研究了不同质量浓度卟啉(TTP)掺杂的MEH-PPV的紫外吸收和荧光发射光谱。这种掺杂体系在膜中和氯仿溶液中的吸收光谱具有同样的行为，同时，在这两种情况下发现了MEH-PPV链的聚集，以及TTP在420 nm的吸收随掺入量的增加而增加。但是，膜的发射光谱与氯仿溶液中的有所不同。因TTP的吸收带与MEH-PPV发射带的重叠，在膜和氯仿溶液中的高浓度掺杂体系中存在从MEH-PPV到TTP的Frster能量转移，但是在高TTP掺杂下的氯仿溶液中能量转移导致MEH-PPV发射峰的劈裂，而当溶液被稀释时，这种现象消失，表明此时能量给体和受体的距离扩大，这种能量转移的速率为1×108 mg·mL-1·s-1。

The spectral properties of different mass percentages of the porphyrin(5,10,15,20-tetra-p-tolyl-21H,23H-porphine, TTP) doped poly［2-methoxy-5-(2′-ethylhexyloxy)-1,4-phenylene vinylene］ (MEH-PPV) were studied by UV-Vis absorption and fluorescent emission spectra in this paper. The absorption spectra of the blended systems as both films and chloroform solutions show the same behaviors. Meanwhile, the aggregation of polymer chains for MEH-PPV was found under the both cases and the absorption of TTP at 420 nm increase with increasing TTP in the blends. However, the emission spectra from the films are different from those in chloroform solutions. Frster energy transfer from MEH-PPV to TTP occurs in the films and chloroform solutions. Moreover, the splits of emission peak of MEH-PPV induced by energy transfer in chloroform solutions with high TTP doping levels are observed. The phenomenon is disappeared when the solution is diluted, indicating an enlarged distance between the energy donor and acceptor at that time. Furthermore, the rate of energy transfer was obtained at 1×108 mg·mL-1·s-1.