Vibrational Activity Change of Self-Assembled Monolayers upon Chemical Attachment and Nanoscale Block Revealed by Surface Enhanced Raman Spectroscopy
writer：ZHOU Jie LI Bo-Lin ZHU Pei-Zhi LU Xiao-Lin*
keywords：Vibrational activity, SAM, SERS, high-order effect, symmetry
source：期刊
specific source：Acta Phys. -Chim. Sin. 2014, 30, 623-627
Issue time：2014年
This paper presents an experimental framework aiming at identifying the origin of weak ambiguous vibrational modes in surface enhanced Raman scattering (SERS), i.e. from the high-order effect or symmetry change using 1,4-benzenedithiol (BDT) as probing molecules. The experimental result indicated the appearance of the weak ambiguous vibrational modes was caused by symmetry change rather than high-order effect. Our experimental method can feasibly be extended to a broad range of targets, for example similar systems excited by lasers with different wavelengths or microelectronic junctions bridged by organic molecules.
http://chinesesites.library.ingentaconnect.com/content/apcs/apcs/2014/00000030/00000004/art00003