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Construct and Properties of Photoluminescent-electrical-magnetic Trifunctional Bistrand Aligned Nanobundles

Author: YinDuanDuan
Tutor: DongXiangTing
School: Changchun University of Science and Technology
Course: Applied Chemistry
Keywords: Electrospinning Rare earth trifluoride Rare earth oxides Polyaniline Fe3O4 aligned nanoboundless aligned nanobelts
CLC: TQ340.64
Type: Master's thesis
Year: 2014
Downloads: 2
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Abstract


Polyaniline has become an important research field of the conductive polymer due to its low priced, accessible raw materials, high conductivity, good stability.Polyaniline has applications in areas such as electromagnetic interference shielding, microelectronics and biomedicine. Rare earth trifluoride and oxides are extensively used as luminescent matrixes owing to their high absorption of light and energy transfer efficiency. Nanometer ferro ferric oxide has unique magnetic characteristic,and attracts a lot of interest of scientists recently owing to its wide applications, such as biomacromolecules separation, catalyst separation, targeted drug delivery and magnetic resonance imaging. Electrospinning has been proved to be one of the best methods to fabricate one-dimensional nanomaterials owing to its simple operation,high efficiency and reproducibility.Currently.investigation on the photo luminescent-electrical-magnetic composite nanomaterials has become a hot subject in the field of nanomaterials due to their applications in medical diagnostics and biotechnology. However, few studies on fabricating trifunctional photoluminescent-electrical-magnetic nanocomposite by electrospinning are found in the references.In this dissertation,in order to reduce the absorption of light when PANI and Fe3O4were scattered in the nanofibers and nanobelts,we use a parallel axial electrospinning setup with side by side dual spinnerets to achieve effective separation of luminescent materials from electrical and magnetic materials.[PANI/Fe3O4/PVP]//[YF3:5%Eu3+nanofibers/PVP] photoluminescent-electrical-magnetic trifunctional aligned nanoboundless,[Fe3O4/PVP]//[YF3:5%Eu3+/PVP] magnetic-photoluminescent bifunctional aligned nanoboundless and [PANI/Fe3O4/PMMA]//[Y2O3:5%Eu3+/PMMA] photoluminescent-electrical-magnetic trifunctional aligned nanobelts were prepared by electrospinning technology.The samples were systematically characterized by modern measurement techniques, including XRD, SEM, TEM, VSM, BM, HMS and PL. The results show that the photoluminescent-electrical-magnetic trifunctional aligned nanoboundless and aligned nanobelts have excellent electrical conductivity, luminescent properties and magnetic properties.The luminescent performances, electrical conductivity and magnetic properties of the bistrand aligned nanobundles and brstrand aligned nanobelts can be tunable by adding various amounts of rare earth luminescent materials and rare earth oxides, polyaniline and Fe3O4nanoparticles. These findings lay solid foundations for the future study of photoluminescent-electrical-magnetic composite nanomaterials.

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CLC: > Industrial Technology > Chemical Industry > The chemical fiber industry > General issues > Production process > Spinning
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