title: Sulfur modification of Au via treatment with Piranha solution provides low-Pd releasing and recyclable Pd material, SAPd.
abstract: We have found in the SR-HXPS measurement of Piranha-treated Au(111)/mica that the gold surface underwent sulfur modification during this treatment, which was believed to have only removed impurities from the gold surface. We also successfully developed a practical Pd material, SAPd, whose Pd was immobilized on sulfur-modified Au. With the lowest Pd-releasing levels and high recyclability, this is one of the best Pd materials thus far developed. Because it leaches extremely low levels of Pd into reaction mixtures, removal of the residual Pd is unnecessary using SAPd, even in syntheses involving pharmaceutical ingredients.
authors.affiliation: Faculty of Pharmaceutical Sciences, Hokkaido University, Kita 12, Nishi 6, Kita-ku, Sapporo 060-0812 Japan.
authors.forename: Naoyuki
authors.initials: N
authors.lastname: Hoshiya
authors.forename: Masahiko
authors.initials: M
authors.lastname: Shimoda
authors.forename: Hideki
authors.initials: H
authors.lastname: Yoshikawa
authors.forename: Yoshiyuki
authors.initials: Y
authors.lastname: Yamashita
authors.forename: Satoshi
authors.initials: S
authors.lastname: Shuto
authors.forename: Mitsuhiro
authors.initials: M
authors.lastname: Arisawa
mesh_terms: D000538:Aluminum Silicates / Q000737:chemistry; D006046:Gold / Q000737:chemistry*; D010165:Palladium / Q000737:chemistry*; D013455:Sulfur / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D000538:Aluminum Silicates; D010165:Palladium; D013455:Sulfur; D006046:Gold; C011934:mica