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Synthesis of Half‐Channels by the Anionic Polymerization of Ethylene Oxide Initiated by Modified Cyclodextrin
Author(s) -
Badi Nezha,
Auvray Loïc,
Guégan Philippe
Publication year - 2009
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200802982
Subject(s) - materials science , cyclodextrin , ethylene oxide , polymerization , poly ethylene , oxide , ethylene , polymer chemistry , chemical engineering , organic chemistry , copolymer , polymer , catalysis , chemistry , composite material , engineering , metallurgy
Amphiphilic star‐shaped oligomers are produced by anionic polymerization of ethylene oxide (EO) using per‐2,3‐di‐ O ‐heptyl‐ β ‐(or γ )cyclodextrins as initiators — a versatile way of synthesizing artificial channels bearing one polyEO branch per glucose unit. The behavior of the amphiphilic molecules in lipid membranes is studied by electrical measurements, which confirms the formation of transient, well‐defined dimeric ionic channels (see figure).