title: Synthesis and optical property characterization of elongated AuPt and Pt@Au metal nanoframes.
abstract: We report a facile method to synthesize elongated nanoframes consisting of Pt and Au in solution. Pentagonal Au nanorods served as templates and successfully led to an elongated AuPt nanoframe after etching the core Au. Subsequently, the coating of Au around Pt ridges resulted in Pt@Au metal nanoframes. The resulting elongated nanostructure exhibited 5 well-defined ridges continuously connected along the long axis. During the shape evolution from pure Au nanorods to elongated Pt@Au metal nanoframes, their corresponding localized surface plasmon resonance bands were monitored. Especially, unique surface plasmon features were observed for elongated Pt@Au nanoframes where the short-axis oscillation of surface free electrons is strongly coupled but the long-axis oscillation is not coupled among the ridges.
authors: Department of Chemistry, Sungkyunkwan University, Suwon 440-746, South Korea. spark72@skku.edu.
authors: Sangji
authors: S
authors: Lee
authors: Department of Chemistry, Sungkyunkwan University, Suwon 440-746, South Korea. spark72@skku.edu.
authors: Hee-Jeong
authors: HJ
authors: Jang
authors: Department of Energy Science, Sungkyunkwan University, Suwon 440-746, South Korea.
authors: Ho Young
authors: HY
authors: Jang
authors: Department of Chemistry, Sungkyunkwan University, Suwon 440-746, South Korea. spark72@skku.edu.
authors: Soonchang
authors: S
authors: Hong
authors: Anti-aging Research Institute of BIO-FD & C Co. Ltd, Incheon 406-840, Korea.
authors: Sang Hyun
authors: SH
authors: Moh
authors: Department of Chemistry, Sungkyunkwan University, Suwon 440-746, South Korea. spark72@skku.edu.
authors: Sungho
authors: S
authors: Park