Ratiometric chemosensor for differentiation of TNP from other NACs using distinct blue fluorescence and visualization of latent fingerprints

Abstract

Paper strips coated with the red-fluorescent probe DMAS-TP display a distinct blue fluorescence with 2,4,6-trinitrophenol and SiO2@DMAS-TP NPs to visualize latent fingerprints up to level 3.

Significant energy gap modulation of sulfone-substituted benzosiloles: enhanced brightness and electron affinity for chemical vapor sensing, fingerprint detection and live-cell imaging

“…Nevertheless, when luminogens are on a solid surface, the fluorescence efficiency is increased by separating the dye from extrinsic perturbations such as SiO 2 particles, hydrogels, and diatomite. 69,70 Herein, the synthesized luminogens were doped into triglycerol monostearate (TG-18) hydrogel 71 (4 wt‰ of doping ratio) (Fig. S39, ESI†) and pre-processed diatomite (0.1 wt‰ of doping ratio).…”

Design strategies and applications of novel functionalized phenazine derivatives: a review

“…Notably, N , N -dihydrophenazine could be used as a sensing material to capture and distinguish ions and or biomacromolecules. 96–109 Using the same functionalized strategy, Tian and co-workers 110 developed a supramolecular system based on bis-calix[4]pyrrole modified dihydrophenazine derivative 16 , which could detect dicarboxylate anions. Scheme 6 showed its synthetic route.…”

Protonation- and electrostatic-interaction-based fluorescence probes for the selective detection of picric acid (2,4,6-trinitrophenol) – an explosive material

“…Tripod 119 115 (chart 14), on addition of water in its DMSO solution displayed aggregation based fluorescence quenching with blue shift in emission maxima from 635 nm to 615 nm, pointing to formation of H aggregates. These aggregates with picric acid revealed simultaneous fluorescence lowering at 615 nm and an increase in fluorescence intensity between 510-540 nm, leading to ratiometric behaviour for picric acid.…”

“…In another case, BODIPY probe 25 52 displayed 300-fold enhancement in emission intensity with PA in ethanol. Another ICT based probe 119 115 showed distinct appearance of blue fluorescence on treatment of probe coated paper-strips with picric acid. In all these examples, the picric acid mediated protonation at amine nitrogen is the key mechanistic feature.…”