Study on Relationship between Electroluminescence Properties and Molecular Weight Distribution of Poly(9,9'-dioctylfluorene) Using Photoluminescence
Study on Relationship between Electroluminescence Properties and Molecular Weight Distribution of Poly(9,9'-dioctylfluorene) Using Photoluminescence
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光致发光研究聚(9,9-二辛基芴)电致发光性能与分子量分布的关系
DOI：
10.1143/jjap.44.546
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
N. Kitamura
中科院分区：
文献类型：
--
作者：
D. Fujishima;T. Mori;T. Mizutani;Takakazu Yamamoto;N. Kitamura
聚芴（PF）作为共轭聚合物材料已经引起了人们的注意，其可以作为基于聚合物的发射显示器而有前途。PF具有蓝光发射、高光致发光（PL）量子产率以及热稳定性和化学稳定性。PF结构的高效蓝光发射对于由聚合物发光二极管（LED）组成的显示器是有吸引力的。合成了10种不同分子量分布的聚（9，9 ′-二辛基芴）（PDOF），研究了它们的光致发光和电致发光性能。此外，我们还研究了它们的荧光寿命。结果发现，PF基LED的最佳分子量约为105。从该结果可以认为，对于PF系LED而言，控制PDOF的分子量是重要的。
Polyfluorenes (PFs) have attracted attention as conjugated polymer materials that can be promising as polymer-based emissive displays. PFs have a blue emission, a high photoluminescence (PL) quantum yield and thermal and chemical stabilities. The highly efficient blue emission from the PF structure is attractive for a display consisting of polymer light-emitting diodes (LEDs). We synthesized 10 kinds of poly(9,9'-dioctylfluorene) (PDOF) of different molecular weight distributions and studied their PL and electroluminescence properties. Moreover, we also studied their fluorescent lifetime. As a result, we found that optimum molecular weight of PF-based LEDs is about 105. From this result, it is thought that it is important to control the molecular weight of PDOF for PF-based LEDs.