JP4855678B2 - 混合デンドリマー - Google Patents
混合デンドリマー Download PDFInfo
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- JP4855678B2 JP4855678B2 JP2004532303A JP2004532303A JP4855678B2 JP 4855678 B2 JP4855678 B2 JP 4855678B2 JP 2004532303 A JP2004532303 A JP 2004532303A JP 2004532303 A JP2004532303 A JP 2004532303A JP 4855678 B2 JP4855678 B2 JP 4855678B2
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- dendrimer
- dendrimers
- charge transport
- same
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Classifications
-
- 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
- C07F15/00—Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
- C07F15/0006—Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table compounds of the platinum group
- C07F15/0033—Iridium compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
- C08L101/005—Dendritic macromolecules
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/30—Coordination compounds
- H10K85/341—Transition metal complexes, e.g. Ru(II)polypyridine complexes
- H10K85/342—Transition metal complexes, e.g. Ru(II)polypyridine complexes comprising iridium
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/649—Aromatic compounds comprising a hetero atom
- H10K85/654—Aromatic compounds comprising a hetero atom comprising only nitrogen as heteroatom
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/649—Aromatic compounds comprising a hetero atom
- H10K85/657—Polycyclic condensed heteroaromatic hydrocarbons
- H10K85/6576—Polycyclic condensed heteroaromatic hydrocarbons comprising only sulfur in the heteroaromatic polycondensed ring system, e.g. benzothiophene
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/791—Starburst compounds
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1003—Carbocyclic compounds
- C09K2211/1007—Non-condensed systems
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1003—Carbocyclic compounds
- C09K2211/1011—Condensed systems
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1018—Heterocyclic compounds
- C09K2211/1025—Heterocyclic compounds characterised by ligands
- C09K2211/1029—Heterocyclic compounds characterised by ligands containing one nitrogen atom as the heteroatom
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1018—Heterocyclic compounds
- C09K2211/1025—Heterocyclic compounds characterised by ligands
- C09K2211/1029—Heterocyclic compounds characterised by ligands containing one nitrogen atom as the heteroatom
- C09K2211/1037—Heterocyclic compounds characterised by ligands containing one nitrogen atom as the heteroatom with sulfur
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Description
有機発光ダイオード(OLEDs)に基づき、有機エレクトロルミネセント(EL)デバイスとしても知られている発光デバイスは新たに現れたディスプレイ技術である。基本的にはOLEDは薄い有機層または2つの電極間に挟まれた有機層の積層を含むので、電圧を加えると可視または他の光が発光する。少なくとも電極の1つは光に対して透明でなければならない。ディスプレイへの応用では、当該光は当然眼に見えねばならず、それ故少なくとも電極の1つは可視光線に対し透明でなければならない。
本発明によれば、同じコアおよびデンドロン中に同じ繰返し構成単位或いは複数の繰返し構成単位を有する少なくとも2種の異なるデンドリマーAおよびBの混合物を含む組成物を、好ましくは固体状態で提供するが、そこでは一方の前記デンドリマー(A)の前記デンドロンの少なくとも1つの世代が他方の前記デンドリマー(B)中のデンドロンの少なくとも1つの世代と異なるか、または一方の前記デンドリマー中のデンドロン数が、他方の前記デンドリマー中のデンドロン数と異なるかのどちらかであるか、或いは一方の前記デンドリマー(A)中のデンドロンの数およびデンドロンの少なくとも1つの世代の両方が、他方の前記デンドリマー(B)中のデンドロンの数および世代と異なる。
本発明は異なる世代のデンドリマー混合物、それでなければ同じ構造タイプ、即ち同じコアと同じデンドロン構造構成単位を有するデンドリマー混合物の利用に関する。異なるデンドリマーの表面官能基のタイプおよび(または)数については、それらが同じ溶媒への溶解度があれば異なりうる。しかしながら、異なるデンドリマー上の各先端官能基に結合した表面官能基の性質および数は同じであることが好ましい。
CORE−[DENDRITE]n (I)
式中、COREは原子または官能基を表し、nは少なくとも1の整数を表し、DENDRITEは、nが1より大きければ同一でも異なっていてもよく、お互いにアルケニル基の炭素原子を介してアリールまたはヘテロアリール基の環状炭素原子と結合しているアリールおよび(または)ヘテロアリール基およびアルケニル基を含む本質的に少なくとも部分的に共役している樹状分子構造を表しており、COREは1個より多い少なくとも部分的に共役している樹状鎖が結合した(ヘテロ)アリール基の環状炭素と結合している最初の単結合で終結し、前記環状炭素原子はDENDRITEの一部を形成し、当該COREおよび(または)DENDRITEには発光性で、当該デンドロンはPCT/GB02/00765で開示されている一般には式(II)を有しているものとは必ずしも全て同じではないものが含まれている:
CORE−[DENDRITE1]n[DENDRITE2]m (II)
式中ではCOREは原子または官能基を表し、nおよびmは同じかまたは異なっていてもよいが、それぞれ少なくとも1の整数を表し、各DENDRITE1はnが1より大きい場合は同一か異なっていてよくて樹状構造を表し、各DENDRITE2はmが1より大きい場合は同一か異なっていてもよくて樹状構造を表しているが、前記構造の少なくとも1つは完全に共役しており、アリールおよび(または)ヘテロアリール基および場合によりビニル基および(または)アセチレニル基を含み、これが前記(ヘテロ)アリール、ビニルおよびアセチレニル基のsp2またはsp混成した炭素原子を介して結合しており、そしてDENDRITE1における少なくとも1個の分岐点および(または)分岐点間の結合はDENDRITE2におけるのとは異なっており、COREは1より多い共役した樹状分岐が結合している最初の(ヘテロ)アリール基のsp2混成(環状)炭素原子に結合している単結合で終結し、前記環状炭素原子は前記完全共役したDENDRITE1またはDENDRITE2の一部を形成し、COREは他方の前記DENDRITE1またはDENDRITE2の最初の分岐点への単結合で終結し、少なくともCORE、DENDRITE1およびDENDRITE2の1つは発光性であり、これらの式(III)は:
CORE−[DENDRITE]n (III)
式中COREは原子または官能基を表し、nは少なくとも1の整数を表し、各DENDRITEは同一でも異なっていてもよいが、アリールおよび(または)ヘテロアリールおよび場合によりビニルおよび(または)アセチルエニル基を含む本質的に少なくとも部分的に共役した樹状分子構造を表し、前記(ヘテロ)アリール、ビニルおよびアセチルエニル基のsp2またはsp混成炭素原子を介して結合しており、そこでの前記DENDRITE中の隣接分岐点間の結合は必ずしも同じではなく、COREは1つより多い樹状分岐が結合している最初の(ヘテロ)アリール基のsp2混成した(環状)炭素原子に結合している単結合で終結し、前記環状炭素原子は前記DENDRITEの一部を構成し、当該COREおよび(または)DENDRITEは発光性であると共に、そのデンドロンはPCT/GB02/00739で開示したようなアリール−アリール配位子を含むようなもので、一般にそれらは式(IV)を有している:
CORE−[DENDRITE(−Q)a]n (IV)
式中当該COREは原子または官能基を表し、nは少なくとも1の整数を表し、Qはプロトンまたは少なくとも1個のQは表面官能基であるような表面官能基であり、aは整数で、DENDRITEはnが1より大であれば同じでも異なっていてもよいが、お互いに前記アリールまたはヘテロアリール基のsp2混成環状原子間の結合で結合しているアリールおよび(または)ヘテロアリール基を含む共役した樹状構造を表しており、COREは1個より多い共役樹状分岐が結合している(ヘテロ)アリール基のsp2混成環状原子に結合している単結合で終結し、前記原子はDENDRITEの一部を形成し、当該COREおよび(または)DENDRITEは発光性であると共に、典型的には式(V)を有しているPCT/GB01/00750にて開示したような有機金属デンドリマーである:
CORE−[DENDRITE]n (V)
式中COREは金属イオンまたは金属イオンを含有する官能基を表し、nは1以上の整数を表し、各DENDRITEは同じまたは異なっていてもよいが、アリールおよび(または)ヘテロアリール基或いは窒素および場合によりビニルまたはアセチレニル基を含む本質的に少なくとも部分的共役をしている樹状分子構造を表しており、それは前記(ヘテロ)アリールビニルおよびアセチレニル基のsp2またはsp混成炭素原子を介して、またはNと(ヘテロ)アリール基の間の単結合類を介して結合し、COREは最初の(ヘテロ)アリール基のsp2混成(環状)炭素原子、または1より多い少なくとも部分的共役した樹状分岐が結合している窒素に結合した単結合で終結し、前記環状炭素原子またはNは前記DENDRITEの一部を形成し、そして窒素コアはWO01/59030で開示されているデンドリマーを含有し、それは一般に式(VI)を有する:
式中xは3,2、または1で、n1およびn2は同じかまたは異なっていてもよいが0または1から3であり、Xは2価のモノ−またはポリ−芳香族および(または)ヘテロ芳香族部分を表し、Yまたは各Yは同じまたはxが1のときは異なってもよいが水素または場合により置換炭化水素基を表し、Zは芳香族および(または)ヘテロ芳香族基および場合によりアルケニレン基を含む本質的に少なくとも部分的に共役した樹状分子構造を表すが、それはヘテロ芳香族基の炭素原子を介して他の(ヘテロ)芳香族基の環状炭素原子とお互いに結合するか、或いはもしアルケニレン基が存在すれば(ヘテロ)芳香族基の環状炭素原子を介してアルケニレン基の炭素原子と結合し、前記樹状分子構造は1より多い少なくとも部分的共役樹状鎖が結合している(ヘテロ)芳香族基の環状炭素原子を介して当該分子の残りと結合しており、当該デンドリマーの(ヘテロ)芳香族基環の1つ以上は場合により置換されており、全てのY官能基を除いた当該分子のZおよび(または)残余は発光性で、典型的にはxは3でなければならないが、これらに関しての更なる詳細については言及される。
以下を含む緑色発光多層デバイス:
ITO/CBP:(G1:G2、1:2)、80:20重量%/BCP 60nm/LiF 1.2nm/Al 100nm。
ここで第一(G1)および第二(G2)の世代(参照、図2の、4および5)のイリジウムデンドリマーを1:2のモル比で混合し、次に(双極性)電荷輸送材料CBPと重量比20:80で混合した。この発光層に加え、正孔阻止材料BCPの60nm層を当該発光層と当該カソードの間に組入れる。当該デバイスは2〜40cd/m2の明るさを与えながら4〜6Vにおいて35〜39cd/Aの最大電力効率および20〜25 lm/Wの量子効率を示した。当該最大観測輝度は12Vで4000cd/m2であった。当該ターンオン電圧は4.2Vであった。
比較において、デバイス構成ITO/G1 4:CBP/BCP/LiF/Alについて、輝度約1065cd/m2および電圧7.5Vにおいて平均最大電力効率は8 lm/W(17cd/A)であることが分かった。ターンオン電圧は3.5と4.2Vの間で、最大輝度は12Vにおいて16000cd/m2に達した。このデバイスにおけるG1:CBPの重量比は20:80重量%であった。デバイス構成ITO/G2 5:CBP/BCP(60nm)/LiF(1.2nm)/Al(100nm)において、当該効率は明るさ30cd/m2および電圧6Vにおいて23cd/Aであることが分かった。最大輝度は10Vで1000 cd/m2であり、ターンオン電圧は4.4Vであった。G2:CBPの比率はこのデバイスでは46:54重量%であった。
これらの結果から分かるように、G1およびG2の両方を含んでいるOLEDデバイスの効率は、G1だけを含むデバイスまたはG2のみを含むデバイスのどちらの効率より高い。
Claims (10)
- デンドロンの中に同じコアおよび同じ繰返し構成単位または複数の繰返し構成単位を有する少なくとも2種の異なるりん光性有機金属デンドリマーAおよびBの混合物を含み、そこでは一方の前記デンドリマー(A)の世代数は他方の前記デンドリマー(B)の世代数とは異なり、前記デンドリマーAおよびBの全てのデンドロンが本質的に少なくとも部分的に共役しているデンドロンである、電荷輸送性及び(又は)発光性組成物。
- 1つの前記デンドリマーの中にあるデンドロンの世代数が1である、請求項1に記載の組成物。
- 一方の前記デンドリマーの世代数が、他方の前記デンドリマーの世代数より1だけ大きい、請求項1または2に記載の組成物。
- 一方の前記デンドリマーと他方のデンドリマーのモル比が1:1から1:50である、請求項1〜3のいずれか1項に記載の組成物。
- 当該デンドリマーは同じコアおよび同じデンドロンタイプと同じ表面官能基からなる、3種の異なる世代数のデンドリマーを含む、請求項1〜4のいずれか1項に記載の組成物。
- 前記デンドリマーが同じ表面官能基を有している、請求項1〜5のいずれか1項に記載の組成物。
- 任意な基板、電極、一番目の任意な電荷輸送層、発光層、二番目の任意な電荷輸送層および対電極の層を順序正しく含み、そこでは当該発光層、一番目の任意な電荷輸送層および二番目の任意な電荷輸送層の少なくとも1つが、可視光を発することができる請求項1〜6のいずれか1項に記載の電荷輸送性及び(又は)発光性組成物を含む固体膜である、有機発光デバイス。
- 少なくとも1つの電荷輸送層を有する、請求項7に記載のデバイス。
- 当該発光層はまた発光ドーパントを追加の成分として含有する、請求項7または8に記載のデバイス。
- 当該発光層はまた1つ以上の電荷輸送化学種を追加成分として含有する、請求項7から9のいずれか1項に記載のデバイス。
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JP2005537354A (ja) | 2005-12-08 |
US20050247911A1 (en) | 2005-11-10 |
AU2003259378A1 (en) | 2004-03-19 |
EP1534769B1 (en) | 2008-08-06 |
GB0220080D0 (en) | 2002-10-09 |
US7977861B2 (en) | 2011-07-12 |
ATE403692T1 (de) | 2008-08-15 |
DE60322715D1 (de) | 2008-09-18 |
AU2003259378A8 (en) | 2004-03-19 |
WO2004020504A1 (en) | 2004-03-11 |
EP1534769A1 (en) | 2005-06-01 |
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