| Presentation | 2008-09-30 Photoexcitation dynamics in fluorene-fluorenone copolymers thin films Emi Nakamoto, Takashi Kobayashi, Takashi Nagase, Hiroyoshi Naito, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Photoexcitation dynamics has been investigated in poly [(9,9-dioctylfluorene)-co-(9,9-di(methyl)butylfluorene)] (F8F5) and its fluorenone copolymers; fluorenone is known as a degradation product of fluorene homopolymers. Green emission band, which originates from fluorenone units and degrades color purity of fluorescence of F8F5, is suppressed when the polymers adopt a planar conformation. From excitation wavelength dependence of fluorescence spectra of the polymers, we consider that the suppression results from increase of the potential barrier between F8F5 and fluorenone units in the planar conformation. We have also found that photoluminescence quantum efficiency reaches 90% in F8F5 and 60% in its fluorenone copolymers. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | fluorene / fluorenone / photoluminescence / G-band / degradation |
| Paper # | OME2008-45 |
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| Conference Information | |
| Committee | OME |
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| Conference Date | 2008/9/23(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Organic Material Electronics (OME) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Photoexcitation dynamics in fluorene-fluorenone copolymers thin films |
| Sub Title (in English) | |
| Keyword(1) | fluorene |
| Keyword(2) | fluorenone |
| Keyword(3) | photoluminescence |
| Keyword(4) | G-band |
| Keyword(5) | degradation |
| 1st Author's Name | Emi Nakamoto |
| 1st Author's Affiliation | Graduate School of Engineering, Osaka Prefecture University() |
| 2nd Author's Name | Takashi Kobayashi |
| 2nd Author's Affiliation | Graduate School of Engineering, Osaka Prefecture University:The Research Institute for Molecular Electronic Devices, Osaka Prefecture University |
| 3rd Author's Name | Takashi Nagase |
| 3rd Author's Affiliation | Graduate School of Engineering, Osaka Prefecture University:The Research Institute for Molecular Electronic Devices, Osaka Prefecture University |
| 4th Author's Name | Hiroyoshi Naito |
| 4th Author's Affiliation | Graduate School of Engineering, Osaka Prefecture University:The Research Institute for Molecular Electronic Devices, Osaka Prefecture University |
| Date | 2008-09-30 |
| Paper # | OME2008-45 |
| Volume (vol) | vol.108 |
| Number (no) | 225 |
| Page | pp.pp.- |
| #Pages | 5 |
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