Nickel-2,2′-Bipyridyl and Palladium-Triphenylphosphine Complex Promoted Synthesis of New π-Conjugated Poly(2-hexylbenzotriazole)s and Characterization of the Polymers

A nickel(0) complex (Ni‐bpy) promoted dehalogenative polycondensation of 4,7‐dibromo‐2‐hexylbenzotriazole gives the new π‐conjugated polymer, polybenzotriazole [P(BTz)]. Palladium‐triphenylphosphine [Pd(PPh3)4] catalyzed the copolymerization between 4,7‐dibromo‐2‐hexylbenzotriazole with 2,5‐diethyny...

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Bibliographic Details
Published in:Advanced synthesis & catalysis 2004-12, Vol.346 (13-15), p.1818-1823
Main Authors: Tanimoto, Akitoshi, Yamamoto, Takakazu
Format: Article
Language:English
Subjects:
benzotriazole
Borates
Copolymerization
cross-coupling
Manganese
Molecular weight
Nickel
palladium
Photoluminescence
polymerization
Polymers
Synthesis
π-conjugated polymers
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Summary:A nickel(0) complex (Ni‐bpy) promoted dehalogenative polycondensation of 4,7‐dibromo‐2‐hexylbenzotriazole gives the new π‐conjugated polymer, polybenzotriazole [P(BTz)]. Palladium‐triphenylphosphine [Pd(PPh3)4] catalyzed the copolymerization between 4,7‐dibromo‐2‐hexylbenzotriazole with 2,5‐diethynyl‐1,4‐dihexyloxybenzene and 9,9′‐dihexylfluorene‐2,7‐bis(trimethylene borate) to give the corresponding polymers P(BTz‐AE) and P(BTz‐F), respectively. The number average molecular weights, Mn, of the polymers ranged from 3000 to 7400. P(BTz‐AE) showed a photoluminescence (PL) peak at 500 nm in CHCl3 with a high quantum yield of PL (87%).
ISSN:1615-4150
1615-4169
DOI:10.1002/adsc.200404227