中文摘要：

采用Wittig-Horner反应,将少量端基为磷脂的黄光发射客体低聚对亚苯基亚乙烯基链段（MOPV）接枝到含有醛基单体的蓝光发射主体材料聚芴的侧链上,合成了一种新型的接枝聚芴衍生物PF-g-MOPV.这种接枝聚合物具有很好的热稳定性,可溶于常用的有机溶剂.以接枝共聚物PF-g-MOPV为发光层的单层器件发射出黄绿光,色坐标为（0.30,0.57）,最大发光亮度达到1550cm/m^2,这说明蓝光聚芴主链向侧链MOPV进行了有效地能量转移.

英文摘要：

A polyfluorene derivative containing a monomer with bis-aldehyde functional group was synthesized according to Suzuki coupling reaction. Then,a small amount of oligo （ phenylenevinylene with two triphenylamine side group） （ MOPV） with bis-phosphonate functional groups was grafted to the polyfluorene derivative with bis-aldehyde functional groups by using Wittig-Horner method. The structures,thermal,optical and electrochemical properties of MOPV,pre-grafted polymer P1 and the grafted polymer PF-g-MOPV were characterized by 1H-NMR,GPC,DSC,TGA,UV-Vis,photoluminescence （ PL ） spectroscopy and cyclic voltammetry （CV）,respectively. The grafted polymer exhibited better thermal properties than the pre-grafted polymer P1. The grafted polymer exihibited two PL emission bands ascribed to polyfluorene and MOPV segments,which indicated that Frster energy transfer from polyfluorene host to MOPV guest was efficient. This is the main mechanism in the PL process. To investigate the electroluminescent （ EL） characteristics of the grafted polymer,a single-layer PLEDs device with a configuration of indium tin oxide （ ITO ） /poly-（ethylenedioxythiophene）：poly（styrenesulfonic acid） （ PEDOT∶ PSS） /polymer/Ca/Al was fabricated. The grafted polymer emitted yellowish-green light with the international commission on illumination （ CIE ） coordinates of （0. 30,0. 57 ） and the maximum brightness of 1550 cd /m^2. The MOPV segments serve as effective sites for charge trapping,which can trap both electron and hole from the polyfluorene backbone. Charge trapping rather than Frster energy transfer is the main mechanism in the EL process.