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Synthesis and radical polymerization of 2-vinyldibenzothiophene

✍ Scribed by Osamu Shimomura; Toshihiko Sato; Ikuyoshi Tomita; Masato Suzuki; Takeshi Endo

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
189 KB
Volume
35
Category
Article
ISSN
0887-624X

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✦ Synopsis

A monomer having dibenzothiophene moiety, 2-vinyldibenzothiophene (1), was prepared by the Ni-catalyzed cross-coupling reaction of vinyl bromide with the Grignard reagent of 2-bromodibenzothiophene. The radical homopolymerization of 1 and the copolymerization with styrene were carried out at 60ЊC in toluene (1.0 M) for 20 h using AIBN (5 mol %) as an initiator to obtain the corresponding polymers in high yields. Thermal analyses of the copolymers showed that both 10% weight loss and glass transition temperatures increase when increasing the content of 1 unit. The monomer reactivity ratio was evaluated as r 1 Å 2.55 ( 1 ) and r 2 Å 0.16 ( styrene ) .

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