Hostname: page-component-78c5997874-j824f Total loading time: 0 Render date: 2024-11-03T03:35:36.575Z Has data issue: false hasContentIssue false
  • English
  • Français

Fabrication and Optical Properties of Electrospun Organic Semiconductor Nanofibers from Blended Polymer Solution

Published online by Cambridge University Press:  01 February 2011

Surawut Chuangchote ,
Takashi Sagawa  and
Susumu Yoshikawa
Surawut Chuangchote
Affiliation:
[email protected], Kyoto University, Institute of Advanced Energy, Gokasho, Uji, 611-0011, Japan
Takashi Sagawa
Affiliation:
[email protected], Kyoto University, Institute of Advanced Energy, Gokasho, Uji, 611-0011, Japan, +81774384580, +81774383508
Susumu Yoshikawa
Affiliation:
[email protected], Kyoto University, Institute of Advanced Energy, Gokasho, Uji, 611-0011, Japan
Get access

Abstract

Ultrafine organic semiconductor fibers with the average diameters ranging in sub-micro-down to nanometers (43 nm - 1.7 µm) were fabricated by electrospinning of a mixture of poly(2-methoxy-5-(2′-ethylhexyloxy)-1,4-phenylene-vinylene) (MEH-PPV) and polyvinylpyrrolidone (PVP) in various mixed solvents. The average diameter of the as-spun fibers decreased into nanometer scale with decreasing the concentration of PVP. Addition of a volatile organic salt (pyridinium formate, PF) or utilization of three-mixed solvent system was also effective to reduce the size of the diameter of as-spun fibers. After the removal of PVP from as-spun fibers by Soxhlet extraction, pure MEH-PPV fibers were obtained as a ribbon-like structure aligned with wrinkled surface in fiber direction. As-spun fibers showed relatively higher crystallinity, higher conjugation length, and a remarkable blue shift of photoluminescence (PL) peak was observed, in comparison with the cast film. The increase in composition of MEH-PPV and the removal of PVP from as-spun MEH-PPV/PVP fibers resulted in a significant blue-shift in UV-Vis absorption peak and red-shift in PL peak.

Keywords

polymerfiberphotoemission
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1091: Symposium AA – Conjugated Organic Materials–Synthesis, Structure, Device and Applications , 2008 , 1091-AA07-85
Copyright
Copyright © Materials Research Society 2008

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Lam, J. W. Y. and Tang, B. Z. Acc. Chem. Res. 38, 745 (2005).Google Scholar
2. Chuangchote, S., Sirivat, A., and Supaphol, P., Nanotechnology 18, 145705 (2007).Google Scholar
3. Madhugiri, S., Dalton, A., Gutierrez, J., Ferraris, J. P. and Balkus, K. J. Jr., J. Am. Chem. Soc 125, 14531 (2003).Google Scholar
4. Babel, A., Li, D., Xia, Y., and Jenekhe, S. A. Macromolecules 38, 4705 (2005).Google Scholar
5. Chuangchote, S., Sagawa, T., and Yoshikawa, S., Jpn. J. Appl. Phys. 47, 787 (2008).Google Scholar
6. Chuangchote, S., Sagawa, T., and Yoshikawa, S., Macromol. Symp. (in press).Google Scholar
7. Supaphol, P. and Chuangchote, S., J. Appl. Polym. Sci. 108, 969 (2008).Google Scholar
8. Kakade, M. V. Givens, S., Gardner, K., Lee, K. H. Chase, D. B. and Rabolt, J. F. J. Am. Chem. Soc. 129, 2777 (2007).Google Scholar