Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5210013 | Reactive and Functional Polymers | 2013 | 8 Pages |
Abstract
Ï-Conjugated polymers based on 1-aminopyrrole and 4-amino-1,2,4-triazole were prepared. Pd-catalyzed organometallic polycondensation gave poly(arylene-ethynylene) (PAE)-type Ï-conjugated polymers consisting of BOC-protected 4-amino-1,2,4-triazole (Taz(BOC)) units (BOC = t-butoxycarbonyl). The number average molecular weights (Mn) were determined to be 5200-19,200 using GPC. An alternating copolymer of Taz(BOC) and bithiophene (Th-Th) units, P(Taz(BOC)-Th-Th)n-Pd, with an Mn of 10,800 was also prepared by Pd-catalyzed organometallic polycondensation. (Taz(BOC)-Th-Th)n-Pd showed a UV-Vis absorption peak at λmax = 425 nm, which is reasonable for a Ï-conjugated five-membered ring polymer with a coplanar structure. The deprotection of the BOC group of the polymers proceeded at 200 °C; this BOC-deprotection was investigated using a model compound. The optical and electrochemical properties of the Ï-conjugated polymers are reported.
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Authors
Syusaku Koie, Gentaro Tanaka, Hiroki Fukumoto, Take-aki Koizumi, Takakazu Yamamoto,