Dynamic hook-and-eye nanoparticle sponges

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Systems in which nanoscale components of different types can be captured and/or released from organic scaffolds provide a fertile basis for the construction of dynamic, exchangeable functional materials. In such heterogeneous systems, the components interact with one another by means of programmable, noncovalent bonding interactions. Herein, we describe polymers that capture and release functionalized nanoparticles selectively during redox-controlled aggregation and disaggregation, respectively. The interactions between the polymer and the NPs are mediated by the reversible formation of polypseudorotaxanes, and give rise to architectures ranging from short chains composed of few nanoparticles to extended networks of nanoparticles crosslinked by the polymer. In the latter case, the polymer/nanoparticle aggregates precipitate from solution such that the polymer acts as a selective 'sponge' for the capture/release of the nanoparticles of different types.
Publisher
NATURE PUBLISHING GROUP
Issue Date
2009-12
Language
English
Article Type
Article
Keywords

MOLECULAR-SIZE DISTRIBUTION; METAL NANOPARTICLES; GOLD NANOPARTICLES; DRUG-DELIVERY; PSEUDOROTAXANES; NANOVALVES; ASSEMBLIES; POLYMERS; MACHINES; CRYSTALS

Citation

NATURE CHEMISTRY, v.1, no.9, pp.733 - 738

ISSN
1755-4330
DOI
10.1038/NCHEM.432
URI
http://hdl.handle.net/10203/101007
Appears in Collection
EEW-Journal Papers(저널논문)
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