title: Dendrimer-mediated hydrothermal synthesis of ultrathin gold nanowires.
abstract: We report the use of poly(amidoamine) dendrimers as stabilizers to synthesize ultrathin Au nanowires (NWs) with a diameter of 1.3 nm via a hydrothermal approach. The formation of uniform Au NWs was optimized by varying the Au/Ag salt molar ratio, dendrimer stabilizers, and reaction solvent, temperature, and time. A novel growth mechanism involving a synergic facet-dependent deposition/reduction of Ag(I) and oriented migration of Au atoms is proposed based on density functional theory calculations and the experimental results. This work can significantly expand the scope of dendrimers as stabilizers to generate metal NWs in aqueous solution that may be further functionalized for different applications.
authors.affiliation: 1] State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, People's Republic of China [2] College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People's Republic of China.
authors.forename: Hui
authors.initials: H
authors.lastname: Liu
authors.forename: Xiaoming
authors.initials: X
authors.lastname: Cao
authors.forename: Jianmao
authors.initials: J
authors.lastname: Yang
authors.forename: Xue-Qing
authors.initials: XQ
authors.lastname: Gong
authors.forename: Xiangyang
authors.initials: X
authors.lastname: Shi