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

ZUSAMMENFASSUNG

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.

MATERIALIEN

Produktnummer

Marke

Produktbeschreibung

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

Silbernitrat, ACS reagent, ≥99.0%

493546

Sigma-Aldrich

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

452882

Sigma-Aldrich

Natriumborhydrid, powder, ≥98.0%

H5882

Sigma-Aldrich

Hexadecyltrimethylammoniumbromid, ≥98%

S6506

Sigma-Aldrich

Silbernitrat, ReagentPlus^®, ≥99.0% (titration)

213462

Sigma-Aldrich

Natriumborhydrid, ReagentPlus^®, 99%

H6269

Sigma-Aldrich

Hexadecyltrimethylammoniumbromid, for molecular biology, ≥99%

02870

Sigma-Aldrich

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

02856

Sigma-Aldrich

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

204390

Sigma-Aldrich

Silbernitrat, 99.9999% trace metals basis

H9151

Sigma-Aldrich

Hexadecyltrimethylammoniumbromid, BioXtra, ≥99%

31630

Sigma-Aldrich

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

480886

Sigma-Aldrich

Natriumborhydrid, granular, 99.99% trace metals basis

71320

Sigma-Aldrich

Natriumborhydrid, purum p.a., ≥96% (gas-volumetric)

52365

Sigma-Aldrich

Hexadecyltrimethylammoniumbromid, BioUltra, for molecular biology, ≥99.0% (AT)

85228

Sigma-Aldrich

Silbernitrat, puriss. p.a., ≥99.5% (AT)

10220

Sigma-Aldrich

Silbernitrat, 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

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

85193

Sigma-Aldrich

Silbernitrat -Lösung, 2.5 % (w/v) AgNO₃ in H₂O

S7276

Sigma-Aldrich

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

452904

Sigma-Aldrich

Natriumborhydrid -Lösung, ~12 wt. % in 14 M NaOH

452874

Sigma-Aldrich

Natriumborhydrid, granular, 10-40 mesh, 98%

248762

Sigma-Aldrich

Silbernitrat auf Kieselgel, extent of labeling: ~10 wt. % loading, +230 mesh

02882

Sigma-Aldrich

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

792276

Sigma-Aldrich

Silbernitrat, anhydrous, ≥99.999% trace metals basis

51976

Sigma-Aldrich

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

02890

Sigma-Aldrich

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