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Synthesis of nano-bowls with a Janus template.

ABSTRACT: Colloidal particles with two or more different surface properties (Janus particles) are of interest in catalysis, biological imaging, and drug delivery. Eccentric nanoparticles are a type of Janus particle consisting of a shell that envelops the majority of a core particle, leaving a portion of the core surface exposed. Previous work to synthesize eccentric nanoparticles from silica and polystyrene have only used microemulsion techniques. In contrast we report the sol-gel synthesis of eccentric Janus nanoparticles composed of a silica shell around a carboxylate-modified polystyrene core (Janus templates). In addition, we have synthesized nano-bowl-like structures after the removal of the polystyrene core by organic solvent. These Janus templates and nanobowls can be used as a versatile platform for site-specific functionalization or controlled theranostic delivery.

SUBMITTER: Mo AH

PROVIDER: S-EPMC4353600 | biostudies-literature | 2015 Jan

REPOSITORIES: biostudies-literature

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Synthesis of nano-bowls with a Janus template.

Mo Alexander H AH Landon Preston B PB Emerson Chris D CD Zhang Chen C Anzenberg Paula P Akkiraju Siddhartha S Lal Ratnesh R

Nanoscale 20150101 2

Colloidal particles with two or more different surface properties (Janus particles) are of interest in catalysis, biological imaging, and drug delivery. Eccentric nanoparticles are a type of Janus particle consisting of a shell that envelops the majority of a core particle, leaving a portion of the core surface exposed. Previous work to synthesize eccentric nanoparticles from silica and polystyrene have only used microemulsion techniques. In contrast we report the sol-gel synthesis of eccentric ...[more]

PMID: 25431230

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