کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5191252 | 1381228 | 2005 | 6 صفحه PDF | دانلود رایگان |
An amphiphilic rod-coil ABC triblock copolymers using rigid oligo(para-phenyleneethynylene) (OPE) as the middle rod segment, poly(ethylene oxide)-block-oligo(para-phenyleneethynylene)-block-polystyrene (PEO-b-OPE-b-PS), was designed and successfully synthesized. In the synthetic route, a kind of macroinitiator, PEO-b-OPE-Br was achieved by stepwise coupling of iodo-terminated poly(ethylene oxide) and oligo(para-phenyleneethynylene) with amino end group, capping with 2-bromopropionyl bromide. Subsequently, from this macroinitiator atom transfer radical polymerization (ATRP) of styrene was performed to obtain PEO-b-OPE-b-PS. The resulting copolymers were characterized by nuclear magnetic resonance (NMR) and gel permeation chromatography (GPC). All these novel copolymers were affirmed to have well-defined structures and narrow molecular weight distributions.
Journal: Polymer - Volume 46, Issue 18, 23 August 2005, Pages 7572-7577