Abstract
We prepared the rare earth ion (Eu3+, Tb3+)-doped polyimide nanoparticles by reprecipitation method. The nanoparticles showed unique luminescence properties. It was observed that luminescence intensity assigned to rare earth ion increased with increase in UV-irradiation time. In contrast, the intensity decreased with elevation of heat-treatment temperature and the luminescence vanished after treatment at 200°C. Broad bands ascribed to a host were observed and these intensities were also varied by UV-irradiation and heat-treatment. The excitation spectra indicated that energy transfer from PI to rare earth ion occurred. The above phenomena are explained that a reversible change in the intensity of luminescence ascribed to a host results in that assigned to rare earth ion through energy transfer.
Original language | English |
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Number of pages | 1 |
Publication status | Published - 2005 Dec 1 |
Event | 54th SPSJ Annual Meeting 2005 - Yokohama, Japan Duration: 2005 May 25 → 2005 May 27 |
Other
Other | 54th SPSJ Annual Meeting 2005 |
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Country | Japan |
City | Yokohama |
Period | 05/5/25 → 05/5/27 |
Keywords
- Luminescence
- Nanoparticle
- Polyimide
- Rare earth ion
- Recording material
ASJC Scopus subject areas
- Engineering(all)