Fluorine extraction from organofluorine molecules to make fluorinated clusters in yttrium MOFs. Academic Article uri icon

abstract

  • A new rare earth based two-dimensional coordination network and a three-dimensional metal-organic framework (MOF) have been synthesized using bicinchoninic acid (BCA) and yttrium(iii) ions. Yttrium dimer nodes are formed in the absence of a modulator, resulting in a 2D layered coordination network (Y-BCA-2D). The presence of fluorinating agents, e.g., 2-fluorobenzoic acid (2-FBA), 2,6-difluorobenzoic acid (2,6-DFBA), and perfluorohexanoic acid (PFHxA) result in 3-F bridged metal hexaclusters (Y6F8) that form a three-dimensional MOF (Y-BCA-3D). It was found that Y3+ can break highly stable C-F bonds in aromatic and aliphatic fluorinated compounds. Single-crystal X-ray diffraction (SC-XRD) shows the presence of fluorine in the metal cluster which was confirmed by energy dispersive X-ray spectroscopy (EDS). High resolution X-ray photoelectron spectroscopy (XPS) and 19F Nuclear Magnetic Resonance (NMR) also verify the presence of metal-fluorine bonds in the cluster. The Y-BCA-3D MOF selectively adsorbs CO2 but not N2.

published proceedings

  • Chem Sci

altmetric score

  • 18.95

author list (cited authors)

  • Abbas, M., Maceda, A. M., Firouzi, H. R., Xiao, Z., Arman, H. D., Shi, Y., Zhou, H., & Balkus, K. J.

citation count

  • 2

complete list of authors

  • Abbas, Muhammad||Maceda, Amanda M||Firouzi, Hamid R||Xiao, Zhifeng||Arman, Hadi D||Shi, Yanshu||Zhou, Hong-Cai||Balkus, Kenneth J

publication date

  • December 2022