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Synthesis of Gold Nanoparticles Modified with Ionic Liquid Based on the Imidazolium Cation

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journal contribution
posted on 17.03.2004, 00:00 by Hideaki Itoh, Kensuke Naka, Yoshiki Chujo
The synthesis and processing of nanoparticles consisting of metallic nanocrystal cores and organic monolayer shells promise interesting technological applications. Here, we report the synthesis of gold nanoparticles modified with ionic liquids based on the imidazolium cation. Aggregation-induced color changes of the gold nanoparticles in an aqueous solution were used as an optical sensor for anions via anion exchange of ionic liquid moiety. We also demonstrated the phase transfer of the gold nanoparticles from aqueous media to ionic liquid.

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