title: Chiral metal nanoparticles encapsulated by a chiral phosphine cavitand with the tetrakis-BINAP moiety: their remarkable stability toward ligand exchange and thermal racemization.
abstract: A chiral phosphine cavitand 1 induced the formation of chiral metal (Ru, Rh, Pd, Ag, Pt, and Au) nanoparticles (NPs). The ligand 1 of the chiral metal NPs prevents both thermal racemization and ligand exchange with a thiol, but the organic molecules can react with the metal surfaces. In contrast to the 1-protected Au NPs, the BINAP-protected Au NPs easily undergo ligand exchange and thermal racemization with aggregation.
authors.affiliation: Department of Applied Chemistry, Kinki University, Kowakae, Higashi-Osaka 577-8502, Japan. h-fuji@apch.kindai.ac.jp.
authors.forename: Ryo
authors.initials: R
authors.lastname: Nishimura
authors.forename: Ryo
authors.initials: R
authors.lastname: Yasutake
authors.forename: Shota
authors.initials: S
authors.lastname: Yamada
authors.forename: Koji
authors.initials: K
authors.lastname: Sawai
authors.forename: Kazuki
authors.initials: K
authors.lastname: Noura
authors.forename: Tsukasa
authors.initials: T
authors.lastname: Nakahodo
authors.forename: Hisashi
authors.initials: H
authors.lastname: Fujihara