Luminescent Lanthanide Complex Sensor for Acac and Cd2+. (21st December 2020)

• Record Type: Journal Article
• Authors: Chen, Zhao; Cai, Yujia; Ma, Yuanjie; Huang, Lei; Zhao, Yongli; Wang, Lei
• Is Part Of: Photochemistry and photobiology. Volume 97:Number 4(2021)
• Page Start: 664
• Page End: 671
• Publication Date: 2020-12-21
• Subjects: Photochemistry -- Periodicals; Light -- Physiological effect -- Periodicals; 541.35
• DOI: 10.1111/php.13366
• Languages: English
• ISSNs: 0031-8655

Abstract

Abstract: In this work, phenylmalonic acid (H2 pmal) and phenanthroline (phen) are selected to react with Ln(NO3 )3 ·6H2 O (Ln = Tb, Eu) to form two lanthanide coordination complex [Ln2 (PAA)4 (phen)2 (NO3 )2 ] (Ln = Tb, Tb complex; Eu, Eu complex), PAA = deprotonated phenylacetic acid, phen = 1, 10‐phenanthroline). Two lanthanide complexes are stable in neutral, acid (pH = 4) and base (pH = 10) water solutions. Especially, Tb complex is a bifunctional sensor for acac and Cd 2+, through luminescence "turn on" and "turn off, " respectively. Importantly, the limit of detections (LODs) for acac and Cd 2+ are 90 nm and 0.5 μm, respectively. Furthermore, the sensing mechanisms are discussed in detail. Abstract : A new lanthanide complex of Tb complex is obtained, it is a bifunctional fluorescence sensor for acac and Cd 2+, through luminescence "turn on" and "turn off, " with sensitive LOD values of 90 nmol L −1 and 0.5 μmol L −1, respectively.