JP2020143054A - 有機電界発光素子及び有機電界発光素子用多環化合物 - Google Patents
有機電界発光素子及び有機電界発光素子用多環化合物 Download PDFInfo
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- 125000004122 cyclic group Chemical group 0.000 description 1
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- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical group [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- DLEDOFVPSDKWEF-UHFFFAOYSA-N lithium butane Chemical compound [Li+].CCC[CH2-] DLEDOFVPSDKWEF-UHFFFAOYSA-N 0.000 description 1
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- 229910001507 metal halide Inorganic materials 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 description 1
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- 125000001971 neopentyl group Chemical group [H]C([*])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
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- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 1
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- 125000004625 phenanthrolinyl group Chemical group N1=C(C=CC2=CC=C3C=CC=NC3=C12)* 0.000 description 1
- 125000005561 phenanthryl group Chemical group 0.000 description 1
- 125000001484 phenothiazinyl group Chemical group C1(=CC=CC=2SC3=CC=CC=C3NC12)* 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 229910000073 phosphorus hydride Inorganic materials 0.000 description 1
- 125000004592 phthalazinyl group Chemical group C1(=NN=CC2=CC=CC=C12)* 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical class N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 1
- 229920001643 poly(ether ketone) Polymers 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- MWWATHDPGQKSAR-UHFFFAOYSA-N propyne Chemical group CC#C MWWATHDPGQKSAR-UHFFFAOYSA-N 0.000 description 1
- 125000006239 protecting group Chemical group 0.000 description 1
- 125000001725 pyrenyl group Chemical group 0.000 description 1
- 125000000714 pyrimidinyl group Chemical group 0.000 description 1
- 125000000168 pyrrolyl group Chemical group 0.000 description 1
- 125000002294 quinazolinyl group Chemical group N1=C(N=CC2=CC=CC=C12)* 0.000 description 1
- 125000002943 quinolinyl group Chemical group N1=C(C=CC2=CC=CC=C12)* 0.000 description 1
- 125000001567 quinoxalinyl group Chemical group N1=C(C=NC2=CC=CC=C12)* 0.000 description 1
- WFUBYPSJBBQSOU-UHFFFAOYSA-M rubidium iodide Inorganic materials [Rb+].[I-] WFUBYPSJBBQSOU-UHFFFAOYSA-M 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 235000021286 stilbenes Nutrition 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 125000000475 sulfinyl group Chemical group [*:2]S([*:1])=O 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 125000001973 tert-pentyl group Chemical group [H]C([H])([H])C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000001113 thiadiazolyl group Chemical group 0.000 description 1
- 125000001544 thienyl group Chemical group 0.000 description 1
- 125000000101 thioether group Chemical group 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- PJANXHGTPQOBST-VAWYXSNFSA-N trans-stilbene Chemical compound C=1C=CC=CC=1/C=C/C1=CC=CC=C1 PJANXHGTPQOBST-VAWYXSNFSA-N 0.000 description 1
- 125000004306 triazinyl group Chemical group 0.000 description 1
- 125000001425 triazolyl group Chemical group 0.000 description 1
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 150000001651 triphenylamine derivatives Chemical class 0.000 description 1
- 125000003960 triphenylenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3C3=CC=CC=C3C12)* 0.000 description 1
- 229910001930 tungsten oxide Inorganic materials 0.000 description 1
- 229910021642 ultra pure water Inorganic materials 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
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Abstract
【解決手段】式1で表される多環化合物。
式1において、Ar1及びAr2は、それぞれ独立して、置換若しくは無置換の炭素数6以上30以下のアリール基等:R1〜R8は、それぞれ独立して、H、置換若しくは無置換のアミノ基、置換若しくは無置換の環形成炭素数6以上30以下のアリール基等、またはR1〜R8は互いに結合して環を形成し、R1〜R8のうち少なくとも2つは、2つの置換若しくは無置換のアリール基等が置換したアミノ基を有する。
【選択図】なし
Description
化学式1において、Ar1及びAr2はそれぞれ独立して置換若しくは無置換の環形成炭素数6以上30以下のアリール基、または置換若しくは無置換の環形成炭素数2以上30以下のヘテロアリール基であり、R1〜R8はそれぞれ独立して水素原子、重水素原子、ハロゲン原子、置換若しくは無置換のアミノ基、シアノ基、ホウ素機、カルボニル基、シリル基、オキシ基、ホスフィンオキシド基、ホスフィンスルフィド基、置換若しくは無置換のチオール基、スルホニル基、置換若しくは無置換の炭素数1以上20以下のアルキル基、置換若しくは無置換の炭素数7以上30以下のアラルキル基、置換若しくは無置換の環形成炭素数6以上30以下のアリール基、置換若しくは無置換の環形成炭素数2以上30以下のヘテロアリール基であるか、またはR1〜R8は互いに結合して環を形成し、R1〜R8のうち少なくとも2つは下記化学式2で表される。
化学式2において、Lは単結合、置換若しくは無置換の環形成炭素数6以上30以下のアリーレン基、置換若しくは無置換の環形成炭素数2以上30以下のヘテロアリーレン基であるか、または隣接する基と結合して環を形成し、Ar3及びAr4はそれぞれ独立して置換若しくは無置換の環形成炭素数6以上30以下のアリール基、置換若しくは無置換の環形成炭素数2以上30以下のヘテロアリール基であるか、または隣接する基と結合して環を形成する。
化学式3において、V1〜V5はそれぞれ独立してNまたはCR9であり、R9は水素原子、重水素原子、ハロゲン原子、ホウ素基、置換若しくは無置換のアミノ基、シアノ基、カルボニル基、オキシ基、シリル基、チオール基、ホスフィンオキシド基、ホスフィンスルフィド基、置換若しくは無置換の炭素数1以上20以下のアルキル基、置換若しくは無置換の炭素数1以上20以下のアルケニル基、置換若しくは無置換の環形成炭素数6以上30以下のアリール基、置換若しくは無置換の炭素数7以上30以下のアラルキル基、置換若しくは無置換の環形成炭素数2以上30以下のヘテロアリール基であるか、または隣接する基と結合して環を形成する。
[第1化合物群]
は、結合される位置を意味する。
化学式4において、L’は単結合、置換若しくは無置換の環形成炭素数6以上30以下のアリーレン基、または置換若しくは無置換の環形成炭素数2以上30以下のヘテロアリーレン基である。
[第1化合物群]
以下で説明する多環化合物の合成法は一実施例であって、本発明の実施形態による多環化合物の合成法は下記実施例に限らない。
Ar雰囲気下、200mL三口フラスコに、中間体A(15g、31mmol)にヨウ化ベンゼン(32g、157mmol)を追加した。ここにCuI(6.0g、31mmol)、炭酸カリウム(8.6g、62mmol)を追加し、190℃で80時間攪拌した。反応後、トルエンを追加してろ過し、得られた有機相を濃縮して、粘性物質を得た。得られた粗生成物をカラムクロマトグラフィ(シリカゲル)で精製した後、中間体Bを10.3g(18mmol、収率58%)を得た。FAB−MS測定によって測定された中間体Bの質量数は557であった。
Ar雰囲気下、500mL三口フラスコに、中間体B(6.2g、12.8mmol)に脱水ジエチルエーテル150mLを追加し溶解して、−78℃で1時間攪拌した。ここに1.6M n−BuLiヘキサン溶液16mL(25mmol)を滴下し、2時間攪拌した。ここに2,4,6−トリイソプロピルフェニルボロン酸メチルエステル4.0g(14mmol)を追加した後、攪拌しながら反応溶液の温度を室温まで昇温させ、室温で一晩攪拌した。反応後、この反応を、水を追加して停止し、生成物をクロロホルムで抽出した。得られた有機相を濃縮し、粗生成物を固体で得た。得られた粗生成物をカラムクロマトグラフィ(シリカゲル)で精製した後、中間体Cを2.8g(4.6mmol、収率36%)を得た。FAB−MS測定によって測定された中間体Cの質量数は613であった。
1)中間体Dの合成
(有機電界発光素子の製作)
[実施例化合物]
[比較例化合物]
実施例及び比較例による有機電界発光素子の特性を評価するために、半値幅(nm)、外部量子収率(%)、及び寿命を測定した。浜松ホトニクス社製C9920−11輝度配向特性測定装置を利用して測定した。寿命は初期輝度100cd/m2からの輝度半減時間を示し、外部量子収率は10mA/cm2における値を示す。
EL2:第2電極 HTR:正孔輸送領域
EML:発光層 ETR:電子輸送領域
Claims (10)
- 下記化学式1で表される多環化合物:
化学式1において、
Ar1及びAr2はそれぞれ独立して置換若しくは無置換の炭素数6以上30以下のアリール基、または置換若しくは無置換の環形成炭素数2以上30以下のヘテロアリール基であり、
R1〜R8はそれぞれ独立して水素原子、重水素原子、ハロゲン原子、置換若しくは無置換のアミノ基、シアノ基、ホウ素基、カルボニル基、シリル基、オキシ基、ホスフィンオキシド基、ホスフィンスルフィド基、置換若しくは無置換のチオール基、スルホニル基、置換若しくは無置換の炭素数1以上20以下のアルキル基、置換若しくは無置換の炭素数7以上30以下のアラルキル基、置換若しくは無置換の環形成炭素数6以上30以下のアリール基、置換若しくは無置換の環形成炭素数2以上30以下のヘテロアリール基であるか、またはR1〜R8は互いに結合して環を形成し、
R1〜R8のうち少なくとも2つは下記化学式2で表される:
前記化学式2において、
Lは単結合、置換若しくは無置換の環形成炭素数6以上30以下のアリーレン基、または置換若しくは無置換の環形成炭素数2以上30以下のヘテロアリーレン基であるか、または隣接する基と結合して環を形成し、
Ar3及びAr4はそれぞれ独立して、置換若しくは無置換の環形成炭素数6以上30以下のアリール基、置換若しくは無置換の環形成炭素数2以上30以下のヘテロアリール基であるか、または隣接する基と結合して環を形成する。 - 前記Ar1は、下記化学式3で表される請求項1に記載の多環化合物:
前記化学式3において、
V1〜V5はそれぞれ独立してNまたはCR9であり、
R9は水素原子、重水素原子、ハロゲン原子、ホウ素基、置換若しくは無置換のアミノ基、シアノ基、カルボニル基、オキシ基、シリル基、チオール基、ホスフィンオキシド基、ホスフィンスルフィド基、置換若しくは無置換の炭素数1以上20以下のアルキル基、置換若しくは無置換の炭素数1以上20以下のアルケニル基、置換若しくは無置換の環形成炭素数6以上30以下のアリール基、置換若しくは無置換の炭素数7以上30以下のアラルキル基、置換若しくは無置換の環形成炭素数2以上30以下のヘテロアリール基であるか、または隣接する基と結合して環を形成する。 - 前記V1〜V5のうち少なくとも一つはCR10であり、
前記R10は置換若しくは無置換の炭素数2以上20以下のアルキル基である請求項1に記載の多環化合物。 - 前記化学式1で表される化合物は、熱活性遅延蛍光発光材料である請求項1に記載の多環化合物。
- 前記Ar3は置換された環形成炭素数6以上30以下のアリール基、または置換若しくは無置換の環形成炭素数2以上30以下のヘテロアリール基である請求項1に記載の多環化合物。
- 前記R1〜R4のうち少なくとも一つは化学式2で表され、
前記R5〜R8のうち少なくとも一つは化学式2で表される請求項1に記載の多環化合物。 - 前記化学式1は、下記化学式4で表される請求項1に記載の多環化合物:
前記化学式4において、
L’は単結合、置換若しくは無置換の環形成炭素数6以上30以下のアリーレン基、または置換若しくは無置換の環形成炭素数2以上30以下のヘテロアリーレン基であり、
Ar3’及びAr4’はそれぞれ独立して、置換若しくは無置換の環形成炭素数6以上30以下のアリール基、置換若しくは無置換の環形成炭素数2以上30以下のヘテロアリール基であるか、または隣接する基と結合して環を形成し、
Ar1〜Ar4、R1、R3〜R6、R8、及びLは化学式1及び化学式2で定義した通りである。 - 前記化学式1で表される化合物は、下記第1化合物群に示した化合物のうちいずれか一つである請求項1に記載の多環化合物:
[第1化合物群]
。 - 第1電極と、
前記第1電極の上に配置される正孔輸送領域と、
前記正孔輸送領域の上に配置される発光層と、
前記発光層の上に配置される電子輸送領域と、
前記電子輸送領域の上に配置される第2電極と、を含み、
前記発光層は、請求項1乃至請求項8のうちいずれか一項による多環化合物を含む有機電界発光素子。 - 前記発光層はホスト及びドーパントを含む遅延蛍光発光層であり、
前記ドーパントは前記多環化合物である請求項9に記載の有機電界発光素子。
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