Fluorescence studies of electrospun MEH-PPV/PEO nanofibers

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• 作者：Zhengtao Zhu ; Lifeng Zhang ; Steve Smith ; Hao Fong ; Yugang Sun ; David Gosztola
• 关键词：MEH-PPV ; Fluorescence ; Electrospinning ; Nanofibers
• 刊名：Synthetic Metals
• 出版年：2009
• 出版时间：July 2009
• 年：2009
• 卷：159
• 期：14
• 页码：1454-1459
• 全文大小：1363 K

文摘

We report a study of the fluorescence properties of the conjugated polymer poly [2-methoxy-5-(2′-ethyl hexyloxy)-p-phenylene vinylene] (MEH-PPV) and polyethylene oxide (PEO) nanofibers. MEH-PPV/PEO nanofibers with different compositions have been fabricated by the electrospinning technique. The fluorescence spectra of the nanofibers show that the emission shoulder at 630 nm blue-shifts 45 nm, whereas the main emission peak around 590 nm blue-shifts 15 nm with decreasing concentration of MEH-PPV in the nanofiber. In addition, confocal microscopic studies of a single MEH-PPV/PEO electrospun nanofiber indicate that the fluorescence spectra of the nanofiber do not show any polarization dependence. The results are discussed in terms of the aggregation of MEH-PPV in an inert matrix.