Synthesis, Structure, and Photoluminescence Properties of a Metal‐Organic Framework with Hexagonal Channels: Selective Turn‐On Sensing for Mg2+ Ion. Issue 2 (11th January 2019)

• Record Type: Journal Article
• Authors: Eom, Sunhwi; Park, Sora; Song, Jeong Hwa; Lee, Woo Ram; Lee, Han Geul; Kang, Dong Won; Joung, Joonyoung Francis; Park, Sungnam; Moon, Dohyun; Hong, Chang Seop
• Is Part Of: European journal of inorganic chemistry. Issue 2(2019)
• Page Start: 330
• Page End: 335
• Publication Date: 2019-01-11
• Subjects: Metal‐organic frameworks -- Luminescence -- Sensors; Chemistry, Inorganic -- Periodicals; Organometallic chemistry -- Periodicals; Bioinorganic chemistry -- Periodicals; Solid state chemistry -- Periodicals; 546
• DOI: 10.1002/ejic.201801291
• Languages: English
• ISSNs: 1434-1948

Abstract

Abstract : A three‐dimensional Cd 2+ 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 Mg 2+ ion capture, the fluorescence emission of this porous material was 5.2 times greater than its Mg 2+ ‐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 Mg 2+ inclusion and release, revealing the reusability of this material. In the presence of other tested metal ions, Mg 2+ ions were selectively detected owing to the operation of this "turn‐on" mechanism. Thus, this platform is a promising sensor material for selective Mg 2+ ion recognition. Abstract : A three‐dimensional Cd II framework with wide one‐dimensional channels exhibits sensitive, selective, reusable "turn‐on" sensing for Mg 2+ over other tested metal ions.