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Nanocomposite hydrogels consisting of colloidal gold nanoparticles and thermoresponsive N-isopropylacrylamide copolymers (see Figure) are synthesized. The size, morphology, and stability of the nanoparticles are controlled by the amount of thiol group in the polymer side chains. Compared with non-Au-containing hydrogels, remarkably different bulk properties of equilibrium swelling and thermoresponsive phase transition are displayed.
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Wang et al. (2004) studied this question.
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