1 The Mads Clausen Institute, Faculty of Engineering, SDU2 Faculty of Engineering, SDU3 SDU NanoSYD, The Mads Clausen Institute, Faculty of Engineering, SDU4 unknown5 The Mads Clausen Institute, Faculty of Engineering, SDU
Para-hexaphenylene (p-6P) organic nanofibers emit polarized, blue light upon UV excitation with a peak wavelength of the emitted light of 425 nm  and a spatially anisotropic distribution of the emitted light . These features could enable future (opto-)electronic applications , since, for example, these molecules in the form of a thin film can function as an OLED . 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 . 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.
Organic nanofibers; Bleaching; Coating; p6P
Main Research Area:
Chemistry and Physics of Materials for Energetics. A European School in Materials Science. Physics and Chemistry of Advanced Materials (PCAM), 2009