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JP2012520872A - Novel organic electroluminescent compound and organic electroluminescent device using the same - Google Patents

Novel organic electroluminescent compound and organic electroluminescent device using the same Download PDF

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JP2012520872A
JP2012520872A JP2012500717A JP2012500717A JP2012520872A JP 2012520872 A JP2012520872 A JP 2012520872A JP 2012500717 A JP2012500717 A JP 2012500717A JP 2012500717 A JP2012500717 A JP 2012500717A JP 2012520872 A JP2012520872 A JP 2012520872A
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organic electroluminescent
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キム，チ・シク
チョー，ヤン・チュン
クォン，ヒョク−チュー
キム，ボン・オク
キム，ソン・ミン
ユーン，スン・スー
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ローム・アンド・ハース・エレクトロニック・マテリアルズ・コリア・リミテッド
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Abstract

新規の有機電界発光化合物およびこれを含む有機電界発光素子が開示される。ＯＬＥＤ素子の有機電界発光材料のホスト材料として使用される場合、開示された有機電界発光化合物は従来のホスト材料と比較して高い発光効率および材料の優れた寿命特性を示す。よって、それは非常に良好な駆動寿命を有するＯＬＥＤを製造するために使用されうる。
【代表図】なしNovel organic electroluminescent compounds and organic electroluminescent devices comprising the same are disclosed. When used as a host material for an organic electroluminescent material in an OLED device, the disclosed organic electroluminescent compound exhibits high luminous efficiency and excellent lifetime characteristics of the material compared to conventional host materials. Thus it can be used to produce OLEDs with very good drive life.
[Representative] None

Description

本発明は、新規の有機電界発光化合物（ｏｒｇａｎｉｃ ｅｌｅｃｔｒｏｌｕｍｉｎｅｓｃｅｎｔ ｃｏｍｐｏｕｎｄ）、およびこれを含む有機電界発光素子（ｏｒｇａｎｉｃ ｅｌｅｃｔｒｏｌｕｍｉｎｅｓｃｅｎｔ ｄｅｖｉｃｅｓ）に関する。具体的には、本発明は、電界発光材料として使用される新規の有機電界発光化合物及びこれをホストとして使用している有機電界発光素子に関する。   The present invention relates to a novel organic electroluminescent compound and an organic electroluminescent device including the same. Specifically, this invention relates to the novel organic electroluminescent compound used as an electroluminescent material, and the organic electroluminescent element which uses this as a host.

ＯＬＥＤ（有機発光ダイオード）の発光効率を決定する最も重要な要因は電界発光材料の種類である。電界発光材料として蛍光材料が現在まで広く使用されてきたが、リン光材料の開発は、電界発光メカニズムの観点から発光効率を理論的に４倍まで向上させるための最良の方法の１つである。   The most important factor that determines the luminous efficiency of an OLED (organic light emitting diode) is the type of electroluminescent material. Although fluorescent materials have been widely used as electroluminescent materials, the development of phosphorescent materials is one of the best ways to theoretically improve luminous efficiency up to 4 times from the viewpoint of electroluminescent mechanism. .

現在まで、イリジウム（ＩＩＩ）錯体はリン光材料として広く知られており、例えば、（ａｃａｃ）Ｉｒ（ｂｔｐ）２、Ｉｒ（ｐｐｙ）３およびＦｉｒｐｉｃはそれぞれ赤色、緑色、および青色のリン光材料として広く知られている。特に、多くのリン光材料が近年、日本、欧州および米国において開発されてきた。 To date, iridium (III) complexes are widely known as phosphorescent materials, for example, (acac) Ir (btp) 2 , Ir (ppy) 3 and Firepic are red, green and blue phosphorescent materials, respectively. Widely known. In particular, many phosphorescent materials have recently been developed in Japan, Europe and the United States.

Figure 2012520872
Figure 2012520872

リン光発光材料のためのホスト材料として、４，４’−Ｎ，Ｎ’−ジカルバゾール−ビフェニル（ＣＢＰ）が現在まで最も広く知られており、正孔ブロッキング層（例えば、ＢＣＰおよびＢＡｌｑ）が適用された高効率のＯＬＥＤが知られている。パイオニア（日本国）などはホストとしてビス（２−メチル−８−キノリナト）（ｐ−フェニルフェノラト）アルミニウム（ＩＩＩ）（ＢＡｌｑ）誘導体を使用する高性能のＯＬＥＤを報告した。   As the host material for phosphorescent materials, 4,4′-N, N′-dicarbazole-biphenyl (CBP) is the most widely known to date and hole blocking layers (eg, BCP and BAlq) are known. Applied high efficiency OLEDs are known. Pioneer (Japan) and others reported high performance OLEDs using bis (2-methyl-8-quinolinato) (p-phenylphenolato) aluminum (III) (BAlq) derivatives as hosts.

Figure 2012520872
Figure 2012520872

先行技術の材料は発光特性の観点からは有利であるが、その材料は低いガラス転移温度および非常に劣った熱安定性を有しており、その結果その材料は高温、真空での蒸着プロセス中に変化する傾向がある。ＯＬＥＤにおいては、電力効率＝（π／電圧）×電流効率が定義される。よって、電力効率は電圧に反比例し、そしてＯＬＥＤのより低い電力消費を得るためには電力効率はより高くあるべきである。実際には、リン光電界発光材料を使用するＯＬＥＤは、蛍光ＥＬ材料を使用するＯＬＥＤよりも有意に高い電流効率（ｃｄ／Ａ）を示す。しかし、リン光材料のホスト材料としてＢＡｌｑおよびＣＢＰのような従来の材料が使用される場合には、蛍光材料を使用するＯＬＥＤと比較してより高い駆動電圧のせいで電力効率（ｌｍ／ｗ）の観点から有意な利点を得ることはできない。さらに、このようなＯＬＥＤは満足な素子寿命をもたらすことができない。   Prior art materials are advantageous in terms of luminescent properties, but they have a low glass transition temperature and very poor thermal stability, so that the material is subjected to high temperature, vacuum deposition processes. Tend to change. In an OLED, power efficiency = (π / voltage) × current efficiency is defined. Thus, power efficiency is inversely proportional to voltage, and power efficiency should be higher to obtain lower power consumption of the OLED. In practice, OLEDs using phosphorescent electroluminescent materials exhibit significantly higher current efficiency (cd / A) than OLEDs using fluorescent EL materials. However, when conventional materials such as BAlq and CBP are used as host materials for phosphorescent materials, power efficiency (lm / w) due to higher drive voltage compared to OLEDs using fluorescent materials No significant advantage can be obtained from this point of view. Furthermore, such OLEDs cannot provide a satisfactory device lifetime.

よって、より向上した安定性および性能を有するホスト材料の開発が必要とされる。   Therefore, there is a need for the development of host materials with improved stability and performance.

本発明者は従来技術の課題を克服することに努め、その結果、優れた発光効率および著しく延長された素子寿命を有する有機電界発光素子を実現するための新規の電界発光化合物を発明した。   The present inventor has sought to overcome the problems of the prior art, and as a result, invented a novel electroluminescent compound for realizing an organic electroluminescent device having excellent luminous efficiency and a significantly extended device lifetime.

よって、本発明の目的はこれらの課題を克服し、そして従来のホスト材料と比較してより良好な発光効率、向上した素子寿命、および適切な色座標をもたらす骨格を含む有機電界発光化合物を提供することである。   Thus, the object of the present invention is to overcome these problems and provide an organic electroluminescent compound comprising a skeleton that provides better luminous efficiency, improved device lifetime, and appropriate color coordinates compared to conventional host materials It is to be.

本発明の別の目的は、前記有機電界発光化合物を電界発光材料として使用する、高効率および長寿命の有機電界発光素子を提供することである。   Another object of the present invention is to provide a high-efficiency and long-life organic electroluminescent device using the organic electroluminescent compound as an electroluminescent material.

具体的には、本発明は化学式（１）〜（５）のいずれかで表される有機電界発光化合物、およびこれを含む有機電界発光素子に関する。本発明の有機電界発光化合物は、従来のホスト材料と比較してより良好な発光効率および優れた寿命特性を提供するので、この化合物から優れた駆動寿命を有するＯＬＥＤが得られうる。   Specifically, the present invention relates to an organic electroluminescent compound represented by any one of chemical formulas (1) to (5), and an organic electroluminescent device including the same. Since the organic electroluminescent compound of the present invention provides better luminous efficiency and superior lifetime characteristics compared to conventional host materials, an OLED having an excellent driving lifetime can be obtained from this compound.

Figure 2012520872
Figure 2012520872

Figure 2012520872
Figure 2012520872

Figure 2012520872
Figure 2012520872

Figure 2012520872
Figure 2012520872

Figure 2012520872
Figure 2012520872

式中、ＸおよびＹは独立してＮ（Ａｒ１）、ＯおよびＳから選択され、Ａｒ１は互いに異なっていてもよく、並びに２以上のＡｒ１基が存在する場合にはＡｒ１はＡｒ１もしくはＡｒ２として表されることができ；
Ｚ１〜Ｚ８は独立してＣ（Ａｒ３）およびＮから選択され、Ａｒ３は互いに異なっていてもよく、並びに隣り合うＡｒ３基は一緒に結合して環を形成していてもよく；
Ａｒ１およびＡｒ２は独立して（Ｃ１−Ｃ６０）アルキル、（Ｃ３−Ｃ６０）シクロアルキル、Ｎ、Ｏ、Ｓ、ＳｉおよびＰから選択される１以上のヘテロ原子を含む５員もしくは６員のヘテロシクロアルキル、（Ｃ７−Ｃ６０）ビシクロアルキル、アダマンチル、（Ｃ２−Ｃ６０）アルケニル、（Ｃ２−Ｃ６０）アルキニル、（Ｃ６−Ｃ６０）アリールおよび（Ｃ３−Ｃ６０）ヘテロアリールから選択され；
Ａｒ３は独立して水素、（Ｃ１−Ｃ６０）アルキル、ハロゲン、シアノ、（Ｃ３−Ｃ６０）シクロアルキル、Ｎ、Ｏ、Ｓ、ＳｉおよびＰから選択される１以上のヘテロ原子を含む５員もしくは６員のヘテロシクロアルキル、（Ｃ７−Ｃ６０）ビシクロアルキル、アダマンチル、（Ｃ２−Ｃ６０）アルケニル、（Ｃ２−Ｃ６０）アルキニル、（Ｃ６−Ｃ６０）アリール、（Ｃ１−Ｃ６０）アルコキシ、（Ｃ６−Ｃ６０）アリールオキシ、（Ｃ３−Ｃ６０）ヘテロアリール、（Ｃ６−Ｃ６０）アリールチオ、（Ｃ１−Ｃ６０）アルキルチオ、モノもしくはジ（Ｃ１−Ｃ３０）アルキルアミノ、モノもしくはジ（Ｃ６−Ｃ３０）アリールアミノ、トリ（Ｃ１−Ｃ３０）アルキルシリル、ジ（Ｃ１−Ｃ３０）アルキル（Ｃ６−Ｃ３０）アリールシリル、トリ（Ｃ６−Ｃ３０）アリールシリル、モノもしくはジ（Ｃ６−Ｃ３０）アリールボラニル、モノもしくはジ（Ｃ１−Ｃ６０）アルキルボラニル、ニトロおよびヒドロキシルから選択され；並びに
Ａｒ１〜Ａｒ３のアルキル、シクロアルキル、ヘテロシクロアルキル、ビシクロアルキル、アダマンチル、アルケニル、アルキニル、アリール、アルコキシ、アリールオキシ、ヘテロアリール、アリールチオ、アルキルチオ、アルキルアミノ、アリールアミノ、トリアルキルシリル、ジアルキルアリールシリル、トリアリールシリル、アリールボラニルもしくはアルキルボラニルは、（Ｃ１−Ｃ６０）アルキル、ハロゲン、シアノ、（Ｃ３−Ｃ６０）シクロアルキル、Ｎ、Ｏ、Ｓ、ＳｉおよびＰから選択される１以上のヘテロ原子を含む５員もしくは６員のヘテロシクロアルキル、（Ｃ７−Ｃ６０）ビシクロアルキル、アダマンチル、（Ｃ２−Ｃ６０）アルケニル、（Ｃ２−Ｃ６０）アルキニル、（Ｃ６−Ｃ６０）アリール、（Ｃ１−Ｃ６０）アルコキシ、（Ｃ６−Ｃ６０）アリールオキシ、Ｐ（＝Ｏ）ＲａＲｂで置換された（Ｃ６−Ｃ６０）アリール［ＲａおよびＲｂは独立して（Ｃ１−Ｃ６０）アルキルもしくは（Ｃ６−Ｃ６０）アリールを表す］、（Ｃ３−Ｃ６０）ヘテロアリール、（Ｃ６−Ｃ６０）アリールで置換された（Ｃ３−Ｃ６０）ヘテロアリール、（Ｃ１−Ｃ６０）アルキルで置換された（Ｃ３−Ｃ６０）ヘテロアリール、（Ｃ６−Ｃ６０）アリール（Ｃ１−Ｃ６０）アルキル、（Ｃ６−Ｃ６０）アリールチオ、（Ｃ１−Ｃ６０）アルキルチオ、モノもしくはジ（Ｃ１−Ｃ３０）アルキルアミノ、モノもしくはジ（Ｃ６−Ｃ３０）アリールアミノ、トリ（Ｃ１−Ｃ３０）アルキルシリル、ジ（Ｃ１−Ｃ３０）アルキル（Ｃ６−Ｃ３０）アリールシリル、トリ（Ｃ６−Ｃ３０）アリールシリル、モノもしくはジ（Ｃ６−Ｃ３０）アリールボラニル、モノもしくはジ（Ｃ１−Ｃ６０）アルキルボラニル、ニトロおよびヒドロキシルからなる群から選択される１種以上の置換基によってさらに置換されていてよく、
ただし、ＸおよびＹの双方がＮ（Ａｒ１）であり、かつＺ１〜Ｚ８の全てがＣ（Ａｒ３）である場合を除く。 Wherein, X and Y are independently N (Ar 1), is selected from O and S, Ar 1 may be different from each other, and Ar 1 in the case where two or more Ar 1 groups are present Ar Can be represented as 1 or Ar 2 ;
Z 1 to Z 8 are independently selected from C (Ar 3 ) and N, Ar 3 may be different from each other, and adjacent Ar 3 groups may be bonded together to form a ring. ;
Ar 1 and Ar 2 are independently 5- or 6-membered containing one or more heteroatoms selected from (C1-C60) alkyl, (C3-C60) cycloalkyl, N, O, S, Si and P Selected from heterocycloalkyl, (C7-C60) bicycloalkyl, adamantyl, (C2-C60) alkenyl, (C2-C60) alkynyl, (C6-C60) aryl and (C3-C60) heteroaryl;
Ar 3 is a 5-membered or independently containing one or more heteroatoms selected from hydrogen, (C1-C60) alkyl, halogen, cyano, (C3-C60) cycloalkyl, N, O, S, Si and P 6-membered heterocycloalkyl, (C7-C60) bicycloalkyl, adamantyl, (C2-C60) alkenyl, (C2-C60) alkynyl, (C6-C60) aryl, (C1-C60) alkoxy, (C6-C60) Aryloxy, (C3-C60) heteroaryl, (C6-C60) arylthio, (C1-C60) alkylthio, mono- or di (C1-C30) alkylamino, mono- or di (C6-C30) arylamino, tri (C1 -C30) alkylsilyl, di (C1-C30) alkyl (C6-C30) arylsilyl , Tri (C6-C30) arylsilyl, mono or di (C6-C30) arylboranyl, mono or di (C1-C60) alkylboranyl, nitro and hydroxyl; and Ar 1 -Ar 3 alkyl; Cycloalkyl, heterocycloalkyl, bicycloalkyl, adamantyl, alkenyl, alkynyl, aryl, alkoxy, aryloxy, heteroaryl, arylthio, alkylthio, alkylamino, arylamino, trialkylsilyl, dialkylarylsilyl, triarylsilyl, arylbora Nyl or alkylboranyl is a 5-membered containing one or more heteroatoms selected from (C1-C60) alkyl, halogen, cyano, (C3-C60) cycloalkyl, N, O, S, Si and P Or 6-membered heterocycloalkyl, (C7-C60) bicycloalkyl, adamantyl, (C2-C60) alkenyl, (C2-C60) alkynyl, (C6-C60) aryl, (C1-C60) alkoxy, (C6-C60) ) Aryloxy, (C6-C60) aryl substituted with P (= O) R a R b [R a and R b independently represent (C1-C60) alkyl or (C6-C60) aryl], (C3-C60) heteroaryl, (C3-C60) heteroaryl substituted with (C6-C60) aryl, (C1-C60) heteroaryl substituted with (C1-C60) alkyl, (C6-C60) aryl (C1-C60) alkyl, (C6-C60) arylthio, (C1-C60) alkylthio, mono or (C1-C30) alkylamino, mono- or di (C6-C30) arylamino, tri (C1-C30) alkylsilyl, di (C1-C30) alkyl (C6-C30) arylsilyl, tri (C6-C30) aryl May be further substituted with one or more substituents selected from the group consisting of silyl, mono or di (C6-C30) arylboranyl, mono or di (C1-C60) alkylboranyl, nitro and hydroxyl;
However, the case where both X and Y are N (Ar 1 ) and all of Z 1 to Z 8 are C (Ar 3 ) is excluded.

本明細書において記載される場合、「（Ｃ１−Ｃ６０）アルキル」部分を含む置換基は１〜６０個の炭素原子、１〜２０個の炭素原子、または１〜１０個の炭素原子を含むことができる。「（Ｃ６−Ｃ６０）アリール」部分を含む置換基は６〜６０個の炭素原子、６〜２０個の炭素原子、または６〜１２個の炭素原子を含むことができる。「（Ｃ３−Ｃ６０）ヘテロアリール」部分を含む置換基は３〜６０個の炭素原子、４〜２０個の炭素原子、または４〜１２個の炭素原子を含むことができる。「（Ｃ３−Ｃ６０）シクロアルキル」部分を含む置換基は３〜６０個の炭素原子、３〜２０個の炭素原子、または３〜７個の炭素原子を含むことができる。「（Ｃ２−Ｃ６０）アルケニルもしくはアルキニル」部分を含む置換基は２〜６０個の炭素原子、２〜２０個の炭素原子、または２〜１０個の炭素原子を含むことができる。   As described herein, a substituent containing a “(C1-C60) alkyl” moiety contains 1 to 60 carbon atoms, 1 to 20 carbon atoms, or 1 to 10 carbon atoms. Can do. Substituents containing a “(C 6 -C 60) aryl” moiety can contain 6 to 60 carbon atoms, 6 to 20 carbon atoms, or 6 to 12 carbon atoms. Substituents containing a “(C3-C60) heteroaryl” moiety can contain 3 to 60 carbon atoms, 4 to 20 carbon atoms, or 4 to 12 carbon atoms. Substituents containing a “(C 3 -C 60) cycloalkyl” moiety can contain 3 to 60 carbon atoms, 3 to 20 carbon atoms, or 3 to 7 carbon atoms. Substituents containing a “(C 2 -C 60) alkenyl or alkynyl” moiety can contain 2 to 60 carbon atoms, 2 to 20 carbon atoms, or 2 to 10 carbon atoms.

本発明の用語「アルキル」は線状もしくは分岐で飽和の一価の炭化水素基もしくはその組み合わせを含み、これは炭素原子と水素原子とのみから構成される。用語「アルコキシ」は−Ｏ−アルキル基を意味し、このアルキルは上述のように定義される。   The term “alkyl” in the present invention includes linear or branched, saturated monovalent hydrocarbon groups or combinations thereof, which are composed solely of carbon and hydrogen atoms. The term “alkoxy” means an —O-alkyl group, where alkyl is defined as above.

本明細書に記載される用語「アリール」は、芳香族炭化水素から１つの水素原子を除去することによりその芳香族炭化水素から得られる有機基を表す。アリール基には単環系もしくは縮合環系が挙げられ、そのそれぞれの環は好適には４〜７個、好ましくは５もしくは６個の環原子を含む。２以上のアリール基が化学結合を介して一緒にされている構造も含まれる。具体的な例としては、フェニル、ナフチル、ビフェニル、アントリル、インデニル、フルオレニル、フェナントリル、トリフェニレニル、ピレニル、ペリレニル、クリセニル、ナフタセニル、フルオランテニルなどが挙げられるが、これらに限定されない。   As used herein, the term “aryl” refers to an organic group derived from an aromatic hydrocarbon by removing one hydrogen atom from the aromatic hydrocarbon. Aryl groups include monocyclic or fused ring systems, each ring suitably containing 4 to 7, preferably 5 or 6 ring atoms. Also included are structures in which two or more aryl groups are brought together through chemical bonds. Specific examples include, but are not limited to, phenyl, naphthyl, biphenyl, anthryl, indenyl, fluorenyl, phenanthryl, triphenylenyl, pyrenyl, perylenyl, chrycenyl, naphthacenyl, fluoranthenyl and the like.

本明細書に記載される用語「ヘテロアリール」は、芳香族環骨格原子のためのＮ、ＯおよびＳから選択される１〜４個のヘテロ原子と、残りの芳香族環骨格原子のための炭素原子とを含むアリール基を意味する。ヘテロアリールは、５員もしくは６員の単環式ヘテロアリール、または１以上のベンゼン環と縮合している多環式ヘテロアリールであってよく、部分的に飽和されていてよい。化学結合を介して結合されている１以上のヘテロアリール基を有する構造も含まれる。ヘテロアリール基には、そのヘテロ原子が酸化されるかまたは四級化されて、Ｎ−オキシド、第四級塩などを形成する２価のアリール基も挙げられうる。具体的な例には、単環式ヘテロアリール基、例えば、フリル、チエニル、ピロリル、イミダゾリル、ピラゾリル、チアゾリル、チアジアゾリル、イソチアゾリル、イソオキサゾリル、オキサゾリル、オキサジアゾリル、トリアジニル、テトラジニル、トリアゾリル、テトラゾリル、フラザニル、ピリジル、ピラジニル、ピリミジニル、ピリダジニル；多環式ヘテロアリール基、例えば、ベンゾフリル、ベンゾチエニル、イソベンゾフリル、ベンゾイミダゾリル、ベンゾチアゾリル、ベンゾイソチアゾリル、ベンゾイソオキサゾリル、ベンゾオキサゾリル、イソインドリル、インドリル、インダゾリル、ベンゾチアジアゾリル、キノリル、イソキノリル、シンノリニル、キナゾリニル、キノリジニル、キノキサリニル、カルバゾリル、フェナントリジニルおよびベンゾジオキソリル；並びに、その対応するＮ−オキシド（例えば、ピリジルＮ−オキシド、キノリルＮ−オキシド）、および第四級塩が挙げられるが、これらに限定されない。   As described herein, the term “heteroaryl” refers to 1 to 4 heteroatoms selected from N, O and S for an aromatic ring backbone atom and the remaining aromatic ring backbone atoms. An aryl group containing a carbon atom is meant. The heteroaryl may be a 5 or 6 membered monocyclic heteroaryl, or a polycyclic heteroaryl fused with one or more benzene rings, and may be partially saturated. Also included are structures having one or more heteroaryl groups linked through chemical bonds. A heteroaryl group can also include a divalent aryl group in which the heteroatom is oxidized or quaternized to form an N-oxide, quaternary salt, or the like. Specific examples include monocyclic heteroaryl groups such as furyl, thienyl, pyrrolyl, imidazolyl, pyrazolyl, thiazolyl, thiadiazolyl, isothiazolyl, isoxazolyl, oxazolyl, oxadiazolyl, triazinyl, tetrazinyl, triazolyl, tetrazolyl, furazanyl, pyridyl, Pyrazinyl, pyrimidinyl, pyridazinyl; polycyclic heteroaryl groups such as benzofuryl, benzothienyl, isobenzofuryl, benzoimidazolyl, benzothiazolyl, benzoisothiazolyl, benzoisoxazolyl, benzoxazolyl, isoindolyl, indolyl, indazolyl, Benzothiadiazolyl, quinolyl, isoquinolyl, cinnolinyl, quinazolinyl, quinolidinyl, quinoxalinyl, carbazolyl, phenane Lysinyl and benzodioxolyl; and their corresponding N- oxide (e.g., pyridyl N- oxide, quinolyl N- oxide), and quaternary salts include, but are not limited to.

本発明の有機電界発光化合物は下記化学式のいずれかで表される化合物によって例示されうる：

Figure 2012520872
Figure 2012520872
Figure 2012520872
 式中、Ａｒ１およびＡｒ２は化学式（１）〜（５）におけるように定義される。 The organic electroluminescent compounds of the present invention may be exemplified by compounds represented by any of the following chemical formulas:
Figure 2012520872
Figure 2012520872
Figure 2012520872
 In the formula, Ar 1 and Ar 2 are defined as in chemical formulas (1) to (5).

さらに、本発明の有機電界発光化合物は下記化学式のいずれかで表される化合物によって例示されうる：

Figure 2012520872
式中、Ａｒ１およびＡｒ２は化学式（１）〜（５）におけるように定義される。 Furthermore, the organic electroluminescent compound of the present invention may be exemplified by a compound represented by any of the following chemical formulas:
Figure 2012520872
 In the formula, Ar 1 and Ar 2 are defined as in chemical formulas (1) to (5).

本発明の有機電界発光化合物は下記化学式のいずれかで表される化合物によって具体的に例示されうる：

Figure 2012520872
式中、Ａｒ１は化学式（１）〜（５）におけるように定義される。 The organic electroluminescent compound of the present invention may be specifically exemplified by a compound represented by any of the following chemical formulas:
Figure 2012520872
 In the formula, Ar 1 is defined as in chemical formulas (1) to (5).

より具体的には、Ａｒ１およびＡｒ２は独立して、フェニル、１−ナフチルもしくは２−ナフチル、または下記化学式のいずれかで表される置換基を表すが、これに限定されない：

Figure 2012520872
Figure 2012520872
 More specifically, Ar 1 and Ar 2 independently represent phenyl, 1-naphthyl or 2-naphthyl, or a substituent represented by any of the following chemical formulas, but are not limited thereto:
Figure 2012520872
Figure 2012520872

本発明は、第１の電極；第２の電極；並びに、第１の電極と第２の電極との間に設けられた少なくとも１つの有機層；を含んでなる有機電界発光素子であって、化学式（１）〜（５）のいずれかで表される有機電界発光化合物の１種以上を前記有機層が含む有機電界発光素子も提供する。   The present invention is an organic electroluminescent device comprising: a first electrode; a second electrode; and at least one organic layer provided between the first electrode and the second electrode, There is also provided an organic electroluminescent device in which the organic layer contains at least one organic electroluminescent compound represented by any one of chemical formulas (1) to (5).

本発明の有機電界発光素子は、有機層が電界発光層を含み、当該電界発光層が電界発光ホストとして化学式（１）〜（５）のいずれかで表される化合物の１種以上と、１種以上のリン光ドーパントとを含むことで特徴付けられる。このドーパントは特に限定されない。   In the organic electroluminescent element of the present invention, the organic layer includes an electroluminescent layer, and the electroluminescent layer is one or more of compounds represented by any one of chemical formulas (1) to (5) as an electroluminescent host, and 1 Characterized by containing more than one phosphorescent dopant. This dopant is not particularly limited.

本発明の有機電界発光素子は、化学式（１）〜（５）のいずれかによって表される有機電界発光化合物の１種以上と共に、アリールアミン化合物およびスチリルアリールアミン化合物からなる群から選択される１種以上の化合物をさらに含むことができる。   The organic electroluminescent element of the present invention is selected from the group consisting of an arylamine compound and a styrylarylamine compound together with one or more organic electroluminescent compounds represented by any one of chemical formulas (1) to (5). More than one compound may be further included.

本発明の有機電界発光素子においては、有機層は化学式（１）〜（５）のいずれかで表される有機電界発光化合物の１種以上と共に、第１族、第２族、第４周期および第５周期遷移金属、ランタニド金属並びにｄ−遷移元素、またはその複合体の有機金属からなる群から選択される１種以上の金属をさらに含むことができる。有機層は電界発光層および電荷発生層を含むことができる。   In the organic electroluminescent element of the present invention, the organic layer has one or more organic electroluminescent compounds represented by any one of the chemical formulas (1) to (5), the first group, the second group, the fourth period, and It may further include one or more metals selected from the group consisting of a fifth periodic transition metal, a lanthanide metal and a d-transition element, or an organic metal of a complex thereof. The organic layer can include an electroluminescent layer and a charge generation layer.

有機電界発光素子は、白色光を発光する有機電界発光素子を形成するために、上述のような有機電界発光化合物に加えて、青色、緑色、もしくは赤色の光を発光する１種以上の有機電界発光層を含むこともできる。   In order to form an organic electroluminescent element that emits white light, the organic electroluminescent element includes at least one organic electric field that emits blue, green, or red light in addition to the organic electroluminescent compound as described above. A light emitting layer can also be included.

本発明の有機電界発光化合物は、ＯＬＥＤの有機電界発光材料のホスト材料として使用される場合に優れた発光効率および材料の非常に良好な寿命特性を示し、その結果その化合物から非常に良好な駆動寿命を有するＯＬＥＤが製造されうる。   The organic electroluminescent compound of the present invention exhibits excellent luminous efficiency and very good lifetime characteristics of the material when used as a host material of an organic electroluminescent material of an OLED, resulting in very good driving from the compound OLEDs with a lifetime can be manufactured.

本発明の典型的な有機電界発光化合物、その製造、および電界発光素子の発光特性を示すために、製造例および実施例を参照することにより本発明がさらに説明されるが、これら実施例は本発明の実施形態をより良好に理解するだけのために提供されるのであり、何らかの手段によって本発明の範囲を限定することを意図するものではない。   In order to show the typical organic electroluminescent compounds of the present invention, their production, and the luminescent properties of electroluminescent devices, the present invention is further illustrated by reference to the production examples and examples, which are It is provided only for a better understanding of the embodiments of the invention and is not intended to limit the scope of the invention by any means.

製造例
［製造例１］化合物（Ａ）の製造

Figure 2012520872
Production Example [Production Example 1] Production of Compound (A)
Figure 2012520872

化合物（Ａ−１）の製造
ブロモ−２−ニトロベンゼン（３０ｇ、１４８．５ｍｍｏｌ）、１−ナフタレンボロン酸（３０．６ｇ、１７８．２ｍｍｏｌ）、Ｐｄ（ＰＰｈ３）４（５．１４ｇ、４．４５ｍｍｏｌ）、２ＭのＫ２ＣＯ３水溶液（２９７．０１ｍｍｏｌ）、トルエン（５００ｍＬ）およびエタノール（２００ｍＬ）の混合物を還流下で４時間攪拌した。この混合物を周囲温度まで冷却した後で、これに蒸留水を添加した。得られた混合物を酢酸エチルで抽出し、その抽出物を硫酸マグネシウムで乾燥させ、減圧下で蒸留した。カラムを通した精製で化合物（Ａ−１）（３１ｇ、１２４．３ｍｍｏｌ、８４．０３％）を得た。 Production of Compound (A-1) Bromo-2-nitrobenzene (30 g, 148.5 mmol), 1-naphthaleneboronic acid (30.6 g, 178.2 mmol), Pd (PPh 3 ) 4 (5.14 g, 4.45 mmol) ) A mixture of 2M aqueous K 2 CO 3 (297.01 mmol), toluene (500 mL) and ethanol (200 mL) was stirred at reflux for 4 hours. After the mixture was cooled to ambient temperature, distilled water was added thereto. The resulting mixture was extracted with ethyl acetate and the extract was dried over magnesium sulfate and distilled under reduced pressure. Purification through a column gave compound (A-1) (31 g, 124.3 mmol, 84.03%).

化合物（Ａ−２）の製造
化合物（Ａ−１）（３１ｇ、１２４．３ｍｍｏｌ）およびトリエチルホスファイト（３００ｍＬ）の混合物を還流下で１０時間攪拌した。この混合物を周囲温度まで冷却した後で、減圧下で有機溶媒を蒸留除去した。これに蒸留水を添加し、混合物を酢酸エチルで抽出した。この抽出物を硫酸マグネシウムで乾燥させ、減圧下で蒸留した。カラムを通した精製で化合物（Ａ−２）（１８ｇ、８２．８４ｍｍｏｌ、６６．８１％）を得た。 Preparation of Compound (A-2) A mixture of compound (A-1) (31 g, 124.3 mmol) and triethyl phosphite (300 mL) was stirred under reflux for 10 hours. After cooling the mixture to ambient temperature, the organic solvent was distilled off under reduced pressure. Distilled water was added thereto, and the mixture was extracted with ethyl acetate. The extract was dried over magnesium sulfate and distilled under reduced pressure. Purification through a column gave compound (A-2) (18 g, 82.84 mmol, 66.81%).

化合物（Ａ−３）の製造
化合物（Ａ−２）（１８ｇ、８２．８４ｍｍｏｌ）、１，５−ジフェニル−３−クロロピリジン（２６．４ｇ、９９．４１ｍｍｏｌ）、Ｐｄ（ＯＡｃ）２（１．８５ｇ、８．２８ｍｍｏｌ）、Ｐ（ｔ−ｂｕ）３（８．１７ｍｌ、１６．５ｍｍｏｌ、キシレン中５０％）、ＮａＯｔ−ｂｕ（２３．８ｇ、２４８．５ｍｍｏｌ）およびトルエン（５００ｍＬ）の混合物を還流下で１２時間攪拌した。この混合物を周囲温度まで冷却した後で、これに蒸留水を添加し、混合物を酢酸エチルで抽出した。この抽出物を硫酸マグネシウムで乾燥させ、減圧下で蒸留した。カラムを通した精製で化合物（Ａ−３）（１９ｇ、４２．５４ｍｍｏｌ、５１．３６％）を得た。 Production of Compound (A-3) Compound (A-2) (18 g, 82.84 mmol), 1,5-diphenyl-3-chloropyridine (26.4 g, 99.41 mmol), Pd (OAc) 2 (1. Reflux a mixture of 85 g, 8.28 mmol), P (t-bu) 3 (8.17 ml, 16.5 mmol, 50% in xylene), NaOt-bu (23.8 g, 248.5 mmol) and toluene (500 mL). Stir for 12 hours. After the mixture was cooled to ambient temperature, distilled water was added to it and the mixture was extracted with ethyl acetate. The extract was dried over magnesium sulfate and distilled under reduced pressure. Purification through a column gave compound (A-3) (19 g, 42.54 mmol, 51.36%).

化合物（Ａ−４）の製造
ＤＭＦ（２００ｍＬ）に溶解した化合物（Ａ−３）（１９ｇ、４２．５４ｍｍｏｌ）の溶液に、ＮＢＳ（８．３３ｇ、４６．８０ｍｍｏｌ）を添加した。周囲温度で１０時間後、減圧下で有機溶媒を蒸留除去した。これに蒸留水を添加し、混合物を酢酸エチルで抽出した。この抽出物を硫酸マグネシウムで乾燥させ、減圧下で蒸留した。カラムを通した精製で化合物（Ａ−４）（２０ｇ、３８．０６ｍｍｏｌ、８９．４７％）を得た。 Production of Compound (A-4) NBS (8.33 g, 46.80 mmol) was added to a solution of the compound (A-3) (19 g, 42.54 mmol) dissolved in DMF (200 mL). After 10 hours at ambient temperature, the organic solvent was distilled off under reduced pressure. Distilled water was added thereto, and the mixture was extracted with ethyl acetate. The extract was dried over magnesium sulfate and distilled under reduced pressure. Purification through a column gave compound (A-4) (20 g, 38.06 mmol, 89.47%).

化合物（Ａ−５）の製造
ＴＨＦ２００ｍＬに溶解した化合物（Ａ−４）（２０ｇ、３８．０６ｍｍｏｌ）の溶液に、ｎ−ｂｕＬｉ（１５．２２ｍＬ、３８．０６ｍｍｏｌ、ヘキサン中２．５Ｍ）を−７８℃でゆっくりと添加した。１時間攪拌した後で、これにホウ酸トリメチル（５．５１ｍＬ、４９．４８ｍｍｏｌ）を添加した。この混合物をゆっくりと周囲温度まで暖め、１２時間攪拌した。蒸留水を添加し、混合物を酢酸エチルで抽出した。この抽出物を硫酸マグネシウムで乾燥させ、減圧下で蒸留した。カラムを通した精製で化合物（Ａ−５）（８ｇ、１６．３１ｍｍｏｌ、４２．８６％）を得た。 Preparation of Compound (A-5) In a solution of Compound (A-4) (20 g, 38.06 mmol) dissolved in 200 mL of THF, n-buLi (15.22 mL, 38.06 mmol, 2.5 M in hexane) was −78. Slowly added at ° C. After stirring for 1 hour, trimethyl borate (5.51 mL, 49.48 mmol) was added thereto. The mixture was slowly warmed to ambient temperature and stirred for 12 hours. Distilled water was added and the mixture was extracted with ethyl acetate. The extract was dried over magnesium sulfate and distilled under reduced pressure. Purification through a column gave compound (A-5) (8 g, 16.31 mmol, 42.86%).

化合物（Ａ−６）の製造
化合物（Ａ−５）（８ｇ、１６．３１ｍｍｏｌ）、ブロモ−２−ニトロベンゼン（３．９５ｇ、１９．５７ｍｍｏｌ）、Ｐｄ（ＰＰｈ３）４（０．５６ｇ、０．４８ｍｍｏｌ）、２ＭのＫ２ＣＯ３水溶液（１６ｍＬ、３２．６２ｍｍｏｌ）、トルエン（７０ｍＬ）、およびエタノール（２０ｍＬ）の混合物を還流下で攪拌した。化合物（Ａ−１）の合成と同じ手順に従って、化合物（Ａ−６）（７ｇ、１２．３３ｍｍｏｌ、７５．６２％）が得られた。 Production of Compound (A-6) Compound (A-5) (8 g, 16.31 mmol), bromo-2-nitrobenzene (3.95 g, 19.57 mmol), Pd (PPh 3 ) 4 (0.56 g, 0.35 mmol). 48 mmol), a mixture of 2M aqueous K 2 CO 3 (16 mL, 32.62 mmol), toluene (70 mL), and ethanol (20 mL) was stirred under reflux. According to the same procedure as the synthesis of compound (A-1), compound (A-6) (7 g, 12.33 mmol, 75.62%) was obtained.

化合物（Ａ−７）の製造
化合物（Ａ−６）（７ｇ、１２．３３ｍｍｏｌ）がトリエチルホスファイト（１００ｍＬ）と混合され、化合物（Ａ−２）の合成と同じ手順が行われて、化合物（Ａ−７）（４ｇ、７．４６ｍｍｏｌ、５８．３３％）を得た。 Production of Compound (A-7) Compound (A-6) (7 g, 12.33 mmol) was mixed with triethyl phosphite (100 mL), and the same procedure as the synthesis of compound (A-2) was performed to obtain compound (A A-7) (4 g, 7.46 mmol, 58.33%) was obtained.

化合物（Ａ）の製造
化合物（Ａ−７）（４ｇ、７．４６ｍｍｏｌ）、ヨードベンゼン（１．２５ｍＬ、１１．２０ｍｍｏｌ）、銅粉体（０．１７ｇ、１１．２０ｍｍｏｌ）、Ｋ２ＣＯ３（３．０９ｇ）、１８−クラウン−６（０．１５ｇ、１．５９ｍｍｏｌ）および１，２−ジクロロベンゼン（１００ｍＬ）の混合物を還流下で１５時間攪拌した。この反応混合物を周囲温度まで冷却した後で、減圧下で有機溶媒を蒸留除去した。これに蒸留水を添加し、混合物を酢酸エチルで抽出した。この抽出物をカラムを通して精製して、化合物（Ａ）（３．６ｇ、５．８８ｍｍｏｌ、７８．８８％）を得た。 Production of Compound (A) Compound (A-7) (4 g, 7.46 mmol), iodobenzene (1.25 mL, 11.20 mmol), copper powder (0.17 g, 11.20 mmol), K 2 CO 3 ( 3.09 g), 18-crown-6 (0.15 g, 1.59 mmol) and 1,2-dichlorobenzene (100 mL) were stirred under reflux for 15 hours. After cooling the reaction mixture to ambient temperature, the organic solvent was distilled off under reduced pressure. Distilled water was added thereto, and the mixture was extracted with ethyl acetate. The extract was purified through a column to obtain compound (A) (3.6 g, 5.88 mmol, 78.88%).

［製造例２］化合物（Ｂ）の製造

Figure 2012520872
[Production Example 2] Production of compound (B)
Figure 2012520872

化合物（Ｂ−１）の製造
１，４−ジブロモ−２，３−ジニトロベンゼン（２０ｇ、６１．３６ｍｍｏｌ）、１−ナフタレンボロン酸（２６ｇ、１５３．４２ｍｍｏｌ）、Ｐｄ（ＰＰｈ３）４（３．５４ｇ、３．０６ｍｍｏｌ）、２ＭのＫ２ＣＯ３水溶液（９０ｍＬ）、トルエン（２００ｍＬ）およびエタノール（１００ｍＬ）の混合物を還流下で１０時間攪拌した。この反応混合物を周囲温度まで冷却した後で、これに蒸留水を添加し、得られた混合物を酢酸エチルで抽出した。この抽出物を硫酸マグネシウムで乾燥させ、減圧下で蒸留した。カラムを通した精製で化合物（Ｂ−１）（２２ｇ、５２．３２ｍｍｏｌ、８５．２８％）を得た。 Production of Compound (B-1) 1,4-Dibromo-2,3-dinitrobenzene (20 g, 61.36 mmol), 1-naphthaleneboronic acid (26 g, 153.42 mmol), Pd (PPh 3 ) 4 (3. 54 g, 3.06 mmol) A mixture of 2M aqueous K 2 CO 3 (90 mL), toluene (200 mL) and ethanol (100 mL) was stirred at reflux for 10 hours. After cooling the reaction mixture to ambient temperature, distilled water was added to it and the resulting mixture was extracted with ethyl acetate. The extract was dried over magnesium sulfate and distilled under reduced pressure. Purification through a column gave compound (B-1) (22 g, 52.32 mmol, 85.28%).

化合物（Ｂ−２）の製造
化合物（Ｂ−１）（２２ｇ、５２．３２ｍｍｏｌ）およびトリエチルホスファイト（２００ｍＬ）を混合して１８０℃で攪拌した。化合物（Ａ−２）の合成と同じ手順に従って、化合物（Ｂ−２）（１０ｇ、２８．０５ｍｍｏｌ、５３．９５％）を得た。 Production of Compound (B-2) Compound (B-1) (22 g, 52.32 mmol) and triethyl phosphite (200 mL) were mixed and stirred at 180 ° C. According to the same procedure as the synthesis of compound (A-2), compound (B-2) (10 g, 28.05 mmol, 53.95%) was obtained.

化合物（Ｂ−３）の製造
化合物（Ｂ−２）（１０ｇ、２８．０５ｍｍｏｌ）、２−ヨードナフタレン（７．１ｇ、２８．０５ｍｍｏｌ）、銅粉体（２．６７ｇ、４２．０８ｍｍｏｌ）、Ｋ２ＣＯ３（１１．６３ｇ、８４．１７ｍｍｏｌ）、１８−クラウン−６（０．５９ｇ、２．２４ｍｍｏｌ）および１，２−ジクロロベンゼン（１００ｍＬ）の混合物を１９０℃で２０時間攪拌した。周囲温度まで冷却した後で、減圧下で有機溶媒を蒸留除去した。これに蒸留水を添加し、この混合物を酢酸エチルで抽出した。この抽出物を硫酸マグネシウムで乾燥させ、減圧下で蒸留した。カラムを通した精製で化合物（Ｂ−３）（４ｇ、８．２８ｍｍｏｌ、２９．６０％）を得た。 Production of Compound (B-3) Compound (B-2) (10 g, 28.05 mmol), 2-iodonaphthalene (7.1 g, 28.05 mmol), copper powder (2.67 g, 42.08 mmol), K A mixture of 2 CO 3 (11.63 g, 84.17 mmol), 18-crown-6 (0.59 g, 2.24 mmol) and 1,2-dichlorobenzene (100 mL) was stirred at 190 ° C. for 20 hours. After cooling to ambient temperature, the organic solvent was distilled off under reduced pressure. Distilled water was added thereto, and the mixture was extracted with ethyl acetate. The extract was dried over magnesium sulfate and distilled under reduced pressure. Purification through a column gave compound (B-3) (4 g, 8.28 mmol, 29.60%).

化合物（Ｂ）の製造
ＤＭＦ（２０ｍＬ）中に溶解されたＮａＨ（０．４９ｇ、１２．４３ｍｍｏｌ、鉱物油中６０％分散物）を収容する反応容器に、ＤＭＦ（２０ｍＬ）中に溶解された化合物（Ｂ−３）（４ｇ、８．２８ｍｍｏｌ）の溶液を添加した。１時間後、これに、ＤＭＦ（２０ｍＬ）中に溶解された２−クロロ−４，６−ジフェニルトリアジン（２．６６ｇ、９．９４ｍｍｏｌ）の溶液を添加した。１２時間の攪拌後、蒸留水を添加し、生じた固体を減圧下で濾別した。酢酸エチルおよびＤＭＦからの再結晶化によって化合物（Ｂ）（３．５ｇ、４．９０ｍｍｏｌ、５９．２１％）を得た。 Preparation of Compound (B) Compound dissolved in DMF (20 mL) in a reaction vessel containing NaH (0.49 g, 12.43 mmol, 60% dispersion in mineral oil) dissolved in DMF (20 mL) A solution of (B-3) (4 g, 8.28 mmol) was added. After 1 hour, to this was added a solution of 2-chloro-4,6-diphenyltriazine (2.66 g, 9.94 mmol) dissolved in DMF (20 mL). After stirring for 12 hours, distilled water was added and the resulting solid was filtered off under reduced pressure. Recrystallization from ethyl acetate and DMF gave compound (B) (3.5 g, 4.90 mmol, 59.21%).

［製造例３］化合物（Ｃ）の製造

Figure 2012520872
[Production Example 3] Production of compound (C)
Figure 2012520872

化合物（Ｃ−１）の製造
エタノール（１０００ｍＬ）中に溶解した１，２−シクロヘキシルジオン（４２．５２ｇ、３７９．２６ｍｍｏｌ）の溶液に、２−ナフチルヒドラジン（２０ｇ、１２６．４２ｍｍｏｌ）をゆっくりと添加した。これに酢酸（０．２８ｍＬ、５．０５ｍｍｏｌ）を添加し、この混合物を４０℃に加熱した。２時間後、この混合物を冷却し、これに蒸留水を添加した。生じた固体は減圧下で濾別されて、化合物（Ｃ−１）（１７ｇ、６７．３７ｍｍｏｌ、５３．４７％）を得た。 Preparation of Compound (C-1) 2-Naphthylhydrazine (20 g, 126.42 mmol) was slowly added to a solution of 1,2-cyclohexyldione (42.52 g, 379.26 mmol) dissolved in ethanol (1000 mL). did. To this was added acetic acid (0.28 mL, 5.05 mmol) and the mixture was heated to 40 ° C. After 2 hours, the mixture was cooled and distilled water was added thereto. The resulting solid was filtered off under reduced pressure to obtain compound (C-1) (17 g, 67.37 mmol, 53.47%).

化合物（Ｃ−２）の製造
酢酸（１００ｍＬ）中に溶解した化合物（Ｃ−１）（１７ｇ、６７．３７ｍｍｏｌ）に、トリフルオロ酢酸（１０ｍＬ）を添加した。周囲温度で２時間攪拌後、これに蒸留水を添加した。この混合物をＮａＯＨ水溶液で中和し、酢酸エチルで抽出した。この抽出物を硫酸マグネシウムで乾燥させ、減圧下で蒸留した。カラムを通した精製で化合物（Ｃ−２）（１１ｇ、４６．７５ｍｍｏｌ、６９．３９％）を得た。 Preparation of Compound (C-2) To compound (C-1) (17 g, 67.37 mmol) dissolved in acetic acid (100 mL) was added trifluoroacetic acid (10 mL). After stirring for 2 hours at ambient temperature, distilled water was added thereto. The mixture was neutralized with aqueous NaOH and extracted with ethyl acetate. The extract was dried over magnesium sulfate and distilled under reduced pressure. Purification through a column gave compound (C-2) (11 g, 46.75 mmol, 69.39%).

化合物（Ｃ−３）の製造
化合物（Ｂ−３）の合成と同じ手順に従って、化合物（Ｃ−３）（１０ｇ、３２．１１ｍｍｏｌ、６８．６９％）を得た。 Production of Compound (C-3) According to the same procedure as the synthesis of Compound (B-3), Compound (C-3) (10 g, 32.11 mmol, 68.69%) was obtained.

化合物（Ｃ−４）の製造
化合物（Ｃ−１）の合成と同じ手順に従って、化合物（Ｃ−４）（１２ｇ、２９．８８ｍｍｏｌ、９３．０７％）を得た。 Production of Compound (C-4) According to the same procedure as the synthesis of Compound (C-1), Compound (C-4) (12 g, 29.88 mmol, 93.07%) was obtained.

化合物（Ｃ−５）の製造
化合物（Ｃ−２）の合成と同じ手順に従って、化合物（Ｃ−５）（６ｇ、１５．６８ｍｍｏｌ、５２．５０％）を得た。 Preparation of Compound (C-5) According to the same procedure as the synthesis of Compound (C-2), Compound (C-5) (6 g, 15.68 mmol, 52.50%) was obtained.

化合物（Ｃ）の製造
化合物（Ｂ）の合成と同じ手順に従って、化合物（Ｃ）（５ｇ、８．１４ｍｍｏｌ、５１．９５％）を得た。 Production of Compound (C) According to the same procedure as the synthesis of compound (B), compound (C) (5 g, 8.14 mmol, 51.95%) was obtained.

［製造例４］化合物（Ｄ）の製造

Figure 2012520872
[Production Example 4] Production of compound (D)
Figure 2012520872

化合物（Ｄ−２）の製造
化合物（Ａ−１）の合成と同じ手順に従うが化合物（Ｄ−１）を用いて、化合物（Ｄ−２）（１１ｇ、３８．０２ｍｍｏｌ、８９．２２％）を得た。 Production of Compound (D-2) Following the same procedure as the synthesis of Compound (A-1), but using Compound (D-1), Compound (D-2) (11 g, 38.02 mmol, 89.22%) was obtained. Obtained.

化合物（Ｄ−３）の製造
化合物（Ａ−２）の合成と同じ手順に従って、化合物（Ｄ−３）（８ｇ、３１．０９ｍｍｏｌ、８１．７８％）を得た。 Production of Compound (D-3) According to the same procedure as the synthesis of compound (A-2), compound (D-3) (8 g, 31.09 mmol, 81.78%) was obtained.

化合物（Ｄ）の製造
化合物（Ｂ）の合成と同じ手順に従って、化合物（Ｄ）（６ｇ、１２．３０ｍｍｏｌ、３８．７０％）を得た。 Preparation of compound (D) According to the same procedure as the synthesis of compound (B), compound (D) (6 g, 12.30 mmol, 38.70%) was obtained.

［製造例５］化合物ＥおよびＦの製造

Figure 2012520872
[Production Example 5] Production of compounds E and F
Figure 2012520872

化合物（Ｅ−２）の製造
化合物（Ａ−１）の合成と同じ手順に従うが化合物（Ｅ−１）を用いて、化合物（Ｅ−２）（１５ｇ、５１．８５ｍｍｏｌ、８６．５１％）を得た。 Production of Compound (E-2) Following the same procedure as the synthesis of Compound (A-1), but using Compound (E-1), Compound (E-2) (15 g, 51.85 mmol, 86.51%) was prepared. Obtained.

化合物（Ｅ−３）の製造
化合物（Ａ−２）の合成と同じ手順に従って、化合物（Ｅ−３）（６ｇ、２３．３１ｍｍｏｌ、４４．９７％）を得た。 Production of Compound (E-3) According to the same procedure as the synthesis of compound (A-2), compound (E-3) (6 g, 23.31 mmol, 44.97%) was obtained.

化合物（Ｅ）の製造
化合物（Ｂ）の合成と同じ手順に従って、化合物（Ｅ）（５ｇ、１０．２５ｍｍｏｌ、４３．９９％）を得た。 Production of Compound (E) According to the same procedure as the synthesis of compound (B), compound (E) (5 g, 10.25 mmol, 43.99%) was obtained.

化合物（Ｆ−１）の製造
化合物（Ａ−２）の合成と同じ手順に従って、化合物（Ｆ−１）（３ｇ、１１．６５ｍｍｏｌ、２２．４８％）を得た。 Production of Compound (F-1) According to the same procedure as the synthesis of Compound (A-2), Compound (F-1) (3 g, 11.65 mmol, 22.48%) was obtained.

化合物（Ｆ）の製造
化合物（Ｂ）の合成と同じ手順に従って、化合物（Ｆ）（３ｇ、６．１５ｍｍｏｌ、５２．８１％）を得た。 Production of Compound (F) According to the same procedure as the synthesis of compound (B), compound (F) (3 g, 6.15 mmol, 52.81%) was obtained.

［製造例６］化合物（Ｇ）および（Ｈ）の製造

Figure 2012520872
[Production Example 6] Production of compounds (G) and (H)
Figure 2012520872

化合物（Ｇ−１）の製造
カルバゾール（２０ｇ、１１９．６ｍｍｏｌ）、ヨードベンゼン（２０ｍＬ、１７９．４１ｍｍｏｌ）、銅（１１．４ｇ、１７９．４１ｍｍｏｌ）、Ｋ２ＣＯ３（４９ｇ、３５８．８ｍｍｏｌ）、１８−クラウン−６（２．５ｇ、９．５６ｍｍｏｌ）および１，２−ジクロロベンゼンの混合物を１９０℃で１２時間攪拌した。周囲温度まで冷却した後で、この反応混合物を減圧下で蒸留した。これに蒸留水を添加し、得られた混合物を酢酸エチルで抽出した。この抽出物を硫酸マグネシウムで乾燥させ、減圧下で蒸留した。カラムを通して精製して、化合物（Ｇ−１）（２２ｇ、９０．４２ｍｍｏｌ、７５．６０％）を得た。 Production of Compound (G-1) Carbazole (20 g, 119.6 mmol), iodobenzene (20 mL, 179.41 mmol), copper (11.4 g, 179.41 mmol), K 2 CO 3 (49 g, 358.8 mmol), A mixture of 18-crown-6 (2.5 g, 9.56 mmol) and 1,2-dichlorobenzene was stirred at 190 ° C. for 12 hours. After cooling to ambient temperature, the reaction mixture was distilled under reduced pressure. Distilled water was added thereto, and the resulting mixture was extracted with ethyl acetate. The extract was dried over magnesium sulfate and distilled under reduced pressure. Purification through a column gave compound (G-1) (22 g, 90.42 mmol, 75.60%).

化合物（Ｇ−２）の製造
化合物（Ａ−４）の合成と同じ手順に従って、化合物（Ｇ−２）（２５ｇ、７７．５９ｍｍｏｌ、８５．８１％）を得た。 Production of Compound (G-2) According to the same procedure as the synthesis of Compound (A-4), Compound (G-2) (25 g, 77.59 mmol, 85.81%) was obtained.

化合物（Ｇ−３）の製造
化合物（Ａ−５）の合成と同じ手順に従って、化合物（Ｇ−３）（１１ｇ、３８．３１ｍｍｏｌ、４９．３７％）を得た。 Production of Compound (G-3) According to the same procedure as the synthesis of compound (A-5), compound (G-3) (11 g, 38.31 mmol, 49.37%) was obtained.

化合物（Ｇ−４）の製造
化合物（Ａ−１）の合成と同じ手順に従って、化合物（Ｇ−４）（１２ｇ、３２．８４ｍｍｏｌ、８５．７２％）を得た。 Production of Compound (G-4) According to the same procedure as the synthesis of compound (A-1), compound (G-4) (12 g, 32.84 mmol, 85.72%) was obtained.

化合物（Ｇ−５）の製造
化合物（Ａ−２）の合成と同じ手順に従って、反応が４時間行われて、化合物（Ｇ−５）（６ｇ、１７．９９ｍｍｏｌ、５４．８０％）を得た。 Production of Compound (G-5) According to the same procedure as the synthesis of Compound (A-2), the reaction was performed for 4 hours to obtain Compound (G-5) (6 g, 17.99 mmol, 54.80%). .

化合物（Ｇ）の製造
化合物（Ｂ）の合成と同じ手順に従って、化合物（Ｇ）（７ｇ、１２．３９ｍｍｏｌ、６８．９１％）を得た。 Production of Compound (G) According to the same procedure as the synthesis of compound (B), compound (G) (7 g, 12.39 mmol, 68.91%) was obtained.

化合物（Ｈ−１）の製造
化合物（Ａ−２）の合成と同じ手順に従って、反応が４時間行われて化合物（Ｈ−１）（２ｇ、５．９９ｍｍｏｌ、１８．２６％）を得た。 Production of Compound (H-1) According to the same procedure as the synthesis of Compound (A-2), the reaction was performed for 4 hours to obtain Compound (H-1) (2 g, 5.99 mmol, 18.26%).

化合物（Ｈ）の製造
化合物（Ｂ）の合成と同じ手順に従って、化合物（Ｈ）（１．７ｇ、３．０１ｍｍｏｌ、５０．２６％）を得た。 Production of Compound (H) According to the same procedure as the synthesis of compound (B), compound (H) (1.7 g, 3.01 mmol, 50.26%) was obtained.

製造例１〜６の手順に従って、有機電界発光化合物（ＴＡ、ＴＢおよびＴＣ）が製造された。このようにして製造されたこれらの有機電界発光化合物の置換基（Ａｒ１、Ａｒ２）、並びにこれら化合物の１Ｈ ＮＭＲおよびＭＳ／ＦＡＢデータが表１および２に示される。 Organic electroluminescent compounds (TA, TB and TC) were produced according to the procedures of Production Examples 1-6. Tables 1 and 2 show the substituents (Ar 1 , Ar 2 ) of these organic electroluminescent compounds prepared in this way, and 1 H NMR and MS / FAB data of these compounds.

Figure 2012520872
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［実施例１〜１０］
本発明の有機電界発光化合物を使用したＯＬＥＤの製造
本発明の電界発光化合物を使用することによりＯＬＥＤ素子が製造された。
まず、ＯＬＥＤ用ガラス（サムスン−コーニングにより製造）から調製された透明電極ＩＴＯ薄膜（１５Ω／□）を、トリクロロエチレン、アセトン、エタノールおよび蒸留水を順に使用した超音波洗浄にかけ、イソプロパノール中に貯蔵し、その後使用した。
次に、真空蒸着装置の基体ホルダにＩＴＯ基体を取り付け、この真空蒸着装置のセル内に４，４’，４”−トリス（Ｎ，Ｎ−（２−ナフチル）−フェニルアミノ）トリフェニルアミン（２−ＴＮＡＴＡ）（この化学構造は以下に示される）を入れ、次いでチャンバー内を１０−６ｔｏｒｒの真空に至るまで通気させた。セルに電流を適用して、２−ＴＮＡＴＡを蒸発させ、それによりＩＴＯ基体上に６０ｎｍの厚みを有する正孔注入層の蒸着物を生じさせた。 [Examples 1 to 10]
Production of OLED using organic electroluminescent compound of the present invention An OLED element was produced by using the electroluminescent compound of the present invention.
First, the transparent electrode ITO thin film (15Ω / □) prepared from the glass for OLED (manufactured by Samsung-Corning) was subjected to ultrasonic cleaning using trichlorethylene, acetone, ethanol and distilled water in order, and stored in isopropanol. Then used.
Next, an ITO substrate is attached to the substrate holder of the vacuum deposition apparatus, and 4,4 ′, 4 ″ -tris (N, N- (2-naphthyl) -phenylamino) triphenylamine ( 2-TNATA) (this chemical structure is shown below) and then vented the chamber to a vacuum of 10 −6 torr, applying an electric current to the cell to evaporate 2-TNATA, Produced a deposit of a hole injection layer having a thickness of 60 nm on the ITO substrate.

次いで、真空蒸着装置の他のセルに、Ｎ，Ｎ’−ビス（α−ナフチル）−Ｎ，Ｎ’−ジフェニル−４，４’−ジアミン（ＮＰＢ）を入れ、このセルに電流を適用してＮＰＢを蒸発させ、それにより正孔注入層上に２０ｎｍの厚みの正孔輸送層の蒸着物を生じさせた。   Next, N, N′-bis (α-naphthyl) -N, N′-diphenyl-4,4′-diamine (NPB) is placed in another cell of the vacuum evaporation apparatus, and current is applied to this cell. NPB was evaporated, thereby producing a 20 nm thick hole transport layer deposit on the hole injection layer.

Figure 2012520872
Figure 2012520872

前記真空蒸着装置の一方のセルに、１０−６ｔｏｒｒでの真空昇華で精製された本発明の化合物（例えば、化合物ＴＡ８−Ｈ４−Ｈ２）を、他方のセルには電界発光ドーパント（例えば、化合物（ｐｉｑ）２Ｉｒ（ａｃａｃ））をそれぞれ入れた。この２種の材料は異なる速度で蒸発させられ、４〜１０モル％の濃度でのドーピングを行い、それにより、正孔輸送層上に３０ｎｍの厚さを有する電界発光層を蒸着させた。 The compound of the present invention (for example, compound TA8-H4-H2) purified by vacuum sublimation at 10 −6 torr is applied to one cell of the vacuum deposition apparatus, and the electroluminescent dopant (for example, compound to the other cell). (Piq) 2 Ir (acac)) was added. The two materials were evaporated at different rates and doped at a concentration of 4-10 mol%, thereby depositing an electroluminescent layer having a thickness of 30 nm on the hole transport layer.

Figure 2012520872
Figure 2012520872

次いで、電子輸送層としてトリス（８−ヒドロキシキノリン）アルミニウム（ＩＩＩ）（Ａｌｑ）（この構造は以下に示される）を２０ｎｍの厚みで蒸着させ、そして電子注入層として、リチウムキノラート（Ｌｉｑ）を１〜２ｎｍの厚みで蒸着させた。その後、別の真空蒸着装置を使用して、１５０ｎｍの厚みを有するＡｌ陰極を蒸着させて、ＯＬＥＤを製造した。   Next, tris (8-hydroxyquinoline) aluminum (III) (Alq) (this structure is shown below) is deposited as an electron transport layer in a thickness of 20 nm, and lithium quinolate (Liq) is used as an electron injection layer. Vapor deposition was performed with a thickness of 1 to 2 nm. Thereafter, an Al cathode having a thickness of 150 nm was vapor-deposited using another vacuum vapor deposition apparatus to produce an OLED.

Figure 2012520872
Figure 2012520872

［実施例１１〜２０］
本発明の電界発光化合物を使用することによるＯＬＥＤの製造
実施例１〜１０のＯＬＥＤについてのと同じ手順に従うが、ホスト材料として本発明の化合物（例えば、化合物ＴＡ４−Ｈ４−Ｈ４）を使用し、かつ電界発光ドーパントとして以下の化学式で表される有機イリジウム錯体（Ｉｒ（ｐｐｙ）３）を使用して、ＯＬＥＤが製造された。
ＯＬＥＤを製造するために使用されたそれぞれ材料は１０−６ｔｏｒｒでの真空昇華によって精製された後で電界発光材料として使用された。 [Examples 11 to 20]
Preparation of OLEDs by using the electroluminescent compounds of the invention The same procedure is followed as for the OLEDs of Examples 1-10, but using the compounds of the invention (e.g. compounds TA4-H4-H4) as host material, An OLED was manufactured using an organic iridium complex (Ir (ppy) 3 ) represented by the following chemical formula as an electroluminescent dopant.
Each material used to manufacture the OLED was used as an electroluminescent material after being purified by vacuum sublimation at 10 −6 torr.

Figure 2012520872
Figure 2012520872

［比較例１および２］
従来の電界発光材料を使用することによるＯＬＥＤの製造
実施例１および１１に記載されるのと同じ手順に従うが、真空蒸着装置の他方のセルに、ホスト材料として本発明の電界発光化合物の代わりに、ビス（２−メチル−８−キノリナト）（ｐ−フェニルフェノラト）アルミニウム（ＩＩＩ）（ＢＡｌｑ）を入れて、ＯＬＥＤが製造された。 [Comparative Examples 1 and 2]
Production of OLEDs by using conventional electroluminescent materials The same procedure as described in Examples 1 and 11 is followed, but in the other cell of the vacuum deposition apparatus, instead of the electroluminescent compound of the invention as a host material. Bis (2-methyl-8-quinolinato) (p-phenylphenolato) aluminum (III) (BAlq) was added to produce an OLED.

Figure 2012520872
Figure 2012520872

実施例１〜１０および実施例１１〜２０から製造されたＯＬＥＤ（これらは本発明の有機電界発光化合物を含む）、並びに比較例１および２から製造されたＯＬＥＤ（これらは従来の電界発光化合物を含む）の駆動電圧および電力効率が１，０００ｃｄ／ｍ２で測定され、結果が表３および４に示される。 OLEDs made from Examples 1-10 and Examples 11-20 (which contain the organic electroluminescent compounds of the present invention), and OLEDs made from Comparative Examples 1 and 2 (these are conventional electroluminescent compounds) Drive voltage and power efficiency were measured at 1,000 cd / m 2 and the results are shown in Tables 3 and 4.

表３および表４から認められうるように、本発明によって開発された有機電界発光化合物は素子性能の点で従来の材料と比較して優れた特性を示した。   As can be seen from Tables 3 and 4, the organic electroluminescent compound developed according to the present invention exhibited superior characteristics compared to conventional materials in terms of device performance.

Figure 2012520872
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表３から認められうるように、本発明によって開発された化合物は従来の材料と比較して発光特性の点でより優れた特性を示した。本発明に従って製造された素子は従来の材料を用いて製造された比較例１の素子と比較して優れた電流特性を示し、それにより、１Ｖ以上低い駆動電圧を提供した。それらは、著しく向上した発光特性のせいで、比較例１の素子と比較して少なくとも１．４倍高い電流効率特性も示した。   As can be seen from Table 3, the compounds developed according to the present invention exhibited superior properties in terms of luminescent properties compared to conventional materials. The device manufactured according to the present invention exhibited excellent current characteristics as compared with the device of Comparative Example 1 manufactured using a conventional material, thereby providing a driving voltage lower by 1V or more. They also exhibited current efficiency characteristics that were at least 1.4 times higher than the device of Comparative Example 1 due to significantly improved emission characteristics.

表４から認められうるように、本発明によって開発された化合物が緑色電界発光のためのホストとして使用された場合、この素子はその優れた発光特性のせいで、比較例２の素子と比べて少なくとも１．６倍のかなり高い電力効率を示した。優れた発光特性は従来の材料と比較して確認された。特に、実施例１４の素子は比較例１の素子と比べて２．７Ｖ低い電圧で駆動され、実施例１７の素子は１０００ｃｄ／ｍ２で１５．９ ｌｍ／Ｗの電力効率および５．５Ｖの駆動電圧を示した。 As can be seen from Table 4, when the compound developed according to the present invention is used as a host for green electroluminescence, this device is superior to the device of Comparative Example 2 because of its excellent emission characteristics. It showed a fairly high power efficiency of at least 1.6 times. Excellent light emission characteristics were confirmed in comparison with conventional materials. In particular, the device of Example 14 is driven at a voltage 2.7 V lower than that of the device of Comparative Example 1, and the device of Example 17 has a power efficiency of 15.9 lm / W at 1000 cd / m 2 and 5.5 V. The driving voltage is shown.

よって、赤色もしくは緑色光を発光させるためのホスト材料として本発明に従う電界発光化合物を使用する素子は優れた発光特性を示すと共に、駆動電圧を低くし、その結果、特に緑色光を発光するための素子は５．１〜７．７ ｌｍ／Ｗの出力効率の増大を誘起し、結果的に電力消費の改良をもたらす。   Therefore, an element using the electroluminescent compound according to the present invention as a host material for emitting red or green light exhibits excellent emission characteristics and lowers the driving voltage, and as a result, particularly for emitting green light. The device induces an increase in output efficiency of 5.1-7.7 lm / W, resulting in improved power consumption.

Claims (10)

化学式１〜５のいずれかで表される有機電界発光化合物：
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 式中、ＸおよびＹは独立してＮ（Ａｒ１）、ＯおよびＳから選択され、Ａｒ１は互いに異なっていてもよく、並びに２以上のＡｒ１基が存在する場合にはＡｒ１はＡｒ１もしくはＡｒ２として表されることができ；
Ｚ１〜Ｚ８は独立してＣ（Ａｒ３）およびＮから選択され、Ａｒ３は互いに異なっていてもよく、並びに隣り合うＡｒ３基は一緒に結合して環を形成していてもよく；
Ａｒ１およびＡｒ２は独立して（Ｃ１−Ｃ６０）アルキル、（Ｃ３−Ｃ６０）シクロアルキル、Ｎ、Ｏ、Ｓ、ＳｉおよびＰから選択される１以上のヘテロ原子を含む５員もしくは６員のヘテロシクロアルキル、（Ｃ７−Ｃ６０）ビシクロアルキル、アダマンチル、（Ｃ２−Ｃ６０）アルケニル、（Ｃ２−Ｃ６０）アルキニル、（Ｃ６−Ｃ６０）アリールおよび（Ｃ３−Ｃ６０）ヘテロアリールから選択され；
Ａｒ３は独立して水素、（Ｃ１−Ｃ６０）アルキル、ハロゲン、シアノ、（Ｃ３−Ｃ６０）シクロアルキル、Ｎ、Ｏ、Ｓ、ＳｉおよびＰから選択される１以上のヘテロ原子を含む５員もしくは６員のヘテロシクロアルキル、（Ｃ７−Ｃ６０）ビシクロアルキル、アダマンチル、（Ｃ２−Ｃ６０）アルケニル、（Ｃ２−Ｃ６０）アルキニル、（Ｃ６−Ｃ６０）アリール、（Ｃ１−Ｃ６０）アルコキシ、（Ｃ６−Ｃ６０）アリールオキシ、（Ｃ３−Ｃ６０）ヘテロアリール、（Ｃ６−Ｃ６０）アリールチオ、（Ｃ１−Ｃ６０）アルキルチオ、モノもしくはジ（Ｃ１−Ｃ３０）アルキルアミノ、モノもしくはジ（Ｃ６−Ｃ３０）アリールアミノ、トリ（Ｃ１−Ｃ３０）アルキルシリル、ジ（Ｃ１−Ｃ３０）アルキル（Ｃ６−Ｃ３０）アリールシリル、トリ（Ｃ６−Ｃ３０）アリールシリル、モノもしくはジ（Ｃ６−Ｃ３０）アリールボラニル、モノもしくはジ（Ｃ１−Ｃ６０）アルキルボラニル、ニトロおよびヒドロキシルから選択され；並びに
Ａｒ１〜Ａｒ３のアルキル、シクロアルキル、ヘテロシクロアルキル、ビシクロアルキル、アダマンチル、アルケニル、アルキニル、アリール、アルコキシ、アリールオキシ、ヘテロアリール、アリールチオ、アルキルチオ、アルキルアミノ、アリールアミノ、トリアルキルシリル、ジアルキルアリールシリル、トリアリールシリル、アリールボラニルもしくはアルキルボラニルは、（Ｃ１−Ｃ６０）アルキル、ハロゲン、シアノ、（Ｃ３−Ｃ６０）シクロアルキル、Ｎ、Ｏ、Ｓ、ＳｉおよびＰから選択される１以上のヘテロ原子を含む５員もしくは６員のヘテロシクロアルキル、（Ｃ７−Ｃ６０）ビシクロアルキル、アダマンチル、（Ｃ２−Ｃ６０）アルケニル、（Ｃ２−Ｃ６０）アルキニル、（Ｃ６−Ｃ６０）アリール、（Ｃ１−Ｃ６０）アルコキシ、（Ｃ６−Ｃ６０）アリールオキシ、Ｐ（＝Ｏ）ＲａＲｂで置換された（Ｃ６−Ｃ６０）アリール［ＲａおよびＲｂは独立して（Ｃ１−Ｃ６０）アルキルもしくは（Ｃ６−Ｃ６０）アリールを表す］、（Ｃ３−Ｃ６０）ヘテロアリール、（Ｃ６−Ｃ６０）アリールで置換された（Ｃ３−Ｃ６０）ヘテロアリール、（Ｃ１−Ｃ６０）アルキルで置換された（Ｃ３−Ｃ６０）ヘテロアリール、（Ｃ６−Ｃ６０）アリール（Ｃ１−Ｃ６０）アルキル、（Ｃ６−Ｃ６０）アリールチオ、（Ｃ１−Ｃ６０）アルキルチオ、モノもしくはジ（Ｃ１−Ｃ３０）アルキルアミノ、モノもしくはジ（Ｃ６−Ｃ３０）アリールアミノ、トリ（Ｃ１−Ｃ３０）アルキルシリル、ジ（Ｃ１−Ｃ３０）アルキル（Ｃ６−Ｃ３０）アリールシリル、トリ（Ｃ６−Ｃ３０）アリールシリル、モノもしくはジ（Ｃ６−Ｃ３０）アリールボラニル、モノもしくはジ（Ｃ１−Ｃ６０）アルキルボラニル、ニトロおよびヒドロキシルからなる群から選択される１種以上の置換基によってさらに置換されていてよく、
ただし、ＸおよびＹの双方がＮ（Ａｒ１）であり、かつＺ１〜Ｚ８の全てがＣ（Ａｒ３）である場合を除く。 Organic electroluminescent compound represented by any one of chemical formulas 1 to 5:
Figure 2012520872
Figure 2012520872
Figure 2012520872
Figure 2012520872
Figure 2012520872
 Wherein, X and Y are independently N (Ar 1), is selected from O and S, Ar 1 may be different from each other, and Ar 1 in the case where two or more Ar 1 groups are present Ar Can be represented as 1 or Ar 2 ;
Z 1 to Z 8 are independently selected from C (Ar 3 ) and N, Ar 3 may be different from each other, and adjacent Ar 3 groups may be bonded together to form a ring. ;
Ar 1 and Ar 2 are independently 5- or 6-membered containing one or more heteroatoms selected from (C1-C60) alkyl, (C3-C60) cycloalkyl, N, O, S, Si and P Selected from heterocycloalkyl, (C7-C60) bicycloalkyl, adamantyl, (C2-C60) alkenyl, (C2-C60) alkynyl, (C6-C60) aryl and (C3-C60) heteroaryl;
Ar 3 is a 5-membered or independently containing one or more heteroatoms selected from hydrogen, (C1-C60) alkyl, halogen, cyano, (C3-C60) cycloalkyl, N, O, S, Si and P 6-membered heterocycloalkyl, (C7-C60) bicycloalkyl, adamantyl, (C2-C60) alkenyl, (C2-C60) alkynyl, (C6-C60) aryl, (C1-C60) alkoxy, (C6-C60) Aryloxy, (C3-C60) heteroaryl, (C6-C60) arylthio, (C1-C60) alkylthio, mono- or di (C1-C30) alkylamino, mono- or di (C6-C30) arylamino, tri (C1 -C30) alkylsilyl, di (C1-C30) alkyl (C6-C30) arylsilyl , Tri (C6-C30) arylsilyl, mono or di (C6-C30) arylboranyl, mono or di (C1-C60) alkylboranyl, nitro and hydroxyl; and Ar 1 -Ar 3 alkyl; Cycloalkyl, heterocycloalkyl, bicycloalkyl, adamantyl, alkenyl, alkynyl, aryl, alkoxy, aryloxy, heteroaryl, arylthio, alkylthio, alkylamino, arylamino, trialkylsilyl, dialkylarylsilyl, triarylsilyl, arylbora Nyl or alkylboranyl is a 5-membered containing one or more heteroatoms selected from (C1-C60) alkyl, halogen, cyano, (C3-C60) cycloalkyl, N, O, S, Si and P Or 6-membered heterocycloalkyl, (C7-C60) bicycloalkyl, adamantyl, (C2-C60) alkenyl, (C2-C60) alkynyl, (C6-C60) aryl, (C1-C60) alkoxy, (C6-C60) ) Aryloxy, (C6-C60) aryl substituted with P (= O) R a R b [R a and R b independently represent (C1-C60) alkyl or (C6-C60) aryl], (C3-C60) heteroaryl, (C3-C60) heteroaryl substituted with (C6-C60) aryl, (C1-C60) heteroaryl substituted with (C1-C60) alkyl, (C6-C60) aryl (C1-C60) alkyl, (C6-C60) arylthio, (C1-C60) alkylthio, mono or (C1-C30) alkylamino, mono- or di (C6-C30) arylamino, tri (C1-C30) alkylsilyl, di (C1-C30) alkyl (C6-C30) arylsilyl, tri (C6-C30) aryl May be further substituted with one or more substituents selected from the group consisting of silyl, mono or di (C6-C30) arylboranyl, mono or di (C1-C60) alkylboranyl, nitro and hydroxyl;
However, the case where both X and Y are N (Ar 1 ) and all of Z 1 to Z 8 are C (Ar 3 ) is excluded. 下記化合物から選択される請求項１に記載の有機電界発光化合物：
Figure 2012520872
Figure 2012520872
Figure 2012520872
Figure 2012520872
 式中、Ａｒ１およびＡｒ２は請求項１におけるように定義される。 The organic electroluminescent compound of claim 1 selected from the following compounds:
Figure 2012520872
Figure 2012520872
Figure 2012520872
Figure 2012520872
 Wherein Ar 1 and Ar 2 are defined as in claim 1. 下記化合物から選択される請求項１に記載の有機電界発光化合物：
Figure 2012520872
Figure 2012520872
 式中、Ａｒ１およびＡｒ２は請求項１におけるように定義される。 The organic electroluminescent compound of claim 1 selected from the following compounds:
Figure 2012520872
Figure 2012520872
 Wherein Ar 1 and Ar 2 are defined as in claim 1. 下記化合物から選択される請求項１に記載の有機電界発光化合物：
Figure 2012520872
 式中、Ａｒ１は請求項１におけるように定義される。 The organic electroluminescent compound of claim 1 selected from the following compounds:
Figure 2012520872
 Wherein Ar 1 is defined as in claim 1. 請求項１〜４のいずれか１項に記載の有機電界発光化合物を含む有機電界発光素子。   The organic electroluminescent element containing the organic electroluminescent compound of any one of Claims 1-4. 第１の電極；第２の電極；並びに、第１の電極と第２の電極との間に設けられた１以上の有機層；を含む有機電界発光素子であって、前記有機層が請求項１〜４のいずれか１項に記載の有機電界発光化合物の１種以上と、１種以上のリン光ドーパントとを含む、請求項５に記載の有機電界発光素子。   An organic electroluminescent device comprising: a first electrode; a second electrode; and one or more organic layers provided between the first electrode and the second electrode, wherein the organic layer is claimed. The organic electroluminescent element of Claim 5 containing 1 or more types of the organic electroluminescent compound of any one of 1-4, and 1 or more types of phosphorescence dopants. 有機層が、アリールアミン化合物およびスチリルアリールアミン化合物からなる群から選択される１種以上のアミン化合物をさらに含む、請求項６に記載の有機電界発光素子。   The organic electroluminescent element according to claim 6, wherein the organic layer further comprises one or more amine compounds selected from the group consisting of arylamine compounds and styrylarylamine compounds. 有機層が、第１族、第２族、第４周期および第５周期遷移金属、ランタニド金属並びにｄ−遷移元素、またはこれらから形成される複合体の有機金属からなる群から選択される１種以上の金属をさらに含む、請求項６に記載の有機電界発光素子。   The organic layer is one selected from the group consisting of Group 1, Group 2, Group 4 and Group 5 transition metals, lanthanide metals and d-transition elements, or complex organometallics formed therefrom. The organic electroluminescent element according to claim 6, further comprising the above metal. 有機層が電界発光層および電荷発生層を含む、請求項６に記載の有機電界発光素子。   The organic electroluminescent element according to claim 6, wherein the organic layer includes an electroluminescent layer and a charge generation layer. 有機電界発光素子が白色光を発光する有機電界発光素子であり、有機層が青色、赤色もしくは緑色の光を発光する１以上の有機電界発光層を同時に含む、請求項６に記載の有機電界発光素子。   The organic electroluminescence device according to claim 6, wherein the organic electroluminescence device is an organic electroluminescence device that emits white light, and the organic layer simultaneously includes one or more organic electroluminescence layers that emit blue, red, or green light. element.
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