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1. 发光学及应用国家重点实验室 中国科学院长春光学精密机械与物理研究所,吉林 长春,130033
2. 河南工业大学 理学院,河南 郑州,450001
收稿日期:2011-11-18,
修回日期:2011-12-06,
网络出版日期:2012-02-10,
纸质出版日期:2012-02-10
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张丽英, 李斌, 刘秀英, 王建星. 新型红色磷光铱配合物的合成与电致发光性能[J]. 发光学报, 2012,33(2): 166-170
ZHANG Li-ying, LI Bin, LIU Xiu-ying, WANG Jian-xing. Synthesis and Electroluminescent Properties of A Novel Red-emitting Phosphorescent Iridium Complex[J]. Chinese Journal of Luminescence, 2012,33(2): 166-170
张丽英, 李斌, 刘秀英, 王建星. 新型红色磷光铱配合物的合成与电致发光性能[J]. 发光学报, 2012,33(2): 166-170 DOI: 10.3788/fgxb20123302.0166.
ZHANG Li-ying, LI Bin, LIU Xiu-ying, WANG Jian-xing. Synthesis and Electroluminescent Properties of A Novel Red-emitting Phosphorescent Iridium Complex[J]. Chinese Journal of Luminescence, 2012,33(2): 166-170 DOI: 10.3788/fgxb20123302.0166.
设计并合成了含羟基配体8-苯并噻唑基2-萘酚(HNBT)
并以其为辅助配体、2-苯基吡啶(ppy)为第一配体合成了红色磷光铱配合物Ir(ppy)
2
(NBT)。采用真空蒸镀的方法
以Ir(ppy)
2
(NBT)为发光中心制备了红色有机电致磷光器件
详细研究了配合物Ir(ppy)
2
(NBT)的热稳定性、光物理与电致发光性能。值得注意的是
配合物Ir(ppy)
2
(NBT)的发射谱图近似于高斯形状
只有一个位于614 nm的发射主峰
没有肩峰出现
且半峰宽仅为65 nm;此外
基于配合物Ir(ppy)
2
(NBT)的最佳器件的最大亮度和效率分别是6 400 cd/m
2
和4.53 cd/A。
A novel ancillary ligand (2-(1-hydroxy-naphthyl)-benzothiozolato) (HNBT) and the corresponding red emitting phosphorescent iridium(Ⅲ) complex
Ir(ppy)
2
(NBT) with 2-phenylphridine(ppy) as first ligand are designed and synthesized. Saturated red-emitting electrophosphorescent devices using Ir(ppy)
2
(NBT) as emission center are fabricated. The thermal
photophysical
and electroluminescent properties of Ir(ppy)
2
(NBT) are investigated in detail. It is noteworthy that the emission spectrum shape of complex Ir(ppy)
2
(NBT) is similar to Gauss
which has only one emission peak centralized 614 nm with a full-width at half-maximum of 65 nm. The optimized device exhibits a maximum brightness of 6 400 cd/m
2
and the peak current efficiency is 4.53 cd/A.
Chen X, Liao J L, Liang Y, et al. High-efficiency red-light emission from polyfluorenes grafted with cyclometalated iridium complexes and charge transport moiety [J]. J. Am. Chem. Soc., 2003, 125(3):636-637.[2] Spellane P, Watts R J, Vogler A. Luminescence characterizations of cyclometalated rhenium(I) carbonyl complexes [J]. Inorg. Chem., 1993, 32(24):5633-5636.[3] Luo K J, Jiang S P, Wang X, et al. Efficient green phosphorescent polymer light-emitting diodes based on cyclometalated iridium complex [J]. Chin. J. Lumin.(发光学报), 2011, 32(4):368-373 (in English).[4] Chen C H, Shi J. Metal chelates as emitting materials for organic electroluminescence [J]. Coord. Chem. Rev., 1998, 171:161-174.[5] An Y, Xu M L, Wang Z J, et al. Synthesis of novel blue light emitting 9,9'-bianthracene derivatives and their ophtoelectronic properties [J]. Chin. J. Lumin.(发光学报), 2011, 32(9):890-895 (in Chinese).[6] Kappaun S, Rentenberger S, Pogantsch A, et al. Organoboron quinolinolates with extended conjugated chromophores: Synthesis, structure, and electronic and electroluminescent properties [J]. Chem. Mater., 2006, 18:3539-3547.[7] Luo K J, Jiang S P, Wang X, et al. Efficient green phorescent polymer light-emitting diodes based on cyclometalated iridium complex [J]. Chin. J. Lumin.(发光学报), 2011, 32(4):368-373 (in English).[8] Zhou Rui, Song Xinchao, Tian Jie, et al. Synthesis and spectroscopic properties of new blue-phosphorescent iridium complexes based on 2-difluorophenyl-4-methylpyridine and 2-(pyridyl-2-yl) imidazole as ligands [J]. Chin.J. Lumin.(发光学报), 2010, 31(2):279-284 (in Chinese).[9] Kappaun S, Sax S, Eder S, et al. List, 8-quinolinolates as ligand for luminescent cyclometalated iridium complexes [J]. Chem. Mater., 2007, 19(6):1209-1211.[10] Ghedini M, Aiello I, Deda M L, et al. Mixed 2-phenylpyridine and 5-substitued-8-hydroxyquinolines palladium(Ⅱ) complexes: new emitters in solutions at room temperature [J]. Chem. Commun., 2003, 39(17):2198-2199.[11] Shavaleev N M, Adams H, Best J, et al. Deep-red luminescence and efficient singlet oxygen generation by cyclometalated platinum(Ⅱ) complexes with 8-hydroxyquinolines and quinoline-8-thiol [J]. Inorg. Chem., 2006, 45(23):9410-9415.[12] Ballardini R, Varani G, Indelli M T, et al. Phosphorescent 8-quinolinol metal chelates. Excited-state properties and redox behavior [J]. Inorg. Chem., 1986, 25(22):3858-3865.[13] Zhang L Y, Li B, Zhang L M, et al. A saturated red-emitting phosphorescent iridium complex for application in organic light emitting diodes [J]. J. Elect. Soci., 2011, 158(8):J243-245.[14] Kappaun S, Eder S, Sax S, et al. WPLEDs prepared from main-chain fluorene-iridium(Ⅲ) polymers [J]. J. Mater. Chem., 2006, 16:4389-4392.
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