Journal
ACS NANO
Volume 9, Issue 7, Pages 6951-6960Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.5b01138
Keywords
mussel-inspired polydopamine; metal-organic framework; core-shell nanostructure; nanohybrid; recyclable nanocatalyst
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Funding
- Singapore Ministry of Education [RGT19/13, MOE2013-T3-1-002]
- National Institutes of Health [R37 DE014193, R01 EB005772]
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We report a versatile strategy based on the use of multifunctional mussel-inspired polydopamine for constructing well-defined single-nanoparticle@metal-organic framework (MOF) core-shell nanohybrids. The capability of polydopamine to form a robust conformal coating on colloidal substrates of any composition and to direct the heterogeneous nucleation and growth of MOFs makes it possible for customized structural integration of a broad range of inorganic/organic nanoparticles and functional MOFs. Furthermore, the unique redox activity of polydopamine adds additional possibilities to tailor the functionalities of the nanohybrids by sandwiching plasmonic/catalytic metal nanostructures between the core and shell via localized reduction. The core shell nanohybrids, with the molecular sieving effect of the MOF shell complementing the intrinsic properties of nanoparticle cores, represent a unique class of nanomaterials of considerable current interest for catalysis, sensing, and nanomedicine.
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