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- 저자 : Minglu Zhou (검색결과 1 건)
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Wen Wang,Qidan Ling,Luying Liang,Minglu Zhou,Minmin Sun,Shuhui Yan 한국고분자학회 2015 Macromolecular Research Vol.23 No.1
A new monomer 1,3-dibromo-5-perfluorophenyl-thieno[3,4-c]pyrrole-4,6-dione was synthesized and thecorresponded D-A copolymer poly{9,9-dioctylfluorene-2,7-diyl-alt-5-perfluorophenylthieno[3,4-c]pyrrole-4,6-dione}(PFFTPD) based on fluorene unit was synthesized. In order to investigate the effect of pentafluorobenzene substitutionon the photo-physics and stability properties, the compared D-A copolymer poly{9,9-dioctylfluorene-2,7-diylalt-5-octylthieno[3,4-c]pyrrole-4,6-dione} (PFCTPD) based on fluorene and octyl-thieno[3,4-c]pyrrole-4,6-dionewas synthesized also. The obtained copolymer PFFTPD had a weight average molecular weight of 12178 with anarrow polydispersity index of 1.51, good solubility and higher thermal stability with Tg of 131 oC and Td of 410 oC. Compared to that of PFCTPD, the PL spectra of PFFTPD in solution and in thin film showed narrower half peakwidth and weaker shoulder peak in the long wavelength region. The luminescent efficiency and color purity wereenhanced while lowest unoccupied molecular orbital (LUMO) and highest occupied molecular orbital (HOMO) levelswere decreased by incorporation of pentafluorobenzene group. Thus, the copolymer PFFTPD may be good candidateas emitting material applied in polymer light emitting diode (PLED).
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