Nesting Well-Defined Pt Nanoparticles within a Hierarchically Porous Polymer as a Heterogeneous Suzuki-Miyaura Catalyst

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A hierarchically porous polymer (HPP) consisting of micropores (similar to 1 nm) within a 3D continuous mesoporous wall (similar to 15 nm) was used to support well-defined Pt nanoparticles (2 nm in diameter) as a heterogeneous catalyst for the Suzuki-Miyaura cross-coupling reaction in the liquid phase. The ligand-capped nanoparticles were loaded into the polymer and treated with plasma to expose the active surface. The dual porosity was essential: the block polymer-templated mesopores provided the reactants facile access to the nanoparticle center, which was firmly immobilized by the microporous surface. Compared to inorganic mesoporous silica supports, which are intrinsically susceptible to basic hydrolysis, the Pt-HPP featured higher activity for all halide leaving groups, even in green solvents, as well as excellent recyclability. Only 5% decrease in activity was observed after 10 cycles. Pt-HPP was one of the most active heterogeneous catalysts for aryl chloride substrates compared to literature Pt or Pd examples.
Publisher
AMER CHEMICAL SOC
Issue Date
2021-04
Language
English
Article Type
Article
Citation

ACS APPLIED NANO MATERIALS, v.4, no.4, pp.4070 - 4076

ISSN
2574-0970
DOI
10.1021/acsanm.1c00396
URI
http://hdl.handle.net/10203/285483
Appears in Collection
CH-Journal Papers(저널논문)
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