作者:James B. Beil、Steven C. Zimmerman
DOI:10.1021/ma034556t
日期:2004.2.1
initiator with 1-but-3-enyl-4-vinylbenzene and styrene at low conversion produced soluble eight-armed star block copolymers. Through the ring-closing metathesis (RCM) reaction, the alkene groups of the polymer were intramolecularly cross-linked. The ester groups linking the cross-linked polymer arms to the porphyrin core were hydrolyzed, producing a “cored” star polymer with a molecular weight of approximately
报道了一种合成方法,用于制备纳米级“有芯”星形聚合物。一个5,10,15,20-四(4-羧基苯基)卟啉核被四个2,2,6,6-四甲基哌啶基-1-氧基(TEMPO)引发基团官能化。合成了苯乙烯和4-羟基苯乙烯的四臂星形共聚物,并用3,5-二(3-丁烯-1-氧基)苄基溴官能团进行了官能化,但溶解性较差。作为替代,将5,10,15,20-四(3',5'-二羟基苯基)卟啉用能够引发原子转移自由基聚合(ATRP)的2-溴-2-甲基-丙酰基进行官能化。核引发剂与1-丁-3-烯基-4-乙烯基苯和苯乙烯的低转化率共聚产生可溶的八臂星形嵌段共聚物。通过闭环复分解(RCM)反应,聚合物的烯基分子内交联。