共 18 条
Synthesis of well-defined polythiophene with oxyethylene side chain: Effect of phosphine ligands on catalyst-transfer polycondensation
被引:63
作者:
Adachi, Isao
[1
]
Miyakoshi, Ryo
[1
]
Yokoyama, Akihiro
[1
]
Yokozawa, Tsutomu
[1
]
机构:
[1] Kanagawa Univ, Dept Mat & Life Chem, Kanagawa Ku, Yokohama, Kanagawa 2218686, Japan
关键词:
D O I:
10.1021/ma061809k
中图分类号:
O63 [高分子化学(高聚物)];
学科分类号:
070305 ;
080501 ;
081704 ;
摘要:
The effect of phosphine ligand of the Ni catalyst on the polymerization of 2-bromo-5-chloromagnesio-3-[2-(2-methoxyethoxy)ethoxy]-methylthiophene (PMEEMT) was investigated. Threatment of 2-bromo-5-iodo-3-[2-(2-methoxyethoxy)ethoxy]- methylthiophene with equivalent of isopropylmagnesium chloride at 0° C for 1 hour gave magnesium-iodine exchange reaction and the polymerization was carried out by the addition of Ni catalyst to the reaction mixture. The molecular weight increased linearly in proportion to the feed ratio and the molecular weight was controlled by the amount of catalyst. The end groups of PMEEMT were analyzed by matrix-assisted by laser desorption ionization time-of-flight (MALDI-TOF) mass spectrometry with dithranol as a matrix in the presence of sodium trifluoroacetate.
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页码:7793 / 7795
页数:3
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