Facile preparation of mesoporous silica coated nitrogen doped carbon dots for sensitive detection of picric acid

Abstract

In this work, the N-CDs@MSN-NH2 was synthesized by facile methods, which had good fluorescence properties and storage stability. The N-CDs@MSN-NH2 has excellent sensitivity and selectivity for PA in aqueous solution through FRET mechanism.

High-fidelity detection of picric acid following proton prompted fluorescence quenching by a novel acridine yellow G-based binuclear ZnII-metallacycle

“…Nitro aromatic compounds (NACs) are extremely important owing to their significant use in the modern manufacturing industry related to military applications, 1 polymers 2,3 and pesticides, 4 pharmaceuticals, 5 dyes, 6 leather, 7 sensitizers, 8,9 photographic emulsions, rocket fuel, 10 and forensic/criminal investigations. 11 Many NACs are also important constituents of explosives, fireworks, 12 matches, 13 glass and deadly weapons, among which picric acid (PA) (2,4,6-trinitrophenol, TNP) has been considered as one of the most exploited, which caused its residual deposition to a dangerous level in land and water.…”

One-Pot Hydrothermal Synthesis of mSiO2-N-CDs with High Solid-State Photoluminescence as a Fluorescent Probe for Detecting Dopamine

“…In addition, it possesses good biocompatibility, high chemical stability, and easy surface functionalization. In recent years, research into the preparation and application of mesoporous silica CDs composite materials has aroused widespread interest among researchers [43][44][45][46]. For example, Liu et al [43] established a fluorescence detection platform for Cr(VI) detection in water by anchoring mesoporous silica nanospheres with B-doped CDs.…”

“…Chang et al [44] obtained a fluorescent composite material (N-CD-SBA-15) with good solid-state fluorescence and excellent stability through simple ultrasonic treatment of a mixture of N-CDs and SBA-15. Wu et al [46] developed a fluorescent sensor based on mesoporous silica-coated N-CDs for sensitive detection of picric acid. However, to our knowledge, there are currently no reports of embedding CDs into mesoporous silica to construct a fluorescent probe for the detection of DA.…”