Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Immobilization of Gd(III)-DOTA Complexes in Layered Double Hydroxides Thin Film

  • Lee, Jong Hyeon (Department of Chemistry, The Catholic University of Korea) ;
  • Jung, Duk-Young (Department of Chemistry, Sungkyunkwan Advanced Institute of Nanotechnology, Institute of Basic Sciences, Sungkyunkwan University)
  • Received : 2013.08.25
  • Accepted : 2013.08.30
  • Published : 2013.11.20
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Abstract

Keywords

Experimental

Preparation and Characterization of LDH-DOTA(Gd) Thin Film. LDH-carbonate, [Mg4Al2(OH)12]CO3·nH2O, was prepared using the coprecipitation method.5a,b The resulting precipitate was hydrothermally treated in deionized water at 180 ℃ to obtain a larger crystal size and to improve crystallinity of LDH-carbonate, followed by drying at 70 ℃.12 The thin film of LDH-carbonate was prepared on silicon (100) wafers.6 To prepare the LDH-DOTA, the thin film of LDHcarbonate was transferred into a Teflon-coated autoclave vessel containing 20 mg of DOTA and a binary mixture of ethanol and toluene, and heated at 120 ℃ for 72 h. The LDH-DOTA(Gd) was prepared by immersing the sample in 5 mM of ethanolic Gd(acetate)3·nH2O solution for 1h. The XRD patterns were measured using a Rigaku D/MAX-2000 Ultima using Cu-Kα radiation (λ = 1.5405 Å). The SEM and TEM images were taken on a JEOL 7401F and a 300 kV, respectively. FT-IR was undertaken on a Biorad FTS 6000 equipped with a DuraSampl IR II diamond accessory with an ATR mode.

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