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首页> 外文期刊>Journal of Polymer Research >Fluorescent poly(p-phenylene vinylene)/poly(ethylene oxide) nanofibers obtained by electrospinning
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Fluorescent poly(p-phenylene vinylene)/poly(ethylene oxide) nanofibers obtained by electrospinning

机译：通过电纺丝获得的荧光聚对亚苯基亚乙烯基/聚环氧乙烷纳米纤维

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摘要

Poly(p-phenylene vinylene) (PPV)/poly(ethylene oxide) (PEO) hybrid nanofibers were prepared by electrospinning a composite solution of PPV precursor/PEO in a mixture of ethanol and water, followed by thermal conversion. The precursor/PEO composite solutions were successfully electrospun into nanofibers with diverse helical, helical and linear, and helical bead-on-string morphologies by controlling the amount of aqueous PEO solution in a composite solution. Moreover, adding aqueous PEO solution to a precursor ethanol solution decreased the diameters of the fibers. The experimental data suggest that the viscosity, conductivity, and surface tension of the electrospinning solution are the main factors that influence the morphology of the fibers. Fourier transform infrared (FT-IR) and X-ray diffraction (XRD) investigations indicated that the PPV precursor reacts with PEO during thermal conversion. Ultraviolet-visible (UV-vis) and photoluminescence (PL) spectra of the PPV-PEO nanofibers exhibited appreciable blue shifts with the addition of PEO, which made it possible to fabricate nanofibers with fluorescence ranging from yellow-green to blue. These highly fluorescent PPV/PEO nanofibers with various morphologies are potentially interesting for many applications, such as micro- and nanooptoelectronic devices and systems.
机译：通过将PPV前体/ PEO的复合溶液在乙醇和水的混合物中进行电纺丝，然后进行热转化，可以制备聚对苯撑亚乙烯基（PPV）/聚环氧乙烷（PEO）杂化纳米纤维。通过控制复合溶液中PEO水溶液的量，可以将前体/ PEO复合溶液成功电纺成具有各种螺旋形，螺旋形和线性形，以及螺旋串珠状形态的纳米纤维。此外，将PEO水溶液添加到前体乙醇溶液中减小了纤维的直径。实验数据表明，电纺丝溶液的粘度，电导率和表面张力是影响纤维形态的主要因素。傅里叶变换红外（FT-IR）和X射线衍射（XRD）研究表明，PPV前体在热转化过程中与PEO反应。 PPV-PEO纳米纤维的紫外可见（UV-vis）和光致发光（PL）光谱在加入PEO的情况下表现出明显的蓝移，这使得制造具有从黄绿色到蓝色的荧光的纳米纤维成为可能。这些具有各种形态的高荧光PPV / PEO纳米纤维对于许多应用（例如微和纳米光电子器件和系统）可能是令人感兴趣的。

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