Investigation of catalyst-transfer condensation polymerization for synthesis of poly(<i>p</i>-phenylenevinylene)
作者:Masataka Nojima、Yoshihiro Ohta、Tsutomu Yokozawa
DOI:10.1002/pola.27281
日期:2014.9.15
Pd initiator were investigated under catalyst‐transfer condensation polymerization conditions for the synthesis of well‐defined poly(p‐phenylenevinylene) (PPV). The Kumada‐Tamao polymerization of vinyl Grignard‐type monomer 1 with Ni(dppp)Cl2 at room temperature did not proceed, whereas aryl Grignard‐type monomer 2 afforded oligomers of low molecular weight. Matrix‐assisted laser desorption ionization
1,4-二烷氧基-2-溴-5-的熊田-玉尾耦合聚合(2- chloromagnesiovinyl)苯(1)和1,4-二烷氧基-2-(2-溴乙烯基)-5- chloromagnesiobenzene(2)与2- 2-[((2,5-二烷氧基-4-碘代苯基)]乙烯基} -4,4,5,5-四甲基-1,3,2-二氧杂硼烷的镍催化剂和Suzuki-Miyaura偶联聚合(3) ,其溴对应4,和2,5-二烷氧基-4-(2-溴乙烯基)苯基硼酸(5催化剂转移缩聚条件下)与钯引发剂进行了调查良好定义的合成聚(p -phenylenevinylene )(PPV)。乙烯基格氏试剂单体1与Ni(dppp)Cl 2的Kumada-Tamao聚合在室温下没有进行,而芳基格氏试剂型单体2则提供了低分子量的低聚物。由2获得的聚合物的基质辅助激光解吸电离飞行时间(MALDI-TOF)质谱表明格利雅(Grignard)端基