Synthesis, Structure, and Photoluminescence Properties of a Metal-Organic Framework with Hexagonal Channels: Selective Turn-On Sensing for Mg2+ Ion

Sunhwi Eom, Sora Park, Jeong Hwa Song, Woo Ram Lee, Han Geul Lee, Dong Won Kang, Joonyoung Francis Joung, Sungnam Park, Dohyun Moon, Chang Seop Hong

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

A three-dimensional Cd2+ framework (1) with wide one-dimensional hexagonal channels was prepared based on a tripodal tricarboxylate ligand possessing nitrogen donor atoms. The Cd atoms form a chain structure bridged by carboxylates and aqua ligands. Upon Mg2+ ion capture, the fluorescence emission of this porous material was 5.2 times greater than its Mg2+-free fluorescence. To the best of our knowledge, such enhancement has not been previously reported for metal–organic framework sensory systems. The sensing performance of 1 is reversible over repeated cycles of Mg2+ inclusion and release, revealing the reusability of this material. In the presence of other tested metal ions, Mg2+ ions were selectively detected owing to the operation of this “turn-on” mechanism. Thus, this platform is a promising sensor material for selective Mg2+ ion recognition.

Original languageEnglish
Pages (from-to)330-335
Number of pages6
JournalEuropean Journal of Inorganic Chemistry
Volume2019
Issue number2
DOIs
Publication statusPublished - 2019 Jan 17

Keywords

  • Luminescence
  • Metal-organic frameworks
  • Sensors

ASJC Scopus subject areas

  • Inorganic Chemistry

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