Acyclic Diene Metathesis Polymerization of Divinylarenes and Divinylferrocenes with Grubbs-Type Olefin Metathesis Catalysts
作者:Holger Weychardt、Herbert Plenio
DOI:10.1021/om701277p
日期:2008.4.1
5-divinylbenzene, and 9,9-di(2-ethylhexyl)-2,7-divinylfluorene were synthesized from the respective dialdehydes and ADMET polymerized using Grubbs II or Grubbs−Hoveyda−Grela-type olefin metathesis catalysts. The continuous removal of ethene under a dynamic vacuum of 20 mbar at elevated temperatures in high boiling solvents (1,2-dichlorobenzene) resulted in the formation of long-chain poly[2,5-di(2-
1,4-二(2-乙基己基)2,5-二乙烯基苯,1,4-二(2-乙基己氧基)-2,5-二乙烯基苯和9,9-二(2-乙基己基)-2,7-二乙烯基芴分别由二醛合成,并使用Grubbs II或Grubbs-Hoveyda-Grela型烯烃复分解催化剂聚合ADMET。在高沸点溶剂(1,2-二氯苯)中在升高的温度下于20 mbar的动态真空下连续除去乙烯,导致长链聚[2,5-二(2-乙基己基)-对亚苯基亚乙烯基]的形成](M n > 100 kDa,P n = 330,M w / M n = 3.1)和聚[9,9-二(2-乙基己基)芴基-2,7-乙烯基](M n > 70 kDa,Pn = 178)。PPV在蒸发甲苯溶液后形成一个独立的膜。1,3-(二异丙烯基)二茂铁不能以这种方式聚合。用1,1'-二(4-乙烯基苯基)-3,3',4,4'-四甲基二茂铁得到含二茂铁的聚合物。