کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5185986 | 1381092 | 2007 | 7 صفحه PDF | دانلود رایگان |
Oxazole-containing Ï-conjugated polymers, an alternating copolymer of 9,9-dioctylfluorene-2,7-diyl and 2,5-bis(p-phenylene)oxazole (P(Flu-DPOxz)) and an alternating copolymer of 2,5-dialkoxy-p-phenylene and 2,5-bis(p-phenylene(oxazole)) (P(ROPh-DPOxz)), have been synthesized by Pd-catalyzed organometallic polycondensation. They were soluble in organic solvents, and had number average molecular weights of 18â600 and 24â700, respectively, in GPC analysis. P(Flu-DPOxz) and P(ROPh-DPOxz) showed UV-vis absorption peaks at about 380Â nm in CHCl3. Powder XRD patterns and UV-vis data of the polymers indicated that the polymer solid was amorphous. The polymers were photoluminescent both in chloroform and in solid. In chloroform, the emission peak appeared at about 420Â nm with a high quantum yield of about 70%. The polymers were electrochemically active, and electrochemical data revealed that the oxazole unit behaved as a moderate electron-accepting unit.
Journal: Polymer - Volume 48, Issue 8, 5 April 2007, Pages 2331-2337