Photoluminescence anisotropy of uni-axially aligned electrospun conjugated polymer nanofibers of MEH-PPV and P3HT
Photoluminescence anisotropy of uni-axially aligned electrospun conjugated polymer nanofibers of MEH-PPV and P3HT
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DOI：
10.1039/c0jm02713h
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发表时间：
2011
影响因子：
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通讯作者：
K. Yin;Lifeng Zhang;Chuilin Lai;L. Zhong;Steve Smith;H. Fong;Zhengtao Zhu
中科院分区：
文献类型：
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作者：
K. Yin;Lifeng Zhang;Chuilin Lai;L. Zhong;Steve Smith;H. Fong;Zhengtao Zhu
采用静电纺丝技术制备了含聚[2-甲氧基-5-（2′-乙基己氧基）-1，4-亚苯基亚乙烯基]（MEH-PPV）和聚（3-己基噻吩）（P3 HT）的单轴取向纳米纤维。利用发光偏振光谱研究了取向共轭聚合物纳米纤维的发光各向异性。结果表明，定向纳米纤维的光致发光具有高度各向异性，沿着纳米纤维轴向发射较强;相比之下，随机纳米纤维和薄膜的光致发光表现出较弱的发射各向异性。这些结果表明，静电纺丝共轭聚合物纳米纤维具有大分子链优选沿沿着取向。该研究为基于共轭聚合物静电纺纳米纤维的独特光电器件的开发提供了新的指导。
We report the preparation of the uni-axially aligned nanofibers containing poly[2-methoxy-5-(2′-ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV) or poly(3-hexylthiophene) (P3HT) using the electrospinning technique. The emission anisotropy of the aligned conjugated polymer nanofibers was investigated using the luminescence polarization spectroscopy. The results revealed that the photoluminescence of the aligned nanofibers was highly anisotropic with stronger emission along the nanofiber axis; in contrast, the photoluminescence of random nanofibers and thin films showed weak emission anisotropy. These results suggested that the electrospun conjugated polymer nanofibers had macromolecular chains preferably oriented along the nanofiber axis. The study provides new guidance in the development of unique optoelectronic devices based on electrospun nanofibers of conjugated polymers.