4.7 Article

Silver-Cytidine Coordination Polymer: Electrical Properties, Modulating Intrachain Ag...Ag Distance, and MOF-Nanosheet Transformation

Journal

CRYSTAL GROWTH & DESIGN
Volume 21, Issue 8, Pages 4398-4405

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/acs.cgd.1c00330

Keywords

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Funding

  1. School of Chemistry, Newcastle University
  2. EPSRC [EP/S015310/1]
  3. EPSRC [EP/S015310/1] Funding Source: UKRI

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The study demonstrates that changing the solvent can modulate the intermetallic distance of the silver ion chains in a coordination polymer without affecting its electrical conductivity. Furthermore, ultrasonication can retain these silver ion chains and form well-defined nanosheets.
A change of solvent provides a means to modulate the intermetallic distance of the Ag ion chains in solvated structures of [AgI(cytidine-5'-monophosphate)], a 3D coordination polymer which features the less common O-2,N-3-binding mode for the nucleobase. Though the shortest Ag center dot center dot center dot Ag separation is within 5% of that in the metallic element, the coordination polymer is not electrically conducting, as shown by oriented singlecrystal I/V measurements. Band structure calculations for the isolated coordination chain ([Ag-(O-2,N-3-Cyt)](+))(n) also support this. Additionally, we demonstrate that these AgI ion chains are retained when crystalline MOF samples are processed as dispersions in the liquid phase by ultrasonication, yielding well-defined bilayer nanosheets through cleavage of phosphoester O-Ag bonds.

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