A selective turn-off fluorescence detection of nitroexplosive 2,4,6-trinitrophenol by pyridinium-based chemosensor in pure aqueous medium

Benzimidazolium ionic liquid tagged phenazine salophen as a bifunctional ‘off–on’ PET based fluorescent sensor for aqueous phase detection of trinitrotoluene and picric acid

“…28 These ILs offer inherent advantages in terms of low cost, largescale production, facile synthetic procedures, high fluorescence efficiency and tuneability, which make them promising watersoluble fluorescent probes for the sensitive detection of explosives in aqueous media. 29,30 Thus, various research groups have developed IL-based fluorescent probes, especially for PA detection in the water medium, [31][32][33][34] wherein the counter anion has been prudently selected to improve its water solubility. Meanwhile, the interaction between the fluorescent probes and nitro compounds could occur in the cationic part of the ILs.…”

Benzimidazoazapurines: Design, Synthesis, and Photophysical Study

“…Annulation of additional conjugated cycles is a perspective strategy to improve the photophysical properties of 8-azapurines. In this way, benzimidazoles appear to be one of the most promising additional structural elements, which have proven themselves as luminophores and fluorescent dyes. − Thus, the design and synthesis of polycyclic fused benzimidazoazapurines can be novel, and a perspective combination of heterocycles leads to the new molecules having photophysical properties.…”

Cellulose-based fluorescent macromolecular sensors and their ability in 2, 4, 6-trinitrophenol detection

“…At the same time, these chemicals are also the main component of explosives and often endanger social security. Therefore, it is necessary to develop and improve rapid real-time monitoring and on-site detection methods for such chemicals (Saini et al 2020). This requires the detector to have the virtue of high sensitivity, good reliability, low detection limit, convenient carrying and easy operation (Xiao et al 2020;Xiong et al 2019).…”