Electronic properties of metal nanorods probed by surface-enhanced Raman spectroscopy

被引:26
作者
Yao, JL
Xu, X
Wu, DY
Xie, Y
Ren, B
Tian, ZQ [1 ]
Pan, GP
Sun, DM
Xue, KH
机构
[1] Xiamen Univ, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China
[2] Xiamen Univ, Inst Phys Chem, Xiamen 361005, Peoples R China
[3] Nanjing Normal Univ, Dept Chem, Nanjing 210097, Peoples R China
关键词
D O I
10.1039/b002717k
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Applying the probe molecule strategy, surface-enhanced Raman spectroscopy has been used, for the first time, as a diagnostic tool of the electronic properties of metal nanorods; the vibrational frequency of the probe molecule SCN- at Cu nanorods is shown to critically depend on the nanorod's diameter in the range from 50 to 15 nm; the up-shifting of the Fermi level with a decrease of the nanorod's diameter is interpreted based on the change of cohesive energy owing to the high ratio of surface to bulk atoms.
引用
收藏
页码:1627 / 1628
页数:2
相关论文
共 15 条
[1]   Visible region polarization spectroscopic studies of template-synthesized gold nanoparticles oriented in polyethylene [J].
Al-Rawashdeh, NAF ;
Sandrock, ML ;
Seugling, CJ ;
Foss, CA .
JOURNAL OF PHYSICAL CHEMISTRY B, 1998, 102 (02) :361-371
[2]  
[Anonymous], UNPUB
[3]   INFRARED-SPECTROSCOPY AS AN INSITU PROBE OF MORPHOLOGY [J].
BROWNE, VM ;
FOX, SG ;
HOLLINS, P .
CATALYSIS TODAY, 1991, 9 (1-2) :1-14
[4]   RAMAN STUDIES OF CARBON NANOTUBES [J].
HIURA, H ;
EBBESEN, TW ;
TANIGAKI, K ;
TAKAHASHI, H .
CHEMICAL PHYSICS LETTERS, 1993, 202 (06) :509-512
[5]  
HULTEN JC, 1998, NANOPARTICLES NANOST, pCH10
[6]   Raman spectral study of silicon nanowires [J].
Li, BB ;
Yu, DP ;
Zhang, SL .
PHYSICAL REVIEW B, 1999, 59 (03) :1645-1648
[7]   Simulation of the optical absorption spectra of gold nanorods as a function of their aspect ratio and the effect of the medium dielectric constant [J].
Link, S ;
Mohamed, MB ;
El-Sayed, MA .
JOURNAL OF PHYSICAL CHEMISTRY B, 1999, 103 (16) :3073-3077
[8]   NANOMATERIALS - A MEMBRANE-BASED SYNTHETIC APPROACH [J].
MARTIN, CR .
SCIENCE, 1994, 266 (5193) :1961-1966
[9]   NEW TECHNIQUE FOR THE DETERMINATION OF METAL-PARTICLE SIZE IN SUPPORTED METAL-CATALYSTS [J].
PRESTON, CK ;
MOSKOVITS, M .
JOURNAL OF PHYSICAL CHEMISTRY, 1988, 92 (10) :2957-2960
[10]   Evidence for charge transfer in doped carbon nanotube bundles from Raman scattering [J].
Rao, AM ;
Eklund, PC ;
Bandow, S ;
Thess, A ;
Smalley, RE .
NATURE, 1997, 388 (6639) :257-259