One-step synthesis of collagen hybrid gold nanoparticles and formation on Egyptian-like gold-plated archaeological ivory.

One-step synthesis of collagen hybrid gold nanoparticles and formation on Egyptian-like gold-plated archaeological ivory.

Angewandte Chemie (International ed. in English) (2014-06-27)

Jolanda Spadavecchia, Emilande Apchain, Marie Albéric, Elisabeth Fontan, Ina Reiche

RESUMO

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.

MATERIAIS

Número do produto

Marca

Descrição do produto

E7023

Sigma-Aldrich

Álcool etílico, puro, 200 proof, for molecular biology

459844

Sigma-Aldrich

Álcool etílico, puro, 200 proof, ACS reagent, ≥99.5%

209139

Sigma-Aldrich

Nitrato de prata, ACS reagent, ≥99.0%

459828

Sigma-Aldrich

Álcool etílico, puro, 200 proof, HPLC/spectrophotometric grade

493546

Sigma-Aldrich

Álcool etílico, puro, 200 proof, meets USP testing specifications

452882

Sigma-Aldrich

Borohidreto de sódio, powder, ≥98.0%

H5882

Sigma-Aldrich

Brometo de hexadeciltrimetilamônio, ≥98%

E7148

Sigma-Aldrich

Álcool etílico, puro, 190 proof, for molecular biology

S6506

Sigma-Aldrich

Nitrato de prata, ReagentPlus^®, ≥99.0% (titration)

213462

Sigma-Aldrich

Borohidreto de sódio, ReagentPlus^®, 99%

H6269

Sigma-Aldrich

Brometo de hexadeciltrimetilamônio, for molecular biology, ≥99%

02870

Sigma-Aldrich

Etanol, ACS reagent, prima fine spirit, without additive, F15 o¹

02856

Sigma-Aldrich

Etanol, purum, absolute ethanol, denaturated with 4.8% isopropanol, A15 IPA¹, ≥99.8% (based on denaturant-free substance)

204390

Sigma-Aldrich

Nitrato de prata, 99.9999% trace metals basis

H9151

Sigma-Aldrich

Brometo de hexadeciltrimetilamônio, BioXtra, ≥99%

31630

Sigma-Aldrich

Nitrato de prata, puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥99.8%

480886

Sigma-Aldrich

Borohidreto de sódio, granular, 99.99% trace metals basis

71320

Sigma-Aldrich

Borohidreto de sódio, purum p.a., ≥96% (gas-volumetric)

52365

Sigma-Aldrich

Brometo de hexadeciltrimetilamônio, BioUltra, for molecular biology, ≥99.0% (AT)

85228

Sigma-Aldrich

Nitrato de prata, puriss. p.a., ≥99.5% (AT)

10220

Sigma-Aldrich

Nitrato de prata, meets analytical specification of Ph. Eur., BP, USP, 99.8-100.5%

493511

Sigma-Aldrich

Álcool etílico, puro, 190 proof, ACS spectrophotometric grade, 95.0%

02857

Sigma-Aldrich

Etanol, purum, fine spirit, denaturated with 4.8% methanol, F25 METHYL¹, ~96% (based on denaturant-free substance)

85193

Sigma-Aldrich

Nitrato de prata, 2.5 % (w/v) AgNO₃ in H₂O

459836

Sigma-Aldrich

Álcool etílico, puro, 200 proof, anhydrous, ≥99.5%

S7276

Sigma-Aldrich

Nitrato de prata, BioReagent, suitable for plant cell culture, >99% (titration)

48075

Supelco

Ethanol solution, certified reference material, 2000 μg/mL in methanol

452904

Sigma-Aldrich

Sodium borohydride solution, ~12 wt. % in 14 M NaOH

452874

Sigma-Aldrich

Borohidreto de sódio, granular, 10-40 mesh, 98%

248762

Sigma-Aldrich

Silver nitrate on silica gel, extent of labeling: ~10 wt. % loading, +230 mesh