Palladium(II) chloride (PdCl2,
99%), Palladium(II) acetylacetonate (Pd(acac)2, 99%), silver
trifluoroacetate (CF3COOAg, 98%), polyvinylpyrrolidone
(PVP, Mw = 55,000),l -ascorbic
acid (AA, 99%), sodium hydrosulfide hydrate (NaHS·xH2O), and hydrochloric acid (HCl, 37 wt % in water) were
purchased from Sigma-Aldrich. NaOL (>97.0%) was obtained from Tokyo
Chemical Industry. CTAC (99%) was purchased from Acros Organics of
Fisher Scientific. Acetone (≥99.8%) and methanol (≥99.9%)
were obtained from Fisher Scientific. Ethylene glycol (EG, ≥99%)
was purchased from J.T.Baker Chemical (Avantor Performance Materials,
LLC).
The Milli-Q water used in the solutions is ultrapure water
18.2MΩ.cm purified with a Milli-Q Advantage A10 water
purification system from Merck. 10 mM of H2PdCl4 solution was prepared by dissolving 88.65 mg of PdCl2 in 50 mL of 20 mM HCl in a water bath at 60 °C. As Pd(acac)2 is insoluble in water, 10 mM of Pd(acac)2 solution
was freshly prepared by adding 15.23 mg of Pd(acac)2 in
5 mL of Milli-Q water and mixing for several seconds on a vortex followed
by the addition of 10 mL of methanol. The mixture was mixed thoroughly
on the vortex for 5 min and added in the reaction directly to prevent
Pd ions from reduction of methanol. Additionally, CTAC and NaOL aqueous
solutions were stored in a water bath at 40 °C until use.
99%), Palladium(II) acetylacetonate (Pd(acac)2, 99%), silver
trifluoroacetate (CF3COOAg, 98%), polyvinylpyrrolidone
(PVP, Mw = 55,000),
acid (AA, 99%), sodium hydrosulfide hydrate (NaHS·xH2O), and hydrochloric acid (HCl, 37 wt % in water) were
purchased from Sigma-Aldrich. NaOL (>97.0%) was obtained from Tokyo
Chemical Industry. CTAC (99%) was purchased from Acros Organics of
Fisher Scientific. Acetone (≥99.8%) and methanol (≥99.9%)
were obtained from Fisher Scientific. Ethylene glycol (EG, ≥99%)
was purchased from J.T.Baker Chemical (Avantor Performance Materials,
LLC).
The Milli-Q water used in the solutions is ultrapure water
18.2MΩ.cm purified with a Milli-Q Advantage A10 water
purification system from Merck. 10 mM of H2PdCl4 solution was prepared by dissolving 88.65 mg of PdCl2 in 50 mL of 20 mM HCl in a water bath at 60 °C. As Pd(acac)2 is insoluble in water, 10 mM of Pd(acac)2 solution
was freshly prepared by adding 15.23 mg of Pd(acac)2 in
5 mL of Milli-Q water and mixing for several seconds on a vortex followed
by the addition of 10 mL of methanol. The mixture was mixed thoroughly
on the vortex for 5 min and added in the reaction directly to prevent
Pd ions from reduction of methanol. Additionally, CTAC and NaOL aqueous
solutions were stored in a water bath at 40 °C until use.