Reducing bleaching effects in organic nanofibers by coating

Research output: Contribution to conference without publisher/journalPosterResearch

Abstract

Para-hexaphenylene (p-6P) organic nanofibers emit polarized, blue light upon UV excitation with a peak wavelength of the emitted light of 425 nm [1] and a spatially anisotropic distribution of the emitted light [2]. These features could enable future (opto-)electronic applications [3], since, for example, these molecules in the form of a thin film can function as an OLED [4]. However, the nanofibers exhibit a characteristic photoinduced reaction during illumination with UV light that causes a decrease in luminescence intensity (bleaching) and that is partly attributed to photooxidation [1]. Here, we present results of systematic bleaching experiments, in which we have investigated diverse mono- and multilayer coating materials. It is found that the most promising combination results in a significant reduction of bleaching without affecting significantly the emission spectrum.
Original languageEnglish
Publication dateSep 2009
Publication statusPublished - Sep 2009
EventChemistry and Physics of Materials for Energetics. A European School in Materials Science. Physics and Chemistry of Advanced Materials (PCAM) - Milano, Italy
Duration: 14. Sep 200919. Sep 2009

Conference

ConferenceChemistry and Physics of Materials for Energetics. A European School in Materials Science. Physics and Chemistry of Advanced Materials (PCAM)
CountryItaly
CityMilano
Period14/09/200919/09/2009

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Bibliographical note

1] C. Maibohm, J. R. Brewer, H. Sturm, F. Balzer, H.-G. Rubahn, J. Appl. Phys. 100, 054304 (2006)
[2] J. Brewer, C. Maibohm, L. Jozefowski, L. Bagatolli, H.-G. Rubahn, Nanotechnology 16, 2396 (2005)
[3] F. Balzer and H.-G. Rubahn, Adv. Funct. Mater. 15, 17 (2005)
[4] H. Yanagi and S. Okamoto, Appl. Phys. Lett. 71, 2563 (1997)

Keywords

  • Organic nanofibers
  • Bleaching
  • Coating
  • p6P

Cite this

Tavares, L., Kjelstrup-Hansen, J., Rubahn, H-G., & Sturm, H. (2009). Reducing bleaching effects in organic nanofibers by coating. Poster session presented at Chemistry and Physics of Materials for Energetics. A European School in Materials Science. Physics and Chemistry of Advanced Materials (PCAM) , Milano, Italy.