A simple dihydrophenazine-based chemosensor for the detection of sulfite with turn-on fluorescence. (January 2019)

• Record Type: Journal Article
• Authors: Li, Yiru; Shi, Lijiang; Zhang, Yiyao; Sun, Guangchen; Sun, Lu; Su, Jianhua
• Is Part Of: Dyes and pigments. Volume 160(2019)
• Page Start: 794
• Page End: 798
• Publication Date: 2019-01
• Subjects: Simple -- Dihydrophenazine -- Chemosensor -- Sulfite -- Turn-on fluorescence; Dyes and dyeing -- Periodicals; Pigments -- Periodicals; 667.2
• DOI: 10.1016/j.dyepig.2018.03.020
• Languages: English
• ISSNs: 0143-7208

Abstract

Abstract: A simple novel dihydrophenazine-based chemosensor R has been developed for the detection of SO3 2− in DMSO-H2 O solution with turn-on fluorescence. Upon the addition of sulfite, the ICT (intramolecular charge transfer) system of the probe was destroyed owing to the nucleophilic addition of sulfite to the formyl group of R . Thus a charming orange-red fluorescence centered at 603 nm appeared, which is favorable for potential biosensing. The reaction mechanism was confirmed by MS and 1 H NMR titration. In addition, the detection limit for sulfite was determined as low as 71.4 nM, which is superior to many reported probes. All above results promote the probe as a promising candidate in practical and biological applications. Graphical abstract: Image 1 Highlights: A simple novel dihydrophenazine-based chemosensor R has been synthesized for the detection of SO3 2− . The probe has a charming turn-on orange-red fluorescence centered at 603 nm. The detection limit for sulfite was determined as low as 71.4 nM.