH 3, CH 2 CH 2 OCH 2 CH (CH 2 CH 3) (CH 2) 3 CH 3, CH 2 CH ₂ O (CH ₂ ) ₈ CH ₃ , CH ₂ CH ₂ O (CH ₂ ) ₉ CH ₃ , CH ₂ CH ₂ O (CH ₂ ) ₁₀ CH ₃ , CH ₂ CH ₂ O (CH ₂ ) ₁₁ CH ₃ , _{_{_{CH 2 CH 2 O (CH 2}}} ) 12 CH 3, CH 2 CH 2 O (CH 2) 13 CH 3, CH 2 CH 2 O (CH 2) 14 CH 3, CH 2 CH 2 O (CH 2 ₁₅ CH ₃ , CH ₂ CH ₂ O (CH ₂ ) ₁₆ CH ₃ , CH ₂ CH ₂ O (CH ₂ ) ₁₇ CH ₃ , CH ₂ CH ₂ O (CH ₂ ) ₁₈ CH ₃ , CH ₂ CH ₂ O ( _{_{_{CH 2) 19 CH 3, CH}}} 2 CH 2 CH 2 O (CH 2) 5 CH 3, CH 2 CH 2 CH 2 OCH (CH 3) (CH 2) 3 CH 3, CH 2 CH 2 CH 2 OCH 2 CH _{_{(CH 3) (CH 2)}} 2 CH 3, CH 2 CH 2 CH 2 O (CH 2) 2 CH (CH 3) CH 2 CH 3, CH 2 CH 2 CH 2 O (CH 2) 3 CH (CH 3 _{_{_{) CH 3, CH 2 CH 2}}} CH 2 OC (CH 3) 2 (CH 2) 2 CH 3, CH 2 CH 2 CH 2 OCH (CH 2 CH 3) (CH 2) 2 CH 3, CH 2 CH 2 CH _{_{_{2 OC (CH 3) 2 CH}}} (CH 3) CH 3, CH 2 CH 2 CH 2 O (CH 2) 6 CH 3, CH 2 CH 2 CH 2 O (CH 2) 7 CH 3 _{_{_{, CH 2 CH 2 CH 2 OCH}}} 2 CH (CH 2 CH 3) (CH 2) 3 CH 3, CH 2 CH 2 CH 2 O (CH 2) 8 CH 3, CH 2 CH 2 CH 2 O (CH 2) ₉ CH ₃ , CH ₂ CH ₂ CH ₂ O (CH ₂ ) ₁₀ CH ₃ , CH ₂ CH ₂ CH ₂ O (CH ₂ ) ₁₁ CH ₃ , CH ₂ CH ₂ CH ₂ O (CH ₂ ) ₁₂ CH ₃ , CH ₂ CH ₂ CH ₂ O (CH ₂ ) ₁₃ CH ₃ , CH ₂ CH ₂ CH ₂ O (CH ₂ ) ₁₄ CH ₃ , CH ₂ CH ₂ CH ₂ O (CH ₂ ) ₁₅ CH ₃ ,
_{_{_{CH 2 CH 2 CH 2 O (}}} CH 2) 16 CH 3, CH 2 CH 2 CH 2 O (CH 2) 17 CH 3, CH 2 CH 2 CH 2 O (CH 2) 18 CH 3, CH 2 CH 2 CH ₂ O (CH ₂ ) ₁₉ CH ₃ , CH ₂ CH ₂ OCH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ C H ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₃ , CH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₃ , CH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₃ , CH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₃ , CH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₃ , CH ₂ CH ₂ OCH _{_{_{_{2 CH 2 OCH 2 CH 2 OCH}}}} 2 CH 2 OCH 2 CH 2 OCH 2 CH 2 OCH 2 CH 2 OCH 2 CH 3, CH 2 CH 2 OCH 2 CH 2 OCH 2 CH 2 OCH 2 CH 2 OCH 2 CH 2 OC _{_{_{_{2 CH 2 OCH 2 CH 2 OCH}}}} 2 CH 2 OCH 2 CH 3 group and the like, as well as a group oxygen atom (O), was replaced by a sulfur atom (S) of these groups, C (O) O or OC (O) A group substituted for, a group substituted for OC (O) O, a group substituted for C (O) NH or NHC (O), and the like are preferable.

Particularly, an alkyl group having 1 to 30 carbon atoms (oxyalkylene group) having an ether bond is more preferable, and CH ₂ CH ₂ OCH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₃ , CH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH ₂ OCH ₂ CH ₂ CH _₂ OCH ₂ C _{_{_{_{2 CH 2 OCH 2 CH 2 CH}}}} 2 OCH 2 CH 2 CH 2 OCH 3 group and the like.

Suitable carrier transporting materials include, for example, the following carbazole (X1), N, N-disubstituted or N, N, N-trisubstituted arylamine (X2).

In the above formulas, Y ¹ to Y ⁶ each independently represent a hydrogen atom or an alkyl group having 1 to 30 carbon atoms which may contain an ether bond, a thioether bond, an ester bond, a carbonate bond or an amide bond. (However, at least one of Y ¹ to Y ³ and at least one of Y ⁴ to Y ⁶ is the above alkyl group), A ¹ and A ² are a single bond or a substituted or unsubstituted aromatic ring Represents.
Here, the term “alkyl group” includes linear, branched, and cyclic alkyl such as methyl, ethyl, isopropyl, t-butyl, 2-ethylhexyl, and cyclohexyl, which has a melting point of the above general formula (1). Is equivalent to the functional group (Y) for lowering, and specific examples and preferred examples thereof are as described above.
Examples of the aromatic ring include a benzene ring and a naphthalene ring.

In the present invention, in order to prevent an increase in viscosity due to an increase in molecular weight, Y ¹ , Y ² , Y ⁴ and Y ⁵ are hydrogen atoms, and Y ³ and Y ⁶ are alkyl groups (oxyalkylene groups) having an ether bond. More preferably, A ¹ and A ² are preferably benzene rings or single bonds.
From these points, the following compound (X3) is preferable, the compound (3) is more preferable, the compound (4) or the compound (5) is still more preferable, and further, it has an alkyl group (oxyalkylene group) having an ether bond. Although a compound (5) is suitable, it is not limited to these.

(In the formula, Y ³ represents the same meaning as described above.)

Moreover, the compound shown below can also be used suitably.

(Wherein Y ⁴ to Y ¹¹ each independently represents a hydrogen atom or an alkyl group having 1 to 30 carbon atoms which may contain an ether bond, a thioether bond, an ester bond, a carbonate ester bond, an amide bond, etc.) However, at least one of Y ⁴ to Y ⁶ , at least one of Y ⁷ and Y ⁸ , and at least one of Y ⁹ to Y ¹¹ are the above alkyl groups.)

(In the formula, R ¹ to R ⁴ each independently represent an alkyl group having 1 to 30 carbon atoms.)

Also, the following pyrene derivative (Z1) can be preferably used.

In the above formulas, W ¹ to W ⁴ each independently represents a hydrogen atom or an alkyl group having 1 to 30 carbon atoms which may contain an ether bond, a thioether bond, an ester bond, a carbonate bond or an amide bond. (However, at least one of W ¹ to W ⁴ is the above alkyl group), A ¹ to A ⁴ represent a single bond or a substituted or unsubstituted aromatic ring. Here, specific examples of the alkyl group include those similar to the above Y, and specific examples of the aromatic ring include those similar to the above.

Also in this case, in order to prevent an increase in viscosity accompanying an increase in molecular weight, a compound in which A ¹ to A ⁴ are single bonds, that is, a compound (Z2) in which W ¹ to W ⁴ are directly bonded to a carbon condensed ring is preferable. Further, it is more preferable that at least one of W ¹ to W ⁴ is a hydrogen atom, and particularly, three is a hydrogen atom.
From these points, the following compound (Z3) is preferable, but is not limited thereto.

The carrier transport material described above may use a dimer in consideration of the light emission lifetime of the organic EL element.
As the dimer, the following compound (V1) is preferable, and the compound (12) having an alkyl group (oxyalkylene group) containing an ether bond is preferable, but the dimer is not limited thereto.

(In the formula, Y ³ represents the same meaning as described above.)

The blending ratio of the above-described carrier transporting material (material having carrier transporting ability and light emitting ability) and the light emitting material is not particularly limited as long as the entire composition is in a liquid and emits white light as a whole. In terms of mass ratio, carrier transport material (material having carrier transport ability and light emission ability): luminescent material = 99.99: 0.01 to 50:50 or so.
However, in the case of a carrier transporting material (material having carrier transporting ability and light emitting ability) and a light emitting material having a complementary color relationship, their blending ratio is a mass ratio, and the carrier transporting material (material having carrier transporting ability and light emitting ability). : Luminescent material = preferably about 99.99: 0.01 to 50:50.
For example, when two types of light emitting materials having a complementary color relationship are used, the blending ratio thereof is preferably about 99.99: 0.01 to 50:50 in terms of mass ratio, for example.
Further, when red, green, and blue materials are used, the mixing ratio thereof is, for example, when the red mixing ratio is 0.01 by mass ratio, and green: blue = 0.01: 99.98 to 99. When the blending ratio of green is 0.01, red: blue = 0.01: 99.98 to 99.98 to 0.01, and the blending ratio of blue is 0.01 In this case, it is preferable that red: green = 0.01: 99.98 to 99.98: 0.01.
As disclosed in Non-Patent Document 2, an organic salt or an inorganic salt may be added to the light emitting layer in order to improve device characteristics.

In the organic electroluminescent element of the present invention, since the above-described liquid light emitting layer is characterized, there are no particular limitations on the constituent members of the other elements, and conventionally known elements can be appropriately employed.
For example, as the anode material, a transparent electrode typified by indium tin oxide (ITO) or indium zinc oxide (IZO), a polythiophene derivative having high charge transportability, a polyaniline derivative, or the like can be used.
As the cathode material, aluminum, magnesium-silver alloy, aluminum-lithium alloy, lithium, sodium, potassium, cesium, cesium-added ITO, or the like can be used.

Moreover, the organic electroluminescent element of this invention may be equipped with the various functional layers generally used for an organic electroluminescent element other than an anode, a cathode, and a light emitting layer.
Examples of such a functional layer include a hole transport layer, a hole injection layer, an electron transport layer, an electron injection layer, a carrier block layer, and the like.

The hole transport layer is a layer that is provided between the anode and the light emitting layer and has a function of transporting holes injected from the anode to the light emitting layer. Examples of the material include (triphenylamine) dimer. Derivatives (TPD), (α-naphthyldiphenylamine) dimer (α-NPD), [(triphenylamine) dimer] spirodimer (Spiro-TAD) and other triarylamines, 4,4 ′, 4 ″ -tris [ Starburst amines such as 3-methylphenyl (phenyl) amino] triphenylamine (m-MTDATA), 4,4 ′, 4 ″ -tris [1-naphthyl (phenyl) amino] triphenylamine (1-TNATA) 5,5 ″ -bis- {4- [bis (4-methylphenyl) amino] phenyl} -2,2 ′: 5 ′, 2 ″ terthiophene (BMA-3T Oligothiophenes etc., polyvinyl carbazoles, and the like.
The hole injection layer is a layer that is provided between the hole transport layer and the anode and has a function of increasing the hole injection efficiency from the anode.
Examples of the material for forming the hole injection layer include copper phthalocyanine, 4,4 ′, 4 ″ -tris [3-methylphenyl (phenyl) amino] triphenylamine (m-MTDATA), and the like.

The electron transport layer is a layer provided between the cathode and the light-emitting layer and having a function of transporting electrons injected from the cathode to the light-emitting layer, and includes Alq ₃ , BAlq, DPVBi, (2- (4-biphenyl) -5- (4-t-butylphenyl) -1,3,4-oxadiazole) (PBD), triazole derivative (TAZ), bathocuproine (BCP), silole derivative and the like.
The electron injection layer is a layer that is provided between the electron transport layer and the cathode and has a function of increasing the efficiency of electron injection from the cathode.
As a material for forming such an electron injection layer, lithium oxide (Li ₂ O), magnesium oxide (MgO), alumina (Al ₂ O ₃ ), lithium fluoride (LiF), magnesium fluoride (MgF ₂ ), Examples thereof include strontium fluoride (SrF ₂ ), Li (acac), lithium acetate, and lithium benzoate.

The carrier block layer is a layer for controlling the light emitting region, and can be formed between any of the above-described layers.
Examples of the material for forming such a carrier block layer include PBD, TAZ, and BCP.

Next, an embodiment of the electroluminescent element of the present invention will be described with reference to the drawings.
FIG. 1 shows an organic EL element 1 which is an electroluminescent element according to an embodiment of the present invention.
The organic EL element 1 includes an anode 10, a cathode 20, and a light emitting layer 30 (hereinafter referred to as a liquid light emitting layer 30) that is interposed between the

electrodes

10 and 20 and is liquid at room temperature.
In the present embodiment, the anode 10 is composed of a glass substrate 11 and an ITO substrate 12 formed thereon.
On the other hand, the cathode 20 is composed of a glass substrate 13 and an ITO substrate 14 formed thereon.

The liquid light-emitting layer 30 includes a carrier transport material and red, green, and blue light-emitting materials. In this embodiment, the carbazole represented by the above formula (5) is used as the liquid carrier transport material. A derivative (TEGCz) is included.

Although there is no restriction | limiting in particular as a preparation method of the organic EL element comprised as mentioned above, For example, the following methods can be used.
First, a liquid luminescent material prepared by dissolving red, green, and blue luminescent materials in the liquid carrier transporting material is dropped onto the cathode 20, and the anode 10 is pressed on the cathode 20 with an appropriate pressure to form a liquid. The organic EL element 1 having the light emitting layer 30 is obtained.

In addition, the material which comprises each layer is not limited to the material used by the said embodiment, As long as the function of each layer is exhibited, it can select from the various materials illustrated previously suitably and can be used.
Further, the method for forming each layer is not limited to the method of the above embodiment, and a known method such as an evaporation method, a spray method, an ink jet method, or a sputtering method can be appropriately employed depending on the material to be used. .
Furthermore, a hole blocking layer, a hole injection layer, or the like may be formed as necessary.

EXAMPLES Hereinafter, although an Example and a comparative example are given and this invention is demonstrated more concretely, this invention is not limited to the following Example. In addition, the measuring apparatuses used in the examples are as follows.
(1) Current-Voltage-External Luminous Efficiency (EQE) Characteristics Measurement was performed with a semiconductor parameter analyzer with a photo detector (B1500A manufactured by Agilent) and an optical power meter (Newport, 1930C).
(2) EL emission spectrum Measured with a multichannel spectrometer (PMA-11, manufactured by Hamamatsu Photonics).
(3) ¹ H-NMR
Equipment: JNM-LA400, manufactured by JEOL Datum Co., Ltd.

[Synthesis Example 1] Synthesis of EH ₄ DPA

9,10-bis (3,5-dihydroxyphenyl) anthracene (1.0 g, 2.54 mmol), 1-bromo-2-ethylhexane (3.9 g, 20.3 mmol) and potassium carbonate (7.0 g, 50 0.7 mmol) was added to DMF (30 mL), and the mixture was stirred at 80 ° C. for 5 hours. After the solvent was distilled off under reduced pressure, chloroform (300 mL) was added and washed with water (150 mL × 3). Magnesium sulfate was added and dried, followed by purification by column chromatography (silica gel, n-hexane / ethyl acetate = 95/5 (v / v)) to obtain EH ₄ DPA (2.03 g) as a white powder. . Identification was performed by ¹ H-NMR spectrum. The NMR spectrum is shown in FIG.

[Example 1]
To host compound TEGCz 89.9 parts by mass represented by the following structure, 10.0 parts by mass of EH ₄ DPA (blue light-emitting material) prepared in Synthesis Example 1, and DCJTB (red light-emitting material, Luminescent Technology Co., Ltd.) represented by the following structure 0.05 parts by mass) and 0.05 parts by mass of Coumarin 7 (green luminescent material, manufactured by Aldrich) were added, and they were completely dissolved in TEGCz to produce a liquid light emitter.
TEGCz was synthesized with reference to the method described in Synthetic Metals, 89 (3), 171 (1997).

The EL element was produced as follows.
A glass substrate 11 with ITO 12 (anode 10) and a glass substrate 13 with ITO 14 (cathode), which were subjected to ultrasonic cleaning in the order of surfactant, pure water and isopropanol, and subjected to UV / ozone treatment (manufactured by Philgen, UV253S) for 12 minutes. 20) was prepared.
In the glove box, a small amount of the previously prepared liquid light emitter is dropped onto the cathode 20 (ITO 14) and sandwiched between the anodes 10 and fixed with clips (not shown) from the outside. As shown in FIG. 1, an EL element 1 composed of glass substrate / ITO (anode) / liquid light emitter layer / ITO (cathode) / glass substrate was produced. The element area is 2 mm × 2 mm.

The current density-voltage-external emission efficiency (EQE) and emission spectrum of the produced EL device were measured. The results are shown in FIG. 3 and FIG. When the film thickness of the liquid light emitting layer of this device was calculated from the result of dielectric constant measurement, it was 1.57 (± 0.08) μm.
As shown in FIG. 4, luminescence of three colors derived from EH ₄ DPA, DCJTB, and Coumarin 7 was observed at the same time, and white electroluminescence was confirmed. FIG. 3 shows the device characteristics of the obtained element. When 98.8 V was applied, a current density of 5.57 mA / cm ² and an external luminous efficiency of 0.037% were obtained.

1 Organic EL device (electroluminescent device)
10 Anode 20 Cathode 30 Liquid Emission Layer

Claims

An organic electric field white light emitting device comprising an anode, a cathode, and a light emitting layer that emits white light at room temperature and is interposed between these electrodes.
2. The organic electric field white light emitting device according to claim 1, wherein the light emitting layer contains a material having a carrier transporting ability and a light emitting ability which are liquid at room temperature and a light emitting material, and emits white light as a whole.
The organic light-emitting white light-emitting element according to claim 1, wherein the light-emitting layer contains a carrier transport material that is liquid at room temperature and a light-emitting material, and emits white light as a whole.
4. The organic electric field white light-emitting element according to claim 2, wherein the light-emitting material includes a light-emitting material that is liquid at room temperature.
The organic electric field white light-emitting element according to any one of claims 2 to 4, wherein the light-emitting material includes two kinds of light-emitting materials having a complementary color relationship and emits white light as a whole.
The organic electric field white light emitting element according to claim 2, wherein the material having the carrier transporting ability and the light emitting ability and the light emitting material are in a complementary color relationship and emit white light as a whole.
The organic electric field white light emitting device according to any one of claims 2 to 4, wherein the light emitting material includes light emitting materials of red, green, and blue, and emits white light as a whole.
The material having a carrier transporting ability and a light emitting ability includes a material that emits light of at least one color of red, green, and blue, and the light emitting material emits light of at least one color of red, green, and blue The organic electric field white light emitting element according to claim 2, wherein the entire material includes a material that emits light in red, green, and blue colors, and emits white light as a whole.
3. The light emitting material is one or more red light emitting materials selected from pyran compounds, tetracene compounds, naphthacene compounds, styryl compounds, europium complexes, iridium complexes, osmium complexes, and ruthenium complexes. 9. The organic electric field white light-emitting element according to any one of 1 to 8.
9. The organic material according to claim 2, wherein the light emitting material is one or more green light emitting materials selected from a coumarin compound, a quinacridone compound, an anthracene compound, an iridium complex and a zinc complex. Electric field white light emitting element.
The light emitting material is one or more blue light emitting materials selected from diphenylanthracene compounds, perylene compounds, carbazole compounds, styryl compounds, fluorene compounds and iridium complexes. The organic electric field white light emitting element of Claim 1.
The organic light-emitting white light-emitting element according to any one of claims 2 to 4, wherein the light-emitting material emits white light alone.
The organic electric field white light emitting element according to claim 2 or 3, wherein the material having carrier transporting ability and light emitting ability or the carrier transporting material is a compound represented by the formula (1).

(Wherein X is a carrier transport and light-emitting moiety, and is a carbazole derivative, thianthrene derivative, phenothiazine derivative, azepine derivative, triazole derivative, imidazole derivative, oxadiazole derivative, arylcycloalkane derivative, triarylamine derivative, phenylenediamine. Derivatives, stilbene derivatives, oxazole derivatives, triphenylmethane derivatives, pyrazoline derivatives, fluorenone derivatives, polyaniline derivatives, silane derivatives, pyrrole derivatives, fluorene derivatives, porphyrin derivatives, quinacridone derivatives, triarylphosphine oxide derivatives, carbon condensed ring dyes, metals Or a metal-free phthalocyanine derivative or benzidine,
Y is at least one substituent linked to the carrier transport and light emitting moiety, and may contain an ether bond, a thioether bond, an ester bond, a carbonate bond or an amide bond. Represents. )
The organic electric field white light-emitting element according to claim 13, wherein the charge transport portion X is carbazole.
The organic electric field white light-emitting element according to claim 13 or 14, wherein the substituent Y is an alkyl group having 1 to 30 carbon atoms which may contain an ether bond.
The organic electric field white light emitting element according to claim 15, wherein the carrier transporting material is represented by the formula (3).

(Wherein Y represents the same meaning as described above.)
The organic electric field white light emitting element according to claim 16, wherein the carrier transporting material is represented by the formula (4).
The organic electric field white light emitting element according to claim 16, wherein the carrier transporting material is represented by the formula (5).