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Polymers 2016, 8(10), 350;

Synthesis of Novel Cobalt-Containing Polysilazane Nanofibers with Fluorescence by Electrospinning

Institute for Advanced Ceramics, School of Materials Science and Engineering, Harbin Institute of Technology, Yikuang Street, Nangang District, Harbin 150001, China
Authors to whom correspondence should be addressed.
Academic Editor: Mohamed Khayet
Received: 15 August 2016 / Revised: 3 September 2016 / Accepted: 19 September 2016 / Published: 17 October 2016
(This article belongs to the Special Issue Conjugated Polymers 2016)
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Emission in the nanostructured materials is important in micro/nanoelectronic devices. We report here a strategy for the processing of micron and submicron fibers from a cobalt-containing hyperbranched polysilazane by electrospinning. The electrospun nanofibers have uniform average diameters of ~600 nm and lengths of ~10 μm. The photophysical properties of polycobaltsilazane (PCSN) are studied using UV-VIS and photoluminescence spectroscopies. PCSN fibers display a series of emission peaks between 490 and 615 nm. The Co(II) doping into polysilazane leads to the emission from 465 to 415 nm. The emission wavelength shift of Co(III)-containing polysilazane is specific under 340 and 470 nm excitation wavelengths, respectively, while it is not observed with metal-free polysilazane. Thermogravimetric analysis-Differentical thermal analysis (TGA-DTA) profiles also show good thermostability of the PCSN fibers at 800 °C under Ar atmosphere. The use of PCSN offers both enhanced ceramic yields against ~5 wt % starting material and the fluorescence intensity of polymeric fibers. View Full-Text
Keywords: polycobaltsilazane; electrospinning; nanofibers; luminescence polycobaltsilazane; electrospinning; nanofibers; luminescence

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Zhang, Q.; Jia, D.; Yang, Z.; Duan, X.; Chen, Q.; Zhou, Y. Synthesis of Novel Cobalt-Containing Polysilazane Nanofibers with Fluorescence by Electrospinning. Polymers 2016, 8, 350.

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