JP5580733B2 - 新規なアントラセン系化合物及びこれを利用した有機発光素子 - Google Patents
新規なアントラセン系化合物及びこれを利用した有機発光素子 Download PDFInfo
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- JP5580733B2 JP5580733B2 JP2010507325A JP2010507325A JP5580733B2 JP 5580733 B2 JP5580733 B2 JP 5580733B2 JP 2010507325 A JP2010507325 A JP 2010507325A JP 2010507325 A JP2010507325 A JP 2010507325A JP 5580733 B2 JP5580733 B2 JP 5580733B2
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- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/0803—Compounds with Si-C or Si-Si linkages
- C07F7/081—Compounds with Si-C or Si-Si linkages comprising at least one atom selected from the elements N, O, halogen, S, Se or Te
- C07F7/0812—Compounds with Si-C or Si-Si linkages comprising at least one atom selected from the elements N, O, halogen, S, Se or Te comprising a heterocyclic ring
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
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Description
また、本発明は、前記有機発光素子を含むことを特徴とするディスプレイ装置を提供する。
本発明の化学式1〜6のうちのいずれか一つで示されるアントラセン系化合物は青色発光特性に優れると共に、ホール伝達特性及び電子伝達特性に優れて有機発光素子に低電圧、高輝度、長寿命の特性を付与することができる。
前記アリール基の炭素数は、好ましくは6〜50である。
(1)化合物<1a>2−ブロモアントラキノン(2−Bromoanthraquinone)の合成
臭化銅(CuBr2)18g(81mmol)、tert−ブチルナイトライト(tert−Butyl nitrite12ml(101mmol)を65℃のアセトニトリル(acetonitrile)で分散させ、激しく撹拌しながら、2−アミノアントラキノン(2−aminoanthraquinone)15g(67mmol)を添加した。窒素ガスが完全に出なくなるまで撹拌して、室温まで冷却し、20%塩酸(1L)を加えた後、ジクロロメタン(dichloromethane)で抽出した。有機層を無水硫酸マグネシウムで乾燥させ、溶媒を減圧除去した。シリカゲルカラムクロマトグラフィーで精製し、下記化合物<1a>14g(75%)を得た。
1−ブロモナフタレン(1−Bromonaphthalene)10.5ml(75.23mmol)を無水テトラヒドロフラン(Tetrahydrofuran)100mlに溶かし、撹拌しながら−78℃に維持した後、2.5M N−BuLi 30ml(75.23mmol)を徐々に滴下した。30分後、化合物<1a>9g(31.34mmol)を入れて室温で撹拌した。2時間後、NH4Cl溶液で反応混合物を洗浄し、塩化メチレンで抽出し、無水硫酸マグネシウムで水分を乾燥させ、溶媒を減圧除去した。メタノールで洗浄した後、下記化合物<1b>7.7g(45%)を得た。
化合物<1b>7.7g(14.18mmol)を氷酢酸(glacial acetic acid)(100ml)に溶かして撹拌し、ヨウ化カリウム(KI)23.4g(141.8mmol)、次亜リン酸ナトリウム(NaPO2H2)12.4g(141.8mmol)を加えた後、還流した。反応物が溶け始め、約2時間後、白色の沈殿が生じた。反応が完了した後、氷酢酸(glacial acetic acid)をろ過して除去し、沈殿物をエタノールで撹拌し、水(H2O)を添加して形成される沈殿物をろ過して、白色固体の下記化合物<1c>6.6g(92%)を得た。青色発光は418nmであった。
化合物<1c>6.6g(12.9mmol)を無水テトラヒドロフラン(Tetrahydrofuran)100mlに溶かし、撹拌しながら−78℃に維持した後、2.5M N−BuLi 6.2ml(15.55mmol)を徐々に滴下した。30分後、トリフェニルシリルクロライド(Triphenylsilyl chloride)4.6g(15.55mmol)を入れて室温で撹拌した。2時間後、白色の沈殿が生じ始め、反応が完了した後、沈殿物をろ過して、白色固体の化合物<1−1>(化学式1−1)5.3g(60%)を得た。
(1)化合物<1−2>の合成
前記実施例1で1−ブロモナフタレンの代わりに2−ブロモナフタレン15.6gを使用したことを除いては、実施例1の操作を繰り返して化合物<1−2>(化学式1−2)5.56g(63%)を得た。
(1)化合物<2a>の合成
化合物<1a>5.77g(20.1mmol)、塩化スズ(SnCl2.H2O)13.90g(61.5mmol)、12M塩酸水溶液15mlを酢酸90mlに溶かした後、還流した。5時間後に冷却した後、水を入れて希釈し、炭酸水素ナトリウム水溶液で中和させた。塩化メチレンで抽出後、無水硫酸マグネシウムで水分を乾燥させ、溶媒を減圧除去して得られた固体をカラムクロマトグラフィで精製して化合物<2a>2.18g(収率38%)を得た。
2−ブロモナフタレン(2−Bromonaphthalene)1.8g(8.79mmol)を無水テトラヒドロフラン(Tetrahydrofuran anhydride)100mlに溶かし、撹拌しながら−78℃に維持した後、2.5M N−BuLi 3.5ml(8.79mmol)を徐々に滴下した。30分後、化合物<2a>2g(7.32mmol)を入れて室温で撹拌した。12時間後、6M HCl溶液を入れて、撹拌する。塩化メチレンで抽出後、無水硫酸マグネシウムで水分を乾燥させ、溶媒を減圧除去した。その後エタノールで洗浄し、下記化合物<2b>1.68g(60%)を得た。
化合物<2b>1.68g(4.39mmol)を無水テトラヒドロフラン(Tetrahydrofuran)20mlに溶かし、撹拌しながら−78℃に維持した後、2.5M N−BuLi 1.8ml(4.39mmol)を徐々に滴下した。30分後、トリフェニルシリルクロライド(Triphenylsilyl chloride)1.6g(5.27mmol)を加えて室温で撹拌した。2時間後、白色の沈殿が生じ始め、反応が完了した後、沈殿物をろ過して、白色の固体化合物<2c>1.48g(60%)を得た。
窒素気流下で化合物<2c>1.48g(2.63mmol)を塩化メチレン50mLに溶かし、5℃以下で塩化メチレン25mLに溶かしたNBS(N-Bromosuccinimide) 0.6g(3.42mmol)を加えた。30分程度撹拌した後、常温で再び撹拌した。反応の進行程度をTLCで確認し、反応がそれ以上進行しなくなったら、反応混合物にチオ硫酸ナトリウム(sodium thiosulfate)飽和水溶液20mLを加えた。有機溶媒層を別に集めてMgSO4で脱水した後、減圧蒸留した。得られた反応物をシリカゲルで充填したカラムで塩化メチレンとn−ヘキサンの混合溶媒を移動相にして分離することによって、淡黄色の結晶化合物<2d>1.06g(63%)を得た。
窒素気流下で4−ビフェニルボロン酸(biphenyl boronic acid)0.39g(1.98mmol)と化合物<2d>1.0g(1.65mmol)、Pd(PPh3)4、2M K2CO3水溶液、トルエン 50mLを激しく撹拌しながら、還流させた。12時間後、10mLの水を添加して、生成した沈殿物をろ過して、白色の固体化合物<2−1>(化学式2−1)8g(68%)を得た。
(1)化合物<2−42>の合成
前記実施例3で4−ビフェニルボロン酸(biphenyl boronic acid)の代わりに3−(ナフタレン−1−イル)フェニルボロン酸を使用したことを除いては、実施例3の操作を繰り返して化合物<2−42>(化学式2−42)1.2g(63%)を得た。
(1)化合物<1−3>の合成
前記実施例1で2−アミノアントラキノンの代わりに2,6−ジアミノアントラキノンを使用したことを除いては、実施例1の操作を繰り返して化合物<1−3>(化学式1−3)1.2g(42%)を得た。
(1)化合物<1−4>の合成
前記実施例2で2−アミノアントラキノンの代わりに2,6−ジアミノアントラキノンを使用したことを除いては、実施例2の操作を繰り返して化合物<1−4>(化学式1−4)1.42g(50%)を得た。
(1)化合物<2−7>の合成
前記実施例3で化合物<1a>の代わりに2,6−ジブロモアントラキノンを使用したことを除いては、実施例3の操作を繰り返して化合物<2−7>(化学式2−7)0.8g(35%)を得た。
(1)化合物<2−93>の合成
前記実施例4で化合物<1a>の代わりに2,6−ジブロモアントラキノンを使用したことを除いては、実施例4の操作を繰り返して化合物<2−93>(化学式2−93)0.5g(30%)を得た。
(1)化合物<6a>合成
窒素気流下で2−ブロモナフタレン(2−Bromonaphthalene)20g(96.6mmol)をテトラヒドロフラン(THF) 500mLに溶かし、−78℃で30分間冷却した。n−BuLi(2.5M)39mLを−78℃で30分間徐々に滴下した後、さらに30分間撹拌した。反応物をTHF 300mLに溶かしたアンスロン(anthrone)16.5g(85mmol)に15分間で滴下した後、20分後に常温で撹拌した。反応の進行程度はTLCで確認し、反応がそれ以上進行しなくなったら、反応混合液に6M HCl 300mLを加えた後、エチルアセテート(ethlyl acetate)200mLで3回抽出した。これらを混合した後、MgSO4で脱水した後、減圧蒸留した。得られた反応物をエタノールで再結晶して、淡緑色の結晶である9−ナフタレン−2−イル アントラセン(9−Naphthalene−2−yl anthracene)16.48g(63.6%)を得た。
窒素気流下で9−ナフタレン−2−イルアントラセン(9−Naphthalene−2−yl anthracene)16.4g(54.0mmol)を塩化メチレン(methylene chloride)1050mLに溶かし、5℃以下で塩化メチレン550mLに溶かしたNBS(N-Bromosuccinimide) 12.45g(70mmol)を徐々に加えた。30分程度撹拌した後、常温で撹拌した。反応の進行程度はTLCで確認し、反応がそれ以上進行しなくなったら、反応混合物に飽和チオ硫酸ナトリウム(saturated sodium thiosulfate)400mLを加えた後、有機溶媒層を別に集めてMgSO4で脱水し、減圧蒸留した。得られた反応物をシリカゲルで充填したカラムで塩化メチレンとn−ヘキサンの混合溶媒を移動相にして分離することによって淡黄色の結晶9−ブロモ−10−ナフタレン−2−イル アントラセン(9−Bromo−10−naphthalene−2−yl anthracene)12g(58%)を得た。
窒素気流下で9−ブロモ−10−ナフタレン−2−イル アントラセン(9−Bromo−10−naphthalene−2−yl anthracene)12g(31.3mmol)をTHF 160mLに溶かした後、−78℃で30分間冷却させた。n−BuLi(2.5M)13.8mLを−78℃で30分間徐々に滴下した後、30分間撹拌した。ホウ酸トリメチル(Trimethyl borate)4.2mL(37.6mmol)を15分間で滴下した後、20分後に常温で撹拌した。反応の進行程度はTLCで確認し、反応がそれ以上進行しなくなったら、反応混合液に2M HCl 100mLを加えた後、酢酸エチル(ethyl acetate)60mLで3回抽出した。これらを混合した後、MgSO4で脱水し、減圧蒸留した。得られた反応物をトルエンとn−ヘキサンで再結晶して、白色の結晶5.3g(49%)を得た。
化合物<6b>の代わりに1−ブロモ−4−(トリフルオロメチル)ベンゼンを使用したことを除いては、前記化合物<6c>の合成操作を繰り返して化合物<6d>8g(73%)を得た。
4−ビフェニルボロン酸(biphenyl boronic acid)の代わりに化合物<6d>、化合物<2d>の代わりに4−ブロモヨウ化ベンゼンを使用したことを除いては、実施例3〜5の操作を繰り返して化合物<6e>5.7g(63%)を得た。
4−ビフェニルボロン酸(biphenyl boronic acid)の代わりに化合物<6c>と化合物<2d>の代わりに化合物<6e>を使用したことを除いては、実施例3〜5の操作を繰り返して化合物<6−1>2.2g(57%)を得た。
前記実施例1〜9で製造した化合物をTHFに溶解して発光ピークを測定した。結果を図2(実施例1)、図3(実施例9)及び下記表1に示した。下記表1において単位はnmである。
前記実施例1〜9で製造した化合物をそれぞれ発光ホスト材料として使用して、図1のような構造の有機電界発光素子を作製した。まず、ガラス基板に形成した1500Å厚のITO層(アノード)の上に、650Å厚の正孔注入層(正孔注入層材料:HI−406(N1,N1−(ビフェニル−4,4'−ジイル)ビス(N1−(ナフタレン−1−イル)−N4,N4−ジフェニルベンゼン−1,4−ジアミン))、200Å厚の正孔輸送層(正孔輸送層材料:ビス(N−(1−ナフチル−n−フェニル))ベンジジン(α−NPB))、350Å厚のBD142がドーピングされた発光層(BD142:N6,N12−ビス(3,4−ジメチルフェニル)−N6,N12−ジメシチルクリセン−6,12−ジアミン)、200Å厚の電子輸送層(電子輸送層材料:ET4(6,6'−(3,4−ジメシチル−1,1−ジメチル−1H−シルオル−2,5−ジイル)ジ−2,2'−ビピリジン))及び1000/10Å厚のアルミニウム/LiFカソードを順次蒸着して、有機電界発光素子を作製した。この時、発光層に使用したドーパント BD142の量は、ホスト100質量部に対して7質量部とした。
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US20060159952A1 (en) * | 2005-01-14 | 2006-07-20 | Eastman Kodak Company | Mixed anthracene derivative host materials |
JP2006199595A (ja) * | 2005-01-18 | 2006-08-03 | Sony Corp | アントラセン誘導体、有機電界発光素子、および表示装置 |
US20060182994A1 (en) * | 2005-01-18 | 2006-08-17 | Yukinari Sakamoto | Anthracene derivative, organic electroluminescent device, and display unit |
TWI287568B (en) * | 2005-04-08 | 2007-10-01 | Au Optronics Corp | Silicon-contained anthracene compound for organic electroluminescent device |
US8298683B2 (en) * | 2005-09-15 | 2012-10-30 | Lg Chem, Ltd. | Organic compound and organic light emitting device using the same |
WO2007058172A1 (ja) * | 2005-11-17 | 2007-05-24 | Idemitsu Kosan Co., Ltd. | 有機エレクトロルミネッセンス素子 |
EP1971664B1 (en) * | 2006-01-13 | 2015-09-09 | LG Chem, Ltd. | Emitting materials and organic light emitting device using the same |
KR101320382B1 (ko) * | 2006-05-22 | 2013-10-29 | 삼성디스플레이 주식회사 | 유기 발광 화합물 및 이를 구비한 유기 발광 소자 |
GB2440367A (en) * | 2006-07-26 | 2008-01-30 | Oled T Ltd | Electroluminescent device |
KR100857026B1 (ko) * | 2007-03-28 | 2008-09-05 | (주)그라쎌 | 티아졸계 유기 발광 화합물 및 이를 포함하는 유기 발광소자 |
-
2008
- 2008-05-07 JP JP2010507325A patent/JP5580733B2/ja active Active
- 2008-05-07 WO PCT/KR2008/002568 patent/WO2008140208A1/en active Application Filing
- 2008-05-07 KR KR1020080042123A patent/KR101219316B1/ko active IP Right Grant
- 2008-05-07 US US12/598,493 patent/US20100133996A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
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KR20080099796A (ko) | 2008-11-13 |
KR101219316B1 (ko) | 2013-01-08 |
US20100133996A1 (en) | 2010-06-03 |
JP2010526134A (ja) | 2010-07-29 |
WO2008140208A1 (en) | 2008-11-20 |
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