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浙江大学 宁波理工学院生物与化学工程分院
收稿:2009-05-30,
修回:1900-1-2,
网络首发:2010-02-20,
纸质出版:2010-02-20
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钟国伦, 王永红, 林金奇. 卟啉掺杂的MEH-PPV薄膜和氯仿溶液的光学性质[J]. 发光学报, 2010,31(1):119-125.
ZHONG Guo-lun, WANG Yong-hong, LIN Jin-qi. Spectral Properties of Porphyrin Doped MEH-PPV as Films and in Chloroform Solutions[J]. Chinese Journal of Luminescence, 2010, 31(1): 119-125.
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Frster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1×10
8
mg·mL
-1
·s
-1
。
paper
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