Electropositive far-ultraviolet carbon nanoparticles-based photoluminescent photoinduced-electron transfer sensor for sodium dodecyl sulfate and sodium lauryl sulfonate detection

Selective identification of p-nitroaniline by bromine-mediated polarization of carbon dots

“…1L) reveals graphitic N/sp 2 C–N bonding at 399.8 eV, amine N at 400.8 eV, and oxidized N at 402.3 eV, respectively. 45 No new chemical bonds were found except for a certain increase in nitrogen content (Table S1†), indicating that PNA might only be physically adsorbed onto the surface of the BBCNs. It was further confirmed by the FT-IR spectra of PNA, BBCNs and the BBCN/PNA complex (Fig.…”

An eco-friendly fluorometric assay for high-sensitive meloxicam quantitation in biological matrices

“…Generally, the HOMO–LUMO energy level was measured using the following eqs. 25 E HOMO = −[21.22 − ( E cutoff − E onset )] eV E LUMO = [ E HOMO + E g ] eVwhere the E onset and E cutoff are the positions of the rising and disappearing energy counts within the UPS spectrum, respectively. The UV-vis absorption edge is defined as E g .…”

“…16–18 Owing to their lower toxicity, good biocompatibility, and high photostability, we have designed and prepared many CNMs with different physicochemical properties to detect a variety of analytes. 19–25 Inspired by the lack of low toxicity or even non-toxic Mel probes, herein, we develop a simple and eco-friendly synthetic approach toward water-soluble luminescent nano-carbon dots (nano-Cdots) by a one-pot eco-friendly hydrothermal process involving carbon–nitrogen precursors. The entire synthesis process does not involve any toxic reagents.…”

Nanomaterial-based probes for iodide sensing: synthesis strategies, applications, challenges, and solutions

“…Typically, this is performed using spectroscopic techniques such as fluorescence or absorbance spectroscopy, where a relationship between the quenching process and iodide concentration can be established via calibration. 35 Hu et al 36 utilized a one-pot hydrothermal method with 5-hydroxytryptamine as the sole precursor to synthesize innovative far-ultraviolet emission carbon nanoparticles (FCNPs). The procedure is quick and straightforward and requires no additional hazardous chemicals or solvents.…”