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Synthesis and Light-Emitting Properties of New Polyimides Containing Ethynylene Units in the Main Chain
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Chi, Jun Ho | - |
dc.contributor.author | Park, Se Hee | - |
dc.contributor.author | Lee, Chang-Lyoul | - |
dc.contributor.author | Kim, Jang-Joo | - |
dc.contributor.author | Jung, Jin Chul | - |
dc.date.accessioned | 2009-08-12T05:33:31Z | - |
dc.date.available | 2009-08-12T05:33:31Z | - |
dc.date.issued | 2007-06-28 | - |
dc.identifier.citation | Macromol. Mater. Eng. 2007, 292, 844 | en |
dc.identifier.issn | 1438-7492 (online) | - |
dc.identifier.issn | 1439-2054 (online) | - |
dc.identifier.uri | https://hdl.handle.net/10371/7009 | - |
dc.description.abstract | Two new polyimides (ODA-PI and HDA-PI) having 1,4-phenylenediethynylene unit and octyloxy groups were synthesized. Judging from inherent viscosities of their precursor PAAs (1.42 and 1.62 dL · g-1), the two PIs were very high in molecular weight. Casting and thermal imidization of PAAs results polyimides with good-quality films. They were stable up to 364 °C and showed no crystallites. UV-vis and PL spectra in NMP solutions of both PIs showed maxima at 442 and 501 nm, respectively, while PL spectra in 10 µm thick films exhibited a maximum at 540 nm. CV indicates that two PIs were electrochemically active in redox region. The devices with construction of ITO/PEDOT/PIs/BAlq3/LiF/Al exhibited turn-on voltages of 6.5 V in ODA-PI and 7.5 V in HDA-PI and emitted a bright bluish-green light. ODA-PI and HDA-PI showed maximum luminescence of 256 and 316 cd · cm-2, respectively, at the same voltage of 12 V. | en |
dc.description.sponsorship | This work has been supported by the Korea
Research Foundation Grant. (KRF-2006-005-J01301) Dr. Chang- Lyoul Lee thanks the Cambridge-KAIST Collaboration Program for financial supports. | en |
dc.language.iso | en | - |
dc.publisher | Wiley-Blackwell | en |
dc.subject | electroluminescent polyimide | en |
dc.subject | ethynylene-containing polyimide | en |
dc.subject | light-emitting polyimide | en |
dc.subject | photoluminescent polyimide | en |
dc.subject | polyimide | en |
dc.title | Synthesis and Light-Emitting Properties of New Polyimides Containing Ethynylene Units in the Main Chain | en |
dc.type | Article | en |
dc.contributor.AlternativeAuthor | 치준호 | - |
dc.contributor.AlternativeAuthor | 박세희 | - |
dc.contributor.AlternativeAuthor | 이창렬 | - |
dc.contributor.AlternativeAuthor | 김장주 | - |
dc.contributor.AlternativeAuthor | 정진철 | - |
dc.identifier.doi | 10.1002/mame.200700067 | - |
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