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• W2013864503 abstract "Novel acetylene monomers substituted with phenylethynylcarbazolyl groups, 3-[(4-octylphenyl)ethynyl]-9-propargylcarbazole (1), 3,6-bis[(4-octylphenyl)ethynyl]-9-propargylcarbazole (2), 9-(4-ethynylphenyl)-3-[(4-octylphenyl)ethynyl]carbazole (3), and 9-(4-ethynylphenyl)-3,6-bis[(4-octylphenyl)ethynyl]carbazole (4) were synthesized, and polymerized with Rh+(nbd)[η6–C6H5B−(C6H5)3] and WCl6–n-Bu4Sn catalysts. The corresponding polyacetylenes with number-average molecular weights ranging from 9200 to 94 000 were obtained in 20–98% yields. The IR spectra of the polymers revealed that acetylene polymerization took place at the terminal ethynyl group, while the ethynylene group remained intact. The UV–vis absorption band edge wavelengths of W-based poly(3) and poly(4) were longer than those of the other polymers. W-Based poly(4) emitted fluorescence with the highest quantum yield (41%). Poly(1) exhibited excimer-based fluorescence in dilute solution." @default.
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• W2013864503 date "2008-10-01" @default.
• W2013864503 modified "2023-09-29" @default.
• W2013864503 title "Synthesis and properties of polyacetylenes having pendent phenylethynylcarbazolyl groups" @default.
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• W2013864503 doi "https://doi.org/10.1016/j.polymer.2008.08.028" @default.
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