JP2017533575A - ポリマー電荷移送層及びそれを含む有機電子装置 - Google Patents
ポリマー電荷移送層及びそれを含む有機電子装置 Download PDFInfo
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- JP2017533575A JP2017533575A JP2017508642A JP2017508642A JP2017533575A JP 2017533575 A JP2017533575 A JP 2017533575A JP 2017508642 A JP2017508642 A JP 2017508642A JP 2017508642 A JP2017508642 A JP 2017508642A JP 2017533575 A JP2017533575 A JP 2017533575A
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- Prior art keywords
- substituted
- heterohydrocarbyl
- hydrocarbyl
- monomer
- transport layer
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- 239000000178 monomer Substances 0.000 claims abstract description 66
- 239000002019 doping agent Substances 0.000 claims abstract description 18
- 239000004971 Cross linker Substances 0.000 claims abstract description 13
- 125000001183 hydrocarbyl group Chemical group 0.000 claims description 71
- 125000001072 heteroaryl group Chemical group 0.000 claims description 69
- 125000003118 aryl group Chemical group 0.000 claims description 52
- 125000005842 heteroatom Chemical group 0.000 claims description 27
- 125000003107 substituted aryl group Chemical group 0.000 claims description 21
- 239000000203 mixture Substances 0.000 claims description 18
- 125000003636 chemical group Chemical group 0.000 claims description 12
- 229910052739 hydrogen Inorganic materials 0.000 claims description 10
- 239000001257 hydrogen Substances 0.000 claims description 10
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical compound [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 claims description 8
- 125000004093 cyano group Chemical group *C#N 0.000 claims description 8
- 229910052805 deuterium Inorganic materials 0.000 claims description 8
- 229910052736 halogen Inorganic materials 0.000 claims description 8
- 150000002367 halogens Chemical class 0.000 claims description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 5
- 150000002431 hydrogen Chemical class 0.000 claims description 5
- GJVFBWCTGUSGDD-UHFFFAOYSA-L pentamethonium bromide Chemical compound [Br-].[Br-].C[N+](C)(C)CCCCC[N+](C)(C)C GJVFBWCTGUSGDD-UHFFFAOYSA-L 0.000 claims description 5
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- 125000002221 trityl group Chemical group [H]C1=C([H])C([H])=C([H])C([H])=C1C([*])(C1=C(C(=C(C(=C1[H])[H])[H])[H])[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 claims description 3
- 125000001831 (C6-C10) heteroaryl group Chemical group 0.000 claims description 2
- OJOSABWCUVCSTQ-UHFFFAOYSA-N cyclohepta-2,4,6-trienylium Chemical group C1=CC=C[CH+]=C[CH]1 OJOSABWCUVCSTQ-UHFFFAOYSA-N 0.000 claims description 2
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- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 8
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- 125000005428 anthryl group Chemical group [H]C1=C([H])C([H])=C2C([H])=C3C(*)=C([H])C([H])=C([H])C3=C([H])C2=C1[H] 0.000 description 4
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- 229910052782 aluminium Inorganic materials 0.000 description 3
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- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
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- 150000003839 salts Chemical class 0.000 description 3
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- CXWXQJXEFPUFDZ-UHFFFAOYSA-N tetralin Chemical compound C1=CC=C2CCCCC2=C1 CXWXQJXEFPUFDZ-UHFFFAOYSA-N 0.000 description 3
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- MNCMBBIFTVWHIP-UHFFFAOYSA-N 1-anthracen-9-yl-2,2,2-trifluoroethanone Chemical group C1=CC=C2C(C(=O)C(F)(F)F)=C(C=CC=C3)C3=CC2=C1 MNCMBBIFTVWHIP-UHFFFAOYSA-N 0.000 description 2
- 125000001637 1-naphthyl group Chemical group [H]C1=C([H])C([H])=C2C(*)=C([H])C([H])=C([H])C2=C1[H] 0.000 description 2
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- 125000002078 anthracen-1-yl group Chemical group [H]C1=C([H])C([H])=C2C([H])=C3C([*])=C([H])C([H])=C([H])C3=C([H])C2=C1[H] 0.000 description 2
- 125000000748 anthracen-2-yl group Chemical group [H]C1=C([H])C([H])=C2C([H])=C3C([H])=C([*])C([H])=C([H])C3=C([H])C2=C1[H] 0.000 description 2
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- 239000012044 organic layer Substances 0.000 description 1
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- 239000002244 precipitate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000425 proton nuclear magnetic resonance spectrum Methods 0.000 description 1
- 150000003346 selenoethers Chemical class 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
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- 150000003384 small molecules Chemical group 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
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- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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- 238000010023 transfer printing Methods 0.000 description 1
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Abstract
Description
nは、2〜10であり、
R1〜R3はそれぞれ独立して、以下:水素;重水素;ヒドロカルビル、さらにC1−C100ヒドロカルビル、さらにC3−C100ヒドロカルビル、さらにC10−C100ヒドロカルビル、さらにC20−C100ヒドロカルビル、さらにC30−C100ヒドロカルビル;置換ヒドロカルビル、さらにC1−C100置換ヒドロカルビル、さらにC3−C100置換ヒドロカルビル、さらにC10−C100置換ヒドロカルビル、さらにC20−C100置換ヒドロカルビル、さらにC30−C100置換ヒドロカルビル;ヘテロヒドロカルビル、さらにC1−C100ヘテロヒドロカルビル、さらにC3−C100ヘテロヒドロカルビル、さらにC10−C100ヘテロヒドロカルビル、さらにC20−C100ヘテロヒドロカルビル、さらにC30−C100ヘテロヒドロカルビル;置換ヘテロヒドロカルビル、さらにC1−C100置換ヘテロヒドロカルビル、さらにC3−C100置換ヘテロヒドロカルビル、さらにC10−C100置換ヘテロヒドロカルビル、さらにC20−C100置換ヘテロヒドロカルビル、さらにC30−C100置換ヘテロヒドロカルビル;ハロゲン;シアノ;アリール、さらにC5−C100アリール、さらにC6−C100アリール、さらにC10−C100アリール、さらにC20−C100アリール、さらにC30−C100アリール;置換アリール、さらにC5−C100置換アリール、さらにC6−C100置換アリール、さらにC10−C100置換アリール、さらにC20−C100置換アリール、さらにC30−C100置換アリール;ヘテロアリール、さらにC5−C100ヘテロアリール、さらにC6−C10ヘテロアリール、さらにC10−C100ヘテロアリール、さらにC20−C100ヘテロアリール、さらにC30−C100ヘテロアリール;置換ヘテロアリール、さらにC5−C100置換ヘテロアリール、さらにC6−C100置換ヘテロアリール、さらにC10−C100置換ヘテロアリール、さらにC20−C100置換ヘテロアリール、さらにC30−C100置換ヘテロアリールから選択され、
L1は、ヘテロ原子、芳香族部分、ヘテロ芳香族部分、C1−C100ヒドロカルビル、C1−C100置換ヒドロカルビル、C1−C100ヘテロヒドロカルビル、及びC1−C100置換ヘテロヒドロカルビルから選択され、
R1〜R3のうちの2つ以上は、1つ以上の環構造を任意に形成し得る。
R4〜R6はそれぞれ独立して、以下:水素、重水素、C1−C50ヒドロカルビル、C1−C50置換ヒドロカルビル、C1−C50ヘテロヒドロカルビル、C1−C50置換ヘテロヒドロカルビル、ハロゲン、シアノ、C5−C50アリール、C5−C50置換アリール、C5−C50ヘテロアリール、C5−C50置換ヘテロアリールから選択され、
L2が、ヘテロ原子、芳香族部分、ヘテロ芳香族部分、C1−C100ヒドロカルビル、C1−C100置換ヒドロカルビル、C1−C100ヘテロヒドロカルビル、またはC1−C100置換ヘテロヒドロカルビルから選択され、
mは、2〜25であり、
L2の各化学基は、Cに独立して結合され、
R4〜R6のうちの2つ以上は、1つ以上の環構造を任意に形成し得る。
ポリマーは、構造Aを有するモノマーAを含み、
nは、2〜10であり、
R1〜R3はそれぞれ独立して、以下:水素;重水素;ヒドロカルビル、さらにC1−C100ヒドロカルビル、さらにC3−C100ヒドロカルビル、さらにC10−C100ヒドロカルビル、さらにC20−C100ヒドロカルビル、さらにC30−C100ヒドロカルビル;置換ヒドロカルビル、さらにC1−C100置換ヒドロカルビル、さらにC3−C100置換ヒドロカルビル、さらにC10−C100置換ヒドロカルビル、さらにC20−C100置換ヒドロカルビル、さらにC30−C100置換ヒドロカルビル;ヘテロヒドロカルビル、さらにC1−C100ヘテロヒドロカルビル、さらにC3−C100ヘテロヒドロカルビル、さらにC10−C100ヘテロヒドロカルビル、さらにC20−C100ヘテロヒドロカルビル、さらにC30−C100ヘテロヒドロカルビル;置換ヘテロヒドロカルビル、さらにC1−C100置換ヘテロヒドロカルビル、さらにC3−C100置換ヘテロヒドロカルビル、さらにC10−C100置換ヘテロヒドロカルビル、さらにC20−C100置換ヘテロヒドロカルビル、さらにC30−C100置換ヘテロヒドロカルビル;ハロゲン;シアノ;アリール、さらにC5−C100アリール、さらにC6−C100アリール、さらにC10−C100アリール、さらにC20−C100アリール、さらにC30−C100アリール;置換アリール、さらにC5−C100置換アリール、さらにC6−C100置換アリール、さらにC10−C100置換アリール、さらにC20−C100置換アリール、さらにC30−C100置換アリール;ヘテロアリール、さらにC5−C100ヘテロアリール、さらにC6−C100ヘテロアリール、さらにC10−C100ヘテロアリール、さらにC20−C100ヘテロアリール、さらにC30−C100ヘテロアリール;置換ヘテロアリール、さらにC5−C100置換ヘテロアリール、さらにC6−C100置換ヘテロアリール、さらにC10−C100置換ヘテロアリール、さらにC20−C100置換ヘテロアリール、さらにC30−C100置換ヘテロアリールから選択され、
L1は、ヘテロ原子、芳香族部分、ヘテロ芳香族部分、C1−C100ヒドロカルビル、C1−C100置換ヒドロカルビル、C1−C100ヘテロヒドロカルビル、及びC1−C100置換ヘテロヒドロカルビルから選択され、
R1〜R3のうちの2つ以上は、1つ以上の環構造を任意に形成し得る。
L3は、ヘテロ原子、芳香族部分、ヘテロ芳香族部分、C1−C100ヒドロカルビル、C1−C100置換ヒドロカルビル、C1−C100ヘテロヒドロカルビル、及びC1−C100置換ヘテロヒドロカルビルから選択され、
xは、2〜10であり、
R7〜R9はそれぞれ独立して、以下:水素、重水素、C1−C50ヒドロカルビル、C1−C50置換ヒドロカルビル、C1−C50ヘテロヒドロカルビル、C1−C50置換ヘテロヒドロカルビル、ハロゲン、シアノ、C5−C50アリール、C5−C50置換アリール、C5−C50ヘテロアリール、及びC5−C50置換ヘテロアリールから選択され、
R7〜R9のうちの2つ以上は、1つ以上の環構造を任意に形成し得る。
R4〜R6はそれぞれ独立して、以下:水素、重水素、C1−C50ヒドロカルビル、C1−C50置換ヒドロカルビル、C1−C50ヘテロヒドロカルビル、C1−C50置換ヘテロヒドロカルビル、ハロゲン、シアノ、C5−C50アリール、C5−C50置換アリール、C5−C50ヘテロアリール、C5−C50置換ヘテロアリールから選択され、
L2は、ヘテロ原子、芳香族部分、ヘテロ芳香族部分、C1−C100ヒドロカルビル、C1−C100置換ヒドロカルビル、C1−C100ヘテロヒドロカルビル、またはC1−C100置換ヘテロヒドロカルビルから選択され、
mは、2〜25であり、
L2の各化学基は、Cに独立して結合され、
R4〜R6のうちの2つ以上は、1つ以上の環構造を任意に形成し得る。
一実施形態では、p−ドーパントは、ロピリウム塩、イミダゾリウム塩、及びトリチル塩から選択される。
本発明は、有機電子装置を作製する方法を提供する。本方法は、ポリマー電荷移送層溶液を提供することと、溶液プロセスによる有機電子装置の製造において使用されることが既知であるか、または提案されている有機溶媒のいずれかに、ポリマー電荷移送層溶液を溶解または分散させることと、を含む。そのような有機溶媒には、テトラヒドロフラン(THF)、シクロヘキサノン、クロロホルム、1,4−ジオキサン、アセトニトリル、酢酸エチル、テトラリン、クロロベンゼン、トルエン、キシレン、アニソール、メシチレン、テトラロン、及びこれらの任意の組み合わせが挙げられる。ポリマー電荷移送層溶液を膜またはフィルターを通して濾過して、50nmよりも大きい粒子を除去した。
「ジエノフィル」という用語は、2π−電子を持ち、ディールス・アルダー付加環化反応に関与し得る分子を指す。この例には、アルケン、アルキン、ニトリル、エノールエーテル、及びエナミンが挙げられる。
全ての溶媒及び試薬を商業用供給元、例えば、Sigma−Aldrich,TCI及びAlfa Aesarから得て、可能な限りの最高純度で使用するか、及び/または必要に応じて使用前に再結晶化させた。室内精製/分配システムから乾燥溶媒を得た(ヘキサン、トルエン、及びテトラヒドロフラン)、またはSigma−Aldrichから購入した。「水に敏感な化合物」に関わる全ての実験は、「炉乾燥」ガラス器内で、窒素雰囲気下で、またはグローブボックス内で行われた。
1.N−([1,1'−ビフェニル]−4−イル)−9,9−ジメチル−N−(4−(4,4,5,5−テトラメチル−1,3,2−ジオキサボロラン−2−イル)フェニル)−9H−フルオレン−2−アミン(式1)の合成
モノマーAの化学物質(モノマーA24、657.1mg、0.697mmol)、モノマーBの化学物質(モノマーB4、479.7mg、0.494mmol)、及びトリス(4'−ビニル−[1,1'−ビフェニル]−4−イル)アミン(モノマーC6)(72.7mg、0.132mmol、99.6%純度)の混合物を、1.2mLの電子アニソールに溶解させて、10重量%の溶液を作製した。上述の溶液のB段階化を、窒素雰囲気下、105℃で5時間かけて行った。室温への冷却後、B段階HTL溶液を電子溶媒で4重量%に希釈した。次いで、等量の電子メタノールをB段階HTL溶液に添加して、HTLポリマーを溶液から沈殿させた。次いで、B段階HTLポリマーを濾過によって収集し、40℃の真空炉内で一晩乾燥させた。結果として生じるB段階HTLポリマーを、電子アニソール中に再溶解させて、4重量%の溶液を作製し、上述の沈殿をもう一度繰り返して、残余HTLモノマーを完全に除去した。最後に、0.71g(59%の収率)のB段階HTLポリマー生成物を、黄色結晶様固体の形態で収集した。表1は、沈殿前後のB段階HTLポリマー分子量及び分布を示した。B段階HTLポリマーの分子量分布は、2×103g/モル(二量体)〜1×106g/モルの範囲で、非常に広範であったことに留意する価値がある。
酸化インジウムスズ(ITO)ガラス基板(2*2cm)を溶媒エタノール、溶媒アセトン、及び溶媒イソプロパノールで連続して洗浄し、次いでUVオゾン洗浄剤で15分間処理した。Plextronics Companyからの正孔注入層(HIL)材料Plexcore(商標)OC AQ−1200は、グローブボックス内で水溶液からITO基板にスピンコーティングし、150℃で20分間焼鈍した。その後、比較蒸発性HTL、N−([1,1'−ビフェニル]−4−イル)−9,9−ジメチル−N−(4−(9−フェニル−9H−カルバゾール−3−イル)フェニル)−9H−フルオレン−2−アミンについては、基板を、HTL、放出材料層(EML)、電子移送層(ETL)、及びカソードの堆積のために熱蒸発器に移し、溶液プロセスのための本発明のHTLについては、アニソール溶液からHTL材料(B段階HTLポリマー)を堆積させ、150℃で10分間焼鈍して、有機溶媒を除去した。その後、B段階材料の架橋を、205℃で5分間、グローブボックス内のホットプレート上で行った。次いで、後続する燐光緑色(Ph−Green)EML、ETL、及びカソードを連続して堆積させた。最後に、装置を試験前に密封した。
装置A:ITO/AQ−1200/比較HTL(蒸発、800Å)/EML/ETL/Al、
装置B:ITO/AQ−1200/B段階HTL(架橋せず、400Å)/EML/ETL/Al、
装置C:ITO/AQ−1200/B段階HTL(架橋、390Å)/EML/ETL/Al、
装置D:ITO/AQ−1200/10%のp−ドーパントを有するB段階HTL(架橋、290Å)/EML/ETL/Al。
OLED装置の電流−電位−輝度(J−V−L)特性、つまり、駆動電位(V)、輝度効率(Cd/A)、及び1000ニトかつ50mA/cm2の輝度での国際照明委員会(CIE)データ、ならびに15000ニトでの10時間の寿命を、Konica Minolta CompanyからのKeithly(商標)238 High Current Source−Measurement Unit及びCS−100A Color and Luminance Meterで実施し、表2に列挙した。OLED装置のエレクトロルミネセンス(EL)スペクトを、較正CCD分光器によって収集し、4つ全てのOLED装置実施例について516nmで固定した。
Claims (15)
- ポリマー電荷移送層であって、前記組成物の総重量に基づいて、1重量%〜20重量%のp−ドーパント成分と、重合単位として、モノマーA及びモノマーC架橋剤を含むポリマーと、を含む組成物から形成され、モノマーAが、構造Aを有し、
nが、2〜10であり、
R1〜R3がそれぞれ独立して、以下:水素;重水素;ヒドロカルビル、さらにC1−C100ヒドロカルビル、さらにC3−C100ヒドロカルビル、さらにC10−C100ヒドロカルビル、さらにC20−C100ヒドロカルビル、さらにC30−C100ヒドロカルビル;置換ヒドロカルビル、さらにC1−C100置換ヒドロカルビル、さらにC3−C100置換ヒドロカルビル、さらにC10−C100置換ヒドロカルビル、さらにC20−C100置換ヒドロカルビル、さらにC30−C100置換ヒドロカルビル;ヘテロヒドロカルビル、さらにC1−C100ヘテロヒドロカルビル、さらにC3−C100ヘテロヒドロカルビル、さらにC10−C100ヘテロヒドロカルビル、さらにC20−C100ヘテロヒドロカルビル、さらにC30−C100ヘテロヒドロカルビル;置換ヘテロヒドロカルビル、さらにC1−C100置換ヘテロヒドロカルビル、さらにC3−C100置換ヘテロヒドロカルビル、さらにC10−C100置換ヘテロヒドロカルビル、さらにC20−C100置換ヘテロヒドロカルビル、さらにC30−C100置換ヘテロヒドロカルビル;ハロゲン;シアノ;アリール、さらにC5−C100アリール、さらにC6−C100アリール、さらにC10−C100アリール、さらにC20−C100アリール、さらにC30−C100アリール;置換アリール、さらにC5−C100置換アリール、さらにC6−C100置換アリール、さらにC10−C100置換アリール、さらにC20−C100置換アリール、さらにC30−C100置換アリール;ヘテロアリール、さらにC5−C100ヘテロアリール、さらにC6−C10ヘテロアリール、さらにC10−C100ヘテロアリール、さらにC20−C100ヘテロアリール、さらにC30−C100ヘテロアリール;置換ヘテロアリール、さらにC5−C100置換ヘテロアリール、さらにC6−C100置換ヘテロアリール、さらにC10−C100置換ヘテロアリール、さらにC20−C100置換ヘテロアリール、さらにC30−C100置換ヘテロアリールから選択され、
L1が、ヘテロ原子、芳香族部分、ヘテロ芳香族部分、C1−C100ヒドロカルビル、C1−C100置換ヒドロカルビル、C1−C100ヘテロヒドロカルビル、及びC1−C100置換ヘテロヒドロカルビルから選択され、
R1〜R3のうちの2つ以上が、1つ以上の環構造を任意に形成し得、
モノマーC架橋剤が、構造Cを有し、
R4〜R6がそれぞれ独立して、以下:水素、重水素、C1−C50ヒドロカルビル、C1−C50置換ヒドロカルビル、C1−C50ヘテロヒドロカルビル、C1−C50置換ヘテロヒドロカルビル、ハロゲン、シアノ、C5−C50アリール、C5−C50置換アリール、C5−C50ヘテロアリール、C5−C50置換ヘテロアリールから選択され、
L2が、ヘテロ原子、芳香族部分、ヘテロ芳香族部分、C1−C100ヒドロカルビル、C1−C100置換ヒドロカルビル、C1−C100ヘテロヒドロカルビル、またはC1−C100置換ヘテロヒドロカルビルから選択され、
mが、2〜25であり、
L2の各化学基が、Cに独立して結合され、
R4〜R6のうちの2つ以上が、1つ以上の環構造を任意に形成し得、
前記p−ドーパントが、トロピリウム塩、イミダゾリウム塩、及びトリチル塩から選択される、ポリマー電荷移送層。 - 前記ポリマーが、構造Bを有するモノマーBをさらに含み、
xが、2〜10であり、
L3が、ヘテロ原子、芳香族部分、ヘテロ芳香族部分、C1−C100ヒドロカルビル、C1−C100置換ヒドロカルビル、C1−C100ヘテロヒドロカルビル、及びC1−C100置換ヘテロヒドロカルビルから選択され、
R7〜R9がそれぞれ独立して、以下:水素、重水素、C1−C50ヒドロカルビル、C1−C50置換ヒドロカルビル、C1−C50ヘテロヒドロカルビル、C1−C50置換ヘテロヒドロカルビル、ハロゲン、シアノ、C5−C50アリール、C5−C50置換アリール、C5−C50ヘテロアリール、及びC5−C50置換ヘテロアリールから選択され、
R7〜R9のうちの2つ以上が、1つ以上の環構造を任意に形成し得る、請求項1に記載のポリマー電荷移送層。 - モノマーC架橋剤が、モノマーAの総モルに基づいて、0.1〜50モル%である、請求項1に記載のポリマー電荷移送層。
- モノマーA対モノマーBのモル比が、0.8〜1.2である、請求項2に記載のポリマー電荷移送層。
- モノマーA、モノマーB、及びモノマーCのうちのいずれかが、500g/モル〜28000g/モルの分子量を有する、請求項2に記載のポリマー電荷移送層。
- モノマーA及びモノマーCのうちのいずれかが、99%以上の純度を有する、請求項1に記載のポリマー電荷移送層。
- モノマーA、モノマーB、及びモノマーCのうちのいずれかが、99%以上の純度を有する、請求項2に記載のポリマー電荷移送層。
- 請求項1に記載のポリマー電荷移送層を備える、有機発光装置。
- 請求項1に記載のポリマー電荷移送層を備える、有機電子装置。
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WO2016026265A1 (en) | 2016-02-25 |
US20180226584A1 (en) | 2018-08-09 |
EP3183761A4 (en) | 2018-04-25 |
US10454036B2 (en) | 2019-10-22 |
JP6613298B2 (ja) | 2019-11-27 |
CN106575718A (zh) | 2017-04-19 |
KR20170043558A (ko) | 2017-04-21 |
WO2016026266A1 (en) | 2016-02-25 |
KR20170102489A (ko) | 2017-09-11 |
EP3183761A1 (en) | 2017-06-28 |
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