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一种吡嗪铱(Ⅲ)配合物的晶体结构及光物理性质 被引量:3

Crystal Structure and Photophysical Properties of an Iridium(Ⅲ)Pyrazine Complex
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摘要 合成了一种铱配合物二(4,4'-二氟-5-甲基-2,3-二苯基吡嗪)(乙酰丙酮)合铱[(MDPPF)2Ir(acac)]的有机电致发光器件(OLED),利用X射线单晶衍射仪测定了该化合物的晶体结构.利用紫外-可见吸收光谱、发射光谱对其光物理性质进行研究.结果表明:(MDPPF)2Ir(acac)的单晶结构属于三斜晶系,P1空间群,晶胞参数a=1.13984(3)nm,b=1.26718(3)nm,c=1.29541(3)nm,α=93.7181(19)°,β=101.638(2)°,γ=110.853(3)°,V=1.69336(7)nm3;(MDPPF)2Ir(acac)在二氯甲烷溶液中的发射峰为555 nm.以(MDPPF)2Ir(acac)为客体材料,制备了结构为ITO/NPB(40 nm)/CBP:(MDPPF)2Ir(acac)(20 nm)/TPBi(10 nm)/Alq3(30 nm)/Li F(1 nm)/Al(100 nm)的一系列不同掺杂浓度器件,器件的发射峰位于558 nm,最大亮度达到32700 cd·m-2,最大电流效率44.3 cd·A-1,最大功率效率20.7 lm·W-1. An iridium(Ⅲ) complex of (MDPPF)21r(acac) (MDPPF=4,4'-difluoro-5-methyl-2,3-diphenylpyrazine, acac=acetylacetone) has been prepared and characterized by X-ray single crystal diffraction. The photophysical properties of (MDPPF)21r(acac) were investigated using UV-Vis spectroscopy and photoluminescence (PL) techniques. X-ray diffraction (XRD) studies revealed that the complex belongs to a triclinic system of the P1 space group with cell dimensions a=l. 13984(3) nm, b=1.26718(3) nm, c=1.29541 (3) nm, cr=93.7181 (19)°,/3= 101.638(2)°, γ=110.853(3)° and V=1.69336(7) nm^3. A solution of the (MDPPF)21r(acac) complex in dichloromethane was found to emit yellow light with a maximum peak at 555 nm at room temperature. Furthermore, (MDPPF)21r(acac) was used as a phosphorescence dopant in organic light-emitting diodes (OLEDs) with the structures of ITO/NPB (40 nm)/CBP:(MDPPF)21r(acac) (20 nm)/TPBi (10 nm)/Alq3 (30 nm)/LiF (1 nm)/Al (100 nm). These devices showed yellow emission at 558 nm, a maximum brightness of 32700 cd· m^-2, current efnciency of 44.7 cd· A^-1 and power efficiency of 20.7 Im·W^-1.
出处 《物理化学学报》 SCIE CAS CSCD 北大核心 2015年第1期17-22,共6页 Acta Physico-Chimica Sinica
基金 宁波市自然科学基金(2010A610164,2010A610187) 宁波市重大择优委托项目(2012C5002) 宁波大学王宽城基金资助~~
关键词 铱(Ⅲ)配合物 吡嗪 磷光材料 有机电致发光器件 Iridium(Ill) complex Pyrazine Phosphorescent material Organiclight-emitting diode
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  • 1Demas, J. N.; DeGraff, B. A. Coord. Chem. Rev. 2001, 211,317.
  • 2Cheng, Y. W.; Yang, Z.; Wei, H.; Wang, Y. Y.; Wei, L. M.; Zhang, Y. F. Acta Phys. -Chim. Sin. 2010, 26, 3127.
  • 3Li, M. J.; Chu, B. W. K.; Zhu, N. Y.; Yam, V. W. W. Inorg. Chem. 2007, 46, 720.
  • 4Amoroso, A. J.; Arthur, R. J.; Coogan, M. E; Court, J. B.; Moreira, V. F.; Hayes, A. J.; Lloyd, D.; Millet, C.; Pope, S. J. A. New,~ Chem. 2008, 7, 1097.
  • 5Carraway, E. R.; Demas, J. N.; DeGraff, B. A.; Baeon, J. R. Anal. Chem. 1991, 63, 337.
  • 6Ge, F.; Cao, R. G.; Zhu, B.; Li, J. J.; Xu, D. S.Acta Phys. -Chim. Sin. 2010, 26, 1779.
  • 7Lin, Z. H.; Zhao, Y. G.; Duan, C. Y.; Zhang, B. G.; Bai, Z. P. Dalton Trans. 2006, 30, 3678.
  • 8Lo, H. S.; Yip, S. K.; Wong, K. M. C.; Zhu, N. Y.; Yam, V. W. W. Organometallics 2006, 25, 3537.
  • 9McFarland, S. A.; Finney, N.S. Chem. Commun. 2003, No. 3, 388.
  • 10Yu, X. H.; Ge, G. P.; Zhang, G. L.; Guo, H. Q.Acta Phys. -Chim. Sin. 2010, 26, 1184.

共引文献29

同被引文献23

  • 1张国林,刘泽华,郭海清,啜玉涛,甄常刮,邹德春.新型黄色磷光吡嗪铱(Ⅲ)配合物的合成及发光性质[J].高等学校化学学报,2004,25(3):397-400. 被引量:7
  • 2BALDO M A, O’BRIEN D F, YOU Y, et al.. Highly efficient phosphorescent emission from organic electroluminescent devices [J]. Nature, 1998, 395(6698):151-154.
  • 3GONG X, OSTROWSKI J C, BAZAN G C, et al.. Electrophosphorescence from a conjugated copolymer doped with an iridium complex: high brightness and improved operational stability [J]. Adv. Mater., 2003, 15(1):45-49.
  • 4CHEN X W, LIAO J L, LIANG Y M, 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.
  • 5LAMANSKY S, DJUROVICH P, MURPHY D, et al.. Highly phosphorescent bis-cyclometalated iridium complexes: synthesis, photophysical characterization, and use in organic light emitting diodes [J]. J. Am. Chem. Soc., 2001, 12(18):4304-4312.
  • 6SU Y J, HUNG H L, LI C L, et al.. Highly efficient red electrophosphorescent devices based on iridium isoquinoline complexes: remarkable external quantum efficiency over a wide range of current [J]. Adv. Mater., 2003, 15(11):884-888.
  • 7HOLMES R J, FORREST S R, TUNG Y J, et al.. Blue organic electrophosphorescence using exothermic host-guest energy transfer [J]. Appl. Phys. Lett., 2003, 82(15):2422-2424.
  • 8TSUBOYAMA A, MIZUTANI H, OKADA S, et al.. Luminescence device, display apparatus and metal coordination compound: European, EP1191612 [P]. 2003-06-04.
  • 9GE G P, HE J, GUO H Q, et al.. Highly efficient phosphorescent iridium (Ⅲ) diazine complexes for OLEDs: different photophysical property between iridium (Ⅲ) pyrazine complex and iridium (Ⅲ) pyrimidine complex [J]. J. Organomet. Chem., 2009, 694(19):3050-3057.
  • 10ZHANG G L, GUO H Q, CHUAI Y T, et al.. Synthesis and luminescence of a new phosphorescent iridium (Ⅲ) pyrazine complex [J]. Mater. Lett., 2005, 59(24-25):3002-3006.

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