Design of fluorescent sensors based on azaheterocyclic push-pull systems towards nitroaromatic explosives and related compounds: A review. (September 2020)

• Record Type: Journal Article
• Authors: Verbitskiy, Egor V.; Rusinov, Gennady L.; Chupakhin, Oleg N.; Charushin, Valery N.
• Is Part Of: Dyes and pigments. Volume 180(2020)
• Publication Date: 2020-09
• Subjects: Nitroaromatic explosives -- Fluorescence quenching -- Pyridines -- Pyrimidines -- Pyrazines -- Triazines; Dyes and dyeing -- Periodicals; Pigments -- Periodicals; 667.2
• DOI: 10.1016/j.dyepig.2020.108414
• Languages: English
• ISSNs: 0143-7208

Abstract

Abstract: Highly sensitive and selective detection of nitro containing high energy organic compounds such as picric acid (PA), 2, 4, 6-trinitrotoluene (TNT) and 2, 4-dinitrotoluene (DNT) has become a challenging task due to concerns over national security, criminal investigations and environment protections. Among various known detection methods, fluorescence sensors have gained special attention in recent time. The family of fluorescent sensors based on push-pull systems that incorporate nitrogen heterocycles as an electron-withdrawing group have a growing interest due to their high sensitivity, selectivity and easy tuning. The fluorescent sensors discussed in this review are classified and organized according to used azaheterocyclic scaffold, their functionality and their ability to detect of nitroaromatics by fluorescence quenching. Graphical abstract: Image 1 Highlights: Analyze the design of turn-off sensors towards nitroaromatic compound based on azaheterocyclic push-pull fluorophores. Discuss the detection mechanisms of nitroaromatic compounds by fluorescent probes. Provide valuable suggestions on sensor design for the developing trend of high effective sensors towards nitroexplosives.