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Gold(III) Ions Sorption on Amberlite XAD-16 Impregnated with TBP After Leaching Smart Card Chips.
Molecules
January 2025
Department of Inorganic Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Skłodowska University, Maria Curie-Skłodowska Sq. 2, 20-031 Lublin, Poland.
Owing to the intensive development of electrical and electronic equipment, there is an increasing demand for precious metals, which are often used for its production. Due to their scarce supply, it is important to recover them from secondary sources. A promising way to recover precious metals are impregnated resins.
View Article and Find Full Text PDFStoichiometry effect on the structure, coordination and anticancer activity of gold(I/III) bisphosphine complexes.
Dalton Trans
December 2024
Department of Chemistry, University of Kentucky, Lexington, KY 40506, USA.
Rationalizing the impact of oxidation states of Au-based complexes on function require synthetic strategies that allow for conserved molecular formula in Au(I) and their Au(III) counterparts. Oftentimes achieving Au(I) and Au(III) coordination complexes with the same ligand system is challenging due to the reactivity and stability of the starting Au(I) or Au(III) starting materials. Thus, attempts to study the impact of oxidation state on biological function has been elusive.
View Article and Find Full Text PDFA simple and highly sensitive colorimetric assay for the visual detection of lead and chromium using ascorbic acid capped gold nanoparticles.
Anal Methods
December 2024
Department of Chemistry, State University of New York, Potsdam, NY 13676, USA.
Lead (Pb) and hexavalent chromium (Cr) are highly toxic pollutants with no safe exposure levels, posing significant health risks globally, especially in developing countries. Current detection methods for these metals are often complex and inaccessible, highlighting the urgent need for innovative approaches. In this study, we present a rapid, cost-effective colorimetric assay utilizing ascorbic acid-capped gold nanoparticles (AuNPs) for the selective detection of Pb and Cr ions at levels recommended by regulatory bodies such as the WHO and EPA.
View Article and Find Full Text PDFSynthesis and assessment of gold nanoparticles conjugated with extracts, sterols and pure compounds derived from marine sponges from the Indian and Pacific Oceans.
RSC Adv
November 2024
Biomaterials, Drug Delivery & Nanotechnology Unit, Centre for Biomedical & Biomaterials Research (CBBR), University of Mauritius Réduit 80837 Mauritius
Gold nanoparticles (AuNPs) exhibit different physical properties compared to small molecules, bulk materials and other nanoparticles. Their synthesis using plant extracts, particularly polyflavonoids as phytoreductants, for the conversion of Au(iii) into Au(0) has been reported. In this study, AuNPs were synthesized with extracts, sterols and pure compounds derived from marine sponges using gold(iii) chloride trihydrate.
View Article and Find Full Text PDFGold(III) complexes with chloride and cyanopyridines: Facilitated hydrolysis of nitrile ligand to amide and antibacterial activity.
Spectrochim Acta A Mol Biomol Spectrosc
January 2025
Department of Inorganic Chemistry, Faculty of Chemistry, Gdańsk University of Technology, Narutowicza St, 11/12, 80-233 Gdańsk, Poland. Electronic address:
A range of novel simple gold(III) compounds has been synthesized in their monocrystalline form, including two previously unknown chloro-complexes of Au with 2-cyanopyridine or 3-cyanopyridine, respectively. Our investigations have revealed the intricate nature of the reaction between 2-cyanopyridine and tetrachloroauric acid, yielding at least three distinct products. The main product, obtained in high yield, is a salt featuring a tetrachloroauric anion and a pyridinium cation stabilized by a hydrogen bond to a further 2-cyanopyridine molecule.
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