JP2020025080A - 有機電子デバイス用組成物及びこれを用いた有機電子デバイス - Google Patents
有機電子デバイス用組成物及びこれを用いた有機電子デバイス Download PDFInfo
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- JP2020025080A JP2020025080A JP2019104392A JP2019104392A JP2020025080A JP 2020025080 A JP2020025080 A JP 2020025080A JP 2019104392 A JP2019104392 A JP 2019104392A JP 2019104392 A JP2019104392 A JP 2019104392A JP 2020025080 A JP2020025080 A JP 2020025080A
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- CINYXYWQPZSTOT-UHFFFAOYSA-N 3-[3-[3,5-bis(3-pyridin-3-ylphenyl)phenyl]phenyl]pyridine Chemical group C1=CN=CC(C=2C=C(C=CC=2)C=2C=C(C=C(C=2)C=2C=C(C=CC=2)C=2C=NC=CC=2)C=2C=C(C=CC=2)C=2C=NC=CC=2)=C1 CINYXYWQPZSTOT-UHFFFAOYSA-N 0.000 description 1
- WCXKTQVEKDHQIY-UHFFFAOYSA-N 3-[3-[3-(3,5-dipyridin-3-ylphenyl)phenyl]-5-pyridin-3-ylphenyl]pyridine Chemical compound C1=CN=CC(C=2C=C(C=C(C=2)C=2C=NC=CC=2)C=2C=C(C=CC=2)C=2C=C(C=C(C=2)C=2C=NC=CC=2)C=2C=NC=CC=2)=C1 WCXKTQVEKDHQIY-UHFFFAOYSA-N 0.000 description 1
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- NVFINOHFZXRPAD-UHFFFAOYSA-N 9h-fluorene-1,2-diamine Chemical class C1=CC=C2CC3=C(N)C(N)=CC=C3C2=C1 NVFINOHFZXRPAD-UHFFFAOYSA-N 0.000 description 1
- 101000837344 Homo sapiens T-cell leukemia translocation-altered gene protein Proteins 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
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- 229920001609 Poly(3,4-ethylenedioxythiophene) Polymers 0.000 description 1
- 238000006161 Suzuki-Miyaura coupling reaction Methods 0.000 description 1
- 102100028692 T-cell leukemia translocation-altered gene protein Human genes 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
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- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- ABCGFHPGHXSVKI-UHFFFAOYSA-O meso-tetrakis(n-methyl-4-pyridyl)porphine(4+) Chemical compound C1=C[N+](C)=CC=C1C(C1=CC=C(N1)C(C=1C=C[N+](C)=CC=1)=C1C=CC(=N1)C(C=1C=C[N+](C)=CC=1)=C1C=CC(N1)=C1C=2C=C[N+](C)=CC=2)=C2N=C1C=C2 ABCGFHPGHXSVKI-UHFFFAOYSA-O 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
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- VZYZZKOUCVXTOJ-UHFFFAOYSA-N n-[4-[4-(n-(9,9-dimethylfluoren-2-yl)anilino)phenyl]phenyl]-9,9-dimethyl-n-phenylfluoren-2-amine Chemical compound C1=C2C(C)(C)C3=CC=CC=C3C2=CC=C1N(C=1C=CC(=CC=1)C=1C=CC(=CC=1)N(C=1C=CC=CC=1)C=1C=C2C(C)(C)C3=CC=CC=C3C2=CC=1)C1=CC=CC=C1 VZYZZKOUCVXTOJ-UHFFFAOYSA-N 0.000 description 1
- 238000013086 organic photovoltaic Methods 0.000 description 1
- 239000000075 oxide glass Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229920000767 polyaniline Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000010898 silica gel chromatography Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- BWHOZHOGCMHOBV-BQYQJAHWSA-N trans-benzylideneacetone Chemical compound CC(=O)\C=C\C1=CC=CC=C1 BWHOZHOGCMHOBV-BQYQJAHWSA-N 0.000 description 1
- RFDGVZHLJCKEPT-UHFFFAOYSA-N tris(2,4,6-trimethyl-3-pyridin-3-ylphenyl)borane Chemical compound CC1=C(B(C=2C(=C(C=3C=NC=CC=3)C(C)=CC=2C)C)C=2C(=C(C=3C=NC=CC=3)C(C)=CC=2C)C)C(C)=CC(C)=C1C1=CC=CN=C1 RFDGVZHLJCKEPT-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D209/00—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
- C07D209/56—Ring systems containing three or more rings
- C07D209/80—[b, c]- or [b, d]-condensed
- C07D209/82—Carbazoles; Hydrogenated carbazoles
- C07D209/86—Carbazoles; Hydrogenated carbazoles with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to carbon atoms of the ring system
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/06—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom containing only hydrogen and carbon atoms in addition to the ring nitrogen atom
- C07D213/22—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom containing only hydrogen and carbon atoms in addition to the ring nitrogen atom containing two or more pyridine rings directly linked together, e.g. bipyridyl
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D239/00—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
- C07D239/02—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
- C07D239/24—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
- C07D239/26—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D251/00—Heterocyclic compounds containing 1,3,5-triazine rings
- C07D251/02—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings
- C07D251/12—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
- C07D251/14—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with hydrogen or carbon atoms directly attached to at least one ring carbon atom
- C07D251/24—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with hydrogen or carbon atoms directly attached to at least one ring carbon atom to three ring carbon atoms
-
- C—CHEMISTRY; METALLURGY
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Abstract
Description
本出願は、米国特許法第119条(e)の下で、2018年6月5日に出願された米国仮特許出願第62/680,625号に基づく優先権を主張する。ここに本明細書の一部を構成するものとして、当該先行出願の内容を全体として援用する。
pは1〜5の整数であり、mは1〜4の整数であり、nは1〜3の整数であり;及び
A1〜A3はそれぞれ独立して水素原子、重水素原子、ハロゲン基、シアノ基、ニトロ基、炭素数1〜6のアルキル基、炭素数2〜6のアルケニル基、及び炭素数2〜6のアルキニル基から成る群から選択される。
p’は1〜5の整数であり、m’は1〜4の整数であり、及びn’1〜3の整数であり;及び
A4〜A6はそれぞれ独立して水素原子、重水素原子、ハロゲン基、シアノ基、ニトロ基、炭素数1〜6のアルキル基、炭素数2〜6のアルケニル基、及び炭素数2〜6のアルキニル基から成る群から選択される。
前記第1の電極上に形成された正孔注入層と、
前記正孔注入層上に形成された正孔輸送層と、
前記正孔輸送層上に形成された発光層と、
前記発光層上に形成された電子輸送層と、
前記電子輸送層と前記第2の電極との間に形成された電子注入層と、
を含み得る。
第1のホスト化合物として用いられる化合物I−1及びI−2を以下の工程によって合成した。この合成経路をスキームR1に要約した。
化合物I−10を合成するために使用した
第1のホスト化合物として使用される化合物I−16〜I−19及びI−27を以下の工程により合成した。合成経路をスキームR2に要約した。
第1のホスト化合物として使用される化合物I−20〜I−23を以下の工程によって合成した。合成経路をスキームR3に要約した。
第1のホスト化合物として使用される化合物I−24及びI−25を以下の工程によって合成した。合成経路をスキームR4に要約した。
適切な量の前述の、表1に示した第1のホスト化合物及び表4に示した第2のホスト化合物を採用することにより組成物1〜51をそれぞれ得た。組成物1〜51に使用した前述の第1のホスト化合物及び第2のホスト化合物の種を表5に示した。組成物1〜47の各々における第1のホスト化合物及び第2のホスト化合物の重量比は1:1、組成物48〜50中の第1のホスト化合物及び第2のホスト化合物の重量比は6:4、組成物51中の第1のホスト化合物及び第2のホスト化合物の重量比は4:6とした。
アセトン及びイソプロピルアルコールによりクリーニングした厚さ500Åのガラス基材を用意した。表1に示した化合物I−1〜I−28、表4に示した化合物II−1〜II−4、及び表5に示した組成物1〜53を真空度10−6トールで各ガラス基材上に蒸着し、化合物I−1〜I−28、化合物II−1〜II−4、及び組成物1〜53の各PL試験フィルムを調製した。
厚さ1500ÅのITO層でコーティングされたガラス基材(ITO基材と略される)を、洗剤を溶かした蒸留水中に入れ、超音波洗浄した。この洗剤はフィッシャー社(Fischer Co.)により製造された製品であり、蒸留水はフィルタ(ミリポア社(Millipore Co.))で2度ろ過された蒸留水であった。このITO層を30分間洗浄した後、蒸留水による10分間の超音波洗浄を2回行った。洗浄終了後、このガラス基材をイソプロピルアルコール、アセトン、及びメタノール溶媒で超音波洗浄してから乾燥させ、その後プラズマ洗浄機に移した。その後この基材を酸素プラズマで5分間クリーニングしてから、真空エバポレータへと移した。
緑色OLEDデバイスを調製するために、表8に示した順序に従い複数の有機層を前記ITO基材上にそれぞれ蒸着し、この緑色OLEDデバイスにおける有機層の材料及び膜厚もまた表8に示した。
赤色OLEDデバイスを調製するために、表9に示した順序に従い複数の有機層を前記ITO基材上にそれぞれ蒸着し、この赤色OLEDデバイスにおける有機層の材料及び膜厚もまた表9に示した。
1.色座標(x,y)、駆動電圧、及び電流効率
OLEDデバイスの性能を評価するために、前記緑色又は赤色OLEDデバイスを、光度計としてPR650、電源としてケースレー(Keithley)2400により測定した。色座標(x,y)はCIE色度スケール(Commission Internationale de L’Eclairage、1931年)に従って決定した。その結果を表10及び11に示した。緑色OLEDデバイスについては、9000nitの特定の輝度でデータを収集した。赤色OLEDデバイスについては、3000nitの特定の輝度でデータを収集した。
電源を用いて電圧を0Vから6.2Vまで上昇させながら、OLEDのデバイス内を流れる電流値を測定し、各電圧の電流値を測定した。
電源を用いて電圧を0Vから6.2Vまで上昇させながら、製造されたOLEDの輝度を光度計により測定した。
前述の項目(1)及び(2)で得られた輝度及び電流密度を用いることによって、電流効率(cd/A)を計算した。
CIE色度スケールに従って色座標(x,y)を決定した。CIE(x,y)の変化は0Vから6.2Vまでの電圧に依存しており、このことは光度計により記録された。
OLED寿命試験システム(クロマ(Chroma)、モデル58131)により寿命(T95)を測定した。T95は、輝度値が初期輝度値(緑色OLEDでは7,000nit及び赤色OEDでは6000nit)に対して95%に達するのにかかる時間を評価する寿命データを表す。
Claims (13)
- 有機電子デバイス用組成物であって、
下記式(I)により表される第1のホスト化合物と、
式(I)中のYは単結合、酸素原子、又は硫黄原子であり;
式(I)のZ1〜Z3はそれぞれ独立してCHであるか、式(I)のZ1〜Z3の隣り合う2つが互いに結合してアリール環を形成し且つZ1〜Z3の残りの1つがCHであるか、又は式(I)のZ1〜Z3の隣り合う2つが互いに結合して少なくとも1つのフラン基若しくは少なくとも1つのチオフェン基を含有するヘテロアリール環を形成し且つZ1〜Z3の残りの1つがCHであり;
式(I)中のX1〜X3の2つはそれぞれ独立して窒素原子であり且つ式(I)中のX1〜X3のその他はCH又は窒素原子であり;
式(I)のL’、L1、及びL2はそれぞれ独立して環炭素数6〜18のアリーレン基であり;
n’、n1、及びn2はそれぞれ独立して0〜2の整数であり;
式(I)中のG1及びG2はそれぞれ独立して環炭素数6〜18のアリール基、環炭素数6〜18のアリールオキシ基、環炭素数6〜18のアリールチオキシ基、又はN、O、若しくはS原子を含有する環炭素数3〜30のヘテロアリール基であり;
式(II)中のL3は環炭素数6〜18のアリーレン基であり;
n3は0〜2の整数であり;
式(II)中のG4及びG5はそれぞれ独立して環炭素数6〜18のアリール基、環炭素数6〜18のアリールオキシ基、環炭素数6〜18のアリールチオキシ基、又はN、O、若しくはS原子を含有する及び環炭素数3〜30のヘテロアリール基であり;及び
式(II)中のQ1及びQ2はそれぞれ独立してCHであるか又は式(II)中のQ1及びQ2は互いに結合してアリール環を形成している、組成物。 - 前記第1のホスト化合物は下記式(I’)によって表される、請求項1に記載の組成物:
- 前記第1及び第2のホスト化合物の重量比は3:7〜7:3の範囲である、請求項1又は2に記載の組成物。
- 前記第1のホスト化合物は下記式(I−I)〜(I−XVI)のいずれか1つによって表される、請求項1〜3のいずれか1項に記載の組成物:
- 請求項1〜4のいずれか1項に記載の組成物であって、前記第2のホスト化合物は下記式(II−I)〜(II−III)のいずれか1つによって表され:
- 請求項1〜4のいずれか1項に記載の組成物であって、G1及びG2がそれぞれ独立して以下から成る群から選択され:
A1〜A3はそれぞれ独立して、水素原子、重水素原子、ハロゲン基、シアノ基、ニトロ基、炭素数1〜6のアルキル基、炭素数2〜6のアルケニル基、及び炭素数2〜6のアルキニル基から成る群から選択される、組成物。 - 請求項1〜6のいずれか1項に記載の組成物であって、G4及びG5がそれぞれ独立して以下から成る群から選択され:
A4〜A6がそれぞれ独立して水素原子、重水素原子、ハロゲン基、シアノ基、ニトロ基、炭素数1〜6のアルキル基、炭素数2〜6のアルケニル基、及び炭素数2〜6のアルキニル基から成る群から選択される、組成物。 -
- 前記第1のホスト化合物は以下から成る群から選択される、請求項1又は2に記載の組成物:
- 前記第2のホスト化合物は以下から成る群から選択される、請求項9に記載の組成物:
- 第1の電極、第2の電極、及び前記第1の電極と前記第2の電極との間に配置された有機層を含み、前記有機層が請求項1〜10のいずれか1項に記載の組成物を含む、有機電子デバイス。
- 前記有機電子デバイスは有機発光デバイスである、請求項11に記載の有機電子デバイス。
- 請求項12に記載の有機電子デバイスであって、前記有機発光デバイスが、
前記第1の電極上に形成された正孔注入層と、
前記正孔注入層上に形成された正孔輸送層と、
前記正孔輸送層上に形成された発光層であって、前記発光層は請求項1に記載の組成物を含む、発光層と、
前記発光層上に形成された電子輸送層と、
前記電子輸送層と前記第2の電極との間に形成された電子注入層と、
を含む、
有機電子デバイス。
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