Rapid Communication in Photoscience

Korean Society of Photoscience (한국광과학회)
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Synthesis and characterization of novel polyimides with diamines containing thiophene moieties

  • Yoon, Mu-Ju (School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST)) ;
  • Yoon, Tae-Ho (School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST))
  • Received : 2012.04.17
  • Accepted : 2012.05.18
  • Published : 2012.06.01
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Abstract

Noble diamine monomers containing thiophene moiety were prepared, such as 2,5'''-diamino-2, 2':5', 2'':5'', 2'''-quaterthiophene (4TDA) and 2, 5'''''-diamino-3'', 4'''-dihexyl-2,2':5', 2'':5'', 2''':5''', 2'''':5'''', 2'''''-sexithiophene (6TDA). Then, these monomers were utilized to prepare polyimides with 3,6-diphenylpromellitic dianhydride (DPPMDA), 3,6-di(4'-trifluoro-methylphenyl) pyromellitic dianhydride (6FPMDA) or 3,6-di(3',5'-bis (trifluoromethyl)phenyl) pyromellitic dianhydride (12FPMDA) via a conventional two-step process. The polyimides were characterized by FT-IR, TGA and DSC, and then subjected CV, UV-vis and PL measurements. The polyimides containing thiophene moiety exhibited high glass transition temperatures ($280{\sim}310^{\circ}C$) and excellent thermal stability (> $420^{\circ}C$) in air as well as green emission (535~586 nm).

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References

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