Living Anionic Polymerization of Styrene Derivatives Containing Triphenylamine Moieties through Introduction of Protecting Group
作者:Beom-Goo Kang、Nam-Goo Kang、Jae-Suk Lee
DOI:10.1021/ma1014353
日期:2010.10.26
We carried out the anionic polymerization of styrene derivatives containing the triphenylamine moieties, 4,4′-vinylphenyltriphenylamine (A) and 4,4′-vinylphenyl-N,N-bis(4-tert-butylphenyl)benzenamine (B), with a variety of initiators in tetrahydrofuran (THF) at −78 °C. The anionic polymerization of A was performed with sec-butyllithium, sec-butyllithium with additives, and (diphenylmethyl)potassium
我们对含有三苯胺部分,4,4'-乙烯基苯基三苯胺(A)和4,4'-乙烯基苯基-N,N-双(4-叔丁基苯基)苯胺(B)的苯乙烯衍生物进行了阴离子聚合-78°C下,四氢呋喃(THF)中有多种引发剂。A的阴离子聚合是在-78℃下用仲丁基锂,具有添加剂的仲丁基锂和(二苯基甲基)钾在THF中进行的。在所有情况下,聚合期间在聚合物链之间发生分子间副反应。相比之下,B的阴离子聚合反应成功进行了sec丁基锂和萘化钾在THF中于-78°C放置0.5 h,而未观察到任何分子间副反应。得到了具有可预测的分子量和窄的分子量分布(M w / M n = 1.05-1.11)的明确定义的poly(B)。随后尝试了B与苯乙烯和2-乙烯基吡啶的顺序嵌段共聚,并定量合成了明确定义的嵌段共聚物,即聚苯乙烯-b-聚(B)和聚(B)-b-聚(2-乙烯基吡啶) 。所得聚(B)进行了调查。