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《Chinese Journal of Luminescence》 2012-12
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Synthesis and Photoelectrical Properties of Blue Phosphorescent Copper(Ⅰ) Complex with Bis-[2-(diphenylphosphino)phenyl]ether Ligand

QU Li-tao1,XU Hui-xia2,3,HAO Yu-ying1,2, LI Yun-fei1,REN Jing-kun1,WANG Hua2,3,XU Bing-she2,3(1.College of Physics and Optoelectronics,Taiyuan University of Technology,Taiyuan 030024,China; 2.Key Laboratory of Interface Science and Engineering in Advanced Materials,Taiyuan University of Technology, Taiyuan 030024,China; 3.Research Center of Advanced Materials Science and Technology,Taiyuan University of Technology,Taiyuan 030024,China)  
A new copper(Ⅰ) complex of [(POP)CuⅠ]2 ∶bis-[2-(diphenyl phosphino)phenyl]ether] with blue emission was designed and synthesized.The molecular structure and photophysical properties of [(POP)CuⅠ]2 were investigated by FT-IR spectra,X-ray single crystal diffraction,UV-Vis absorption,emission spectra and cyclic voltammetry.The results indicate that the UV-Vis absorption peaks of [(POP)CuⅠ]2 are located at 227,268 and 291 nm.The blue light can be observed with a peak at 475 nm in the solid state.The HOMO,LUMO energy levels and optical gap are-6.40,-3.47 and 2.93 eV,respectively.The devices of ITO/NPB(30 nm)/CBP∶[(POP)CuⅠ]2(30 nm,8%)/BAlq(10 nm)/Alq3(30 nm)/LiF(1 nm) /Al(200 nm) were fabricated by doping [(POP)CuⅠ]2 into CBP as emitting layer with emission peak at 476 nm and maximum luminance,current efficiency of 9 539 cd/m2,1.9 cd/A.
【Fund】: 国家自然科学基金(21071108 60976018 21101111 61274056 61205179);; 教育部长江学者与创新团队发展项目(07020401);; 山西省自然科学基金(2010021023-2 2011021022-2)资助项目
【CateGory Index】: O627.12
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