A reusable fluorescence Eu-based coordination polymer for the detection of Zr4+ ions in aqueous media. (12th October 2022)

• Record Type: Journal Article
• Authors: Chen, Mingyu; Wang, Ming; Liu, Cheng; Yang, Tao; Zhou, Xinhui; You, Yujian
• Is Part Of: New journal of chemistry. Volume 46:Number 41(2022)
• Page Start: 19991
• Page End: 19996
• Publication Date: 2022-10-12
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/d2nj03658d
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : A fluorescence coordination polymer [Eu(L)1.5 (phen)(H2 O)] (1, H2 L = 9, 10-anthracenedicarboxylic acid) was prepared. 1 represents a fluorescence turn-off sensing material for Zr 4+ ions with an excellent detection performance. Abstract : A fluorescence 3D coordination polymer (CP) [Eu(L)1.5 (phen)(H2 O)] (1, H2 L = 9, 10-anthracenedicarboxylic acid and phen = 1, 10 phenanthroline) was prepared using a solvothermal method. The fluorescence sensing experiments showed that among the 12 selected metal ions, only Zr 4+ ions significantly suppressed the luminescence emission intensities of 1 dispersed in aqueous media. The emission intensities of 1 and the concentrations of Zr 4+ ions could be fitted well ( R 2 = 0.99801) using the linear Stern–Volmer equation over a concentration range of 0–15 μM with a K SV value of 53 830 M −1, and subsequently a low limit of detection of 0.167 μM and a limit of quantification of 0.501 μM were obtained. We also confirmed its reusable sensing performance for Zr 4+ ions. The fluorescence response of 1 to Zr 4+ ions hardly changed for at least 4 cycles of the sensing test. Although, according to the literature, there are organic molecules and CPs used for the detection of Zr 4+ ions, the reusable properties of these fluorescence sensing materials have rarely been reported. Therefore, 1 represents a fluorescence sensing material for Zr 4+ ions with an excellent detection performance (selectivity, sensitivity, anti-interference ability and reusability). The mechanism of fluorescence quenching may be attributed to the static weak interactions between Zr 4+ ions and 1 .