Evidence of Dynamic Pentagon-Heptagon Pairs in Single-Wall Carbon Nanotubes using Surface-Enhanced Raman Scattering

被引：34

作者：

Fujimori, Toshihiko ^{[1
]}

Urita, Koki ^{[2
]}

Ohba, Tomonori ^{[1
]}

Kanoh, Hirofumi ^{[1
]}

Kaneko, Katsumi ^{[1
]}

机构：

[1] Chiba Univ, Grad Sch Sci, Dept Chem, Inage Ku, Chiba 2638522, Japan

[2] Nagasaki Univ, Fac Engn, Dept Appl Chem, Nagasaki 8528521, Japan

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2010年 / 132卷 / 19期

关键词：

AMORPHOUS-CARBON; TOPOLOGICAL DEFECTS; VIBRATIONAL-MODES; LASER-ABLATION; SPECTROSCOPY; GRAPHITE; SILVER; SERS; NANOPARTICLES; SPECTRA;

D O I：

10.1021/ja100760m

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Surface-enhanced Raman scattering (SERS) was applied to detecting pentagon-heptagon pairs, the so-called Stone Wales defect, in single-wall carbon nanotubes (SWCNTs). When a probing laser light was scanned over a SWCNT-dispersed silver surface, two distinct SERS spectra were obtained: (1) temporally stable spectra similar to that of resonance Raman spectra of bulk SWCNTs and (2) temporally fluctuating spectra with additional peaks which were not observed in the non-SERS spectra. The fluctuations in the SERS spectra are discussed in association with dynamic reconstruction of defective structures of SWCNTs (nonhexagonal arrangements of carbon atoms) in the vicinity of SERS-active sites under irradiation of the laser light.

引用

页码：6764 / 6767

页数：4

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