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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/10873

Title: True photoluminescence spectra revealed in electrospun light-emitting single nanofibers
Authors: Ishii, Yuya
Murata, Hideyuki
Keywords: electrospun nanofiber
light scattering
single nanofiber
Issue Date: 2012-01-26
Publisher: Royal Society of Chemistry
Magazine name: Journal of Materials Chemistry
Volume: 22
Number: 11
Start page: 4695
End page: 4703
DOI: 10.1039/C2JM14831E
Abstract: We demonstrate for the first time that re-absorption and scatterings of photoluminescence (PL) significantly occurs among electrospun light-emitting nanofibers. Electrospun nanofibers composed of a blend of poly[2-methoxy-5-(2′-ethyl-hexyloxy)-1,4-phenylenevinylene] and poly(ethylene oxide) with and without LiCF_3SO_3 were prepared in controlled numbers. Different numbers of fibers showed different PL spectra even though the PL spectra from individual fibers were almost the same. Results of simulated PL spectra using UV-vis absorption spectra measured with and without an integrating sphere revealed that the change of PL spectral is due to re-absorption and scatterings of PL among the fibers. Although most PL spectra of electrospun nanofibers have been performed with a sheet or mat of many electrospun fibers, our study clearly shows that measuring PL spectrum of a single fiber is indispensable for precisely evaluating the aggregation states and the electronic states of conjugated polymers inside the fibers.
Rights: Copyright (C) 2012 Royal Society of Chemistry. Yuya Ishii and Hideyuki Murata, Journal of Materials Chemistry, 22(11), 2012, 4695-4703. http://dx.doi.org/10.1039/C2JM14831E - Reproduced by permission of The Royal Society of Chemistry
URI: http://hdl.handle.net/10119/10873
Material Type: author
Appears in Collections:c10-1. 雑誌掲載論文 (Journal Articles)

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