Pro-Ionomers: An Anion Metathesis Approach to Amphiphilic Block Ionomers from Neutral Precursors


  • We thank Prof. Stephen E. Webber for many fruitful discussions. We are grateful to the U.S. Army Research Office (W911NF-05-1-0430 and W911NF-06-1-0147), the National Science Foundation (CHE-0645563), the Petroleum Research Fund as administered by the American Chemical Society (44077-G1), and the Robert A. Welch Foundation (F-1621 and FM-356) for their generous financial support. Supporting Information is available online from Wiley InterScience or from the authors.


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Starting from neutral “pro-ionomeric” diblock copolymers, photoluminescent benzobis(imidazolium) (BBI) dihalide salts are used to effect anion metathesis, affording fluorescent block ionomers in a single step. In aqueous media, the ionomers self-assemble into either core- or shell-crosslinked micellular structures, depending on the copolymer and BBI used (see figure).