Highly fluorescent Ag nanoclusters: microwave-assisted green synthesis and Cr3+ sensing

Abstract

Highly fluorescent Ag nanoclusters were prepared in aqueous solution via a rapid microwave-assisted green approach and used as a novel fluorescence probe for the determination of Cr(3+) ions with high sensitivity and excellent selectivity.

Microwave-assisted ultrafast synthesis of silver nanoparticles for detection of Hg2+

“…Furthermore, microwave irradiation offers homogeneous heating in the solution and thus provides uniform nucleation, rendering monodispersed nanoparticles [13][14][15].…”

Facile Preparation of 2,6‐Pyridinedicarb­oxylic Acid Protected Gold Nanoparticles with Sensitive Chromium‐Ion Sensing and Efficient Catalysis

“…Therefore, new sensitive and selective probes for the sensing of Cr 3+ and Cr 6+ ions are urgently demanded. [38][39][40] Herein, we report the preparation of 2,6-pyridinedicarboxylic acid functionalized gold nanoparticles (PDCA-AuNPs) under optimized condition, and they can detect Cr 3+ ions in water samples with good sensitivity and selectivity. As Cr 6+ ions can be readily reduced to Cr 3+ ions by a gentle reducing agent, [25,26] to detect Cr 6+ ions in water samples, the Cr 6+ species were first reduced to Cr 3+ species and then the detection could be performed through the colorimetric response of the PDCA-AuNPs.…”

Fluorescent nanoparticles for chemical and biological sensing

“…In principle, competitive binding of the ligands between the analytes and the QDs would alter the luminescence of NPs, suggesting a feasible route to developing sensing constructs. Recently, a lot of metal ions sensors for Pb 2+ [75], Cu 2+ [76,77], Hg 2+ [78], Ag + [79], Cr 3+ [80], etc., have been developed based on the thios-ligand competition-induced fluorescence quenching.…”