以双(2-二苯基磷苯基)醚为配体的蓝色磷光铜(Ⅰ)配合物的合成及光电特性研究

Synthesis and Photoelectrical Properties of Blue Phosphorescent Copper(Ⅰ) Complex with Bis-[2-(diphenylphosphino)phenyl]ether Ligand

合成了一种新型的室温天蓝色磷光发射材料双(2-二苯基磷苯基)醚碘合铜(Ⅰ)([(POP)CuI]2)配合物。通过红外光谱、X-射线单晶衍射确定其分子结构,并对其光电特性进行了详细研究。结果表明:[(POP)CuI]2为二聚体结构,主要吸收峰为227,268,291 nm,最大发射峰为475 nm,光学带隙为2.93 eV。以[(POP)CuI]2作为客体掺杂在主体CBP中作为发光层,制备了结构为ITO/NPB(30 nm)/CBP∶[(POP)CuI]2(30 nm,8%)/BAlq(10 nm)/Alq3(30 nm)/LiF(1 nm)/Al(200 nm)的器件,其电致发光峰为476 nm,最大亮度为9 539 cd/m2,最大电流效率为1.9 cd/A。

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.