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Light switch: Noncovalently connected micelles are formed by the photoisomerization of azobenzene groups in copolymer building blocks and the hydrogen-bonding interaction within the polymer pair. The UV-induced micellar structure can be fixed through core cross-linking, which allows the reversible optical switching of a micelle–hollow-sphere transition (see picture). Supporting information for this article is available on the WWW under http: //www. wiley-vch. de/contents/jc₂002/2006/z504364ₛ. pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
Liu et al. (Fri,) studied this question.