Synthesis, crystal structures and photoluminescence properties of two silver(I) coordination polymers with nano size channels based on 2-sulfoterephthalic acid ligand

Self-assembly of silver nitrate with 2-sulfoisophthalic acid monosodium salt (NaH(2)stp) produced two novel Ag(I) coordination polymers, [Ag-3(2-stp)(H2O)](n) (1) and [Ag-2(2-Hstp)](n) (2), respectively. Single-crystal X-ray diffraction reveals that compound 1 has a 3D supramolecular structure containing Ag center dot center dot center dot Ag and Ag center dot center dot center dot O weak interactions. Compound 2 also features a 3D supramolecular network formed by Hstp(2) ligands and pi center dot center dot center dot pi stacking interactions. In the solid state and at room temperature, compound 1 exhibits blue photoluminescence with a maximum at 453 nm upon excitation at 383 nm. Compound 2 shows green photoluminescence with a maximum at 524 nm upon excitation at 330 nm. (C) 2012 Elsevier B.V. All rights reserved.