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Syntheses, structure and photoluminescent properties of lanthanide oxalatosulfocarboxylate coordination polymers

Chinese Science Bulletin, ISSN: 1001-6538, Vol: 57, Issue: 14, Page: 1659-1664
2012
  • 3
    Citations
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  • 10
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Metrics Details

  • Citations
    3
    • Citation Indexes
      3
  • Captures
    10

Article Description

Hydrothermal reactions of oxalic acid (H ox) and 2-sulfobenzoic acid (H L) with lanthanide oxide or hydroxide yielded five lanthanide oxalatosulfocarboxylates. They have a general formula [Ln L (ox)(H O) ] [Ln = La (1), Nd (2), Eu (3), Gd (4), Tb (5)]. Their structures were characterized by single crystal X-ray diffraction, powder X-ray diffraction (PXRD), infrared (IR) spectroscopy, elemental analysis (EA), and thermogravimetric analysis (TGA). 1-5 are isostructural coordination polymers and feature one-dimensional (1D) chains, which are extended into 3D supramolecular frameworks through inter-chain hydrogen bonds between coordinated H O donors and oxygen acceptors from carboxylate, sulfonate and oxalate groups. In addition, the solid-state photoluminescence properties of the Nd (2), Eu (3) and Tb (5) derivatives have been measured at room temperature. The Eu and Tb-containing coordination polymers (CPs) exhibit intense red and green luminescence emissions, respectively, with lifetimes in the order of millisecond. © 2012 The Author(s).

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