One‐Step Synthesis of Collagen Hybrid Gold Nanoparticles and Formation on Egyptian‐like Gold‐Plated Archaeological Ivory |
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| Authors: | Dr. Jolanda Spadavecchia Emilande Apchain Marie Albéric Elisabeth Fontan Dr. Ina Reiche |
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| Affiliation: | 1. Laboratoire de réactivité de surface (LRS), UMR 7197 CNRS, Sorbonne Universités—UPMC University Paris VI, 75005 Paris (France);2. Laboratoire d'Archéologie Moléculaire et Structurale (LAMS), UMR 8220 CNRS, Sorbonne Universités—UPMC University Paris VI, 75005 Paris (France) http://www.umr‐lams.fr/spip.php?article35;3. Département des Antiquités Orientales, Musée du Louvre, 75001 Paris (France);4. Present address: Rathgen Research Laboratory—National Museums in Berlin—Prussian Cultural Heritage Foundation, 14059 Berlin (Germany) |
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| 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. |
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| Keywords: | archaeology collagen gold hybrid nanoparticles ivory |
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