Visual sensing of CO2 in air with a 3-position modified naphthalimide-derived organogelator based on a fluoride ion-induced strategy. (January 2019)

• Record Type: Journal Article
• Authors: Zhang, Xin; Song, Yuanyuan; Liu, Meng; Li, Haimiao; Sun, Helue; Sun, Mengmeng; Yu, Haitao
• Is Part Of: Dyes and pigments. Volume 160(2019)
• Page Start: 799
• Page End: 805
• Publication Date: 2019-01
• Subjects: Naphthalimide-derived gelator -- Fluoride ion -- CO2 sensing -- Naked-eye sensing -- Solution-to-gel transition; Dyes and dyeing -- Periodicals; Pigments -- Periodicals; 667.2
• DOI: 10.1016/j.dyepig.2018.09.010
• Languages: English
• ISSNs: 0143-7208

Abstract

Abstract: A new low-molecular-weight organic gelator derived from butyl naphthalimide having a naphthyl group attached at the 3-position with the amido linkage was synthesized. The synthesized gelator could form stable gels in several organic solvents. Scanning electron microscopy (SEM), temperature-dependent 1 H NMR spectra, UV–vis spectroscopy, and PXRD were involved in the characterization of the obtained gels. Furthermore, the solution derived from the stimuli of fluoride ions to the DMSO gel were found to allow a naked-eye sensing of CO2 stream through the solution-to-gel transition, as well as the quantitative analysis via fluorescence enhancement. Moreover, the present sensing system could also detect CO2 directly in air via the phase transformation which could provide a visual means for CO2 sensing in a confined space. Graphical abstract: Image 1 Highlights: A new naphthalimide-based organogelator bearing a naphthyl group at the 3-position is prepared which can form stable gels in some organic solvents. Real-time detection of CO2 stream has been realized with the synthesized gelator based on an anion-induced strategy. The synthesized gelator can provide the visual sensing means for CO2 in air via the solution-to-gel transition by the activation of fluoride anions.