Rapid fluorescence assay for Sudan dyes using polyethyleneimine-coated copper nanoclusters

Copper nanoclusters: designed synthesis, structural diversity, and multiplatform applications

“…2 A). [26][27][28][29][30] When functionalized lipoic acid (LA) attached to a tunable length of polyethylene glycol (PEG) segment was used as a template, the reduction with NaBH4 resulted in the formation of good-quality and highly fluorescent CuNCs (QY of 3.6% in water) with an average size of 2.5 nm. 31 The formed clusters show long-term stability when exposed to daylight and UV irradiation.…”

“…Yu Ling et al prepared PEI-CuNCs as a sensitive and selective fluorescence probe for Sudan I-IV dyes based on the PL quenching of blue emitting clusters (as a consequence of FRET). 27 292 Another foodborne toxin called aflatoxin B1 (AFB1) is produced by fungi and found in food crops, possesses a potential lifethreatening risk upon ingestion of contaminated products. WHO classifies AFB1 as a potent carcinogen which can affect all organ systems.…”

Glutathione-stabilized Cu nanoclusters as fluorescent probes for sensing pH and vitamin B1

“…For example, a polyethyleneimine (PEI)-coated CuNCs was prepared in water solution and further employed for the quantification of Sudan dyes [9]. Moreover, tannic acid capped CuNCs and their application for Hg 2+ sensing was reported [10].…”

Bespoke nanostars: synthetic strategies, tactics, and uses of tailored branched gold nanoparticles

“…The role of Ag(I) in the synthesis of anisotropic gold nanostructures has been investigated since Chang et al showed that the aspect ratio of gold nanorods could be controlled by introducing AgNO 3 into the growth solution. 55,56 While the exact mechanism of Ag(I) role is debated, the addition of silver nitrate to seed-mediated syntheses of branching gold nanoparticles allows for control over spike length, even in the absence of surfactants or templates. 35, 57 58 Initial investigations into Ag(I)-mediated anisotropic growth suggested that a complexation between the Ag(I) and the commonly used capping agent cetyltrimethylammonium bromide (CTAB) ARTICLE Journal Name…”