Solvent directed selective and sensitive fluorescence detection of target ions using a coumarin–pyridine probe. Issue 22 (15th October 2018)

• Record Type: Journal Article
• Authors: Xie, Yiting; Cheng, Wenjing; Jin, Bing; Liang, Chaogen; Ding, Yubin; Zhang, Weihua
• Is Part Of: Analyst. Volume 143:Issue 22(2018)
• Page Start: 5583
• Page End: 5588
• Publication Date: 2018-10-15
• Subjects: Chemistry, Analytic -- Periodicals; 543
• DOI: 10.1039/c8an01736k
• Languages: English
• ISSNs: 0003-2654

Abstract

Abstract : The solvatochromic properties of a coumarin–pyridine probe were utilized as a cheap and effective way for designing fluorescent probes for Mg 2+ and PPi with high selectivity and nanomolar level sensitivity. Abstract : The development of fluorescent probes to selectively and sensitively detect more than one target analyte under a given condition is a challenging task due to the lack of designing strategies. In this paper, we report the utilisation of the solvatochromic properties of a coumarin–pyridine based probeL1 to detect Mg 2+ and PPi, respectively, by using different solvents such as acetonitrile, DMF and DMF–HEPES buffered solutions. When acetonitrile was used as the solvent, L1 was weakly fluorescent and showed a selective and sensitive fluorescence "turn on" response towards Mg 2+ with a detection limit of 86 nM, while in DMF and DMF–HEPES buffered solutions, L1 was brightly fluorescent and was able to form a non-fluorescentL1-Fe 3+ complex. The obtainedL1-Fe 3+ complex was further determined to be a selective and sensitive fluorescent "turn on" probe for PPi with a detection limit of 94 nM.