两种芳胺基团修饰的螺二芴衍生物在有机电致发光材料及荧光探针中的应用

通过在螺二芴上引入芳胺基团制备出两种全新的螺二芴衍生物SPF-1和SPF-2.化合物SPF-1能够通过荧光强度检测有机溶剂中的含水量.其中，SPF-1在1，4-二氧六环中对水的检测限达到0.018％，在四氢呋喃（THF）中对水的检测限达到0.049％，结果优于大多数文献的报道.另外，SPF-1和SPF-2都可用作有机电致发光（EL）器件的发射层材料.SPF-1制备的器件在506 nm附近有强的发射峰，色度坐标为（0.24，0.48）；SPF-2制备的器件在471 nm和502 nm处有较强发射，色度坐标为（0.31，0.54）.两个器件都具有低开启电压、高热稳定性等优异性能.其中SPF-1的最大亮度、最大电流效率和最大功率效率分别为1 653 cd·m^-2，2.55 cd·A^-1和1.23 lm·W^-1，SPF-2的最大亮度、最大电流效率和最大功率效率为是1 660 cd·m^-2，2.1 cd·A^-1和1.28 lm·W^-1.

Application of two spirobifluorene derivatives containing arylamine groups in organic light emitting diodes and fluorescent probe for water

Two novel spirobifluorene derivatives (SPF-1 and SPF-2) incorporating arylamine groups were prepared. The fluorescent intensity of SPF-1 can be made to measure the water content of organic solvents. The detection limits are respectively estimated at 0.049% in tetrahydrofuran (THF) and 0.018% in 1,4-dioxane, which are superior to most reported results in the literature. The electroluminescence (EL) devices, where SPF-1 and SPF-2 serve as emitting materials, exhibit a peak around 506 nm with CIE coordinates of (0.24, 0.48) for SPF-1 and dual band emissions at 471 and 502 nm with CIE coordinates of (0.31, 0.54) for SPF-2, respectively. These devices showed excellent performance with low turn-on voltages and high thermal stability. The maximum brightness,maximum current efficiencies and power efficiencies are 1 660 cd·m^-2,2.1 cd·A^-1and 1.28 lm·W^-1 for SPF-1,and 1 653 cd·m^-2,2.55 cd·A^-1 and 1.23 lm·W^-1 for SPF-2, respectively.