title: One-step synthesis of collagen hybrid gold nanoparticles and formation on Egyptian-like gold-plated archaeological ivory.
abstract: A one-step method is reported to synthesize hybrid gold nanoparticles (AuNPs) by reduction of HAuCl4 in acetic solution in the presence of collagen (Col), dicarboxylic acid-terminated polyethylene glycol (PEG), and cetyltetrammonium bromide (CTAB) mixed with hydoxyapatite (HAP) as surfactants. Such formation process of AuNPs was shown to be responsible for purple stains naturally formed on Egyptianizing archaeological gilded ivories from 8th BC Syria. The understanding of this formation mechanism, which most likely involves a step with hybrid AuNPs, allows the establishing of an authenticity marker of ancient gold-plated ivories.
authors: Laboratoire de réactivité de surface (LRS), UMR 7197 CNRS, Sorbonne Universités-UPMC University Paris VI, 75005 Paris (France).
authors: Jolanda
authors: J
authors: Spadavecchia
authors: Emilande
authors: E
authors: Apchain
authors: Marie
authors: M
authors: Albéric
authors: Elisabeth
authors: E
authors: Fontan
authors: Ina
authors: I
authors: Reiche
mesh_terms: D003094:Collagen / Q000138:chemical synthesis* / Q000737:chemistry*; D006046:Gold / Q000737:chemistry*; D053758:Nanoparticles
chemical_list: D006046:Gold; D003094:Collagen
keywords: archaeology; collagen; gold; hybrid nanoparticles; ivory