An effective method for the synthesis of 3D inorganic Ln(iii)-K(i) sulfate open frameworks with unusually high thermal stability: In situ generation of sulfate anions

Huabin Zhang, Mingjian Zhang, Chongbin Tian, Ning Li, Ping Lin, Zhihua Li, Shaowu Du

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14 Scopus citations

Abstract

Through the in situ decomposition of DMSO (dimethyl sulfoxide), heterometallic inorganic frameworks, formulated as [KLn(SO 4) 2H 2O] (Ln = Sm 1, Eu 2, Gd 3, Tb 4, Dy 5, Ho 6, Er 7) were synthesized under the help of facile and effective one-pot solvothermal reactions. These in situ reactions enhanced the reactivity and coordination ability of the sulfate anions, leading to the formation of new 3D lanthanum sulfate frameworks with optical and magnetic properties. Compounds 2 and 4 are strong luminescent materials which display characteristic Eu 3+ and Tb 3+ emission bands in the visible region with high quantum yields and long luminescent lifetimes. Variable-temperature magnetic susceptibility studies revealed that 3 and 5-7 show anti-ferromagnetic behaviors. Their thermal stability, demonstrated from the TGA profiles and temperature dependent XRD measurements, is among the highest of reported lanthanum sulfate frameworks. Additionally, the band structure calculations for 3, and 7, based on the density functional theory methods, were also performed. © The Royal Society of Chemistry 2012.
Original languageEnglish (US)
Pages (from-to)6831-6837
Number of pages7
JournalJournal of Materials Chemistry
Volume22
Issue number14
DOIs
StatePublished - Apr 14 2012
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2022-09-15

ASJC Scopus subject areas

  • Materials Chemistry
  • Chemistry(all)

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