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Electrospinning of Light-emitting Fibers from a Tertiary Blend Solution of an Inert Polymer and Two Conjugated Polymers
Paper Type  |
Contributed Paper |
Title |
Electrospinning of Light-emitting Fibers from a Tertiary Blend Solution of an Inert Polymer and Two Conjugated Polymers |
Author |
Sutheerat Changsarn [a,b], James D. Mendez [c], Christoph Weder*[c], Toemsak Srikhirin [d], and Pit |
Email |
* christoph.weder@case.edu, ** pitt.s@chula.ac.th |
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Abstract: Ultra-fine PS/BEH-PF/EHO-OPPE fibers with average diameters ranging from 0.67 to 0.92 μm were successfully prepared by electrospinning a 8.5% (w/v) tertiary blend of PS/BEH-PF/EHO-OPPE (PS/BEH-PF/EHO-OPPE = 7.5:0.5:0.5 w/w/w) in chloroform (CF) with the addition of 8% (v/v) pyridinium formate (PF). Electrospun fibers from binary blends of PS/BEH-PF and PS/EHO-OPPE (PS/BEH-PF or PS/EHO-OPPE = 7.5:1 w/w) were also prepared in the same condition for comparison. Scanning electron microscopy and Fourier-transform infrared spectroscopy were respectively used to explore morphology and chemical functionality of the electrospun fibers. The optical properties of the as-prepared blend solutions, corresponding electrospun fibers, and annealed fibers at different temperatures were studied by UV-visible and photoluminescence spectroscopy. Upon increasing the annealing temperature, the fibers from the binary blend of PS/BEH-PF showed a much more red shift than those from the tertiary blend of PS/BEH-PF/EHO-OPPE, while the fibers from the binary blend of PS/EHO-OPPE showed a much more blue shift when compared with the pristine fibers. Supposedly, the incorporation of BEH-PF and EHO-OPPE molecules helped to reduce the aggregation occurring from the π−π interaction stacking as the lesser red shift was observed in the fibers from the tertiary blend. Keywords: electrospinning, polymer blend, poly(p-phenylene ethynylene), polyfluorene, optical properties.
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Start & End Page |
193 - 209 |
Received Date |
2010-10-14 |
Revised Date |
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Accepted Date |
2011-01-29 |
Full Text |
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Keyword |
electrospinning, polymer blend, poly(p-phenylene ethynylene), polyfluorene, optical properties. |
Volume |
Vol.38 No.2 (APRIL 2011) |
DOI |
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Citation |
[a S.C., B] , [c] J.D.M., Weder*[c] C., [d] T.S. and Pit A., Electrospinning of Light-emitting Fibers from a Tertiary Blend Solution of an Inert Polymer and Two Conjugated Polymers, Chiang Mai Journal of Science, 2011; 38(2): 193-209. |
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