Abstract
Two rare three-dimensional (3D) chiral polyoxometalate-based metal–organic framework (POMOF) materials, d- [PMo8VMo4VIO37(OH)3Zn4][BPP]2·2[pyridine]·H2O (d-1) and l-[PMo8VMo4VIO37(OH)3Zn4][BPP]2·2[pyridine]·H2O (l-1) (BPP = 1,3-bis(4-pyridyl)propane) were prepared with achiral ligand under solvothermal conditions. They are the first 3D chiral POM-based frameworks based on a Zn-e-Keggin unit and achiral ligands. The CD spectra and structural analyses indicate that the two polyoxometalate-based metal–organic frameworks are enantiomers. The alternate connection of Zn-e-Keggin cluster and BPP ligands generate helical infinite chains, while each single spiral chain is further interlinked to adjacent neighboring units to produce a 3D regular ordered chiral architecture with a qtz topology. Compound 1 (mixtures of d-1 and l-1) exhibited excellent stability in both acid and base aqueous solutions. When compound 1 was used as an anode electrode material of rechargeable Li-ion batteries (LIBs), outstanding reversib...
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