JP2012246258A - 縮合多環化合物及びこれを用いた有機発光素子 - Google Patents
縮合多環化合物及びこれを用いた有機発光素子 Download PDFInfo
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- JP2012246258A JP2012246258A JP2011120164A JP2011120164A JP2012246258A JP 2012246258 A JP2012246258 A JP 2012246258A JP 2011120164 A JP2011120164 A JP 2011120164A JP 2011120164 A JP2011120164 A JP 2011120164A JP 2012246258 A JP2012246258 A JP 2012246258A
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- -1 polycyclic compound Chemical class 0.000 title claims abstract description 52
- 150000001875 compounds Chemical class 0.000 claims abstract description 137
- 125000001424 substituent group Chemical group 0.000 claims abstract description 39
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims abstract description 26
- 150000002894 organic compounds Chemical class 0.000 claims abstract description 23
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims abstract description 22
- 125000000217 alkyl group Chemical group 0.000 claims description 12
- 125000004432 carbon atom Chemical group C* 0.000 claims description 10
- 125000004093 cyano group Chemical group *C#N 0.000 claims description 10
- NAWXUBYGYWOOIX-SFHVURJKSA-N (2s)-2-[[4-[2-(2,4-diaminoquinazolin-6-yl)ethyl]benzoyl]amino]-4-methylidenepentanedioic acid Chemical compound C1=CC2=NC(N)=NC(N)=C2C=C1CCC1=CC=C(C(=O)N[C@@H](CC(=C)C(O)=O)C(O)=O)C=C1 NAWXUBYGYWOOIX-SFHVURJKSA-N 0.000 claims description 3
- 125000003367 polycyclic group Chemical group 0.000 abstract description 2
- 125000003118 aryl group Chemical group 0.000 abstract 1
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- 0 *c1ccc2[o]c(-c3cccc(-c(c4c5c-6ccc4)ccc5-c4c-6c(-c5ccccc5)c(cc-5c(c6ccc7)c7-c7ccccc-57)c6c4-c4ccccc4)c3)nc2n1 Chemical compound *c1ccc2[o]c(-c3cccc(-c(c4c5c-6ccc4)ccc5-c4c-6c(-c5ccccc5)c(cc-5c(c6ccc7)c7-c7ccccc-57)c6c4-c4ccccc4)c3)nc2n1 0.000 description 2
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- 238000004020 luminiscence type Methods 0.000 description 1
- SJCKRGFTWFGHGZ-UHFFFAOYSA-N magnesium silver Chemical compound [Mg].[Ag] SJCKRGFTWFGHGZ-UHFFFAOYSA-N 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- SKTCDJAMAYNROS-UHFFFAOYSA-N methoxycyclopentane Chemical compound COC1CCCC1 SKTCDJAMAYNROS-UHFFFAOYSA-N 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- MZRVEZGGRBJDDB-UHFFFAOYSA-N n-Butyllithium Substances [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 1
- 150000002790 naphthalenes Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 125000002524 organometallic group Chemical group 0.000 description 1
- 150000004866 oxadiazoles Chemical class 0.000 description 1
- 150000007978 oxazole derivatives Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 150000002987 phenanthrenes Chemical class 0.000 description 1
- 150000005041 phenanthrolines Chemical class 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 description 1
- 150000004986 phenylenediamines Chemical class 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
- 230000000704 physical effect Effects 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 150000003057 platinum Chemical class 0.000 description 1
- 229920000553 poly(phenylenevinylene) Polymers 0.000 description 1
- 229920000767 polyaniline Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920000128 polypyrrole Polymers 0.000 description 1
- 150000004033 porphyrin derivatives Chemical class 0.000 description 1
- 235000011056 potassium acetate Nutrition 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 150000003216 pyrazines Chemical class 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- MCJGNVYPOGVAJF-UHFFFAOYSA-N quinolin-8-ol Chemical compound C1=CN=C2C(O)=CC=CC2=C1 MCJGNVYPOGVAJF-UHFFFAOYSA-N 0.000 description 1
- 150000003248 quinolines Chemical class 0.000 description 1
- 150000003252 quinoxalines Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical class O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- PJANXHGTPQOBST-UHFFFAOYSA-N stilbene Chemical class C=1C=CC=CC=1C=CC1=CC=CC=C1 PJANXHGTPQOBST-UHFFFAOYSA-N 0.000 description 1
- 239000003115 supporting electrolyte Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- 229940042055 systemic antimycotics triazole derivative Drugs 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- KBLZDCFTQSIIOH-UHFFFAOYSA-M tetrabutylazanium;perchlorate Chemical compound [O-]Cl(=O)(=O)=O.CCCC[N+](CCCC)(CCCC)CCCC KBLZDCFTQSIIOH-UHFFFAOYSA-M 0.000 description 1
- 239000010409 thin film Substances 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
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 150000003918 triazines Chemical class 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 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
- 239000011787 zinc oxide Substances 0.000 description 1
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Abstract
Description
本発明の縮合多環化合物、具体的には、一般式[1]、[2]、[8]又は[9]に示される化合物は、例えば、以下に示す合成ルートに従って合成することができる。
以下、本発明の縮合多環化合物についてさらに詳細を説明する。
(A)振動子強度が高いこと
(B)発光にかかわる骨格の振動部分が少ないこと
(a)発光層内での電子・ホールの輸送。
(b)ホストの励起子生成。
(c)ホスト分子間の励起エネルギー伝達。
(d)ホストからゲストへの励起エネルギー移動。
次に、本発明の有機発光素子について説明する。
(i)(陽極/)発光層(/陰極)
(ii)(陽極/)正孔輸送層/電子輸送層(/陰極)
(iii)(陽極/)正孔輸送層/発光層/電子輸送層(/陰極)
(iv)(陽極/)正孔注入層/正孔輸送層/発光層/電子輸送層(/陰極)
(v)(陽極/)正孔輸送層/発光層/正孔・エキシトンブロッキング層/電子輸送層(/陰極)
本発明に係る有機発光素子は、表示装置や照明装置の構成部材として用いることができる。他にも電子写真方式の画像形成装置の露光光源や、液晶表示装置のバックライト等としての用途がある。
以下に説明する合成方法に従い、例示化合物D1、D2を合成した。
3−アミノフルオランテン:45.4g(209mmol)
DMF:910mL
2−ブロモフルオランテン−3−アミン:55.6g(188mmol)
特級シクロペンチルメチルエーテル:1.12L
5−ブロモ−アセナフチレン−1,2−ジオン:15.0g(57.5mmmol)
1,3−ジフェニルプロパン−2−オン:12.1g(57.5mmol)
エタノール:300mL
中間体化合物M2:18.0g(41.3mmol)
中間体化合物M1:14.0g(53.8mmol)
亜硝酸イソアミル:8.72g(74.4mmol)
トルエン:720mL
中間体化合物M3(M3−1とM3−2との混合物):19.4g(31.9mmol)
ビス−ジオキサボロラン:16.2g(63.9mmol)
酢酸カリウム:6.27g(63.9mmol)
テトラキストリフェニルフォスフィンパラジウム:1.107g(0.96mmol)
DMSO:388mL
4−ブロモ−3,5−ジメチルフェノール:3.19g(16mmol)
ピリジン:5.65g(71mmol)
トルエン:65mL
4−ブロモ−3,5−ジメチルフェニル−トルフルオロメタンスルホン酸エステル:4.90g(14.7mmol)
4−シアノフェニルボロン酸:2.05g(14.0mmol)
ジオキサン:245mL
炭酸カリウム:4.07g(29.4mmol)
テトラキストリフェニルホスフィンパラジウム:0.17g(0.15mmol)
中間体化合物M4(M4−1とM4−2との混合物):4.40g(6.72mmol)
中間体化合物M5:1.54g(5.38mmol)
トルエン:220mL
エタノール:110mL
炭酸ナトリウム:1.42g(13.4mmol)
水:100mL
テトラキストリフェニルホスフィンパラジウム:0.39g(0.34mmol)
実施例1(6)において、中間体化合物M5の代わりに下記に示される中間体化合物M6を用いたことを除いては、実施例1と同様の方法で合成を行い、例示化合物D87、D88(の混合物)を得た。以下に、中間体化合物M6、並びに例示化合物D87及びD88の具体的な合成方法について説明する。
中間体化合物M4(M4−1とM4−2との混合物):1.30g(1.99mmol)
中間体化合物M6:1.54g(1.39mmol)
トルエン:39mL
エタノール:13mL
炭酸ナトリウム:0.42g(3.97mmol)
水:13mL
テトラキストリフェニルホスフィンパラジウム:0.12g(0.11mmol)
実施例1(6)において、中間体化合物M5の代わりに下記に示される中間体化合物M7を用いたことを除いては、実施例1と同様の方法で合成を行い、例示化合物D83、D84(の混合物)を得た。以下に、中間体化合物M7、並びに例示化合物D83及びD84の具体的な合成方法について説明する。
中間体化合物M4(M4−1とM4−2との混合物):1.40g(2.10mmol)
中間体化合物M7:0.48g(1.39mmol)
トルエン:70mL
エタノール:30mL
炭酸ナトリウム:0.17g(3.97mmol)
水:30mL
テトラキストリフェニルホスフィンパラジウム:0.12g(0.11mmol)
以下に説明する方法で、実施例1乃至3にてそれぞれ得られた化合物(例示化合物D1、D2、D83、D84、D87、D88)及び比較例1及び2にて得られた化合物(比較化合物R1、R2、R3、R4)について量子収率及び酸化還元電位を評価した。
まず濃度10-6mol/lのトルエン溶液を調製した。次に、調製した溶液について、絶対PL量子収率測定装置(浜松ホトニクス社製、商品名:C9920)を用い、励起波長を414nmとしたときの値を測定した。そして、比較化合物R1及びR2の混合物(混合比=1:1)を1とした場合の発光量子収率の相対値を求めた。結果を表1に示す。
サイクリックボルタンメトリー法により酸化還元電位を以下のように測定した。具体的には、0.1mol/Lのテトラブチルアンモニウムパークロレイトを支持電解物質とし、以下の条件で、酸化電位及び還元電位を測定した。酸化電位は、各化合物の1×10-4mol/L以上1×10-6mol/L以下の塩化メチレン溶液中で測定した。還元電位は、各化合物の1×10-4mol/L以上1×10-6mol/L以下のN,N−ジメチルホルムアミド溶液中で測定した。尚、測定にあたり測定温度を各々25℃に設定し、Ag/AgNO3を参照電極とし、白金電極を対向電極とし、グラシックカーボンを作用電極としてそれぞれ用いて測定を行った。結果を表1に示す。
本実施例では、基板上に、陽極、正孔輸送層、発光層、正孔・エキシトンブロッキング層、電子輸送層及び陰極が順次形成されている有機発光素子を作製した。以下に、本実施例で使用した材料の一部を示す。
実施例4において、ゲストを、表3に示される化合物に適宜変更する以外は、実施例4と同様の方法により有機発光素子を作製した。得られた素子について実施例4と同様に素子の特性を測定・評価した。測定の結果を表3に示す。
実施例4において、ゲストを、比較化合物R1、R2(R1とR2との重量混合比は、1:1である。)に適宜変更する以外は、実施例4と同様の方法により有機発光素子を作製した。得られた素子について実施例4と同様に素子の特性を測定・評価した。測定の結果を表3に示す。
本発明の縮合多環化合物は、高い量子収率と青色発光を呈する有機化合物であり、有機発光素子の構成材料に用いた場合、良好な色度と高効率を示すと同時に特に耐久特性が良好な発光素子を提供することができる。
Claims (8)
- 陽極と陰極と、
前記陽極と前記陰極との間に配置される有機化合物層と、を有する有機発光素子において、
前記有機化合物層のうち少なくとも一層が、請求項1乃至5のいずれか一項に記載の縮合多環化合物を有することを特徴とする、有機発光素子。 - 前記縮合多環化合物が発光層に含まれることを特徴とする、請求項6に記載の有機発光素子。
- 前記発光層が、ホストとゲストとから構成されることを特徴とする、請求項7に記載の有機発光素子。
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