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Micelles and Vesicles Formed by Polyoxometalate–Block Copolymer Composites


  • W.B. is grateful for a JSPS Fellowship. This work was supported by the Core Research for Evolutional Science and Technology (CREST) program of Japan Science and Technology Agency (JST), and Grants-in-Aid for Scientific Research, Center for Nano Lithography and Analysis, and The University of Tokyo Global COE Program Chemistry through Cooperation of Science and Engineering from the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan. Drs. H. S. Kato (RIKEN) and S. Inasawa (Univ. of Tokyo) are acknowledged for the SFM measurements. Rigaku corporation is acknowledged for the SAXS and XRF measurements.


original image

Core–corona composites were prepared by incorporating a hydrophilic polyoxometalate (POM) into poly(styrene-b-4-vinyl-N-methylpyridinium iodide) matrices in acidic aqueous solution (see scheme). On dispersal in toluene they self-assemble into micellar and vesicular morphologies (see TEM images), which can be controlled by means of the weight fraction of POM.