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TW201632489A - 有機電致發光器件 - Google Patents

有機電致發光器件 Download PDF

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TW201632489A
TW201632489A TW104130201A TW104130201A TW201632489A TW 201632489 A TW201632489 A TW 201632489A TW 104130201 A TW104130201 A TW 104130201A TW 104130201 A TW104130201 A TW 104130201A TW 201632489 A TW201632489 A TW 201632489A
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錦鴻 魯
李哲
陳金鑫
蔡麗菲
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廣東阿格蕾雅光電材料有限公司
北京阿格蕾雅科技發展有限公司
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Abstract

本發明涉及一種有機電致發光器件，包含陽極，陰極，和有機層，所述有機層為空穴注入層、空穴傳輸層、電子注入層、電子傳輸層、發光層中至少包括發光層在內的一層或多層；所述發光層為由主體材料和客體材料組成的主客體摻雜體系，發光層的發光區域為490-750nm，所述主體材料具有式（I）所述結構的化合物，該有機電致器件發紅光或綠光，具有電致發光效率良好和色純度優異以及壽命長的優點。□式（I）

Description

有機電致發光器件
本發明涉及新型的有機主體材料製備的有機電致發光紅光和綠光器件，屬於有機電致發光器件顯示技術領域。
有機電致發光器件作為一種新型的顯示技術，具有自發光、寬視角、低能耗、效率高、薄、色彩豐富、回應速度快、適用溫度範圍廣、低驅動電壓、可製作柔性可彎曲與透明的顯示面板以及環境友好等獨特優點，因此，有機電致發光器件技術可以應用在平板顯示器和新一代照明上，也可以作為LCD的背光源。
有機電子發光器件為在兩個金屬電極之間通過旋塗或者沉積一層有機材料而製備的器件，一個經典的三層有機電致發光器件包含空穴傳輸層，發光層和電子傳輸層。由陽極產生的空穴經空穴傳輸層跟由陰極產生的電子經電子傳輸層結合在發光層形成激子，而後發光。有機電致發光器件可以通過改變發光層的材料來發射紅光，綠光和藍光。因而，穩定的，高效的和色彩純的有機電致發光材料對有機電致發光器件的應用和推廣具有重要作用，同時也是OLEDs大面積面板顯示的應用推廣的迫切需求。
在三原色（紅，藍，綠）當中，紅光和綠光材料最近已經取得了很大的發展，雖然紅光、綠光有機電致發光器件的效能已經得到了明顯提高，也符合面板的市場需求，但其效率和穩定性仍有待進一步提高。因此從材料設計和器件結構來解決上述問題是此領域研究的一個重點。在染料摻雜有機電致發光器件中，主體材料向摻雜發光體的能量轉移效率對器件的效能與穩定性有很大的影響。經常使用的主體材料包括mCP 和26DCzPPy及其衍生物，均含有氮原子。只含碳氫化合物的材料相對穩定性比較高，適合工業上應用以及商品化。對於紅色和綠色螢光染料摻雜器件的主體材料，也有一系列的商品化的材料，其中早期使用較多的為8-羥基喹啉鋁 (Alq3 ) 類化合物，以這類化合物製備的器件具有較高的效率，但是往往這些材料的穩定性比較差，從而無法大量使用。
針對上述器件的缺陷，本發明提供一種電致發光效率良好和色純度優異以及壽命長的有機電致螢光染料摻雜紅光和綠光發光器件。
一種有機電致發光器件，包含陽極，陰極，和有機層，所述有機層為空穴注入層、空穴傳輸層、電子注入層、電子傳輸層、發光層中至少包括發光層在內的一層或多層；所述發光層為由主體材料和客體材料組成的主客體摻雜體系，發光層的發光區域為490-750nm，所述主體材料具有式（I）所述結構的化合物，（I）
其中，R1 -R17 獨立地表示為氫，氘原子，鹵素，氰基，硝基，C1-C8烷基、C1-C8烷氧基，C6-C30的取代或者未取代的芳基，C3-C30的取代或者未取代的含有一個或者多個的雜原子芳基，C2-C8取代或者未取代的烯烷基，C2-C8取代或者未取代的炔烷基，其中，Ar1 -Ar3 獨立地表示C6-C60取代或者未取代的芳基，C3-C60的取代或者未取代的帶有一個或者多個雜原子的雜芳基，三芳香（C6-C30)胺基。
優選：其中，R1 -R17 獨立地表示為氫，鹵素，氰基，硝基，C1-C8烷基、C1-C8烷氧基，C2-C8取代或者未取代的烯烷基，C2-C8取代或者未取代的炔烷基，C1-C4烷基取代或未取代的苯基，C1-C4烷基取代或未取代的萘基，或結合成C1-C4烷基取代或未取代的芴基；Ar1 -Ar3 獨立地表示C1-C4烷基或者C6-C30芳基取代的苯基，C1-C4烷基或者C6-C30芳基取代的萘基，苯基，萘基，吡啶基，N- C6-C30的芳基或者C1-C4的烷基取代的哢唑基，二苯並噻吩基，二苯並呋喃基，蒽基，菲基，芘基，苝基，熒蒽基，（9,9-二烷基）芴基，（9,9-二烷基取代或未取代芳基）芴基，9,9-螺芴基。
優選：其中，R1 -R2 可以獨立地優選表示為氫，鹵素，C1-C4的烷基， C1-C4烷基取代或未取代的苯基，C1-C4烷基取代或未取代的萘基，或結合成C1-C4烷基取代或未取代的芴基；其中，R3 -R17 可以獨立地優選表示為氫，鹵素，C1-C4的烷基， C1-C4烷基取代或未取代的苯基，C1-C4烷基取代或未取代的萘基，優選Ar1 -Ar3 為獨立地表示苯基，甲苯基，二甲苯基，叔丁基苯基，萘基，吡啶基，甲基萘，聯苯基，二苯基苯基，萘基苯基，二苯基聯苯基，二芳香胺基苯基，N-苯基哢唑基，（9,9-二烷基）芴基，（9,9-二烷基取代或未取代苯基）芴基，9,9-螺芴基。
優選：其中，R3 -R17 優選為氫，R1 ，R2 可以獨立優選表示為氫，甲基，乙基，丙基，異丙基，叔丁基，苯基，聯苯基，萘基，或結合成芴基；Ar1 -Ar3 為獨立地表示苯基，吡啶基，甲苯基，二甲苯基，萘基，甲基萘，聯苯基，二苯基苯基，萘基苯基，二苯基聯苯基，（9,9-二烷基）芴基，（9,9-二甲基取代或未取代苯基）芴基，9,9-螺芴基。
優選：R3 -R17 優選為氫；R1 ，R2 為獨立地表示氫，甲基，或結合成芴基；Ar1 ，Ar2 ，Ar3 為獨立地表示苯基，萘基。
優選：式（I）所的化合物為下列結構化合物，，。
所述有機層為空穴注入層，空穴傳輸層，發光層，空穴阻擋層、電子傳輸層中的一層或多層。需要特別指出，上述有機層可以根據需要，這些有機層不必每層都存在。
所述空穴傳輸層，電子傳輸層和/或發光層中含有式（I）所述的化合物。
所述式（I）所述的化合物位於發光層。
本發明的有機電致發光器件包含有一層發光層，該發光層的發光區域在490-750 nm，更優選發射紅光或綠光，紅光範圍在590-750 nm，綠光範圍在490-580 nm。
所述發光層為由主體材料和客體材料組成的主客體摻雜體系。
所述式（I）所述的化合物為主體材料。
在摻雜體系中，其中主體材料的濃度為整個發光層重量的20-99.9%，優選80-99%，更優選為90-99%。而相應地客體材料的濃度為整個發光層重量的0.01-80%，優選1-20%，更優選為1-10%。
本發明的電子器件有機層的總厚度為1-1000 nm，優選1-500 nm，更優選50-300 nm。
所述有機層可以通過蒸渡或旋塗形成薄膜。
如上面提到的，本發明的式（I）所述的化合物如下，但不限於所列舉的結構： 。
本發明中的空穴傳輸層和空穴注入層，所需材料具有很好的空穴傳輸性能，能夠有效地把空穴從陽極傳輸到有機發光層上。除採用本發明的結構式（I）化合物外，還可以包括小分子和高分子有機材料，可以包含如下，但是不限於這些，三芳香胺化合物，聯苯二胺化合物，噻唑化合物，惡唑化合物，咪唑類化合物，芴類化合物，酞菁類化合物，六氰基六雜三苯（hexanitrile hexaazatriphenylene)，2,3,5,6-四氟-7,7',8,8'-四氰二甲基對苯醌（F4-TCNQ），聚乙烯基哢唑，聚噻吩，聚乙烯，聚苯磺酸。
本發明的有機電致發光層，除含有本發明的結構式（I）化合物外，還可以含有如下化合物，但是不限於此，萘類化合物，芘類化合物，芴類化合物，菲類化合物，屈類化合物，熒蒽類化合物，蒽類化合物，並五苯類化合物，苝類化合物，二芳乙烯類化合物，三苯胺乙烯類化合物，胺類化合物，苯並咪唑類化合物，呋喃類化合物，有機金屬螯合物。
本發明的有機電子器件使用的有機電子傳輸材料要求具有很好的電子傳輸性能，能夠有效地把電子從陰極傳輸到發光層中，除含有本發明的結構式（I）化合物外，還可以選擇如下化合物，但是不限於此，氧雜惡唑，噻唑類化合物，三氮唑類化合物，三氮嗪類化合物，三氮雜苯類化合物，喔啉類化合物，二氮蒽類化合物，含矽雜環類化合物，喹啉類化合物，菲囉啉類化合物，金屬螯合物，氟取代苯類化合物。
本發明的有機電子器件根據需要，可以加入一層電子注入層，該電子注入層可以有效的把電子從陰極注入到有機層中，除含有本發明的結構式（I）化合物外，主要選自鹼金屬或者鹼金屬的化合物，或選自鹼土金屬或者鹼土金屬的化合物，可以選擇如下化合物，但是不限於此，鋰，氟化鋰，氧化鋰，氮化鋰，8-羥基喹啉鋰，銫，碳酸銫，8-羥基喹啉銫，鈣，氟化鈣，氧化鈣，鎂，氟化鎂，碳酸鎂，氧化鎂。
器件實驗表明，本發明的有機電致發光器件具有電致發光效率良好和色純度優異以及壽命長的優點。
為了更詳細敘述本發明，特舉以下例子，但是不限於此。
實施例1
中間體1c的合成 向反應燒瓶中加入 1a (240.00 g, 0.88 mol), 1b (496.32 g, 1.76 mol), Pd(PPh3 )4 (20.35g, 17.60 mmol)，碳酸鉀 (302.52 g, 2.20 mol)，甲苯 (2400 mL)，純水 (1200 mL)。抽放氮氣三次後開啟加熱，待反應液溫度達到95-105℃，保持此溫度反應8-12h，取樣TLC及HPLC，原料反應完全。停止加熱，降溫至20-30℃，抽濾，濾液分出有機層，水層再用乙酸乙酯萃取，合併有機層，再用水洗，無水硫酸鎂乾燥，抽濾，濾液濃縮得到暗黃色固體粗產品。石油醚重結晶，得到灰白色固體產品，收率90%，純度95%。
中間體1d的合成 向反應燒瓶中加入相應比例的1c (302 g, 0.78 mol), B(OEt)3 (142 g, 0.97 mol), n-BuLi/THF (1.6 M, 600 mL), 無水THF (3000 mL)，抽放氮氣三次後冷卻降溫至反應液溫度至-75 ~ -65o C，緩慢滴加n-BuLi/THF溶液，控制反應液溫度在-75 ~ -65o C，滴加完畢後，繼續保持此溫度反應0.5-1h。後將一定量的B(OEt)3 滴加進去，控制反應液溫度在-75 ~ -65o C，滴加完畢後，繼續保持此溫度反應0.5-1h，後反應液移至室溫自然升溫反應4 - 6 h，然後加入2M稀鹽酸，調節PH值至2 - 3，攪拌約1h，停止反應。加入乙酸乙酯萃取，水層再用EA萃取，合併有機層，無水硫酸鎂乾燥，抽濾，濾液濃縮得到灰白色固體產品，純度95%，收率62.5%。
中間體1f的合成 向反應燒瓶中加入1d (150g, 0.43mol), 1e (500g, 0.86mol), Pd(PPh3 )4 (5.0 g, 0.44 mmol)，碳酸鉀 (130 g, 0.92 mol)，甲苯 (1000 mL)，純水 (500 mL), 抽放氮氣三次開啟加熱，待反應液溫度達到95-105o C，保持此溫度反應8-12h，取樣TLC及HPLC，原料反應完全。停止加熱，降溫至20-30o C，抽濾，濾液分出有機層，水層再用乙酸乙酯萃取，合併有機層，無水硫酸鎂乾燥，抽濾，濾液濃縮得到暗黃色固體粗產品，純度80%，收率78.1%。
中間體1g的合成 向反應燒瓶中加入 1f (210g, 0.42mol), NBS (135 g, 0.71mol), DMF (5L)。抽放氮氣三次開啟加熱，待反應液溫度達到60-65℃，保持此溫度反應6-8h，取樣TLC及HPLC，原料反應完全。停止加熱，降溫至20-30℃，反應液倒入冰水中，析出暗黃色固體，抽濾得到黃色固體，烘乾得到1g粗產品。粗產品加入DCM/MeOH至溶液稍微變混濁，繼續攪拌約30min，析出大量固體，抽濾，得到淺黃色固體產品，收率約54.05%，純度98.5%1 H NMR (300 MHz, CDCl3 ) δ 8.64 (d,J = 8.8 Hz, 2H), 7.99 – 7.90 (m, 4H), 7.87 (t,J = 1.6 Hz, 1H), 7.78 (dd,J = 9.3, 2.3 Hz, 6H), 7.61 (ddd,J = 8.8, 6.5, 1.1 Hz, 2H), 7.56 – 7.48 (m, 6H), 7.46 – 7.38 (m, 4H).13 C NMR (76 MHz, CDCl3 ) δ 142.67 (s), 142.03 (s), 141.26 (s), 140.69 (s), 137.83 (s), 137.52 (s), 131.87 (s), 131.24 (s), 130.44 (s), 129.09 (s), 128.80 (s), 128.38 – 127.40 (m), 127.18 (s), 126.05 – 125.21 (m), 123.08 (s), 77.74 (s), 77.31 (s), 76.89 (s), 30.10 (s).
化合物1的合成 向500ml三口燒瓶中依次加入1g (9.5g, 16.92mmol), 1h (6.41g, 30.51mmol), Pd(PPh3 )4 (1.5g, 1.3mmol)，碳酸鉀 (5.84g, 42.3mmol)，甲苯 (150 mL)，純水 (75 mL)。抽放氮氣三次後105℃下反應。由液相檢測停反應時間，約12h左右。反應開始時反應液為催化劑的土黃色，之後慢慢變成黃色溶液，停反應後上層為清亮淺黃色，下層為水。停止反應後，過濾，用乙酸乙酯洗濾渣直至濾渣中無產物，收集濾液，旋乾，大量的灰白色固體析出，收集濾渣乾燥，得到目標產物，純度98%。真空昇華得到純度為99.5%灰白色固體粉末。1 H-NMR (300 MHz, CDCl3 ) δ 8.10–8.21 (d，2H)，7.96–7.98 (dd，3H)，7.87–7.89 (m，2H)，7.81–7.86 (m，4H)，7.78–7.81 (d，4H), 7.62–7.65 (m，2H)，7.59 (s，1H)，7.51–7.57 (m，5H)，7.45–7.48 (m，2H)，7.36–7.43 (m，7H)，3.88 (s，2H).
實施例2 化合物3的合成向500ml三口燒瓶中依次加入1g (9.5g, 16.92 mmol), 3a (7.25g, 30.46 mmol), Pd(PPh3 )4 (1.5g, 1.3mmol)，碳酸鉀 (5.84g, 42.3mmol)，甲苯 (150 mL)，純水 (75 mL)。抽放氮氣三次後105℃下反應。由液相檢測停反應時間，約12h左右。反應開始時反應液為催化劑的土黃色，之後慢慢變成黃色溶液，停反應後上層為清亮淺黃色，下層為水。停止反應後，過濾，用乙酸乙酯洗濾渣直至濾渣中無產物，收集濾液，旋乾，大量的灰白色固體析出，收集濾渣乾燥，得到目標產物，純度98%。真空昇華得到純度為99.7%灰白色固體粉末。1 H-NMR (300 MHz, CDCl3 ) δ 8.1–8.2 (d，2H)，7.96–7.99 (dd，3H)，7.88–7.89 (m，2H)，7.81–7.86 (m，4H)，7.78–7.81 (d，4H), 7.61–7.65 (m，2H)，7.59 (s，1H)，7.51–7.56 (m，5H)，7.46–7.48 (m，2H)，7.35–7.43 (m，7H)，1.61 (s，6H).
實施例3 化合物89的合成向反應容器中依次加入1g (10.0 g, 17.8 mmol), 89a (7.1 g, 19.6 mmol), Pd(PPh3 )4 (432.2 mg, 0.35 mmol), K2 CO3 (6.14 g, 44.5 mmol), 甲苯 (300 mL) 和水 (150 mL)，對裝置進行除氧、通入氮氣保護，然後加熱到100℃反應過夜。用DCM：PE=1:5的比例點板，產物點在365 nm波長的紫外燈下發強烈的藍光，Rf值在0.2左右。將反應液用矽膠抽濾，然後將濾餅用乙酸乙酯（100 mL）洗滌兩次，分液，用乙酸乙酯（100 mL）萃取水層一次，合併有機層，再用水（200 mL）洗滌一次有機相。旋乾除去溶劑。粗品用120ml DCM/MeOH重結晶，抽濾得到黃色固體粉末13.1g，純度為98.7%，收率92.2%。真空昇華得到純度為99.7%淺黃色固體粉末。m/z = 797.
從圖2和圖3可見化合物89的氫譜，碳譜與結構完全一致。從圖4化合物89的高效液相色譜圖可見根據本發明的合成方法製備的產物具有高純度。從圖5化合物89的熱重分析圖可見這類型化合物的分解溫度高於攝氏400度，表明其非常高熱穩定性。
實施例4 有機電致發光器件1的製備 使用本發明的有機電致發光器件製備OLED 首先，將透明導電ITO玻璃基板10（上面帶有陽極20）依次經：洗滌劑溶液和去離子水，乙醇，丙酮，去離子水洗淨，再用氧等離子處理30秒。 然後，在ITO上蒸渡10 nm 厚的HAT-CN6 作為空穴注入層30。 然後，蒸渡NPB,形成30 nm厚的空穴傳輸層40。 然後，在空穴傳輸層上蒸渡30 nm厚的C545T(2%)與化合物3(98%)作為發光層50。 然後，在發光層上蒸渡15 nm厚的TPBi作為電子傳輸層60。 最後，蒸渡15 nm BPhen:Li為電子注入層70和150 nm Al作為器件陰極80 。 所製備的器件在20 mA/cm2 的工作電流密度下的電壓為5.57 V，在1000 cd/m2 亮度下電流效率達到7.26 cd/A，發射綠光峰值500 nm。   器件中所述結構式
實施例5 有機電致發光器件2的製備 方法同實施例4, 將化合物3，換成化合物89，製作有機電致發光器件。 所製備的器件在20 mA/cm2 的工作電流密度下的電壓為5.73 V，在1000 cd/m2 亮度下電流效率達到7.81 cd/A，發射綠光峰值504 nm。
實施例6 有機電致發光器件3的製備 方法同實施例4, 將化合物C545T，換成化合物DCJTB，製作有機電致發光器件。 所製備的器件在20 mA/cm2 的工作電流密度下的電壓為7.54 V，在1000 cd/m2 亮度下電流效率達到4.24 cd/A，發射紅光峰值592 nm。
實施例7 有機電致發光器件4的製備 方法同實施例6, 將化合物3，換成化合物89，製作有機電致發光器件。 所製備的器件在20 mA/cm2 的工作電流密度下的電壓為8.23 V，在1000 cd/m2 亮度下電流效率達到3.65 cd/A，發射紅光峰值600 nm。
比較例1 有機電致發光器件5的製備 方法同實施例4，但使用100%化合物3作為發光層50，製作對比用有機電致發光器件。 所製備的器件發射藍色光峰值448 nm。
比較例2 有機電致發光器件6的製備 方法同實施例4，但使用100%化合物89作為發光層50，製作對比用有機電致發光器件。 所製備的器件發射藍色光峰值448 nm。
實施例4,5,6和7是本發明材料的具體應用，所製備的器件1和2發射綠光，器件3和4發射紅光，效率和亮度良好。從實施例4和6的電致發光譜圖與比較例1的電致發光譜圖對比，從主體材料到客體材料的能量轉移非常有效。同樣實施例5和7與比較例2對比也有良好的效果。如上所述，本發明的材料具有高的穩定性，本發明製備的有機電致發光器件具有高的效率和光純度。
10‧‧‧玻璃基板
20‧‧‧陽極
30‧‧‧空穴注入層
40‧‧‧空穴傳輸層
50‧‧‧發光層
60‧‧‧電子傳輸層
70‧‧‧電子注入層
80‧‧‧陰極
圖1 為本發明的器件結構圖。 圖2 為化合物89的1 H NMR圖。 圖3 為化合物89的13 C NMR圖。 圖4 為化合物89的HPLC圖。 圖5 為化合物89的TGA圖。 圖6 為實施例4及實施例5的電壓–電流密度曲線圖。 圖7 為實施例6及實施例7的電壓–電流密度曲線圖。 圖8 為實施例4及實施例5的亮度–電流效率曲線圖。 圖9 為實施例6及實施例7的亮度–電流效率曲線圖。 圖10 為實施例4及實施例5的電致發光光譜。 圖11 為實施例6及實施例7的電致發光光譜。 圖12 為比較例1及比較例2的電致發光光譜。

Claims (12)

  1. 一種有機電致發光器件，包含陽極，陰極，和有機層，所述有機層為空穴注入層、空穴傳輸層、電子注入層、電子傳輸層、發光層中至少包括發光層在內的一層或多層；所述發光層為由主體材料和客體材料組成的主客體摻雜體系，發光層的發光區域為490-750nm，所述主體材料具有式（I）所述結構的化合物，（I） 其中，R1 -R17 獨立地表示為氫，氘原子，鹵素，氰基，硝基，C1-C8烷基、C1-C8烷氧基，C6-C30的取代或者未取代的芳基，C3-C30的取代或者未取代的含有一個或者多個的雜原子芳基，C2-C8取代或者未取代的烯烷基，C2-C8取代或者未取代的炔烷基，其中，Ar1 -Ar3 獨立地表示C6-C60取代或者未取代的芳基，C3-C60的取代或者未取代的帶有一個或者多個雜原子的雜芳基，三芳香（C6-C30)胺基。
  2. 如申請專利範圍第1項所述的有機電致發光器件，其中，R1 -R17 獨立地表示為氫，鹵素，氰基，硝基，C1-C8烷基、C1-C8烷氧基，C2-C8取代或者未取代的烯烷基，C2-C8取代或者未取代的炔烷基，C1-C4烷基取代或未取代的苯基，C1-C4烷基取代或未取代的萘基，或結合成C1-C4烷基取代或未取代的芴基；Ar1 -Ar3 獨立地表示C1-C4烷基或者C6-C30芳基取代的苯基，C1-C4烷基或者C6-C30芳基取代的萘基，苯基，萘基，吡啶基，N- C6-C30的芳基或者C1-C4的烷基取代的哢唑基，二苯並噻吩基，二苯並呋喃基，蒽基，菲基，芘基，苝基，熒蒽基，（9,9-二烷基）芴基，（9,9-二烷基取代或未取代芳基）芴基，9,9-螺芴基。
  3. 如申請專利範圍第2項所述的有機電致發光器件，其中，R1 -R2 可以獨立地優選表示為氫，鹵素，C1-C4的烷基， C1-C4烷基取代或未取代的苯基，C1-C4烷基取代或未取代的萘基，或結合成C1-C4烷基取代或未取代的芴基；其中，R3 -R17 可以獨立地優選表示為氫，鹵素，C1-C4的烷基， C1-C4烷基取代或未取代的苯基，C1-C4烷基取代或未取代的萘基，Ar1 -Ar3 為獨立地表示苯基，甲苯基，叔丁基苯基，萘基，吡啶基，甲基萘，聯苯基，二苯基苯基，萘基苯基，二苯基聯苯基，二芳香胺基苯基，N-苯基哢唑基，（9,9-二烷基）芴基，（9,9-二烷基取代或未取代苯基）芴基，9,9-螺芴基。
  4. 如申請專利範圍第3項所述的有機電致發光器件，其中，R3 -R17 優選為氫，R1 ，R2 可以獨立優選表示為氫，甲基，乙基，丙基，異丙基，叔丁基，苯基，萘基，或結合成芴基；Ar1 -Ar3 為獨立地表示苯基，吡啶基，甲苯基，萘基，甲基萘，聯苯基，二苯基苯基，萘基苯基，二苯基聯苯基，（9,9-二烷基）芴基，（9,9-二甲基取代或未取代苯基）芴基，9,9-螺芴基。
  5. 如申請專利範圍第4項所述的有機電致發光器件，其中，R3 -R17 優選為氫；R1 ，R2 為獨立地表示氫，甲基，或結合成芴基；Ar1 ，Ar2 ，Ar3 為獨立地表示苯基，萘基。
  6. 如申請專利範圍第1項所述的有機電致發光器件，其式（I）所述的化合物為： 。
  7. 如申請專利範圍第6項所述的有機電致發光器件，為下列結構化合物：，，。
  8. 如申請專利範圍第1至7項中之任一項所述的有機電致發光器件，其中，主體材料的濃度為整個發光層重量的20-99.9%，客體材料的濃度為整個發光層重量的0.01-80%。
  9. 如申請專利範圍第8項所述的有機電致發光器件，其中，主體材料的濃度為整個發光層重量的80-99%，客體材料的濃度為整個發光層重量的1-20%。
  10. 如申請專利範圍第9項所述的有機電致發光器件，其中，主體材料為式（I）所示結構的化合物，其濃度為整個發光層重量的90-99%；客體材料的濃度為整個發光層重量的1-10%，所述客體材料為萘類化合物，芘類化合物，芴類化合物，菲類化合物，屈類化合物，熒蒽類化合物，蒽類化合物，並五苯類化合物，苝類化合物，二芳乙烯類化合物，三苯胺乙烯類化合物，胺類化合物，苯並咪唑類化合物，呋喃類化合物，有機金屬螯合物。
  11. 如申請專利範圍第9項所述的有機電致發光器件，其中，所述客體材料為， 發光層的發光區域為紅光590-750 nm； 或者，所述客體材料為， 發光層的發光區域為綠光490-580 nm。
  12. 如申請專利範圍第9項所述的有機電致發光器件，其中，所述式（I）所述的化合物還位於空穴注入層、空穴傳輸層、電子傳輸層和/或電子注入層。
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