Ag nanoparticles coated SWCNT with surface enhanced Raman scattering (SERS) signals.
We report here a simple method to fabricate the silver nanoparticles (AgNPs) coated DNA-SWCNTs that give SERS signals. Dynamic light scattering (DLS), atomic force microscopy (AFM), and high resolution transmission electron microscopy (HRTEM) suggested the products are dispersive and soluble in aqueous solution. The Raman scattering spectra show AgNPs coated SWCNTs have enhanced the Raman signal when compared with pure SWCNT. From the radial breathing mode (RBM) of the Raman spectra, we can disclose that this DNA-SWCNT has unique chirality, which implies that it could be a good nanoprobe for cell marking.
CAS Key Lab for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, and National Center for Nanoscience and Technology of China, P.B. Box 918, Beijing 100049, China.
Zhong
Z
Chen
Ru
R
Liu
Yaling
Y
Wang
Huarui
H
Zhu
Zhipeng
Z
Sun
Taisen
T
Zuo
Xueling
X
Chang
Feng
F
Zhao
Gengmei
G
Xing
Hui
H
Yuan
Junhui
J
Xiang
Xueyun
X
Gao
D008027:Light; D053768:Metal Nanoparticles / Q000737:chemistry*; D018625:Microscopy, Atomic Force; D046529:Microscopy, Electron, Transmission; D037742:Nanotubes, Carbon / Q000737:chemistry*; D012542:Scattering, Radiation; D012834:Silver / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet; D013059:Spectrum Analysis, Raman / Q000379:methods*
D037742:Nanotubes, Carbon; D012834:Silver