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1. 安徽工业大学 冶金与资源学院,安徽 马鞍山,243002
2. 桂林师范高等专科学校 化学与工程技术系,广西 桂林,541001
3. 南京邮电大学信息材料与纳米技术研究院 江苏省有机电子与平板显示重点实验室,江苏 南京,210046
Received:17 December 2011,
Revised:13 February 2012,
Published Online:10 April 2012,
Published:10 April 2012
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童碧海, 梅群波, 韩召, 张业, 董超振. 苯基酞嗪类三环铱配合物的合成及其电致发光性能[J]. 发光学报, 2012,33(4): 394-399
TONG Bi-hai, MEI Qun-bo, HAN Zhao, ZHANG Ye, DONG Chao-zhen. Synthesis and Electroluminescence Properties of Tris-cyclometalated Iridium(Ⅲ) Complex Based on Phenylphthalazine Derivative[J]. Chinese Journal of Luminescence, 2012,33(4): 394-399
童碧海, 梅群波, 韩召, 张业, 董超振. 苯基酞嗪类三环铱配合物的合成及其电致发光性能[J]. 发光学报, 2012,33(4): 394-399 DOI: 10.3788/fgxb20123304.0394.
TONG Bi-hai, MEI Qun-bo, HAN Zhao, ZHANG Ye, DONG Chao-zhen. Synthesis and Electroluminescence Properties of Tris-cyclometalated Iridium(Ⅲ) Complex Based on Phenylphthalazine Derivative[J]. Chinese Journal of Luminescence, 2012,33(4): 394-399 DOI: 10.3788/fgxb20123304.0394.
通过含苯氧基团的苯基酞嗪衍生物配体与IrCl
3
一步反应生成了三环铱配合物Ir(mppppz)
3
。在480 nm光激发下其二氯甲烷溶液的发光波长为608 nm
量子产率约为0.31
磷光寿命为268 ns
其纯固态发光波长为640 nm。配合物的HOMO能级为5.14 eV
LUMO能级为2.91 eV。当Ir(mppppz)
3
以2%的质量分数掺杂于PVK-PBD中做成电致发光器件后
电致发光波长为616 nm。器件的启亮电压为3.9 V
最大外量子效率为1.48%
最大亮度为1 030 cd/m
2
对应的流明效率为0.81 cd/A
所发出的光的色坐标是(0.64
0.35)
接近标准红色。
A new tris-cyclometalated iridium(Ⅲ) complex tris(1-(2
6-dimethylphenoxy) -4-(4-phenoxyphenyl)phthalazine)iridium(Ⅲ) [Ir(mppppz)
3
] was synthesized by the direct reaction of a phenylphthalazine derivative with phenolic groups and IrCl
3
. Under the excitation of 480 nm
complex Ir(mppppz)
3
emitted a strong phosphorescence centered at 608 nm in a CH
2
Cl
2
solution and 640 nm in solid. Its lifetime is 268 ns and quantum yield is approximately 0.31 in a CH
2
Cl
2
solution. The HOMO energy level is 5.14 eV and LUMO is 2.91 eV. The organic light-emitting device based on Ir(mppppz)
3
(2%) exhibits red electrophosphorescence which peaks at 616 nm. The maximum external quantum efficiency is 1.48%
the luminance is 1 030 cd/m
2
and the corresponding efficiency is 0.81 cd/A. The turn-on voltage is 3.9 V with the Commission Internationale de LEclairage (CIE) coordinates of (0.64
0.35).
Chen Z Q, Bian Z Q, Huang C H. Functional IrⅢ complexes and their applications [J]. Adv. Mater., 2010, 22(13):1534-1539.[2] Tong B H, Mei Q B, Wang S J, et al. Nearly 100% internal phosphorescence efficiency in a polymer light-emitting diode using a new iridium complex phosphor [J]. J. Mater. Chem., 2008, 18(14):1636-1639.[3] Luo Kaijun, Jiang Shiping, Wang Xin, 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] Fang Y, Tong B H, Hu S J, et al. A highly efficient tris-cyclometalated iridium complex based on phenylphthalazine derivative for organic light-emitting diodes [J]. Org. Electron., 2009, 10(4):618-622.[5] Fang Y, Hu S J, Meng Y Z, et al. Synthesis of a novel tris-cyclometalated iridium(Ⅲ) complex containing triarylamine unit and its application in OLEDs [J]. Inorg. Chem. Acta, 2009, 362(14):4985-4990.[6] 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).[7] Gao Z Q, Mi B X, Tam H L, et al. High efficiency and small roll-off electrophosphorescence from a new iridium complex with well-matched energy levels [J]. Adv. Mater., 2008, 20(4):774-778.[8] Li X N, Wu Z J, Liu X J, et al. Origin of rare and highly efficient phosphorescent and electroluminescent iridium(Ⅲ) complexes based on C boolean and N=N ligands, A theoretical explanation [J]. J. Phys. Chem. A, 2010, 114(34):9300-9308.[9] Seo J H, Seo J H, Park J H, et al. Highly efficient white organic light-emitting diodes using two emitting materials for three primary colors (red, green, and blue) [J]. Appl. Phys. Lett., 2007, 90(20):203507-1-3.[10] Zhao Q, Liu S J, Li F Y, et al. Multisignaling detection of Hg2+ based on a phosphorescent iridium(Ⅲ) complex [J]. Dalton Trans., 2008(29):3836-3840.[11] Houten J V, Watts R J. Temperature dependence of the photophysical and photochemical properties of the tris(2,2'-bipyridyl)ruthenium(Ⅱ) ion in aqueous solution [J]. J. Amer. Chem. Soc., 1976, 98(16):4853-4858.[12] You Y, Seo J, Kim S H, et al. Highly phosphorescent iridium complexes with chromophoric 2-(2-hydroxyphenyl)oxazole-based ancillary ligands: Interligand energy-harvesting phosphorescence [J]. Inorg. Chem., 2008, 47(5):1476-1487.[13] Baranoff E, Suarez S, Bugnon P, et al. An ester-substituted iridium complex for efficient vacuum-processed organic light-emitting diodes [J]. ChemSusChem., 2009, 2(4):305-308.
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