具有不同取代基的吡唑啉衍生物的光致发光和电致发光

在合成两种具有不同取代基的吡唑啉衍生物PD1和PD2的基础上,研究了不同取代基效应对其光致发光和电致发光性质的影响.结果表明甲氧基取代的化合物PD2较N,N-二甲氨基取代的化合物PD1具有更高的荧光量子产率.而在作为有机电致发光器件的掺杂染料,当其器件结构为ITO/TPD/TPBI:2% PD/TP-BI/Mg:Ag时,PD1掺杂染料却有着较PD2更高的电致发光效率.当器件的电流密度为420 mA/cm²时,掺杂染料为PD1的器件在487 nm处发射蓝光,其发光亮度为1224 cd/m².

THE EFFECT OF SUBSTITUENTS ON PHOTOLUMINESCENCE AND ELECTROLUMINESCENCE OF PYRAZOLINE DERIVATIVES

Two compounds of pyrazoline derivatives (PD1, PD2) with different substituents were synthesized. The effects of substituents on their photoluminescence and eletroluminescence were also studied. The results indicate that the fluorescence quantum yield of compound PD2 with methoxy group is higher than that of compound PD1 with the substituents of N,N-dimethlyamino group. But as dopants in organic electroluminescent devices, in which the structure ITO/TPD/TPBI:2%PD/TPBI/Mg:Ag was employed, the device with PD1 as dopant is more effective than that of PD2. In the device with PD1 as dopant, blue emission peak around 487 nm and a luminance of 1224 cd/m2 is achieved at a current density of about 420 mA/cm2. These results are discussed preliminarily.;