About this Abstract |
Meeting |
MS&T24: Materials Science & Technology
|
Symposium
|
Controlled Synthesis, Processing, and Applications of Structural and Functional Nanomaterials
|
Presentation Title |
Dual-Plasmonic Hetero-Nanostructures with Optimized Properties |
Author(s) |
Hao Jing |
On-Site Speaker (Planned) |
Hao Jing |
Abstract Scope |
The extension of plasmonics to materials beyond the conventional noble metals opens up a novel and exciting regime after the inspiring discovery of characteristic localized surface plasmon resonances (LSPRs) in doped semiconductor nanocrystals originating from the collective oscillations of free holes in the valence band. We herein prepare colloidal monodisperse eccentric dual plasmonic noble metal-nonstoichiometric copper chalcogenide (Au@Cu2-xSe) hybrid hetero-nanostructures with precisely controlled semiconductor shell size and two tunable LSPRs in both visible (VIS) and near-infrared (NIR) regions associated with Au and Cu2-xSe, respectively. The LSPR bands of gold and copper selenide have been super positioned in NIR region, resulting in superior photocatalytic properties of the nanostructures. The new physical and chemical insights gained from this work provide the keystone for the rational design and construction of high-quality dual- or even multi-plasmonic nano-systems with optimized properties for widespread applications ranging from photocatalysis to molecular spectroscopies. |