![]() ![]() This approach stands out, as compared to Pt monolayer deposition techniques atop metal foams, or a recently reported atomic layer deposition (ALD), as a way of depositing submonolayer coverage of precious catalysts within the 1–10 nm pores found in microporous solids. Immediately upon electrochemical reduction of the Pt(II/IV), metallic Pt (most likely atomistic Pt) was observed. The XPS analysis of sample impregnated with Pt ions confirmed the presence of Pt(II/IV) species and did not show any signs of metallic nanoparticles, as further confirmed by transmission electron microscopy. The pyrimidine porous-organic polymer (PyPOP) was selected because of the abundant Lewis-base binding sites within its backbone, to be combined with graphene to produce the composite that was shown to uptake Pt ions simply upon brief incubation in H 2PtCl 6 solution in acetonitrile. A facile, postsynthetic treatment of a designed composite of pyrimidine-based porous-organic polymer and graphene ( ) with ionic Pt, and the subsequent uniform electrodeposition of Pt metallic within the pores, led to the formation of a composite material ( ).
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