Synthesis and radical polymerization of 2‐vinyldibenzothiophene
O Shimomura, T Sato, I Tomita… - Journal of Polymer …, 1997 - Wiley Online Library
O Shimomura, T Sato, I Tomita, M Suzuki, T Endo
Journal of Polymer Science Part A: Polymer Chemistry, 1997•Wiley Online LibraryA 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 60° C 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 …
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 60° C 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 …
Abstract
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 60°C in toluene (1.0M) 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 r1 = 2.55 (1) and r2 = 0.16 (styrene). © 1997 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 35: 2813–2819, 1997
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