Yang, Sera Kim, Youn Kim, Hyeong Cheol Siddique, Abu B. Youn, Gyusaang Kim, Hyun Jun Park, Hyeon Jong Lee, Jae Yeol Kim, Sehoon Kim, Jungahn 2024-01-20T05:30:14Z 2024-01-20T05:30:14Z 2021-09-03 2016-01 1759-9954 https://pubs.kist.re.kr/handle/201004/124585 In this study, sodium azide (NaN3) was employed as a functional anionic initiator to polymerize ethylene oxide in N, N-dimethylformamide (DMF) leading to the production of the reactive polymeric alkoxide. The molecular weights of all products were controlled within the 2800-10 000 g mol(-1) range on the basis of the stoichiometric balance. NaN3-initiated polymerization of ethylene oxide (EO) and chain end functionalization of the resulting alkoxide were found to be a simple and efficient method for synthesizing heterobifunctional PEOs. The reaction route via chain end tosylation of a-azide PEOs was found to yield almost quantitative functionalizations for the synthesis of alpha-azide-omega-tosyl PEO, alpha-azide-omega-thiol PEO, and alpha-amine-omega-thiol PEO (over 98 mol%). English ROYAL SOC CHEMISTRY RING-OPENING POLYMERIZATION FLIGHT MASS-SPECTROMETRY BLOCK-COPOLYMERS GLYCOL) DERIVATIVES RAFT POLYMERIZATION POLYETHYLENE-GLYCOL SELECTIVE SYNTHESIS ANIONIC SYNTHESIS CLICK CHEMISTRY SODIUM-AZIDE Azide-based heterobifunctional poly(ethylene oxide)s: NaN3-initiated "living" polymerization of ethylene oxide and chain end functionalizations Article 10.1039/c5py01444a 1 POLYMER CHEMISTRY, v.7, no.2, pp.394 - 401 POLYMER CHEMISTRY 7 2 394 401 scie scopus 000367318800015 2-s2.0-84952801774 Polymer Science Polymer Science Article RING-OPENING POLYMERIZATION FLIGHT MASS-SPECTROMETRY BLOCK-COPOLYMERS GLYCOL) DERIVATIVES RAFT POLYMERIZATION POLYETHYLENE-GLYCOL SELECTIVE SYNTHESIS ANIONIC SYNTHESIS CLICK CHEMISTRY SODIUM-AZIDE