Department of Chemistry, School of Science, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
J Am Chem Soc. 2014 Jun 18;136(24):8489-91. doi: 10.1021/ja503558c. Epub 2014 Jun 10.
We synthesized and measured optical extinction spectra of Au ultrathin (diameter: ∼1.6 nm) nanowires (UNWs) and nanorods (UNRs) with controlled lengths in the range 20-400 nm. The Au UNWs and UNRs exhibited a broad band in the IR region whose peak position was red-shifted with the length. Polarized extinction spectroscopy for the aligned Au UNWs indicated that the IR band is assigned to the longitudinal mode of the surface plasmon resonance.
我们合成并测量了直径约为 1.6nm 的金超薄膜（UNW）和纳米棒（UNR）的光学消光光谱，其长度控制在 20-400nm 范围内。金 UNW 和 UNR 在红外区域显示出一个宽频带，其峰值位置随长度红移。对定向金 UNW 的偏振消光光谱表明，IR 带归因于表面等离子体共振的纵向模式。
