Abstract
n-Butyllithium-initiated ring-opening polymerization of ethylene oxide with potassium t-butoxide in the mixture of benzene and dimethyl sulfoxide (DMSO) at 35 °C yielded corresponding “living” polymeric alkoxide. The molecular weight was well controlled on the basis of stoichiometric balance. Quantitative chain-end functionalizations, such as the amination, the azidation, and the thiolation of polymeric alkoxide, were performed. The yields were almost quantitative (over 98 mol%). The resulting products were characterized by the combination of 1H NMR spectroscopy, UV/Visible spectroscopy, FTIR, MALDI-TOF MS analysis, and size exclusion chromatographic analysis. Open image in new window
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