Supramolecular 2D and 3D frameworks based on 1-amino-2-phenylethane-1,1-diphosphonic acid

  • Pan L
  • Yuan Y
  • Xiao Y
 et al. 
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Abstract

The 1-amino-2-phenylethane-1,1-diphosphonic acid (APhEDPH4) is easily assembled to form two-dimensional (2D) supramolecular layer. It crystallizes from water solution to form hydrated compound APhEDPH4·3H2O (1). By introducing a base bridging ligand 4,4′-bipyridyl (4,4′-bipy), another supramolecular compound (APhEDPH3)2·(4,4′-bipyH2) (2) is obtained. Both of them were characterized by X-ray diffraction (XRD), elemental analysis (EA), infrared spectrometry (IR), thermogravimetric analysis (TGA) and single crystal X-ray diffraction. In compound 1, APhEDPH4molecules form 2D supramolecular layers and extend to 2D sandwich type supramolecular architecture with the existence of water molecules. Whereas, compound 2 contains 2D supramolecular layers constructed by APhEDPH3-anions, and shows a three-dimensional (3D) tessellate-type supramolecular structure via the bridging effect of 4, 4′- bipyH22 +. Compound 2 shows intense blue photoluminescence with when excited by ultraviolet ray. The effect of bridged ligand on the dimensions of the final product is also discussed. © 2008 Elsevier B.V. All rights reserved.

Author-supplied keywords

  • 1-Amino-2-phenylethane-1,1-diphosphonic acid
  • Sandwich type
  • Supramolecular structure
  • Tessellate-type

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