Design of an antenna effect Eu(iii)-based metal–organic framework for highly selective sensing of Fe3+. Issue 7 (1st February 2022)

• Record Type: Journal Article
• Authors: Wu, Jia-Qi; Ma, Xin-Yue; Liang, Cheng-Long; Lu, Jian-Mei; Shi, Qian; Shao, Li-Xiong
• Is Part Of: Dalton transactions. Volume 51:Issue 7(2022)
• Page Start: 2890
• Page End: 2897
• Publication Date: 2022-02-01
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/d1dt03995d
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : Highly selective sensing of Fe 3+ is very important due to its great effect on biological systems. Abstract : Highly selective sensing of Fe 3+ is very important due to its great effect on biological systems. A novel ligand [1, 1′:4′, 1′′:4′′, 1′′′:4′′′, 1′′′′-quinquephenyl]-2, 2′′, 2′′′′, 5′′-tetracarboxylic acid (H4 qptca) was designed and successfully obtained for the first time via three steps in high total yields according to the absorption spectrum of Fe 3+ . The europium(iii )-based metal–organic framework derived from H4 qptca, {[Eu(qptca)1/2 (H2 qptca)1/2 (H2 O)2 ]·DMF} n (referred to as SLX-1), was then synthesized and used as a water-stable and highly selective luminescent sensor for Fe 3+ in aqueous solution with a comparable detection limit using Ln-MOF probes (6.45 μM) through the antenna effect of SLX-1. Furthermore, the luminescence quenching mechanism was also proposed as a competitive absorption mechanism.