"Turn-on" far-red fluorescence sensor for Y3+ based on Schiff-based tetraphenylethylene. (December 2020)

• Record Type: Journal Article
• Authors: Jiang, Shengjie; Chen, Shibing; Guo, Hongyu; Yang, Fafu
• Is Part Of: Dyes and pigments. Volume 183(2020)
• Publication Date: 2020-12
• Subjects: Far-red -- Turn-on -- Fluorescence -- Sensor -- Y3+ -- Tetraphenylethylene; Dyes and dyeing -- Periodicals; Pigments -- Periodicals; 667.2
• DOI: 10.1016/j.dyepig.2020.108717
• Languages: English
• ISSNs: 0143-7208

Abstract

Abstract: Far-red and "turn-on" fluorescence sensors were paid much attention due to their outstanding merits, but this kind of fluorescence probe for Y 3+ was not presented up to date. In this work, a Schiff-base bridged m -aminobenzoic acid-decorating tetraphenylethylene was designed and synthesized in yield of 89%. It exhibited the far-red fluorescence at 550–670 nm in aqueous media based on AIE effect. It showed high selective sensing ability for Y 3+ among all kinds of metal ions with the obvious "turn-on" fluorescence, which was observed for the first time for fluorescence sensor of Y 3+ . The detection limit for Y 3+ was as low as 2.23 × 10 −7 M. The sensor mechanism of 1:1 stoichiometric ratio was clarified by fluorescence titration, FT-IR spectra, 1 H NMR and MS spectra. The selective sensing of Y 3+ was further successfully applied on detecting Y 3+ for tested paper, simulated water sample and bio-imaging of live cells, suggesting the good practical application potential of this fluorescence sensor on detecting Y 3+ in complicated water media and living body environment. Highlights: First "turn-on" fluorescence sensor for Y 3+ in water media was presented. The high selective sensing ability for Y 3+ among various metal ions was observed. The detection limit for Y 3+ was as low as 2.23 × 10 −7 M. The Y 3+ sensor was applied for tested paper, simulated water sample and bio-imaging. The sensor mechanism of 1:1 stoichiometric ratio was clarified.