Unusual high thermal stability within a series of novel lanthanide TATB frameworks: Synthesis, structure, and properties (TATB = 4,4',4"-s- Triazine-2,4,6-triyl-tribenzoate)

Huabin Zhang, Ning Li, Chongbin Tian, Tianfu Liu, Fenglei Du, Ping Lin, Zhihua Li, Shaowu Du

Research output: Contribution to journalArticlepeer-review

77 Scopus citations

Abstract

A series of multifunctional lanthanide-organic frameworks Ln(TATB)(H 2O) (Ln = Y 1, Eu 2, Gd 3, Tb 4, Dy 5, Ho 6, and Er 7; TATB = 4,4',4"-s-triazine-2,4,6-triyltribenzoate) with an unprecedented (4,8)-connected topology have been synthesized and characterized. The structures of these compounds were determined by single crystal X-ray diffraction and their thermal stability, sorption, as well as luminescent and magnetic properties were also investigated. Compounds 1-7 are isomorphic and present an open non-interpenetrated three-dimensional microporous framework constructed by infinite dinuclear-based, rod-shaped lanthanide-carboxylate secondary building units (SBUs) which arranged in nearly mutually perpendicular directions and interwoven by TATB linkers. All these compounds exhibit very high thermal stability and are stable up to 550 °C. The pore characteristics and gas sorption properties of these compounds were studied by experimentally measuring different gases (CO 2, N 2, and H 2) and different solvent molecules (H 2O and CH 3OH). The luminescent properties of compounds 1-7 in the solid state were investigated. The results show that 2 and 4 exhibited relatively high quantum yields and lifetime values, suggesting that they could be good candidates for light-emitting diodes (LEDs) and light applications. The variable-temperature magnetic studies show that the magnetic interaction between the Ln(III) ions in 2-7 was mainly due to the antiferromagnetic coupling as well as the depopulation of the Stark levels. The spin-orbit coupling parameter λ for Eu(III) (472 cm -1) has been obtained for 2. The in-phase and out-phase signals χ' MT and χ" M of 5 exhibit frequency dependence. © 2012 American Chemical Society.
Original languageEnglish (US)
Pages (from-to)670-678
Number of pages9
JournalCrystal Growth and Design
Volume12
Issue number2
DOIs
StatePublished - Feb 1 2012
Externally publishedYes

Bibliographical note

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

ASJC Scopus subject areas

  • General Materials Science
  • General Chemistry
  • Condensed Matter Physics

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