High-efficiency synthesis of dendrimer-like poly(ethylene oxide) via “arm-first” approach

Saisai Zhu, Ru Xia, Peng Chen, Bin Yang, Jibin Miao, Zhengzhi Zheng, Lifeng Su, Jiasheng Qian, Ming Cao, Xiaoshuang Feng

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4 Scopus citations

Abstract

In this study, a dendrimer-like polymer based on poly(ethylene oxide) (PEO) was synthesized through a combination of anionic ring-opening polymerization (AROP) and click reaction via arm-first method. Firstly, the polymeric arm, a linear PEO with one alkynyl group and two bromo groups, was synthesized by AROP of ethylene oxide followed by functionalization with propargyl bromide and esterified with 2-bromopropionic bromide. Second, a star PEO carrying three azide groups was synthesized though AROP of ethylene oxide used 1,1,1-tris(hydrosymethyl) ethane as initiator followed esterificated with 2-bromopropionic acid and azidation. By azide–alkyne click reactions between the azide-terminated PEO star polymer and linear PEO with functionalization alkynyl group, a three generation dendrimer-like PEO, G3-PEO-24Br, was successfully synthesized. The resulting polymers were observed to have precisely controlled molecular weights and compositions with narrow molecular weight distributions.
Original languageEnglish (US)
JournalJournal of Polymer Research
Volume24
Issue number5
DOIs
StatePublished - Apr 14 2017

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