Complexation of uranyl ions by N-(sulfoethyl)-iminodiacetic acid:hydrothermal synthesis, luminescence, and uranyl sequestration

Reported here is a water-soluble ligand, N-（sulfoethyl）-iminodiacetic acid （H3SEIDA）, used for the complexation of uranyl ions. A coordination compound composed of uranyl cation and N-（sulfonatoethyl）-ammoniodiacetate （SEADA2-） zwitterion was synthesized from an acidic aqueous solution. This compound features a 2D undulating fes （4.82） coordination layer that is stacked and linked by hydrogen-bonding interaction to form a 3D supramolecular framework with a 1D larger-cycle channel. Thermal analysis demonstrates the relatively weak bonding between uranyl cation and SEADA2 zwitterion. The monomeric uranyl-based fluorescence emission is red-shifted by about thermal synthesis of this uranyl compound was successfully 5 nm compared to that of uranyl nitrate hexahydrate. The hydro- applied to the sequestration of uranyl ions.

Reported here is a water-soluble ligand, N-(sulfoethyl)-iminodiacetic acid(H3SEIDA), used for the complexation of uranyl ions. A coordination compound composed of uranyl cation and N-(sulfonatoethyl)-ammoniodiacetate(SEADA2?) zwitterion was synthesized from an acidic aqueous solution. This compound features a 2D undulating fes(4.82) coordination layer that is stacked and linked by hydrogen-bonding interaction to form a 3D supramolecular framework with a 1D larger-cycle channel. Thermal analysis demonstrates the relatively weak bonding between uranyl cation and SEADA2? zwitterion. The monomeric uranyl-based fluorescence emission is red-shifted by about 5 nm compared to that of uranyl nitrate hexahydrate. The hydrothermal synthesis of this uranyl compound was successfully applied to the sequestration of uranyl ions.