IBS Publications Repository: Hollow nanotubular toroidal polymer microrings

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Hollow nanotubular toroidal polymer microrings

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Author(s): Jiyeong Lee; Kangkyun Baek; Kim M.; Gyeongwon Yun; Yong Ho Ko; Lee N.-S.; Ilha Hwang; Jeehong Kim; Natarajan R.; Park C.G.; Sung W.; Ki Moon Kim

Subject: alkene, ; anthraquinone derivative, ; carbon nanotube, ; fullerene C60, ; fullerene derivative, ; metal nanoparticle, ; nanotube, ; polymer, ; silver, ; thiol derivative, ; article, ; chemistry, ; light, ; polymerization, ; theoretical model, ; ultrastructure, ; Alkenes, ; Anthraquinones, ; Fullerenes, ; Light, ; Metal Nanoparticles, ; Models, Theoretical, ; Nanotubes, ; Nanotubes, Carbon, ; Polymerization, ; Polymers, ; Silver, ; Sulfhydryl Compounds

Abstract: Despite the remarkable progress made in the self-assembly of nano- and microscale architectures with well-defined sizes and shapes, a self-organization-based synthesis of hollow toroids has, so far, proved to be elusive. Here, we report the synthesis of polymer microrings made from rectangular, flat and rigid-core monomers with anisotropically predisposed alkene groups, which are crosslinked with each other by dithiol linkers using thiol-ene photopolymerization. The resulting hollow toroidal structures are shape-persistent and mechanically robust in solution. In addition, their size can be tuned by controlling the initial monomer concentrations, an observation that is supported by a theoretical analysis. These hollow microrings can encapsulate guest molecules in the intratoroidal nanospace, and their peripheries can act as templates for circular arrays of metal nanoparticles. © 2014 Macmillan Publishers Limited. All rights reserved.