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RESEARCH PRODUCT

Janus Micelles Induced by Olefin Metathesis

Frederik R. WurmHannah M. KönigStefan HilfAndreas F. M. Kilbinger

subject

Contrast enhancementOlefin metathesisChemistrySupramolecular chemistryRegioselectivityGeneral ChemistryBiochemistryMicelleCatalysisCatalysisColloid and Surface ChemistryPolymer chemistryCopolymerOrganic chemistryJanus

description

A facile one-step procedure for hydrophobic modification and simultaneous TEM contrast enhancement via a regioselective olefin metathesis reaction using Grubbs' catalyst is presented. Polyether diblock copolymers were investigated, and both the chain ends of the hydrophilic and the hydrophobic block were hydrophobically modified. Modification of the hydrophilic block results in nonsymmetric supramolecular structures (Janus micelles) which self-assemble into larger hierarchically organized super-micelles.

https://doi.org/10.1021/ja801919y