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

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.

MATERIALI

N° Catalogo

Marchio

Descrizione del prodotto

E7023

Sigma-Aldrich

Ethyl alcohol, Pure, 200 proof, for molecular biology

459844

Sigma-Aldrich

Ethyl alcohol, Pure, 200 proof, ACS reagent, ≥99.5%

209139

Sigma-Aldrich

Argento nitrato, ACS reagent, ≥99.0%

493546

Sigma-Aldrich

Ethyl alcohol, Pure, 200 proof, meets USP testing specifications

452882

Sigma-Aldrich

Boroidruro di sodio, powder, ≥98.0%

H5882

Sigma-Aldrich

Esadeciltrimetilammonio bromuro, ≥98%

S6506

Sigma-Aldrich

Argento nitrato, ReagentPlus^®, ≥99.0% (titration)

213462

Sigma-Aldrich

Boroidruro di sodio, ReagentPlus^®, 99%

H6269

Sigma-Aldrich

Esadeciltrimetilammonio bromuro, for molecular biology, ≥99%

02870

Sigma-Aldrich

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

02856

Sigma-Aldrich

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

204390

Sigma-Aldrich

Argento nitrato, 99.9999% trace metals basis

H9151

Sigma-Aldrich

Esadeciltrimetilammonio bromuro, BioXtra, ≥99%

31630

Sigma-Aldrich

Argento nitrato, puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥99.8%

480886

Sigma-Aldrich

Boroidruro di sodio, granular, 99.99% trace metals basis

71320

Sigma-Aldrich

Boroidruro di sodio, purum p.a., ≥96% (gas-volumetric)

52365

Sigma-Aldrich

Esadeciltrimetilammonio bromuro, BioUltra, for molecular biology, ≥99.0% (AT)

85228

Sigma-Aldrich

Argento nitrato, puriss. p.a., ≥99.5% (AT)

10220

Sigma-Aldrich

Argento nitrato, meets analytical specification of Ph. Eur., BP, USP, 99.8-100.5%

493511

Sigma-Aldrich

Ethyl alcohol, Pure, 190 proof, ACS spectrophotometric grade, 95.0%

02857

Sigma-Aldrich

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

85193

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Argento nitrato, 2.5 % (w/v) AgNO₃ in H₂O

S7276

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Argento nitrato, BioReagent, suitable for plant cell culture, >99% (titration)

452904

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

452874

Sigma-Aldrich

Boroidruro di sodio, granular, 10-40 mesh, 98%

248762

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

02882

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Etanolo, purum, absolute ethanol, denaturated with 2% 2-butanone, A15 MEK¹, ≥99.8% (based on denaturant-free substance)

792276

Sigma-Aldrich

Argento nitrato, anhydrous, ≥99.999% trace metals basis

51976

Sigma-Aldrich

Etanolo, BioUltra, for molecular biology, ≥99.8%, (absolute alcohol, without additive, A15 o¹)

02890

Sigma-Aldrich

Etanolo, purum, fine spirit, denaturated with 2% 2-butanone, F25 MEK¹, ~96% (based on denaturant-free substance)