Self-oscillating microgels have been obtained by introducing a Ru catalyst for the Belousov–Zhabotinsky (BZ) reaction into a cross-linked copolymer. In this microgel system, the chemical energy of the BZ reaction is converted to rhythmic swelling/deswelling with self-flocculating/self-dispersing oscillation of the microgel around its phase-transition temperature (see scheme; Ru(bpy)3 denotes a Ru tris-bipyridine complex bearing a vinyl group).
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Suzuki et al. (2007) studied this question.
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