JP6420889B2 - 化合物およびそれを用いた有機電子デバイス - Google Patents
化合物およびそれを用いた有機電子デバイス Download PDFInfo
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- JP6420889B2 JP6420889B2 JP2017232424A JP2017232424A JP6420889B2 JP 6420889 B2 JP6420889 B2 JP 6420889B2 JP 2017232424 A JP2017232424 A JP 2017232424A JP 2017232424 A JP2017232424 A JP 2017232424A JP 6420889 B2 JP6420889 B2 JP 6420889B2
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Description
第1の電極上に形成された正孔注入層;
正孔注入層上に形成された正孔輸送層;
正孔輸送層上に形成された発光層;
発光層上に形成された電子輸送層;
電子輸送層と第2の電極との間に形成された電子注入層。
新規化合物の調製に用いた中間体A1は以下の工程により合成した。中間体A1の合成経路をスキームA1に要約した。
四塩化炭素(CCl4)(出発材料の5倍)中の3−ブロモジベンゾ[a,d]シクロヘプテン−5−オン(86g、1.0当量)、N−ブロモスクシンイミド(NBS)(106g、2当量)、ベンジルペルオキシド(0.7g、0.01当量)の混合物を85℃に加熱した。反応の進行を高速液体クロマトグラフィ(HPLC)でモニターした。反応完了後、沈殿物を濾過により分離し、CH3OHで洗浄し、これを次いで再結晶で精製した。精製された生成物を濃縮乾固すると、白色の固体生成物が123gの量および収率92.3%で得られた。
得られた中間体A1−1(116.0g、1.0当量)およびフラン(1.5当量)をTHF(1.0M)に溶解し、反応物を0℃に冷却し、次いでカリウムtert−ブトキシド(K−OtBu)(87.8g、3.0当量)で処理した。反応物を0℃で1時間撹拌し、次いで室温でさらに12時間撹拌した。反応の完了後、DI水で反応をクエンチし、有機層を溶媒抽出操作によって回収し、硫酸ナトリウムで乾燥させた。有機層から溶媒を減圧下の蒸留により除去し、得られた残渣をシリカゲルカラムクロマトグラフィで精製した。精製した生成物を濃縮乾固して、淡黄色の固体生成物を収率60.3%で得た。
酢酸エチル(EA、2.0M)中の中間体A1−2(1.0当量)および5%Pd/C(0.025当量)の懸濁液を、水素バルーンによって提供される水素雰囲気(H2)下で3時間〜6時間撹拌した。得られた混合物をセライトのパッドで濾過し、EAで洗浄し、濾液を減圧下で濃縮して、黄色固体生成物100g(100%)を得た。
トルエン530ml中の中間体A1−3(53g、1.0当量)およびp−トルエンスルホン酸(PTSA)(2.0当量)を12時間加熱還流した。反応混合物を室温に冷却し、次いでNaHCO3の飽和水溶液でクエンチし、CH2Cl2で抽出した。有機層を水、ブライン(塩水)で洗浄し、続いて無水Na2SO4で乾燥させた。次に、得られた溶液を減圧下で濃縮し、溶離液としてCH2Cl2/ヘキサン1/1(v/v)を用いるシリカゲルカラムクロマトグラフィにより精製して、淡黄色の固体生成物を46.0gの量および91.5%の収率で得た。
新規化合物を調製するために使用される中間体A2は、出発材料3−ブロモジベンゾ[a,d]シクロヘプテン−5−オンを2−ブロモジベンゾ[a,d]シクロヘプテン−5−オン(CAS番号198707−82−3)に置き換えた以外は、工程1〜4を通して中間体A1と同様の方法で合成した。中間体A2の合成経路をスキームA2に要約した。すべての中間体を上記の方法に従って分析し、その結果を表1に列挙した。
新規化合物を調製するために使用される中間体A3は、出発材料3−ブロモジベンゾ[a,d]シクロヘプテン−5−オンを3,7−ジブロモジベンゾ[a,d]シクロヘプテン−5−オン(CAS番号226946−20−9)に置き換えた以外は、工程1〜4を通して中間体A1と同様の方法で合成した。中間体A3の合成経路をスキームA3に要約した。すべての中間体を上記のように分析し、その結果を表1に列挙した。
中間体A1〜A3に加えて、当業者は他の出発材料を採用し、スキームA1〜A3と同様の反応機構により他の所望の中間体を首尾よく合成することができる。中間体A1〜A3の適用可能な変更は、例えば、以下の中間体A4〜A15であってもよいが、これらに限定されない。
1−ブロモ−2−ヨードベンゼンおよびヘテロアリールボロン酸(反応体An)を反応させることにより中間体B1〜B6を合成した。中間体Bnの一般的な合成経路をスキームBに要約した。以下のスキームBにおいて、「反応体An」は、表2に列挙される反応体A1〜A6のいずれか1つなどであってもよく、「中間体Bn」は、中間体B1〜B6のいずれか1つであってもよい。
中間体B1〜B6に加えて、当業者は、1−ブロモ−2−ヨードベンゼン以外の任意のジハロベンゼンおよび反応体A1〜A6以外の任意のヘテロアリールボロン酸を採用して、スキームBと同様の反応機構を介して他の所望の中間体Bnを首尾良く合成することができる。中間体B1〜B6の適用可能な変更は、例えば以下のような中間体B7およびB8であってもよいが、これらに限定されない。
上述の中間体B1〜B8、特に中間体B1〜B6をさらに採用して中間体Cnを合成することができた。中間体Cnの一般的な合成経路をスキームC1に要約した。以下のスキームC1において、「中間体An」は、上述の中間体A1〜A15などのいずれか1つであってもよく、「中間体Bn」は、上述の中間体B1〜B8などのいずれか1つであってもよく、「中間体Cn」は、表3−1に記載の中間体C1〜C9などのいずれか1つであってもよい。中間体C1〜C9はそれぞれ以下の工程で合成した。
中間体Bn(1.0当量)を120mLの無水THF(0.4M)に溶解し、−78℃に冷却した。n−ブチルリチウム(n−BuLi)(2.5M,1.0当量)を上記冷却溶液にゆっくり加え、反応塊を1時間撹拌した。1時間撹拌した後、中間体An(0.7当量)を反応溶液に添加し、室温でさらに3時間攪拌した。反応完了後、飽和塩化アンモニウム溶液で反応をクエンチし、有機溶媒で抽出した。有機層を分離し、濃縮し、石油エーテルで再結晶して白色固体生成物を得た。
アルコール中間体(1.0当量)、酢酸(反応体に対してw/v=1/3)およびH2SO4(5滴)を混合し、混合物を110℃で6時間撹拌した。次いで、溶媒を減圧下で除去し、残渣をカラムクロマトグラフィで精製した。残留塊をトルエンで再結晶して白色固体生成物を得た。
中間体C1〜C9に加えて、当業者は、中間体A1〜A3以外の任意の中間体Anおよび/または中間体B1〜B6以外の任意の中間体Bnを採用して、スキームC1と同様の反応機構により他の所望の中間体Cnを首尾よく合成できる。中間体C1〜C9の適用可能な変更は、例えば、以下の中間体C10〜C33であってもよいが、これに限定されない。
中間体C34およびC35に加えて、当業者は、中間体C8、C9、C22〜C33などのチオフラン基を含む他の中間体Cnを採用して、スキームC2またはスキームC3と同様の反応機構によって他の所望の中間体Cnを合成することができる。中間体C34およびC35の適用可能な変更は、例えば、以下の中間体C36〜C46であり得るが、これらに限定されない。
上述の中間体Cnは、宮浦(Miyaura)ホウ素化反応を介して中間体Cn−Bにさらに変更することができた。「中間体Cn−B」は、そのブロモ基が(ピナコラト)ボロン基で置き換えられた中間体Cnから誘導された化合物を対象とした。中間体Cn−Bの合成経路をスキームC1−Bに要約した。中間体Cn−Bを以下の工程により合成した。
中間体Cn−Bに加えて、当業者は、上述の中間体Cnのいずれか1つを採用して宮浦ホウ素化反応を行い、以下のような他の所望の中間体Cn−Bを首尾良く合成することができる。
上述の中間体CnおよびCn−Bのそれぞれを種々の反応体と反応させて、種々の特許請求された新規化合物を合成することができた。特許請求された新規化合物の一般的な合成経路をスキームIに要約した。以下のスキームIにおいて、「反応体B」は表4に列挙された反応体B1〜B34のいずれか1つであってもよく、「中間体C」は上述の中間体CnおよびCn−Bなどのいずれか1つであってもよい。化合物はそれぞれ以下の工程で合成した。
化合物I〜XXVIIに加えて、当業者は、スキームIと同様の反応機構を介して、任意の中間体C、すなわち上述の中間体CnまたはCn−Bを任意の反応体Bnと反応させて、他の所望の特許請求された新規化合物を合成することができる。
ITO層を1500Åの厚さでコーティングしたガラス基板(ITO基板と略記)を、洗浄剤を溶解した蒸留水に入れ、超音波洗浄した。洗浄剤はFischer Co.の製品であり、蒸留水はフィルタ(Millipore Co.)で2回濾過した蒸留水であった。ITO層を30分間洗浄した後、蒸留水で2回10分間超音波洗浄した。洗浄終了後、ガラス基板をイソプロピルアルコール、アセトン、メタノール溶媒で超音波洗浄し、次いで乾燥させた後、プラズマ清浄装置に搬送した。次いで、基板を酸素プラズマで5分間清浄し、次いで真空蒸発器に移した。
赤色OLEDデバイスを調製するために、複数の有機層をそれぞれ、表7に列挙されるような順序に従ってITO基板上に堆積させ、赤色OLEDデバイスの有機層の材料および厚さもまた表7に列挙した。
緑色OLEDデバイスを調製するために、複数の有機層をそれぞれ、表8に列挙されるような順序に従ってITO基板上に堆積させ、緑色OLEDデバイスの有機層の材料および厚さもまた表8に列挙した。
表8:緑色OLEDデバイスにおける層のコーティング順序、材料および厚さ。
青色OLEDデバイスを調製するために、複数の有機層をそれぞれ、表9に列挙されるような順序に従ってITO基板上に堆積させ、青色OLEDデバイスの有機層の材料および厚さもまた表9に列挙した。
OLEDデバイスの性能を評価するために、赤色、緑色および青色OLEDデバイスを、光度計としてのPR650および電源としてのKeithley 2400によって測定した。色座標(x,y)は、CIE色度スケール(Commission Internationale de L’Eclairage、1931)に従って決定した。結果を表10に示した。青色および赤色OLEDデバイスについては、データを1000nitで収集した。緑色OLEDデバイスについては、データを3000nitで収集した。
Claims (8)
- 下記式(I)で表される化合物:
式中、X1およびX2はそれぞれ独立してC(Ra)であり、前記2つの(Ra)は同じであるかまたは異なり、前記2つの(Ra)は共に連結してアリール環を形成し;
式中、X3およびX4はそれぞれ独立してC(Rb)であり、前記2つの(Rb)は同じであるかまたは異なり、前記2つの(Rb)は共に連結して少なくとも1つのフラン基、少なくとも1つのチオフェン基または少なくとも1つのチオフェンS,S−ジオキシド基を含むヘテロアリール環を形成し;
式中、Z1〜Z12は、それぞれ独立して、水素原子、重水素原子、トリフルオロメチル基、ハロゲン基、シアノ基、ニトロ基、1〜40個の炭素原子を有するアルキル基、2〜40個の炭素原子を有するアルケニル基、2〜40個の炭素原子を有するアルキニル基、3〜60個の環炭素原子を有するシクロアルキル基、3〜60個の環炭素原子を有するヘテロシクロアルキル基、6〜60個の環炭素原子を有するアリール基、3〜60個の環炭素原子を有するヘテロアリール基、1〜40個の炭素原子を有するアルコキシ基、6〜60個の環炭素原子を有するアリールオキシ基、1〜40個の炭素原子を有するアルキルシリル基、6〜60個の環炭素原子を有するアリールシリル基、1〜40個の炭素原子を有するアルキルボロン基、6〜60個の環炭素原子を有するアリールボロン基、1〜40個の炭素原子を有するホスフィン基、および1〜40個の炭素原子を有するホスフィンオキシド基からなる群から選択される。 - 下記式(I−I)〜(I−XVIII)で表される、請求項1に記載の化合物:
式中、A1およびA2は、それぞれ独立してC(Rc)であり、前記2つの(Rc)は同じであるかまたは異なり、前記2つの(Rc)は共に連結して、X3およびX4から伸びるヘテロアリール環に含まれる芳香族構造を形成する。 - 前記ヘテロアリール環に含まれる前記芳香族構造は、置換または無置換ベンゼン構造、置換または無置換ナフタレン構造、置換または無置換アントラセン構造、置換または無置換フェナントレン構造、置換または無置換フルオレン構造、置換または無置換ピレン構造、置換または無置換ベンゾフェナントレン構造、置換または無置換ベンゾピレン構造、置換または無置換フルオランテン構造、および置換または無置換ベンゾフルオランテン構造からなる群から選択される、請求項2に記載の化合物。
- X1およびX2から伸びた前記アリール環は、置換または無置換ベンゼン環、置換または無置換ナフタレン環、置換または無置換アントラセン環、置換または無置換フェナントレン環、置換または無置換フルオレン環、置換または無置換ピレン環、置換または無置換ベンゾフェナントレン環、置換または無置換ベンゾピレン環、置換または無置換フルオランテン環、および置換または無置換ベンゾフルオランテン環からなる群から選択される、請求項1から3のいずれか一項に記載の化合物。
- Z1〜Z8の少なくとも1つは、以下からなる群から選択される、請求項1から4のいずれか一項に記載の化合物:
式中、R1〜R7は、それぞれ独立して、水素原子、重水素原子、トリフルオロメチル基、ハロゲン基、シアノ基、ニトロ基、1〜12個の炭素原子を有するアルキル基、2〜12個の炭素原子を有するアルケニル基、2〜12個の炭素原子を有するアルキニル基、3〜30個の環炭素原子を有するシクロアルキル基、3〜30個の環炭素原子を有するヘテロシクロアルキル基、6〜30個の環炭素原子を有するアリール基、3〜20個の環炭素原子を有するヘテロアリール基、1〜40個の炭素原子を有するアルコキシ基、6〜30個の環炭素原子を有するアリールオキシ基、1〜40個の炭素原子を有するアルキルシリル基、6〜30個の環炭素原子を有するアリールシリル基、1〜40個の炭素原子を有するアルキルボロン基、6〜30個の環炭素原子を有するアリールボロン基、1〜30個の炭素原子を有するホスフィン基、および1〜30個の炭素原子を有するホスフィンオキシド基からなる群から選択され;
式中、nは0〜4の正の整数であり、mは0〜3の正の整数であり、oは0〜3の正の整数であり、mとoとの合計は5以下である。 - Z2、Z3、Z6およびZ7の少なくとも1つは、以下からなる群から選択される、請求項1から4のいずれか一項に記載の化合物。
- 前記化合物は、以下からなる群から選択される、請求項1に記載の化合物。
- 第1の電極と、第2の電極と、前記第1の電極と前記第2の電極との間に配置された有機層とを含み、前記有機層は請求項1から7のいずれか一項に記載の化合物を含む有機電子デバイス。
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| US11183641B2 (en) * | 2018-06-05 | 2021-11-23 | Shanghai Nichem Fine Chemical Co., Ltd. | Composition for an organic electronic device and organic electronic device using the same |
| CN115403572A (zh) * | 2021-05-26 | 2022-11-29 | 彩丰精技股份有限公司 | 化合物及其有机电子装置 |
| KR20250083781A (ko) * | 2023-12-01 | 2025-06-10 | 솔루스첨단소재 주식회사 | 유기 화합물 및 이를 이용한 유기 전계 발광 소자 |
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| JP2009057300A (ja) * | 2007-08-30 | 2009-03-19 | Tokuyama Corp | クロメン化合物 |
| JP2010024149A (ja) * | 2008-07-16 | 2010-02-04 | Toyo Ink Mfg Co Ltd | 7員環構造を有する化合物およびその用途 |
| KR101161290B1 (ko) * | 2009-10-16 | 2012-07-02 | 에스에프씨 주식회사 | 축합방향족화합물 및 이를 이용한 유기전계발광소자 |
| US10305040B2 (en) * | 2011-11-17 | 2019-05-28 | Merck Patent Gmbh | Spiro dihydroacridine derivatives and the use thereof as materials for organic electroluminescence devices |
| US10573818B2 (en) * | 2014-12-01 | 2020-02-25 | Merck Patent Gmbh | Materials for organic electroluminescent devices |
| US10312459B2 (en) * | 2016-01-27 | 2019-06-04 | Nichem Fine Technology Co., Ltd. | Compound and organic electronic device using the same |
| CN105778891B (zh) | 2016-03-11 | 2019-03-19 | 中节能万润股份有限公司 | 有机光电材料、其制备方法以及包括该有机材料的有机电致发光器件 |
| TWI662013B (zh) * | 2016-03-24 | 2019-06-11 | 大陸商上海嶸彩光電材料有限公司 | 化合物及其有機電子裝置 |
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| KR20180065935A (ko) | 2018-06-18 |
| KR102012822B1 (ko) | 2019-08-21 |
| US10693077B2 (en) | 2020-06-23 |
| TWI658038B (zh) | 2019-05-01 |
| JP2018095639A (ja) | 2018-06-21 |
| TW201821415A (zh) | 2018-06-16 |
| CN108164496A (zh) | 2018-06-15 |
| JP6618979B2 (ja) | 2019-12-11 |
| KR102047777B1 (ko) | 2019-11-22 |
| TWI653218B (zh) | 2019-03-11 |
| US10483468B2 (en) | 2019-11-19 |
| CN108164485B (zh) | 2021-10-01 |
| US20180155312A1 (en) | 2018-06-07 |
| KR20180065934A (ko) | 2018-06-18 |
| JP2018100264A (ja) | 2018-06-28 |
| CN108164496B (zh) | 2020-06-26 |
| TW201821401A (zh) | 2018-06-16 |
| CN108164438A (zh) | 2018-06-15 |
| US20180159045A1 (en) | 2018-06-07 |
| US10510962B2 (en) | 2019-12-17 |
| CN108164438B (zh) | 2021-02-23 |
| CN108164485A (zh) | 2018-06-15 |
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