Surface enhanced Raman scattering effects of silver colloids with different shapes.
By solution-based method, three kinds of silver colloids, self-assembled nanowires, triangular nanoplates and quasispherical nanoparticles, have been synthesized. TEM studies revealed that they exposed different crystal planes, such as {111} crystal planes to triangular nanoplates, mainly {100} and {111} planes to self-assembly nanowires. Hereby, do the distinct shapes and crystal planes have an impact on the surface enhanced Raman scattering (SERS)? The great differences of the SERS spectra of rhodamine B at these Ag colloids confirmed that the shapes and crystal planes of silver have great effect on Raman enhancement, especially the crystal planes.
Zhang
Jiatao
J
Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China.
Li
Xiaolin
X
Sun
Xiaoming
X
Li
Yadong
Y
D003102:Colloids; D003460:Crystallization; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D012834:Silver / Q000737:chemistry*; D013059:Spectrum Analysis, Raman; D014961:X-Ray Diffraction
D003102:Colloids; D012834:Silver