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- Title
Synthesis and optical properties of organic semiconductor: zirconia nanocomposites.
- Authors
Sagmeister, M.; Brossmann, U.; List, E. J. W.; Ochs, R.; Szabó, D. V.; Saf, R.; Grogger, W.; Tchernychova, E.; Würschum, R.
- Abstract
Oxide nanoparticles were used as carrier for organic semiconductor materials. Stable suspensions of ZrO nanoparticles coated with anthracene, pentacene, or para-hexaphenyl were obtained by microwave plasma synthesis of ZrO cores, subsequent in situ coating with organic compounds, and in situ dispersion in ethylene glycol. Powders of coated oxide nanoparticles were synthesized for comparison. The successful coating and a small uniform size distribution of the ZrO cores were confirmed by comprehensive characterization including photoluminescence, absorption spectroscopy, electron microscopy, electron energy loss spectroscopy, mass spectrometry, and X-ray diffraction. Powder compacts of anthracene-coated ZrO particles showed good air stability and a significant blue shift accompanied by an attenuation of the emission lines at higher vibronic orders in comparison to samples of pure anthracene as received. For para-hexaphenyl-coated nanoparticles, the same photoluminescence characteristics are observed as for pure para-hexaphenyl. In the case of pentacene-coated nanoparticles indication for degradation is found.
- Subjects
NANOPARTICLES; ANTHRACENE; MICROWAVE plasmas; ETHYLENE glycol; PHOTOLUMINESCENCE; ELECTRON microscopy
- Publication
Journal of Nanoparticle Research, 2010, Vol 12, Issue 7, p2541
- ISSN
1388-0764
- Publication type
Article
- DOI
10.1007/s11051-009-9823-7