Hydrogentetrachloroaurate 3 hydrate haucl4

The
integrin α_vβ₃ targeting peptide
cyclo (Arg-Gly-Asp-d-Phe-Cys)
(cRGDfC) was purchased from Peptides International, Inc. (Louisville,
KY). The p-SCN-Bn-NOTA was purchased from Macrocyclics, Inc. Hydrogen
tetrachloroaurate(III) hydrate (HAuCl₄) and platinum(II)
acetylacetonate (Pt(acac)₂) was ordered from Strem Chemicals,
Inc. N-Hydroxysuccinimide (NHS), N-hydroxysulfosuccinimide (sulfo-NHS), succinimidyl 4-(N-maleimidomethyl) cyclohexane-1-carboxylate (sulfo-SMCC), and 1-ethyl-3-(3-dimethylaminopropyl)
carbodiimide, hydrochloride (EDC) were purchased from Thermo Fisher
Scientific. All other chemicals were purchased from Sigma-Aldrich.
Other solvents and chemicals were used as received. All buffers and
media were purchased from Invitrogen Corp. Deionized water was obtained
from a Millipore Milli-DI Water Purification system. The dialysis
membrane tubing (MWCO: 12,000–14,000, and 100,000) were purchased
from Spectrum laboratories.

Iron(III) nitrate nonahydrate
(Fe(NO₃)₃·9H₂O) and EG (HOCH₂CH₂OH, 99+%) (Acros Organics), hydrogen tetrachloroaurate(III)
hydrate (HAuCl₄, 99.9%-Au, Strem Chemicals), sodium hydroxide
(Ward’s Science) were used as received without further purification.
Deionized water with resistivity > 18 MΩ·cm was used
for
solution preparation. Titanium (0.05 cm thick, Colorado Concept Coatings)
and FTO (15–20 Ω·cm^–1, Pilkington,
Toledo, OH) in 1 in × 1 in were used for both SECM studies and
preparing thin-film photoanodes for PEC measurements.