Wet-Chemical Synthesis of Chiral Colloids

手性胶体的湿化学合成

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作者:Samia Ouhajji, Bas G P van Ravensteijn, Carla Fernández-Rico, Kanvaly S Lacina, Albert P Philipse, Andrei V Petukhov

Abstract

We disclose a method for the synthesis of chiral colloids from spontaneously formed hollow sugar-surfactant microtubes with internally confined mobile colloidal spheres. Key feature of our approach is the grafting of colloid surfaces with photoresponsive coumarin moieties, which allow for UV-induced, covalent clicking of colloids into permanent chains, with morphologies set by the colloid-to-tube diameter ratio. Subsequent dissolution of tube confinement yields aqueous suspensions that comprise bulk quantities of a variety of linear chains, including single helical chains of polystyrene colloids. These colloidal equivalents of chiral (DNA) molecules are intended for microscopic study of chiral dynamics on a single-particle level.

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